Catalyst 3850 QoS police

Hello,
Here is the config for Catalyst 3560 found under the link below.
I would like to do same setting on Catalyst 3850.
http://itknowledgeexchange.techtarget.com/network-engineering-journey/how-to-configure-per-vlan-qos-in-cisco-3550-and-3560/
mls qos
interface fa0/2
mls qos vlan-based
class-map INT
match input-interface fa0/2
policy-map NESTED_POLICE
class INT
policy 12800 1600 exceed-action drop
class-map HTTP
match protocol http
policy-map PARENT_MARK
class HTTP
set dscp af11
service-policy NESTED_POLICE
interface vlan 10
service-policy input PARENT_MARK
But commands like "mls qos", "mls qos vlan-based" and "match input-interface " doesn't work on 3850.
There is no helpful Cisco manual for it.
Could anyone help me?
Thanks in advance,
Taro

Hello Paul,
Thank you for the attention.
Here is the information.
#sh ver
Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.02.01.SE RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2013 by Cisco Systems, Inc.
Compiled Wed 20-Mar-13 17:10 by prod_rel_team
Cisco IOS-XE software, Copyright (c) 2005-2013 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.
(http://www.gnu.org/licenses/gpl-2.0.html) For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.
ROM: IOS-XE ROMMON
BOOTLDR: C3850 Boot Loader (C3850-HBOOT-M) Version 1.1, RELEASE SOFTWARE (P)
SW01 uptime is 21 weeks, 6 days, 14 hours, 27 minutes
Uptime for this control processor is 21 weeks, 6 days, 14 hours, 30 minutes
System returned to ROM by reload at 22:27:58 JST Wed Jan 8 2014
System restarted at 22:27:52 JST Wed Jan 8 2014
System image file is "flash:packages.conf"
Last reload reason: Reload command
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].
License Level: Ipservices
License Type: Permanent
Next reload license Level: Ipservices
cisco WS-C3850-24T (MIPS) processor with 4194304K bytes of physical memory.
Processor board ID FOC1717V01B
24 Virtual Ethernet interfaces
56 Gigabit Ethernet interfaces
8 Ten Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
250456K bytes of Crash Files at crashinfo:.
250456K bytes of Crash Files at crashinfo-2:.
1609272K bytes of Flash at flash:.
1609272K bytes of Flash at flash-2:.
0K bytes of Dummy USB Flash at usbflash0:.
0K bytes of Dummy USB Flash at usbflash0-2:.
0K bytes of at webui:.
Base Ethernet MAC Address          : 44:ad:d9:6d:4e:00
Motherboard Assembly Number        : 73-12238-06
Motherboard Serial Number          : FOC17163HB8
Model Revision Number              : B0
Motherboard Revision Number        : D0
Model Number                       : WS-C3850-24T
System Serial Number               : FOC1717V01B
Switch Ports Model              SW Version        SW Image              Mode
     1 32    WS-C3850-24T       03.02.01.SE       cat3k_caa-universalk9 INSTALL
     2 32    WS-C3850-24T       03.02.01.SE       cat3k_caa-universalk9 INSTALL
Switch 02
Switch uptime                      : 21 weeks, 6 days, 14 hours, 31 minutes
Base Ethernet MAC Address          : 20:bb:c0:01:86:80
Motherboard Assembly Number        : 73-12238-06
Motherboard Serial Number          : FOC17163HCM
Model Revision Number              : B0
Motherboard Revision Number        : D0
Model Number                       : WS-C3850-24T
System Serial Number               : FOC1717V01K
Configuration register is 0x102
SW01#sh sdm prefer
Showing SDM Template Info
This is the Advanced template.
Number of VLANs:                                 4094
Unicast MAC addresses:                           32768
Overflow Unicast MAC addresses:                  512
IGMP and Multicast groups:                       8192
Overflow IGMP and Multicast groups:              512
Directly connected routes:                       32768
Indirect routes:                                 8192
Security Access Control Entries:                 3072
QoS Access Control Entries:                      2816
Policy Based Routing ACEs:                       1024
Netflow ACEs:                                    1024
Input Microflow policer ACEs:                    256
Output Microflow policer ACEs:                   256
Flow SPAN ACEs:                                  256
Tunnels:                                         256
Control Plane Entries:                           512
Input Netflow flows:                             8192
Output Netflow flows:                            16384
These numbers are typical for L2 and IPv4 features.
Some features such as IPv6, use up double the entry size;
so only half as many entries can be created.

Similar Messages

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Hello there:
Just a generic, design question, after doing much reading, I am just not clear as when to use one or the other, and what the benefits/tradeoffs are:
Should we configure the switch stack w/ layer 3, or layer 2 VLANs?
We have a Catalyst 3850 Stack, connected to an ASA-X 5545 firewall via 8GB etherchannel.
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If all of your servers are going to the 3850 then I'd say you've got the wrong switch model to do DC job. If you don't configure QoS properly, then your servers will start dropping packets because Catalyst switches have very, very shallow memory buffers. These memory buffers get swamped when servers do non-stop traffic.
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Hello,
I am an engineer working with a Cisco Gold Partner in Saudi Arabia. We have a large university as our client where they are constructing a new
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At present, I have no issues in implementing the R&S infrastructure as it is very straight forward but it has implications on the deployment of
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To make things more complicated, since the new building will have its own Layer 3 distribution switch and the Catalyst 3850 switches will connect
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As such, I have the following questions:
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as the existing WLC 5508 which then cater for Layer 3 client roaming or I have to treat this as a totally seperate WLAN network and follow on to
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Would this facilitate in Layer 3 client roaming and RRM for all the controllers in the same MD?
Q3) If I do create a MD, how is this accomplished in such an environment since the documentation is severely limited in this regard?
Please advise at your earliest. To assist further, I have attached a topology diagram which may aid in explaining the situation with more
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Regards,
Amir

Hi Amir,
Q1) If we create new SVIs for the SSIDs (same SSIDs names will be used in the new building as in the rest of the university campus) this means that new subnets will be assigned to these SSIDs. Now, I believe I have two options...one is to make the new Catalyst 3850s to be in the same MG as the existing WLC 5508 which then cater for Layer 3 client roaming or I have to treat this as a totally seperate WLAN network and follow on to the solution as per the next question. Please advise which is a better option?
I would configure them in the same mobility group. Also configure same SPG for those two 3850 stacks if users are frequently roaming within these two buildings.
Q2) I could create separate MG i.e. the new building Catalyst 3850s can be in one MG and the existing controllers can be in another MG. I can then have one of the existing WLC 5508 (the primary one) to run the Mobility Oracle (MO) feature so as to create a single Mobility Domain (MD). Would this facilitate in Layer 3 client roaming and RRM for all the controllers in the same MD?
MO is not required (it is only for very large scale deployments)
Q3) If I do create a MD, how is this accomplished in such an environment since the documentation is severely limited in this regard?
Yes, documents are hard to find :(
These notes may be useful to you based on my experience. I am running IOS-XE 3.6.1 in my production.
http://mrncciew.com/2014/05/06/configuring-new-mobility/
http://mrncciew.com/2013/12/14/3850ma-with-5760mc/
HTH
Rasika
*** Pls rate all useful responses ****

Cisco Catalyst 3850 as ntp master

Hi All,
I have 2 x Cisco Catalyst 3850 stacked together. What are your recommendations if I use the C3850 as a ntp master for all edge switches connected in my network? All edge switches must be authenticated if it needs NTP sychronization. But other than that, what are the downsides?
For example,
1. I heard that switches do not have an internal clock so is a poor device to be a centralized NTP master.
2. I have also read that switches also have slow CPU processors that may lack the processing required.
3. Its NTP sychronization will use external NTP servers which are resolved into IP addresses (e.g. pool.ntp.org). IP address can change. What other more reliable NTP sources are there?
4. Any other thoughts and comments are most welcome.

Firstly, DO NOT use the command "ntp master". Cisco do not recommend using this commands because this will confuse the NTP propagation inside the network.
Next, all Cisco devices do not have a dedicated clock. All appliances need to get SNTP/NTP time synch from somewhere. This "somewhere" could either be a dedicated GPS-based NTP server and/or a time synch somewhere out in the internet.
You can also use the command "ntp update-calendar". This new command allows appliances to take regular "snapshot" of the time and save it into the NVRAM. In case there was a reboot or a power failure, the appliance's time is not too far away instead of waiting 5 to 10 minutes for SNTP/NTP to synch.

Distributed multicast routing command not working on Catalyst 3850 switch

Hi Cisco community,
I was wondering if there is a known problem as to why the ip multicast-routing [distributed] option is not available on the Cat 3850 platforms
global command " ip multicast-routing " is accepted
the configuration guide named:
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches)
First Published: January 29, 2013
Last Modified: October 22, 2013
explains that this option "key word" [distributed] should be available>
Enables IP multicast routing.
ip multicast-routing [distributed]
Device(config)# ip multicast-routing distributed
=============== Here is what i have and see =========
Config attempt
============
CAT-3850-1(config)#ip multicast-routing distributed
^
Show command:
========
CAT-3850-1#show ip multicast
Multicast Routing: enabled
Multicast Multipath: disabled
Multicast Route limit: No limit
Multicast Fallback group mode: Sparse
Number of multicast boundaries configured with filter-autorp option: 0
Software:
========
Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M),
Version 03.03.03SE RELEASE SOFTWARE (fc2)
License rights:
============
CAT-3850-1#sh license right-to-use
Slot# License name Type Count Period left
1 ipservices permanent N/A Lifetime
1 apcount adder 10 Lifetime
License Level on Reboot: ipservices
Slot# License name Type Count Period left
2 ipservices permanent N/A Lifetime
2 apcount adder 10 Lifetime
License Level on Reboot: ipservices
Any hints and help would be greately appreciated.
Many thanks in advance
Markus

Hi Reza,
Thank you for your quick reply, and for putting the record staright. As such, a helpful rating was provided
PS: Feel free to help me one more time if you happend to know folllow on this query :)>
I guess that the disributed function has been included in the standard mulitcast routing command because the key word is no longer needed. Or perhaps this platform does not support this at all.#
Once again , thank you for your help above.
Best regards

Bandwidth Management(Rate Limit) Using QoS Policies

Hello,
I need some advice. We have an ASA 5525 running version 8.6(1)2 and a 10 MG pipe. I have execs that want to limit bandwidth on users for stuff like youtube, stream media, and downloads. I found the article on ‘Bandwidth Management(Rate Limit) Using QoS Policies’ so it appears our firewall can do what we want. I’m not a cisco person. My knowledge is limited when it comes to configuration – that’s why we have SmartNet :). The advice I need is what to ask for, so to speak, when I put a case in. Can bandwidth be limited on end users and/or can they limit the ‘bandwidth rate limit’ to just youtube, steaming media, and downloads? If so, what should the limit be? and I’m assume this would be for ‘incoming’ traffic only? we’re running into some bandwidth hogs – usually youtube and/or streaming media. We have a Barracuda web filter which we’ve used to block and monitor activity but I simply do not have time to babysit this all day. I should also mention we do have critical data running up and down the pipe; such as credit card processing, DB replication between in house DB and hosted website, TPCx and EDI, FTP, and such that we don’t want restricted.
Need input please,
Thanks,
D

Hello,
That's a question that you as the network admin of that organization could answer.
How much traffic for business purposes must travel via HTTP/HTTPS?
How much bandwith are you willing to provide to this 2 protocols?
Those are the kind of answers you need to answer before setting the number
Regards
Remember to rate all of the helpful posts, Just click the 5 stars at the left of each post
Julio

NBAR, Netflow, QoS Policing, 6500s, IOS 12.1(26)E7, and MARS

Hello. I'm having trouble seeing the forest OR the trees, and I'd appreciate some help from someone who has a better field view than myself. We're upgrading our internet connection to 200MB and management is wanting to upgrade our Packet Shaper to meet the new bandwidth. (The Packet Shaper shows top talkers, top protocols, and rate limits protocols or users.) I'm trying to make the argument that we can do this w/ existing tools (nbar, netflow, QoS policing, and MARS), at the same time I'm trying to make the argument that we need to have our supervisors (currently SUP2 MSFC2) on a 3-4 year upgrade cycle.
To get to the 12.2 IOS, I'd require a memory or sup upgrade. What I am hoping for is someone who has gone down this road who knows what I'm lacking in 12.1 code, or if in fact I can do it all here.
While it is self-evident to most in IT why we need to regularly upgrade equipment, I'm having difficulty making this argument to management with hard facts. I'm guessing they'd still be running Windows for Workgroups to save money...but that's another story.
My plan is to use Netflow and MARS to track top users and top protocols. It appears that I lose some mgt functionality w/ MARS in conjunction w/ IOS 12.1, but I am currently unclear if I lose any tracking capability. (MARS is new to us and awaiting install.)
Then, I hope to use NBAR to identify all the latest P2P traffic and police it appropriately w/ QoS tools.
Does my thinking sound solid? Will I be able to pull this off w/ 12.1? If not, what do I need that I lack in 12.1?
Thank you for your time,
Joshua

Hi,
First of all - you need to be clear that although MARS uses netflow data, it uses it for the purpose of identifying security issues. If you want to use netflow for reporting and/or accounting purposes MARS isn't the tool you need, try one of the following freeware netflow tools:
http://www.cisco.com/warp/public/732/Tech/nmp/netflow/partners/freeware/index.shtml
or one of the following commercial tools:
http://www.cisco.com/warp/public/732/Tech/nmp/netflow/partners/commercial/index.shtml
The freeware ones are generally more difficult to set up but once running are just as good as the commercial ones.
However, this means you need two netflow destinations - one for MARS and one for your netflow tool, and this feature is called "Netflow Multiple Export Destinations" and initially appeared at 12.1(3)T, but it seems to be VERY platform specific - for example, because we only run GD software on our 3660's we had to upgrade to 12.3(20) to get it.
Looking at the Feature Navigator for SUP2/MSFC2 it appears that you need at least 12.2(18)SXF6 to get this feature so that might help your case.
I'd personally keep the PacketShaper for it's reporting capability if nothing else (IOS can do the job, but not as elegantly as the PacketShaper).
HTH - plz rate if useful.
Andrew.

Catalyst 3850 vs Nexus 3K

Hi ,
I have a question. If the only requirement for the DC is to have iSCSI for some servers , is it better to go for Nexus 3K or I should choose Cat 3850. Apparently with 10 gig uplinks Cat 3850 is more expensive. Can someone plz tell what would be the benefits of each in this scenario?
Fawad

Hi ,
Cat 3850 is mainly used for unify wired and wireless networks. Cisco Catalyst 3850 Switches, which combine wired and wireless by supporting wireless tunnel termination and full wireless LAN controller functionality.
In other hand , Nexus 3000 is datacenter top of the rack switch and low latency , unify data ad storage switch and well suited for your Iscsi requirement . so i would suggest nexus 3000 .
HTH
Regards,
VS.Suresh.
*Plz rate the usefull posts *

About Catalyst 3850 Wireless Multicast

Hello
i'm testing for catalyst 3850 wireless multicast, and i've tried several configurations but it's always fault. I took a pc with the wired as the multicast video source, and another pc as the receiver with wireless, the two pc in the same vlan, for example, vlan 10. the followed is the detail configuration about 3850.
<omitted>
ip routing
ip multicast-routing
ip multicast auto-enable
ip igmp snooping querier
interface Vlan6 ------The Access Point Vlan and it's the same vlan as wireless management vlan
description TO-Wireless_AP
ip address 192.168.6.254 255.255.255.0
ip pim sparse-dense-mode
interface Vlan10 ----The video source vlan and the wireless receiver client vlan.
description TO-EXSi
ip address 192.168.10.254 255.255.255.0
ip pim sparse-dense-mode
wireless mobility controller
wireless management interface Vlan6
wireless multicast
wlan VideoStream 3 VideoStream
client vlan 10
no security wpa
no security wpa akm dot1x
no security wpa wpa2
no security wpa wpa2 ciphers aes
no shutdown
ap capwap multicast 239.100.1.1
<omitted>
The video multicast group address is 239.100.1.1, here are some show command results.
show ip mroute
(*, 239.100.1.1), 00:01:13/stopped, RP 10.1.1.1, flags: SPF
Incoming interface: GigabitEthernet1/0/1, RPF nbr 10.0.0.2
Outgoing interface list: Null
(192.168.10.6, 239.100.1.1), 00:01:13/00:01:46, flags: PFT
Incoming interface: Vlan10, RPF nbr 0.0.0.0
Outgoing interface list: Null
(*, 239.255.255.250), 01:21:59/00:02:05, RP 10.1.1.1, flags: SJC
Incoming interface: GigabitEthernet1/0/1, RPF nbr 10.0.0.2
Outgoing interface list:
Vlan5, Forward/Sparse-Dense, 01:21:59/00:02:05
(*, 224.0.1.40), 01:21:59/00:02:02, RP 10.1.1.1, flags: SJCL
Incoming interface: GigabitEthernet1/0/1, RPF nbr 10.0.0.2
Outgoing interface list:
Vlan5, Forward/Sparse-Dense, 01:21:59/00:02:02
show ip igmp snooping wireless mgid
Total number of L2-MGIDs = 3
Total number of MCAST MGIDs = 0
Wireless multicast is Enabled in the system
Vlan bcast nonip-mcast mcast mDNS-br mgid Stdby Flags
1 Disabled Disabled Enabled Enabled Disabled 0:0:1:0
5 Disabled Disabled Enabled Enabled Disabled 0:0:1:0
6 Disabled Disabled Enabled Enabled Disabled 0:0:1:0
7 Disabled Disabled Enabled Enabled Enabled 0:0:1:0
8 Disabled Disabled Enabled Enabled Enabled 0:0:1:0
9 Disabled Disabled Enabled Enabled Disabled 0:0:1:0
10 Disabled Disabled Enabled Enabled Enabled 0:0:1:0
1002 Enabled Enabled Enabled Enabled Disabled 0:0:1:0
1003 Enabled Enabled Enabled Enabled Disabled 0:0:1:0
1004 Enabled Enabled Enabled Enabled Disabled 0:0:1:0
1005 Enabled Enabled Enabled Enabled Disabled 0:0:1:0
Index MGID (S, G, V)
The C3850 software version is Version 03.03.03SE RELEASE SOFTWARE (fc2), and i've tried the Version 03.02.02SE, it's the same result. if the multicast not worked, i can't do the Videostream function demo next step.

if video multicast group is 239.100.1.1, then same group cannot be configured for AP mcast -mcast mode communication.
Try this:
config t
no ap capwap multicast 239.100.1.1
ap capwap multicast 239.10.10.10
regards,
sudha

Disabling Catalyst 3850 Stack Discovery?

At Cisco Live! 2013 Orlando a mention was made which I understood to mean that by turning off the stacking ports of a Catalyst 3850 the switch would not wait for stack discovery but proceed with the boot sequence (by virtue of knowing the topology i.e. no other switches).
However, if I issue
switch 1 stack port 1 disable
switch 1 stack port 2 disable
save the config and do a reboot, the switch still sits for a long time just before the stack discovery completion messages, and boots no faster than a default out-of-the-box switch. Did I misunderstand, or is there some other command to tell the switch to not bother with stack discovery?

Here is a late reply:
It doesn't disable it completely:
When a stack port is flapping and causing instability in the stack, be careful when using the switch stack-member-number stack port port-number disable privileged EXEC command. When you disable the stack port, the stack operates at half bandwidth.

Catalyst 3850 rack mount kit: 3850-RACK-KIT or C3850-4PT-KIT ?

When purchasing a Cisco Catalyst 3850, do we need to buy the rack mounting kit to install it in a standard 19" rack? 3850-RACK-KIT or C3850-4PT-KIT ? Is the 4-point kit really necessary, can the 3850 hang only on the front of the rack?

No, you don't need the C3850-4PT-KIT. 3850-RACK-KIT comes in the box and it is good enough as long as you rack it nice and tide. The reason some people use C3850-4PT-KIT is because the switch will hang from the back a little when using 3850-RACK-KIT and so if you don't like that than you want the 4PT.
HTH

3850 QoS question

Hello,
I am trying to upgrade from 3750 to 3850. Following is my outbound WTD qos config on 3750:
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 1 2 4
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 46
mls qos srr-queue output dscp-map queue 2 threshold 1 16 18 20 22 32 34 36 38
mls qos srr-queue output dscp-map queue 2 threshold 2 24 26 28 30
mls qos srr-queue output dscp-map queue 2 threshold 3 48 56
mls qos srr-queue output dscp-map queue 3 threshold 3 0
mls qos srr-queue output dscp-map queue 4 threshold 1 8
mls qos srr-queue output dscp-map queue 4 threshold 3 4 10 12 14
mls qos queue-set output 1 threshold 2 70 80 100 100
mls qos queue-set output 1 threshold 4 40 100 100 100
What will be the equivalent config for the 3850? I am not able to find the right documentation for 3850.
Following is what I created but I believe it wouldnt handle WTD.
class-map match-any EF
match dscp ef
class-map match-any CS3AF41
match dscp cs3 af41
class-map match-any AF21
match dscp af21
class-map match-any AF11
match dscp af11
class-map match-any Default
match dscp default
policy-map QOS-OUTBOUND
class EF
   priority level 1
class CS3AF41
   priority level 2
class AF21
   bandwidth remaining percent 20
   shape average percent 100
class AF11
   bandwidth remaining percent 20
   shape average percent 100
class Default
   bandwidth remaining percent 60
   shape average percent 100
Also, when I try to apply this to an interface, it accepts it but its not visible under show runn. Am I missing anything?
I would appreciate any help with this.
Thank you.

Hi,
3850 is not supporting MLS QoS (so any QoS commands start with mls keyword is not applicable in this switch platform- even thoug they are accepted).
It is a MQC QoS based switch platform (like 6500,4500). There are few Queing models (1P7Q3T, 2P6Q3T for wired & 2P2Q for wireless) supported in this platform. Please refer below post for more detail
http://mrncciew.com/2013/12/23/3850-qos-part-2-queuing-models/
Based on this you need to derive your config changes. As you can see in the above "queue limit x " is the command used to configure WTD for non-priority queues (ie Q2 to Q6)
Regarding running config, you can use "show running-config all" command to see all the configuration lines of your switch including default configs
HTH
Rasika
***Pls rate all useful responses ****

How many Cisco Catalyst 3850 switches can make up a Cisco StackPower stack?

I know the number of Cisco 3850 switches for stacking is 9, so, if I make up a Cisco StackPower stack, MAX is 9, too?

Hi, emma, only 4 switches can become part of the same Cisco StackPower stack in a ring topology.
For the Cisco 3850 switches stack number,there are two types:
Up to 9 Cisco Catalyst 3850 switches can be stacked together to build single logical StackWise-480 switch since Cisco IOS XE Release 3.3.0SE. Prior to Cisco IOS XE Release3.3.0SE, up to 4 Cisco Catalyst 3850 switches could be stacked together.

Cisco Catalyst 3850 switches

How many Cisco Catalyst 3850 switches can stack into a single logical entity?

Hi, emma, only 4 switches can become part of the same Cisco StackPower stack in a ring topology.
For the Cisco 3850 switches stack number,there are two types:
Up to 9 Cisco Catalyst 3850 switches can be stacked together to build single logical StackWise-480 switch since Cisco IOS XE Release 3.3.0SE. Prior to Cisco IOS XE Release3.3.0SE, up to 4 Cisco Catalyst 3850 switches could be stacked together.

Catalyst 3850 Stack - 10G Modules

I have installed a (3) switch stack of Catalyst 3850 switches. I installed a 10G module in the 1st switch (the master) configured it and plugged it into the network and all works fine. Now I would like to add a second 10 Gigabit Ethernet connection to the stack in a channel group. When I install the 10G module into the standby switch (switch 3) I can do a "show inventory" and the 10G module is there. I can configure TenGigabitEthernet 3/1/3 and do a show run interface TenGigabitEthernet 3/1/3 all looks normal, but when I do a "show interface status" it is not listed and I cannot get the interface to come up. Is there anything I maybe missing when installing the 10G module or in my configurations?
Thanks!

Hello Martin,
As a reference, please look at this link, it may help you,
https://supportforums.cisco.com/docs/DOC-36084
Berta.
MARTIN HUERTER escribió:I have installed a (3) switch stack of Catalyst 3850 switches. I installed a 10G module in the 1st switch (the master) configured it and plugged it into the network and all works fine. Now I would like to add a second 10 Gigabit Ethernet connection to the stack in a channel group. When I install the 10G module into the standby switch (switch 3) I can do a "show inventory" and the 10G module is there. I can configure TenGigabitEthernet 3/1/3 and do a show run interface TenGigabitEthernet 3/1/3 all looks normal, but when I do a "show interface status" it is not listed and I cannot get the interface to come up. Is there anything I maybe missing when installing the 10G module or in my configurations?Thanks!

Catalyst 3850 QoS police

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