QoS advice
I have a Cisco AP1142N access point where I can enable QoS.
I have a few questions relating to QoS and how it actually works with devices:
How does the Cisco access point differentiate between traffic streams?
What happens if the source of the stream is not a Cisco device, e.g.: Netperf traffic generator?
What is the access point (whether it is Cisco or not) examining to determine what sort of traffic stream it is?
Is it the TOS field?
Should all applications in the network be QoS-aware?
Hi Reg,
Qos is a large topic but I'll try to shortly answer your questions.
1. There is a 802.11e (specific to wireless QoS) field with the traffic priority class on each wireless frame. So the AP easily know what traffic is voice/video/best effort
2. QoS is nothing Cisco specific. Devices should support WMM (it's a standard) to do wireless QoS. When they associate, clients mention to the AP if they are WMM capable or not.
The AP will only trust traffic that is WMM and that is tagged with QoS. Un-tagged traffic will be considered best-effort.
To answer the question directly, I doubt that iperf sends packets marked with QoS on the wireless. I've only see softphones applications doing that.
3.See answer 1
4. No. One thing to note is that your application can send a packet with a DSCP value or whatsoever, it will not have any effect on the wireless. The application needs to instruct the driver to send the frame with a QoS tag over the air.
5.No. Non-qos aware applications send untagged traffic that is considered "best effort" class and non-wmm capable stations are also in that category by default.
I'm adding few precisions :
6. The AP, upon receiving a frame with a 802.11e field of 6 will convert it to COS 5 on the wired so that the wired network has a way of recognizing the QoS. When COS-tagged frames arrive to the AP for a wireless client, the AP is adding the 802.11e field for the wireless transmission.
7. One thing is that the QoS tag is there for the AP to trust the traffic in high priority and keep the tag for wired processing afterwards. but the most important part is when you are sending the QoS frame. QoS frame enjoy shorter time to access the medium on wireless, so they have a better chance to be sent before any other station send its data. This means that the client has to send the frame in the QoS fashion (the AP does it as well when it sends to client). The point I'm reaching with this is that the application needs to specifically instruct the wireless adapter to use shorter timers and to add this 802.11e field.
Most applications just add a DSCP field on the packet and hope the network will take care of it. This is why only few applications really work with wireless QoS.
Similar Messages
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Asking for QoS Advice...
We're upgrading our network infrastructure. We're currently on a Catalyst 6509 core with 3560's as distribution and access. We're currently running CUCM 10.5. Our phones are primarily 7940's running SCCP.
We're moving to a Catalyst 6807 with 6800ia FEXes. We'll be replacing the majority of our deskset phones with the Jabber client and Jabra headsets.
Our current QoS is configured using the 'mls qos' commands and policy-maps in our switches. Someone told me in passing that QoS for Cisco Unified Communications is simplified through "medianet". So the advice I'm looking for...is "medianet" the way we want to go? Or is the 'mls qos' and policy-maps still the way to go? Or is there another preferred option?
Also would be interested in any documentation on best-practices for QoS with CUCM, Unity, WebEx, UCCX, etc.
Thanks,
-MikeHi
+5 for yosh , just keep in your mind the following medianet technology is used especially for Real time applications as video endpoints when you have a switch which connected to many applications as " voice , data , video ,wireless" different types of traffic . In this we d classification for the traffic , here below a good example for mdianet configuration
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Video/qoscampuscat3xxxaag.html
Cisco medianet is specially for video conference endpoints and can be used for IP phone , jabber , telepresence used for the below:-
Autoconfiguration: Facilitates the deployment of video endpoints and reduces the ongoing operational costs of managing moves, adds, and changes.After you connect to the switch by "camera , DMP , IP Pone , jabber" it will get automatically VLAN , QOS , location information and security .
Media Monitoring: Enhances visibility into the network. It helps accelerate troubleshooting, and assess and measure the impact of video, voice, and data applications in the network.
•Media Awareness: Helps the network to become application and rich-media context aware end to end. The network works together with the video endpoints and applications for optimal QoE for end-users and improved visibility for IT.
I used medianet configuration on my cisco switches for my cisco DMPs " digital media players" and this medianet allow me to get the above benfits. Just you have to check the version of your IOS if it is support medianet configuration or not. for configuration , please find the below
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Video/Medianet_Ref_Gd/medianet_ref_gd/chap7.html
http://www.cisco.com/web/learning/le31/le46/cln/learning_module/autoconfiguration/index.html
Thanks
please rate all useful information -
Need advice with routers (gaming, stability, QoS?)
Hi.I use Sky Broadband for gaming. Unfortunately, my housemate has about 4 devices on the go at once and being an ignoramus has no idea what they are doing half the time... His Xbox may be downloading a huge update for a game he doesn't play, his iPhone and laptop may be uploading a load of pointless information to the iCloud and he may be simultaneously downloading a HD stream on Sky of some programme he's barely watching cos he's looking at videos of cats on his phone. Meanwhile, I often get completely locked out and lose connection to servers. It's infuriating. -_- Rather than get frustrated about it, I figure it's time I got a decent router with QoS that prioritises the stability of my ping so that these inconveniences can be a thing of the past and he can get on with his aimless downloading without myself getting annoyed. Unless I am mistaken, the Sky routers are all incredibly average and have nothing that can help (correct?) so I'm guessing I need to buy and plug in a second router (with QoS presumably?) into the Sky Hub and setup QoS this way? Can anyone advise me on routers that may suit this purpose (preferably under £100) and how I would go about setting it up? Thanks in advance.Matt
An update from me. I bought the TP-Link AC1750 as recommended. Before installing it you need to download the latest firmware to your PC because it doesn't work without it. I used the disk to install it though I may have needed this information (I can't remember if it did it automatically or not but it's handy to have it in front of you just in case you need it): Username: [email protected]
Password: install
Connection Type: PPPoA
VPI: 0
VCI: 38 After installation go into your router (192.168.1.1 in browser, user/pw: admin) then system tools>firmware upgrade and install the firmware. The QoS works like a BEAST. Completely neutralizes annoying flatmates. You just have to give your PC a static IP then go into the 'Bandwidth Control' menu, allocate yourself priority 1 and guarantee yourself some medium-high download/upload speeds. I did, however, find the wifi still caused me issues - the 5Ghz was virtually useless through walls and the 2.4Ghz had too many neighbour's routers overlapping causing lag. My final step was to buy a set of POWERLINE ADAPTERS. TP-LINK TL-PA4020PKIT AV500 to be exact. Easy to install. Since the day these were installed I have not had 1 single lagspike. Not 1. If you're on Sky and a gamer, this is possibly the best setup to avoid lagspikes. It certainly is for me. The router cost about £95 and the adapters cost about £39. You might be able to find them cheaper if you look around though. (Sorry if this is patronising or not aimed at anyone specific, I'm just leaving it here for future googlers in a similar situation and looking for a fix to save them all the hours I spent googling to collect all this information). -
Cisco 7206 has with LLQ QOS and cpu 85 %
hi all ,
i want to mention issue about cisco router 7206 npeg2 :
can this router handle traffic 780 Mbps as download and 75 MBps as upload ?? with cpu 85 % and with LLQ qos ??
im asking this question because my QOS althoug it matched alot of traffic , it some time get slow and seems that QOS not working fine , im sure that my work is fine, because it was fine , but recent days i added more bw ???!!!!!
dont know if need more memory for router for QOS :
===============================================================
7200Gateway#sh memory
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 6B97A80 1883669308 114125456 1769543852 1768174580 1760364316
I/O 78000000 67108864 4482572 62626292 62598896 62617884
Transient 77000000 16777216 22196 16755020 16222412 16728368
Processor memory
Address Bytes Prev Next Ref PrevF NextF Alloc PC what
06B97A80 0000010004 00000000 06B9A1C4 001 -------- -------- 01A493D8 CEF: fib
06B9A1C4 0000000028 06B97A80 06B9A210 000 87F3D04 87FD620 015FC24C AAA Attr Binary/String
06B9A210 0000004700 06B9A1C4 06B9B49C 001 -------- -------- 01AC85B4 ADJ: adjacency
06B9B49C 0000004100 06B9A210 06B9C4D0 001 -------- -------- 0011245C HTTP CORE
06B9C4D0 0000004100 06B9B49C 06B9D504 001 -------- -------- 00112548 HTTP CORE
06B9D504 0000004100 06B9C4D0 06B9E538 001 -------- -------- 00112548 HTTP CORE
06B9E538 0000004100 06B9D504 06B9F56C 001 -------- -------- 00112548 HTTP CORE
06B9F56C 0000004100 06B9E538 06BA05A0 001 -------- -------- 00112548 HTTP CORE
06BA05A0 0000000756 06B9F56C 06BA08C4 001 -------- -------- 0343C38C Process
06BA08C4 0000000204 06BA05A0 06BA09C0 001 -------- -------- 0343FAB4 Process Events
06BA09C0 0000022764 06BA08C4 06BA62DC 001 -------- -------- 04055CB4 IPSM Octet Str
06BA62DC 0000014488 06BA09C0 06BA9BA4 001 -------- -------- 0405C0C4 ipsm IPSEC Fai
06BA9BA4 0000004100 06BA62DC 06BAABD8 001 -------- -------- 00112548 H
===========================================================================
==========================================
7200Gateway#sh version
Cisco IOS Software, 7200 Software (C7200P-ADVENTERPRISEK9-M), Version 12.4(24)T7, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Tue 28-Feb-12 12:53 by prod_rel_team
ROM: System Bootstrap, Version 12.4(12.2r)T, RELEASE SOFTWARE (fc1)
7200Gateway uptime is 2 weeks, 5 days, 19 hours, 43 minutes
System returned to ROM by power-on
System image file is "disk2:/c7200p-adventerprisek9-mz.124-24.T7.bin"
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
[email protected].
Cisco 7206VXR (NPE-G2) processor (revision A) with 1966080K/65536K bytes of memory.
Processor board ID 13252317
MPC7448 CPU at 1666Mhz, Implementation 0, Rev 2.2
6 slot VXR midplane, Version 2.0
Last reset from power-on
PCI bus mb1 (Slots 1, 3 and 5) has a capacity of 600 bandwidth points.
Current configuration on bus mb1 has a total of 0 bandwidth points.
This configuration is within the PCI bus capacity and is supported.
PCI bus mb2 (Slots 2, 4 and 6) has a capacity of 600 bandwidth points.
Current configuration on bus mb2 has a total of 0 bandwidth points.
This configuration is within the PCI bus capacity and is supported.
Please refer to the following document "Cisco 7200 Series Port Adaptor
Hardware Configuration Guidelines" on Cisco.com <http://www.cisco.com>
for c7200 bandwidth points oversubscription and usage guidelines.
1 FastEthernet interface
3 Gigabit Ethernet interfaces
2045K bytes of NVRAM.
250880K bytes of ATA PCMCIA card at slot 2 (Sector size 512 bytes).
65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102
==============================================================
7200Gateway#sh processes cpu
CPU utilization for five seconds: 85%/84%; one minute: 84%; five minutes: 84%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
1 32 416 76 0.00% 0.00% 0.00% 0 Chunk Manager
2 32788 342520 95 0.00% 0.05% 0.05% 0 Load Meter
3 0 1 0 0.00% 0.00% 0.00% 0 chkpt message ha
4 0 1 0 0.00% 0.00% 0.00% 0 EDDRI_MAIN
5 2624584 213262 12306 0.00% 0.03% 0.04% 0 Check heaps
6 56 373 150 0.00% 0.00% 0.00% 0 Pool Manager
7 0 2 0 0.00% 0.00% 0.00% 0 Timers
8 0 2 0 0.00% 0.00% 0.00% 0 ATM AutoVC Perio
9 0 2 0 0.00% 0.00% 0.00% 0 ATM VC Auto Crea
10 16 28543 0 0.00% 0.00% 0.00% 0 IPC Dynamic Cach
11 0 1 0 0.00% 0.00% 0.00% 0 IPC Zone Manager
12 688 1670887 0 0.00% 0.00% 0.00% 0 IPC Periodic Tim
13 520 1670887 0 0.00% 0.00% 0.00% 0 IPC Deferred Por
14 0 1 0 0.00% 0.00% 0.00% 0 IPC Seat Manager
15 0 1 0 0.00% 0.00% 0.00% 0 IPC BackPressure
16 9007072 30711869 293 1.35% 0.15% 0.11% 0 EnvMon
17 0 1 0 0.00% 0.00% 0.00% 0 OIR Handler
18 0 1 0 0.00% 0.00% 0.00% 0 Crash writer
19 1380 3892 354 0.00% 0.00% 0.00% 0 ARP Input
20 1584 1784473 0 0.00% 0.00% 0.00% 0 ARP Background
21 0 2 0 0.00% 0.00% 0.00% 0 ATM Idle Timer
22 0 1 0 0.00% 0.00% 0.00% 0 CEF MIB API
23 4 134 29 0.00% 0.00% 0.00% 0 AAA high-capacit
24 0 1 0 0.00% 0.00% 0.00% 0 AAA_SERVER_DEADT
25 0 1 0 0.00% 0.00% 0.00% 0 Policy Manager
26 0 2 0 0.00% 0.00% 0.00% 0 DDR Timers
27 0 5 0 0.00% 0.00% 0.00% 0 Entity MIB API
28 0 2 0 0.00% 0.00% 0.00% 0 Serial Backgroun
29 0 1 0 0.00% 0.00% 0.00% 0 RO Notify Timers
30 0 1 0 0.00% 0.00% 0.00% 0 RMI RM Notify Wa
31 28 281 99 0.00% 0.00% 0.00% 0 EEM ED Syslog
32 0 2 0 0.00% 0.00% 0.00% 0 SMART
33 724 1712571 0 0.00% 0.00% 0.00% 0 GraphIt
34 0 2 0 0.00% 0.00% 0.00% 0 Dialer event
35 0 1 0 0.00% 0.00% 0.00% 0 SERIAL A'detect
36 0 2 0 0.00% 0.00% 0.00% 0 XML Proxy Client
37 0 2 0 0.00% 0.00% 0.00% 0 VSA background
38 0 1 0 0.00% 0.00% 0.00% 0 VSA Cleanup Proc
39 0 1 0 0.00% 0.00% 0.00% 0 Critical Bkgnd
40 4348 444483 9 0.00% 0.00% 0.00% 0 Net Background
41 0 2 0 0.00% 0.00% 0.00% 0 IDB Work
42 32 501 63 0.00% 0.00% 0.00% 0 Logger
43 1236 1710802 0 0.00% 0.00% 0.00% 0 TTY Background
44 16504 1712627 9 0.07% 0.00% 0.00% 0 Per-Second Jobs
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
45 20 34 588 0.00% 0.00% 0.00% 0 IF-MGR control p
46 8 40 200 0.00% 0.00% 0.00% 0 IF-MGR event pro
47 0 1 0 0.00% 0.00% 0.00% 0 Inode Table Dest
48 0 1 0 0.00% 0.00% 0.00% 0 IKE HA Mgr
49 0 1 0 0.00% 0.00% 0.00% 0 IPSEC HA Mgr
50 4 4 1000 0.00% 0.00% 0.00% 0 rf task
51 12808 179149 71 0.00% 0.00% 0.00% 0 Net Input
52 1304 342532 3 0.00% 0.00% 0.00% 0 Compute load avg
53 610136 28974 21058 0.00% 0.00% 0.00% 0 Per-minute Jobs
54 0 1 0 0.00% 0.00% 0.00% 0 Token Daemon
55 4 10570 0 0.00% 0.00% 0.00% 0 Transport Port A
56 1272 505453 2 0.00% 0.00% 0.00% 0 HC Counter Timer
57 0 1 0 0.00% 0.00% 0.00% 0 Coproc Event Pro
58 0 1 0 0.00% 0.00% 0.00% 0 POS APS Event Pr
59 0 1 0 0.00% 0.00% 0.00% 0 SONET alarm time
60 0 1 0 0.00% 0.00% 0.00% 0 CSP Timer
61 204 4 51000 0.00% 0.00% 0.00% 0 USB Startup
62 0 2 0 0.00% 0.00% 0.00% 0 FPD Management P
63 0 1 0 0.00% 0.00% 0.00% 0 FPD Action Proce
64 0 2 0 0.00% 0.00% 0.00% 0 VNM DSPRM MAIN
65 0 1 0 0.00% 0.00% 0.00% 0 RF_INTERDEV_DELA
66 0 1 0 0.00% 0.00% 0.00% 0 RF_INTERDEV_SCTP
67 464 1712577 0 0.00% 0.00% 0.00% 0 ISA Common Helpe
68 0 2 0 0.00% 0.00% 0.00% 0 Flash MIB Update
69 0 58 0 0.00% 0.00% 0.00% 0 Flash Card Oir
70 0 1 0 0.00% 0.00% 0.00% 0 CES Line Conditi
71 0 1 0 0.00% 0.00% 0.00% 0 CF_INTERDEV_SCTP
72 0 1 0 0.00% 0.00% 0.00% 0 Async write proc
73 0 2 0 0.00% 0.00% 0.00% 0 Ethernet CFM
74 736 1670893 0 0.00% 0.00% 0.00% 0 Ethernet Timer C
75 0 1 0 0.00% 0.00% 0.00% 0 delayed evt hand
76 28 112 250 0.00% 0.00% 0.00% 0 AAA Server
77 0 1 0 0.00% 0.00% 0.00% 0 AAA ACCT Proc
78 0 1 0 0.00% 0.00% 0.00% 0 ACCT Periodic Pr
79 0 2 0 0.00% 0.00% 0.00% 0 AAA Dictionary R
80 744 1670882 0 0.00% 0.00% 0.00% 0 BGP Scheduler
81 0 2 0 0.00% 0.00% 0.00% 0 Ethernet OAM Pro
82 0 2 0 0.00% 0.00% 0.00% 0 Ethernet LMI
83 0 2 0 0.00% 0.00% 0.00% 0 CEF switching ba
84 3684 14726 250 0.00% 0.00% 0.00% 0 ADJ resolve proc
85 8 30 266 0.00% 0.00% 0.00% 0 IP ARP Adjacency
86 0 1 0 0.00% 0.00% 0.00% 0 IP ARP Retry Age
87 3481296 6804010 511 0.00% 0.02% 0.01% 0 IP Input
88 0 1 0 0.00% 0.00% 0.00% 0 ICMP event handl
89 0 9 0 0.00% 0.00% 0.00% 0 TurboACL
90 0 2 0 0.00% 0.00% 0.00% 0 TurboACL chunk
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
91 0 1 0 0.00% 0.00% 0.00% 0 IPv6 Echo event
92 16 2854 5 0.00% 0.00% 0.00% 0 MOP Protocols
93 0 1 0 0.00% 0.00% 0.00% 0 LSP Tunnel FRR
94 0 1 0 0.00% 0.00% 0.00% 0 MPLS Auto-Tunnel
95 0 3 0 0.00% 0.00% 0.00% 0 PPP Hooks
96 0 1 0 0.00% 0.00% 0.00% 0 Async write proc
97 0 1 0 0.00% 0.00% 0.00% 0 SSS Manager
98 0 1 0 0.00% 0.00% 0.00% 0 SSS Feature Mana
99 0 1 0 0.00% 0.00% 0.00% 0 SSS Feature Time
100 0 2 0 0.00% 0.00% 0.00% 0 Spanning Tree
101 0 1 0 0.00% 0.00% 0.00% 0 X.25 Encaps Mana
102 20 96 208 0.00% 0.00% 0.00% 0 SSM connection m
103 0 1 0 0.00% 0.00% 0.00% 0 AC Switch
104 4 5709 0 0.00% 0.00% 0.00% 0 Authentication P
105 0 1 0 0.00% 0.00% 0.00% 0 Auth-proxy AAA B
106 0 2 0 0.00% 0.00% 0.00% 0 EAPoUDP Process
107 0 2 0 0.00% 0.00% 0.00% 0 IP Host Track Pr
108 0 2 0 0.00% 0.00% 0.00% 0 KRB5 AAA
109 1152 49386 23 0.00% 0.00% 0.00% 0 IP Background
110 2276 28582 79 0.00% 0.00% 0.00% 0 IP RIB Update
111 60 34442 1 0.00% 0.00% 0.00% 0 CEF background p
112 6784 2485297 2 0.00% 0.00% 0.00% 0 CEF: IPv4 proces
113 12 104 115 0.00% 0.00% 0.00% 0 ADJ background
114 0 2 0 0.00% 0.00% 0.00% 0 PPP IP Route
115 0 2 0 0.00% 0.00% 0.00% 0 PPP IPCP
116 0 1 0 0.00% 0.00% 0.00% 0 IP Traceroute
117 7292 7550370 0 0.00% 0.00% 0.00% 0 TCP Timer
118 1300 10511 123 0.00% 0.00% 0.00% 0 TCP Protocols
119 0 1 0 0.00% 0.00% 0.00% 0 Socket Timers
120 18228 11429 1594 0.00% 0.00% 0.00% 0 HTTP CORE
121 0 2 0 0.00% 0.00% 0.00% 0 RLM groups Proce
122 0 1 0 0.00% 0.00% 0.00% 0 L2X Data Daemon
123 0 1 0 0.00% 0.00% 0.00% 0 ac_atm_state_eve
124 0 2 0 0.00% 0.00% 0.00% 0 SNMP Timers
125 1320 1710737 0 0.00% 0.00% 0.00% 0 RUDPV1 Main Proc
126 0 1 0 0.00% 0.00% 0.00% 0 bsm_timers
127 568 1710728 0 0.00% 0.00% 0.00% 0 bsm_xmt_proc
128 0 1 0 0.00% 0.00% 0.00% 0 COPS
129 0 2 0 0.00% 0.00% 0.00% 0 Dialer Forwarder
130 0 3 0 0.00% 0.00% 0.00% 0 Flow Exporter Ti
131 0 2 0 0.00% 0.00% 0.00% 0 ATM OAM Input
132 0 2 0 0.00% 0.00% 0.00% 0 ATM OAM TIMER
133 0 1 0 0.00% 0.00% 0.00% 0 RARP Input
134 0 1 0 0.00% 0.00% 0.00% 0 IPv6 Inspect Tim
135 0 1 0 0.00% 0.00% 0.00% 0 LAPB Process
136 0 2 0 0.00% 0.00% 0.00% 0 LFDp Input Proc
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
137 0 1 0 0.00% 0.00% 0.00% 0 PAD InCall
138 0 2 0 0.00% 0.00% 0.00% 0 X.25 Background
139 0 2 0 0.00% 0.00% 0.00% 0 PPP Bind
140 0 2 0 0.00% 0.00% 0.00% 0 PPP SSS
141 0 1 0 0.00% 0.00% 0.00% 0 MQC Flow Event B
142 35504 424737438 0 0.23% 0.25% 0.23% 0 HQF Shaper Backg
143 4068 17031478 0 0.00% 0.00% 0.00% 0 RBSCP Background
144 0 2 0 0.00% 0.00% 0.00% 0 SCTP Main Proces
145 0 1 0 0.00% 0.00% 0.00% 0 VPDN call manage
146 0 1 0 0.00% 0.00% 0.00% 0 CHKPT EXAMPLE
147 0 1 0 0.00% 0.00% 0.00% 0 CHKPT DevTest
148 0 1 0 0.00% 0.00% 0.00% 0 IPS Process
149 0 2 0 0.00% 0.00% 0.00% 0 IPS Auto Update
150 0 2 0 0.00% 0.00% 0.00% 0 SDEE Management
151 948 3338807 0 0.00% 0.00% 0.00% 0 Inspect process
152 0 1 0 0.00% 0.00% 0.00% 0 xcpa-driver
153 52 136947 0 0.00% 0.00% 0.00% 0 FW DP Inspect pr
154 1112 3338806 0 0.00% 0.00% 0.00% 0 CCE DP URLF cach
155 0 2 0 0.00% 0.00% 0.00% 0 URL filter proc
156 0 1 0 0.00% 0.00% 0.00% 0 XSM_EVENT_ENGINE
157 144 171238 0 0.00% 0.00% 0.00% 0 XSM_ENQUEUER
158 68 171238 0 0.00% 0.00% 0.00% 0 XSM Historian
159 0 1 0 0.00% 0.00% 0.00% 0 Select Timers
160 4 2 2000 0.00% 0.00% 0.00% 0 HTTP Process
161 0 2 0 0.00% 0.00% 0.00% 0 CIFS API Process
162 0 2 0 0.00% 0.00% 0.00% 0 CIFS Proxy Proce
163 0 1 0 0.00% 0.00% 0.00% 0 Crypto HW Proc
164 56 114166 0 0.00% 0.00% 0.00% 0 ACE policy loade
165 156 68505 2 0.00% 0.00% 0.00% 0 CRM_CALL_UPDATE_
166 36688 172862 212 0.00% 0.00% 0.00% 0 BGP I/O
167 0 2 0 0.00% 0.00% 0.00% 0 AAA Cached Serve
168 0 2 0 0.00% 0.00% 0.00% 0 ENABLE AAA
169 0 1 0 0.00% 0.00% 0.00% 0 EM Background Pr
170 0 1 0 0.00% 0.00% 0.00% 0 Key chain liveke
171 0 2 0 0.00% 0.00% 0.00% 0 LINE AAA
172 44 112 392 0.00% 0.00% 0.00% 0 LOCAL AAA
173 0 42 0 0.00% 0.00% 0.00% 0 MPLS Auto Mesh P
174 0 2 0 0.00% 0.00% 0.00% 0 TPLUS
175 0 2 0 0.00% 0.00% 0.00% 0 VSP_MGR
176 0 1 0 0.00% 0.00% 0.00% 0 FW_TEST_TRP
177 0 1 0 0.00% 0.00% 0.00% 0 EPM MAIN PROCESS
178 4 3 1333 0.00% 0.00% 0.00% 0 Crypto WUI
179 0 2 0 0.00% 0.00% 0.00% 0 Crypto Support
180 0 1 0 0.00% 0.00% 0.00% 0 IPSECv6 PS Proc
181 0 1 0 0.00% 0.00% 0.00% 0 CCVPM_HTSP
182 0 1 0 0.00% 0.00% 0.00% 0 CCVPM_R2
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
183 0 1 0 0.00% 0.00% 0.00% 0 EPHONE MWI Refre
184 0 1903 0 0.00% 0.00% 0.00% 0 FB/KS Log HouseK
185 0 2 0 0.00% 0.00% 0.00% 0 EPHONE MWI BG Pr
186 0 1 0 0.00% 0.00% 0.00% 0 Skinny HW confer
187 0 1 0 0.00% 0.00% 0.00% 0 CCSWVOICE
188 206492 114180 1808 0.00% 0.00% 0.00% 0 BGP Scanner
189 0 1 0 0.00% 0.00% 0.00% 0 http client proc
190 0 3 0 0.00% 0.00% 0.00% 0 BGP Event
191 0 1 0 0.00% 0.00% 0.00% 0 QOS_MODULE_MAIN
192 0 1 0 0.00% 0.00% 0.00% 0 RPMS_PROC_MAIN
193 0 1 0 0.00% 0.00% 0.00% 0 VoIP AAA
194 0 2 0 0.00% 0.00% 0.00% 0 Dialog Manager
195 184 104 1769 0.00% 0.00% 0.00% 0 crypto engine pr
196 0 4 0 0.00% 0.00% 0.00% 0 Crypto CA
197 0 1 0 0.00% 0.00% 0.00% 0 Crypto PKI-CRL
198 28008 64288 435 0.00% 0.00% 0.00% 0 encrypt proc
199 384768 28300 13596 0.00% 0.00% 0.00% 0 crypto sw pk pro
200 8 27 296 0.00% 0.00% 0.00% 0 Crypto INT
201 456 2019 225 0.00% 0.00% 0.00% 0 Crypto IKE Dispa
202 2128 2714 784 0.00% 0.00% 0.00% 0 Crypto IKMP
203 0 1 0 0.00% 0.00% 0.00% 0 IPSEC manual key
204 180 85737 2 0.00% 0.00% 0.00% 0 IPSEC key engine
205 0 1 0 0.00% 0.00% 0.00% 0 CRYPTO QoS proce
206 28 142 197 0.00% 0.00% 0.00% 0 Crypto ACL
207 0 1 0 0.00% 0.00% 0.00% 0 Crypto PAS Proc
208 0 1 0 0.00% 0.00% 0.00% 0 GDOI GM Process
209 0 1 0 0.00% 0.00% 0.00% 0 UNICAST REKEY
210 0 1 0 0.00% 0.00% 0.00% 0 UNICAST REKEY AC
211 0 1 0 0.00% 0.00% 0.00% 0 MV64 TDR Process
212 0 1 0 0.00% 0.00% 0.00% 0 IMA Traps
213 0 1 0 0.00% 0.00% 0.00% 0 SYSMGT Events
214 0 2 0 0.00% 0.00% 0.00% 0 Control-plane ho
215 0 1 0 0.00% 0.00% 0.00% 0 DATA Transfer Pr
216 0 1 0 0.00% 0.00% 0.00% 0 DATA Collector
217 0 1 0 0.00% 0.00% 0.00% 0 Async write proc
218 116 292 397 0.00% 0.00% 0.00% 0 AAA SEND STOP EV
219 136 171243 0 0.00% 0.00% 0.00% 0 RMON Recycle Pro
220 0 2 0 0.00% 0.00% 0.00% 0 RMON Deferred Se
221 0 1 0 0.00% 0.00% 0.00% 0 Syslog Traps
222 0 2 0 0.00% 0.00% 0.00% 0 EEM ED Resource
223 0 2 0 0.00% 0.00% 0.00% 0 EEM ED Routing
224 0 3 0 0.00% 0.00% 0.00% 0 EEM ED Track
225 80 53575 1 0.00% 0.00% 0.00% 0 Crypto cTCP proc
226 0 1 0 0.00% 0.00% 0.00% 0 IP SLAs Ethernet
227 4 1 4000 0.00% 0.00% 0.00% 0 RMON Packets
228 820 1709984 0 0.00% 0.00% 0.00% 0 trunk conditioni
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
229 0 1 0 0.00% 0.00% 0.00% 0 trunk conditioni
230 12 120 100 0.00% 0.00% 0.00% 0 EEM Server
231 4 2 2000 0.00% 0.00% 0.00% 0 Call Home proces
232 52 260 200 0.00% 0.00% 0.00% 0 Syslog
233 0 1 0 0.00% 0.00% 0.00% 0 VPDN Test
234 0 2 0 0.00% 0.00% 0.00% 0 EEM Policy Direc
235 0 2 0 0.00% 0.00% 0.00% 0 EEM ED CLI
236 0 3 0 0.00% 0.00% 0.00% 0 EEM ED Counter
237 0 3 0 0.00% 0.00% 0.00% 0 EM ED GOLD
238 0 3 0 0.00% 0.00% 0.00% 0 EEM ED Interface
239 0 3 0 0.00% 0.00% 0.00% 0 EEM ED IOSWD
240 0 3 0 0.00% 0.00% 0.00% 0 EEM ED Ipsla
241 0 3 0 0.00% 0.00% 0.00% 0 EEM ED None
242 0 2 0 0.00% 0.00% 0.00% 0 EEM ED Nf
243 0 3 0 0.00% 0.00% 0.00% 0 EEM ED OIR
244 0 3 0 0.00% 0.00% 0.00% 0 EEM ED RF
245 0 3 0 0.00% 0.00% 0.00% 0 EEM ED SNMP
246 0 2 0 0.00% 0.00% 0.00% 0 EEM ED SNMP Noti
247 36 42890 0 0.00% 0.00% 0.00% 0 EEM ED Timer
248 0 3 0 0.00% 0.00% 0.00% 0 EEM ED Test
249 0 3 0 0.00% 0.00% 0.00% 0 EEM ED Config
250 0 3 0 0.00% 0.00% 0.00% 0 EEM ED Env
251 0 3 0 0.00% 0.00% 0.00% 0 EEM ED RPC
252 0 2 0 0.00% 0.00% 0.00% 0 cpf_process_msg_
253 0 1 0 0.00% 0.00% 0.00% 0 Key Proc
254 36 28543 1 0.00% 0.00% 0.00% 0 Call Home Timer
255 0 1 0 0.00% 0.00% 0.00% 0 tHUB
256 0 1 0 0.00% 0.00% 0.00% 0 Async write proc
257 104 953 109 0.00% 0.00% 0.00% 0 SSH Event handle
258 16 28543 0 0.00% 0.00% 0.00% 0 Secure Login
259 84 54 1555 0.00% 0.00% 0.00% 0 Tunnel Security
260 56 67 835 0.00% 0.00% 0.00% 0 Crypto SS Proces
261 0 1 0 0.00% 0.00% 0.00% 0 cpf_process_tpQ
262 0 1 0 0.00% 0.00% 0.00% 0 TCP Listener
263 0 2 0 0.00% 0.00% 0.00% 0 IP Flow Top Talk
264 1180 3338804 0 0.00% 0.00% 0.00% 0 IP NAT Ager
265 0 1 0 0.00% 0.00% 0.00% 0 IP NAT WLAN
266 24 28563 0 0.00% 0.00% 0.00% 0 IP SLAs Event Pr
267 434504 1489526 291 0.00% 0.00% 0.00% 0 IP SNMP
268 170304 877961 193 0.00% 0.00% 0.00% 0 PDU DISPATCHER
269 495704 877992 564 0.00% 0.00% 0.00% 0 SNMP ENGINE
270 0 2 0 0.00% 0.00% 0.00% 0 IP SNMPV6
271 0 1 0 0.00% 0.00% 0.00% 0 SNMP ConfCopyPro
272 0 1 0 0.00% 0.00% 0.00% 0 SNMP Traps
273 1185420 1715196 691 0.00% 0.00% 0.00% 0 NTP
274 412 29 14206 0.00% 0.00% 0.00% 0 VTEMPLATE Backgr
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
275 18608 174262 106 0.00% 0.00% 0.00% 0 BGP Router
276 36 27171 1 0.00% 0.00% 0.00% 0 DFS flush period
277 8 12 666 0.00% 0.00% 0.00% 0 Collection proce
278 16 651 24 0.00% 0.00% 0.00% 0 CRYPTO IKMP IPC
279 1724 850 2028 0.00% 0.00% 0.00% 2 SSH Process
281 0 1 0 0.00% 0.00% 0.00% 0 Skinny MOH Event
282 64 173856 0 0.00% 0.00% 0.00% 0 Skinny Socket Se
283 0 1451 0 0.00% 0.00% 0.00% 0 Web Write Housek
==============================================================
wish to help ASAPJosephDoherty wrote:DisclaimerThe Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.Liability DisclaimerIn no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.PostingThe fact you are matching with any ACLs, will decrease maximum performance.The fact you are using a policy-may, will decrease maximum performance.The fact is a -G2 only has finite capacity.In other words, what you're seeing might be completely normal for your traffic volume, your traffic composition and your configuration.If you believe your router is overloaded, and generally above 75% CPU might be so considered, either you'll need a faster device (see ASR 1Ks), or you might try changing your configuration to decrease your configuration load on the router.What's your CPU load if your remove the policy-map from the interface?If removing the policy-map from the interface shows a significant CPU loading decrease - QED.If you need/desire such QoS, then you'll want a "faster" router.You might be also able to decrease your CPU a little by some "tuning". I already mention the TurboACL feature statement. With ACLs, fewer are faster, and how they ordered (especially without TurboACL) impacts CPU. How you order you class-maps, within a policy, and how the match statements are ordered will also have some impact on the CPU load. If buffers are being allocated/deallocated, that too will impact CPU loading. I assume CEF is enabled, but for some traffic, flow caching might decrease CPU load.Remember a software based router, like the 7200s, are, more or less, a computer that takes your configuration and determines what's to be done with every packet it "sees". The more your configuration requires for per packet analysis, the more load for each packet.There are whitepapers addressing high CPU load caused by "process switching", but what you posted appears to be mostly all interrupt processing, which is "fast path", or optimal, packet forwarding. There's not much you can normally do to improve against that, other than insuring your configuration is as optimal as possible for your needs (again, things like sequencing/ordering of statements).
hi ,
thanks very very much for this nice information,
let me answer you :
you said that NPE G2 has finite capacity , but how to know this full capacity ???
i mean that my policy map is matching the traffic , but the matched traffic is not being enhancemend ??!!!
last about two weeks , the matched traffic of youtube was excellent and no interrupt durting the my rush hour.
i didnt change any thing, but my bw increased from 730 Mbps to 760Mbps ,
im un able to make sure that i need to chnage my platform to faster one.
agian
my cpu is 60 % without QOS
after QOS it increase to 80-85 %
agian ,
about NBAR
i want to tell you that i cant depend on NBAR , as an example , im matching the ips of videos of facebook , i cant depend on NBAR because it is https videos.
but in summary ,
my qos is matching well , but i have no real enhancement for my traffic.
did you face my issue before ???
i mean have you see like my problem ?
like my router platform with cpu over 80 % and 750Mbps , and matched qos without good result ??
note that i upgraded to iso 15 , but seems same issue !!!
regards -
How to set up a QOS on 3750 switch to limit outbound bandwidth on a server ?
Hi,
I have three LAN ports on a VM server. I want to limit a VM guest (guest server) outbound bandwidth to 3750 swith .
How do I do it ? I want to apply QoS on the switch.
thanksDisclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
If you're looking to limit bandwidth FROM your server, you can use an ingress policy on the server's interface and police selectively. For example, if your specific VM has its own IP address, you could police inbound (from the server) traffic matching that IP. -
Need help in Applying QOS to an ISP on ASR 1002
Hi
i want to ask
if someone gave me CIR with 900Mbps internet upload & download
the question is being asked is.
when the congestion occurs ( when my bw is full)
where does the congestion occur ??
on my router ?
or ISP router ?
or the internet ?
or other place ???
that issue is deiving me mad , because im doing qos on my side to guarantee bw and shape but it dont give me a result ?!
i mean , the qos is maching ok and soo nice
but ..... the performance.
agian
the performance as there is no guarantee and no bw guaranteed.
i asked an expert and told me you have to ask your provider to do that thier side ?!!! im really shocked to hear that ... he told me that congestion occurs outside my router.
so , im here to ask agian and agian.
what choices i have to fix my issue ??
wish to help
regardsDisclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
At "big speeds", there's a difference between shaping and policing. However, generally within an ISP, policing is used to restrict bandwidth usage, of a customer, to some agreed upon CIR (when CIR is less than physical capacity). With policing you don't need to manage any generated congestion (as over rate packets are just discarded). Policing is also "lightweight" in its resource demands and is often directly supported by the hardware.
I do agree ISPs, that provide SLAs, avoid over subscription because otherwise SLAs might not be meet. However, if SLAs are not provided, over subscription isn't uncommon. If too much of the latter is done, customers may indeed change ISPs, but do they have a choice? Or, how do the different ISP fees compare? (ISPs do analyze customer impact, i.e. customer retention, with cost of providing the service. They try to determine what's most profitable, not what the customer would like most. [Do you have gig to your home yet? If not, why not? Is it because it cannot be technically done, or is cost and/or what other ISPs offer in the area a factor? (If you're lucky, maybe you have Google fiber, but even that might be a "loss leader".)])
BTW, at "big speeds", another reason shaping is avoided, and also why over subscription is avoided, is because of the needed queuing. For example, say you wanted to queue up to 100 ms of traffic. Well on a 100 Gbps link, that's 10 Gb of data. -
Hello,
I'm currently configuring new 3750X switches.
I must implement QoS on the stack. The QoS must be the following:
VOIP Class (50%)
App-V Class (40%)
Movie Class (10%)
How I can do this (in particular for AppV)? I do the following for the moment:
class-map match-any VOIP
match protocol voice
match dscp ef
match protocol sip
match protocol skype
match protocol rtp audio
match protocol rtp video
exit
class-map AppV
exit
class-map Movie
match protocol rtp video
exit
policy-map BandwidthTraffic
class VOIP
priority percent 50
set dscp ef
class AppV
bandwidth remaining percent 40
class Movie
bandwidth remaining percent 10
interface Gig1/0/3
ip nbar protocol-discovery
service-policy input BandwidthTraffic
Anyone can says me if it's correct or not? And why?
Thank you for your help.
FlorentDisclaimer
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Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
It appears you've some router QoS. 3750X QoS is quite different for egress as you're limited to working with four egress queues. I don't recall 3750X supporting NBAR.
Suggest you read the configuration guide's chapter on QoS, for you 3750X IOS version, and then post questions as necessary. (My concern is, 3750X QoS is so different, it wouldn't be helpful to suggest a QoS configuration until you had a basic understanding of the 3750 QoS architecture and features.) -
Hello.
I have problem with bandwidth management on my RVS4000.
That is the way how i done it:
All traffic (TCP & UDP on all ports)
IP range 192.168.0.2 - 192.168.0.2 (My IP adress)
Guaranted download speed 1kbps
Maximum download speed 5000kbps
after saving setting and rebooting router
I have maximum download speed on my PC 12000kbps
Please help me to solve this problem.
Why QOS doesnt work ?
By the way sorry for my english i do not ue this language very often
Looking forward for some advices.Jaroslaw,
Please call into Cisco Small Business Support Center and speak with next available engineer (Support Numbers)
Jasbryan -
I am configuring QOS for some 2960-X's for a new deployment that also has some 2960's. The current 2960's already have auto qos configured. When I configured auto qos voip trust for the 2960-X, I noticed there were not any ingress queues and the all of the numbers for the queues were different. Should this be a concern at all if the switches are trunked together or even if they aren't? I am not that proficient with QOS yet. See below for configs.
Thanks for your help!
From 2960
mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue input bandwidth 90 10
mls qos srr-queue input threshold 1 8 16
mls qos srr-queue input threshold 2 34 66
mls qos srr-queue input buffers 67 33
mls qos srr-queue input cos-map queue 1 threshold 2 1
mls qos srr-queue input cos-map queue 1 threshold 3 0
mls qos srr-queue input cos-map queue 2 threshold 1 2
mls qos srr-queue input cos-map queue 2 threshold 2 4 6 7
mls qos srr-queue input cos-map queue 2 threshold 3 3 5
mls qos srr-queue input dscp-map queue 1 threshold 2 9 10 11 12 13 14 15
mls qos srr-queue input dscp-map queue 1 threshold 3 0 1 2 3 4 5 6 7
mls qos srr-queue input dscp-map queue 1 threshold 3 32
mls qos srr-queue input dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23
mls qos srr-queue input dscp-map queue 2 threshold 2 33 34 35 36 37 38 39 48
mls qos srr-queue input dscp-map queue 2 threshold 2 49 50 51 52 53 54 55 56
mls qos srr-queue input dscp-map queue 2 threshold 2 57 58 59 60 61 62 63
mls qos srr-queue input dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31
mls qos srr-queue input dscp-map queue 2 threshold 3 40 41 42 43 44 45 46 47
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 2 4
mls qos srr-queue output cos-map queue 4 threshold 2 1
mls qos srr-queue output cos-map queue 4 threshold 3 0
mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47
mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31
mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55
mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63
mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39
mls qos srr-queue output dscp-map queue 4 threshold 1 8
mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15
mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7
mls qos queue-set output 1 threshold 1 138 138 92 138
mls qos queue-set output 1 threshold 2 138 138 92 400
mls qos queue-set output 1 threshold 3 36 77 100 318
mls qos queue-set output 1 threshold 4 20 50 67 400
mls qos queue-set output 2 threshold 1 149 149 100 149
mls qos queue-set output 2 threshold 2 118 118 100 235
mls qos queue-set output 2 threshold 3 41 68 100 272
mls qos queue-set output 2 threshold 4 42 72 100 242
mls qos queue-set output 1 buffers 10 10 26 54
mls qos queue-set output 2 buffers 16 6 17 61
mls qos
interface FastEthernet0/2
switchport access vlan 100
switchport mode access
switchport voice vlan 110
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
From 2960-X
mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue output cos-map queue 1 threshold 3 4 5
mls qos srr-queue output cos-map queue 2 threshold 1 2
mls qos srr-queue output cos-map queue 2 threshold 2 3
mls qos srr-queue output cos-map queue 2 threshold 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 0
mls qos srr-queue output cos-map queue 4 threshold 3 1
mls qos srr-queue output dscp-map queue 1 threshold 3 32 33 40 41 42 43 44 45
mls qos srr-queue output dscp-map queue 1 threshold 3 46 47
mls qos srr-queue output dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23
mls qos srr-queue output dscp-map queue 2 threshold 1 26 27 28 29 30 31 34 35
mls qos srr-queue output dscp-map queue 2 threshold 1 36 37 38 39
mls qos srr-queue output dscp-map queue 2 threshold 2 24
mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55
mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63
mls qos srr-queue output dscp-map queue 3 threshold 3 0 1 2 3 4 5 6 7
mls qos srr-queue output dscp-map queue 4 threshold 1 8 9 11 13 15
mls qos srr-queue output dscp-map queue 4 threshold 2 10 12 14
mls qos queue-set output 1 threshold 1 100 100 50 200
mls qos queue-set output 1 threshold 2 125 125 100 400
mls qos queue-set output 1 threshold 3 100 100 100 400
mls qos queue-set output 1 threshold 4 60 150 50 200
mls qos queue-set output 1 buffers 15 25 40 20
mls qos
interface GigabitEthernet1/0/1
switchport access vlan 100
switchport mode access
switchport voice vlan 110
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust cos
auto qos trust
spanning-tree portfastDisclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
IMO, AutoQoS is always a concern (as are device defaults, without it).
If you're doing to "do" QoS, you should have a policy that serves your service needs, and configurations to support it. AutoQoS might, or might not, be exactly what you need.
If you're not proficient with QoS, on most LANs, you might actually be better off disabling it. -
Video streaming - is Qos the answer?
We're having problem with a video stream we are distrubuting to a few users. Lately we got a lot of complaits regarding glitches/freezing in the video.
Hardware in 7600's: WS-X6704-10GE
Topology:
Incomming stream<<--port channel 2G Fiber-->>7600(SUP720)<<--10G fiber-->>7600(RSP720 SVI for video)<<--10G fiber-->> Switch<<-1G RJ45->>PC
- I've checked the interfaces on the 7600's but cant see any errors on the interfaces or output drops on the interfaces(no congestion?)
- We're seeing TX drops from the edge switch to the pc's. Investegating the cause with vendor. But my guess can be buffer problem going from 10G to 1G?
- We have not implemented any Qos on the 7600's however we have enabled qos to prioritize the video vlan on the edge switch.
- Peak traffic between 7600 and edge switch is about 1G(5min average)
- Would enabling QoS on the 7600 and do End to End Qos solve the problem? As far I understand qos will only help if the interface is congested which isn't the case here?
- What would be the best strategy for video streaming? Would the solution be to use the CBWFQ + LLQ for this kind of traffic or would LLQ starve the rest of the queue's?
Best RegardsDisclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
"We're seeing TX drops from the edge switch to the pc's. Investegating the cause with vendor. But my guess can be buffer problem going from 10G to 1G?"
Probably, and those drops could be the cause of your "...glitches/freezing in the video."
So, what you might want to first address is using QoS on egress edge ports to insure video traffic isn't dropped.
"...we have enabled qos to prioritize the video vlan on the edge switch."
Prioritized in what sense? Dequeuing priority often makes little difference for typical buffers depths at gig or better bandwidths. Priority avoiding drops, though, might be worthwhile. -
QOs detoriation with increase in bandwidth utilisation
we are the MPLS service provider providing MPLS services in India.we notice that Voice quality detoriates as soon as the bandwdith utilisation of the customer links increase more than 60% of link bandwdith particularly with FTP. we have implemented QOS properly. i am told that qos is ineffective if bandwdith utilisation increases more than 60% of link bandwdith. customer should be adviced to increase the bandwdith. Is it true? please help
Hi
AFAIK if u configure strict priority to your voice traffic (i.e.,LLQ for your voice)it shuldnt affect your voice traffic at all regardless to your bandwidth utilsation since it reserves a particular amount of B/W for your voip traffic which again can be configured manually.
The same you can do under your policy map configurations,hope you are having LLQ in place for your voice otherwise would suggest to look onto that and try out the same.
And when theres no congestion thts your h/w queue is ample enough to serve your traffic the software queues will be bypassed (which are manually configured) and if theres some congestion then your S/W queues kicksin.
so in a ideal customer network with voip and other traffic i would go with llq for voip and cbwfq for other traffic based on the traffic patterns using the DSCP,IP Prec values..
to be more precise you can go for LFI also to slice your packets so that your voip packets dont get backlogged..
regds -
I have a trouble to implement dynamic QoS between two sites (Site A, and site B) across low speed WAN link (512k). On each site I have Cisco 1921 router. Most important app is Oracle. Because of slow speed WAN links, I want to avoid exact bandwith reservation for Oracle. I only reserve 5% bandwith for network control(icmp, ssh, telnet...) and want configure next Qos scenario:
1. If Oracle traffic exist on a network, it must have 70% of link speed guaranteed, all other apps (e.g mail, file share, ftp) use rest of the bandwith.
2. If there isn't Oracle traffic on a network, all other apps can use all available bandwith.
Issue descrtption:
I used all Cisco guides, but when I implemented this on production it simply didn't work. There is no any significant improvement after implementing this (when I start network file sharing accross wan link, Oracle becomes etremly slow.). Do anyone hadsimilar problem?
Here is configuration wich I trying to implement:
ACL-s and class-maps used to mark traffic:
access-list 119 remark ###QoS-MGMT###
access-list 119 permit tcp any any eq 22
access-list 119 permit tcp any any eq telnet
access-list 119 permit icmp any any
access-list 120 remark ###QoS-DB_ORA###
access-list 120 permit ip any host 10.100.40.30
access-list 120 permit tcp any any eq 1521
class-map match-any Oracle
match access-group 120
class-map match-any Mgmt_Traffic
match access-group 119
policy-map LAN
class Mgmt_Traffic
set dscp 7
class Oracle
set dscp 5
class class-default
set dscp default
policy-map WAN
class Oracle
priority percent 70
class Mgmt_Traffic
priority percent 5
Implementation of this policy maps (both sites are identical):
interface FastEthernet0/0
description WAN
bandwidth 512
service-policy output WAN
interface FastEthernet0/1
description LAN
bandwidth 512
service-policy input LAN
Thanx for help!Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Any other idea?
Yes, several.
First, we might confirm whether CBWFQ is working as configured. To be precise, when TAC "showed me" shaped/child CBWFQ worked correctly under 15.x, it was a specific 15.x something (I'll have to find what they actually used) and I took their word for it, i.e. I didn't actually confirm it operated correctly as our internal IOS usage standards don't (yet) allow 15.x code.
Easiest way to confirm correct operation, use a traffic generator to push 1 Mbps to the two classes and see if overall rate is limited to 512 Mbps and bandwidth proportions are 70/30.
I note you wrote you did try the 2nd LLQ policy, correct? Well, it too should be tested to insure your rate is limited to 512 and 70/30 bandwidth split. (You can also try a variation of the last w/o any FQ.)
If above tests confirm correct operation, then there are numerous reasons why you're not obtaining the performance you expect. For example, your WAN vendor could have a misconfiguration or even a technical issue they're unaware of (my experience the former is rare, say less than 1% of the time, the latter is very, very rare but I've seen such too [e.g. 3 months of complaining to a tier one vendor, Ethernet performance not quite right, they finally found cause - buggy firmware on one of their line cards]); or the nature of your traffic you're testing with causes "unexpected behavior" (e.g. UDP vs. TCP?); or L2 rates vs. L3 rates (touched on that in my prior post); application sensitivity (e.g. don't know about Oracle, but some earlier version of SAP were extremely "fragile"); or etc.
So, first confirm CBWFQ is working as it should. If not, you'll need to work with TAC. If it's working correctly, we can start to eliminate other possible issues. -
WRR QoS unused traffic classes
We are planning QoS for the enterprise LAN and MPLS core. At present, there are 5 traffic classes identified and no VoIP traffic. We could allocate resources and bandwidth for 5 queues and deploy such configs. But I guess it's worth defining all 8 classes and allocate queue limits and bandwidth to them. Later it will be easier to mark the new traffic and classify it into the unused queues without modifying the wrr config.
67xx 1p7q8t line card
Q3 and Q8(PQ) will not be used. 5+15% is allocated to them.
priority-queue queue-limit 15
wrr-queue queue-limit 30 15 5 10 15 5 5
wrr-queue bandwidth percent 30 15 5 10 15 5 5
I'm not sure if the allocated bandwidth and queue limit for the unused queues will affect the existing traffic and limit the aggregated traffic quantity. Will the 5 classes be able to fill the bandwidth until there is no congestion? What happens in case of congestion? Can the traffic excess 80% or not? (For simplicity, 100% is regarded as a fraction of link capacity defined by max-reserved-bandwidth)Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Generally, unless you're shaping or policing, bandwidth sharing commands provide a minimum bandwidth guarantee, and unused bandwidth can be used by other queues. Also when working with more than one queue, relative ratios are usually preserved. So, for instance, if q1 was configured for 25%, q2 for 25% and q3 for 50%, if q2 had no traffic, and q1 and q3 wanted all they could have, they would split the bandwidth 1:2 or 1/3 to 2/3. -
Best QOS Practice for a congested Uplink Port?
I have an MPLS uplink port to a carrier that carries both voice and data.
For example, Customer 3750 Switch 100MB Uplink--->100MB Uplink Carrier Router---Carrier Router 6MB MLPP Voice/Data MPLS Uplink with QOS configured for Voice subnet on carrier side too.
The port occasionally suffers from overutilizition and spikes to the full 6MB
I have a centralized CUCM that has phones that occasionally reset due to TCP 2000 timeouts (usually during the period of high utilization)
So that I can avoid most phone resets during high utilization I have prioritized all voice traffic (signalling and RTP streams) to EF
My question: What is best practice configuration for a congested uplink port? I'm going to assume the answer is it depends (the all great technical answer )
Here are my thoughts on how to configure the 3750 uplink port so far:
apply mls qos trust dscp
apply priority-queue out
(Here's where I'm looking for help)
apply some sort of policing or bandwidth statement on the interface to protect the voice traffic: What are the recommendations and what would those configurations look like?
I would apply these these configurations to the uplink ports at the edge site as well as the central site.
Any thoughts as to the best way to accomplish this?Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
You want to prioritize VoIP traffic at congestion points, which for you, looks to be whenever your LAN bandwidth hits your 6 Mbps WAN.
If the carrier takes your 100 Mbps, and doesn't just generally police all traffic to 6 Mbps, but instead has different priority queues for the 6 Mbps, all you should need to do, is insure you traffic is correctly processed by your WAN vendor. This, though, might require marking your traffic for the WAN provider.
If you carrier first polices all your traffic at 6 Mbps (many do), then you need to shape the traffic (with you own prioritization) before the provider "sees" it. If you need to "shape" on the 3750, there's a command to limit a port's bandwidth utilization, as a percentage. However it's not exact, so you may need to "shape" slower than 6 Mbps to insure 6 Mbps won't be exceeded. (BTW, for 6 Mbps, if you need to do QoS, you would be better off with an ISR.)
You also mention 6 MLPPP, but it's unlclear what your device is for that.
How to configure 3750 QoS is involved. Basically when you enable QoS, each port has four dedicated egress queues. By default, different traffic markings go into one of the four queues, each queue has same share of the bandwidth, and almost same share of the buffers. The PQ command you noted, enables the first queue to always transmit its packets first. Normally, you'll want to do that for VoIP bearer packets, which you've (insured are) directed to that queue. You also want to insure that VoIP signally packets are not likley to be dropped and, more or less, are forwarded quickly.
Cisco has multiple papers on QoS configurations, including papers for 3750s, so instead of my trying to present that, the above is intended as an overview. Feel free to post additional questions, the more specific, the more likely you'll get an answer. -
Best Practices for vMotion QoS in N1kv and UCS?
Hi,
I'm looking at a few technical documentation on what's the recommended way to provide QoS to vMotion.
From VMWare's website on vSphere deployment with N1kv,
They are using
policy-map type qos vmotion
class class-default
police cir percent 30 bc 200 ms conform transmit violate drop
This rate-limits vMotion traffic to 3Gbps and excess traffic will be dropped.
Would this be better if I were to use:
policy-map type qos vmotion
class class-default
police cir percent 30 bc 200 ms conform set-cos-transmit 4 exceed drop
policy-map type vethernet vMotion
switchport access vlan 900
service-policy type qos in vmotion
pinning id 0
I'm marking vmotion traffic with a CoS of 4 and pin it to Fabric-A. I will have my management VLAN pinned to Fabric-B.
Also, do I need to configure QoS settings in UCS as well?
For the upstream switch, if I'm using a Catalyst 3750, would it be sufficient just to do a mls qos trust cos?
Appreciate your advice.
Thanks..Steven,
Yes. You can use the modified QoS policy which changes the COS Values.
We need to do some more configuration in Fabric Interconnect for the COS Values that are modified by Nexus 1000v to keep it as it is.
The M81KR adapter works in a “no trust” QoS model which means that it will overwrite the CoS value set by an upstream entity (Nexus 1000v for example). For Nexus1000v deployments, it is highly recommended to do the CoS marking at the Nexus 1000v level. This means changing the QoS model to “trust” on the M81KR.
To create a QoS policy to achieve this, look into the attached file. We need to have option "Full" enabled in it.
Here are further details about this configuration from UCS Manager help:
Host Control field
Whether Cisco UCS controls the class of service (CoS). This can be:
None—Cisco UCS uses the CoS value associated with the priority selected in the Priority drop-down list regardless of the CoS value assigned by the host.
Full—If the packet has a valid CoS value assigned by the host, Cisco UCS uses that value. Otherwise, Cisco UCS uses the CoS value associated with the priority selected in the Priority drop-down list.
Regards
Nethaji V
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