Nexus 5500 to Nexus 5500 Fiber Etherchannel with different lengths

Hi,
I'm in the very first phase of designing a small datacenter infrastructure based on the Nexus 5500 series. I haven't got any hands-on nexus experience yet so please forgive me if I'm asking a silly question here...
What I would like to build is a 4 unit, redundant datacenter design. Two units in one DC, and two units in the other. I would like to connect both DCs together using a redundant darkfiber. One link is 10 miles, the other is 20 miles.
The Nexus switches are going to be connected "back-to-back" with and the redundant etherchannel between the DCs, like this http://www.netcraftsmen.net/component/content/article/69-data-center/859-configuring-back-to-back-vpcs-on-cisco-nexus-switches.html
Can I expect any problems with this design? In particular with the different lengths of fiber, like buffering issues or failing transmissions?
Thanks!

That should not be an issue. You will need single mode fiber and single mode optics, and as long as all your optics support distance of 20 miles or more, then you should be fine.
HTH

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Read_duo.vi ‏128 KB
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Hi,
Apprently your LabVIEW is set with the option "enable automatic error handling", you can change this in tools >> options block diagram untick the option.
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When my feet touch the ground each morning the devil thinks "bloody hell... He's up again!"

What is best practice for multi camera edit with differing lengths?

I have three cameras that took video of an engagement party. Camera A and B took it all (with some early extra material exclusive to each camera). Camera C took some, then stopped, then took more.
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Thanks in advance.

A and B which are complete, then C then D.
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When I define the three series, each is stretched over the whole width of the chart. How can I avoid that and force for instance the April values to be displayed above each other? Is it possible at all with this type of chart? (In Excel, it's quite easy...)
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Sabine

Hi,
Youll have to write a query for your series 2 and 3 that has the same number of data points as your series 1 query, in your example that would be 12. Line series charts are always stretched over the full width by design. The months for which you have no data, would have a value of NULL. Please note that there is one issue, which has been fixed in 2.2, that causes the charting engine to only render dots instead of lines for series 2, 3, , if they have a NULL value at the last data point. So if I understand your requirements correctly, you should try this on our 2.2 hosted beta instance, and then upgrade to 2.2 when it comes out.
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Hi,
We have a scenario where one material can be sold at different length.
Ex: Mat A is wire
1 mr std price $2
2 Mr std price $5
3 mr std price $6
etc., till 10 mtr
user wants to have same material number but to handle the all the prices in standard price at different lengths.
I recommended that this is not possible with SAP so go with different materialnumbers with different lengths.
Is that correct or am i missing something from functionality, can any one help.

Hi,
The product is not manufactured its procured from vendor.
If the customer places an order for 5 mt then the the same will bought from vendor and sell to customer.
No inhouse manufacturing or assembling
we recommended to use the different material code for different length.
Just want to confir if thats correct or we can we use one material code for all lenghts.
if we use Variant pricing that will help Sales order process but standard cost in material cannot be updated using variant pricing.

Very low transfer speed issue on SUN4270 M2 server connected with nexus 5548 switch on 10GB fiber.

                   Hi,
I have 2 SUN 4270 M2 servers connected with Nexus 5548 switch over 10Gb fiber card. I am getting performance of just 60 MB per second while transfer of 5Gb file across 2 servers. The similar speed i use to get on 1Gb network also. Please suggest how to improve the tranfer speed. On servers, ports ET4 and ETH5 are bonded in bond0 with mode=1. The server envrionment will be used for OVS 2.2.2.
Below are the details of network configuration on server. I quick help will be highly appriciated--
[root@host1 network-scripts]# ifconfig eth4
eth4      Link encap:Ethernet HWaddr 90:E2:BA:0E:22:4C
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:5648589 errors:215 dropped:0 overruns:0 frame:215
          TX packets:3741680 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2492781394 (2.3 GiB) TX bytes:3911207623 (3.6 GiB)
[root@host1 network-scripts]# ifconfig eth5
eth5      Link encap:Ethernet HWaddr 90:E2:BA:0E:22:4C
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:52961 errors:215 dropped:0 overruns:0 frame:215
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3916644 (3.7 MiB) TX bytes:0 (0.0 b)
[root@host1 network-scripts]# ethtool eth4
Settings for eth4:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 1000baseT/Full
                                10000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 10000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
[root@host1 network-scripts]# ethtool eth5
Settings for eth5:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 1000baseT/Full
                                10000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 10000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
[root@host1 network-scripts]#
[root@host1 network-scripts]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.2.4 (January 28, 2008)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth4
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth4
MII Status: up
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0e:22:4c
Slave Interface: eth5
MII Status: up
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0e:22:4d
[root@host1 network-scripts]# modinfo ixgbe | grep ver
filename:       /lib/modules/2.6.18-128.2.1.4.44.el5xen/kernel/drivers/net/ixgbe/ixgbe.ko
version:        3.9.17-NAPI
description:    Intel(R) 10 Gigabit PCI Express Network Driver
srcversion:     31C6EB13C4FA6749DF3BDF5
vermagic:       2.6.18-128.2.1.4.44.el5xen SMP mod_unload Xen 686 REGPARM 4KSTACKS gcc-4.1
[root@host1 network-scripts]#brctl show
bridge name     bridge id               STP enabled     interfaces
vlan301         8000.90e2ba0e224c       no              bond0.301
vlan302         8000.90e2ba0e224c       no              vif1.0
                                                        bond0.302
vlan303         8000.90e2ba0e224c       no              bond0.303
vlan304         8000.90e2ba0e224c       no              bond0.304
[root@host2 test]# ifconfig eth5
eth5      Link encap:Ethernet HWaddr 90:E2:BA:0F:C3:15
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:4416730 errors:215 dropped:0 overruns:0 frame:215
          TX packets:2617152 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:190977431 (182.1 MiB) TX bytes:3114347186 (2.9 GiB)
[root@host2 network-scripts]# ifconfig eth4
eth4      Link encap:Ethernet HWaddr 90:E2:BA:0F:C3:15
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:28616 errors:3 dropped:0 overruns:0 frame:3
          TX packets:424 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4982317 (4.7 MiB) TX bytes:80029 (78.1 KiB)
[root@host2 test]#
[root@host2 network-scripts]# ethtool eth4
Settings for eth4:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 1000baseT/Full
                                10000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 10000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
[root@host2 test]# ethtool eth5
Settings for eth5:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 1000baseT/Full
                                10000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 10000Mb/s
        Duplex: Full
        Port: FIBRE
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes
[root@host2 network-scripts]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.2.4 (January 28, 2008)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth5
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth5
MII Status: up
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0f:c3:14
Slave Interface: eth4
MII Status: up
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0f:c3:15
[root@host2 network-scripts]# modinfo ixgbe | grep ver
filename:       /lib/modules/2.6.18-128.2.1.4.44.el5xen/kernel/drivers/net/ixgbe/ixgbe.ko
version:        3.9.17-NAPI
description:    Intel(R) 10 Gigabit PCI Express Network Driver
srcversion:     31C6EB13C4FA6749DF3BDF5
vermagic:       2.6.18-128.2.1.4.44.el5xen SMP mod_unload Xen 686 REGPARM 4KSTACKS gcc-4.1
[root@host2 network-scripts]#brctl show
bridge name     bridge id               STP enabled     interfaces
vlan301         8000.90e2ba0fc315       no              bond0.301
vlan302         8000.90e2ba0fc315       no              bond0.302
vlan303         8000.90e2ba0fc315       no              bond0.303
vlan304         8000.90e2ba0fc315       no              vif1.0
       bond0.304
Thanks....
Jay

Hi,
Thanks for reply..but the RX errors count is keep on increasing and the transfer speed between 2 servers are max 60MB/ps on 10GB FC card. Even on storage also, i am getting the same speed when i try to transfer data from server to storage on 10GB FC card. Servers and storage are connected through Nexus 5548 switch.
#ifconfig eth5
eth5      Link encap:Ethernet HWaddr 90:E2:BA:0E:22:4C
          UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
          RX packets:21187303 errors:1330 dropped:0 overruns:0 frame:1330
          TX packets:17805543 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:624978785 (596.0 MiB) TX bytes:2897603160 (2.6 GiB)
JP

Stackable switche options with Nexus range? - Nexus 3172

Hi all,
We are looking at upgrading our Rack switches. We have 3 racks and need about 80 10Gig copper/RJ45 server ports per rack. We are fairly price conscious.
I am new to Nexus product range, but have a lot of experience with Catalyst switches.
We are considering Nexus 3172T switches. But I’m not sure if they are really suitable because they don’t stack.
I would far rather a switch model that we can stack together so I don’t need to manage each switch individually (much as you would do with Catalyst 3750). We did look at Catalyst 4500X but they are too expensive.
Initially we only need Layer2 switches, but I would really prefer stackable switches in case we move to Layer3 switches (I don’t want to have to muck around with HSRP).
It really seems to be a big hole in the Cisco product range. Every other vendor we have looked at has a Virtual Chassis (Juniper, HP, Brocade) system that would be idea. Cisco have VSS in the 4500x but its pretty rubbish as it only allows two switches.
What sort of options do I have with Cisco Nexus at a reasonable price?
Simon

I would suggest you read this white paper which details the pros and cons of direct connect storage.
http://www.cisco.com/en/US/partner/prod/collateral/ps10265/ps10276/whitepaper_c11-702584.html This paper captures all the major design points for Ethernet and FC protocols.
I would only add that in FlexPod we are trying to create a highly available solution and "flexible" solution; Nexus switching helps us deliver on both with vPC and unified ports.
NPV equats to end-host mode which allows the system to present all of the servers as N ports to the external fabric. In this mode, the vHBAs are pinned to the egress interfaces of the fabric interconnects. This pinning removes the potential of loops in the SAN fabric. Host based multipathing of the vHBAs account for potential uplink failures. The NPV mode (end-host mode) simplifies the attachment of UCS into the SAN fabric and that is why it is in NPV mode by default.
So for your last question, I will have to put my Product Manager hat on so bear with me. First off there is no drawback to enabling the NPIV feature (none that I am aware of) the Nexus 5000 platform simply offers you a choice to design and support multiple FC initiators (N-Ports) per F-Port via NPIV. This allows for the integration of the FI end-host mode described above. I imagine being a unfied access layer switch, the Nexus team enabled standard Fibre Channel switching capability and features first. The implementatin of NPIV is a customer choice based on their specific access layer requirements.
/Chris

Does DCNM ver 5.2 on Nexus 7k manage nexus 5k??

Dear ,
Does DCNM (DCNM-N7K-K9) ver 5.2 on Nexus 7k manage nexus 5k??
thanks
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Yes. DCNM runs on a server though - not on a Nexus 7k itself.
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A dark fiber connection with SFPs is no different than a 1 foot long copper patch cable that connects the two switches as if they were in the same room (less than 1 foot apart). Perhaps you are over thinking it. Just configure the ports much like you would if the switches were next to each other.

A local company has started offering Fiber Connections at much better speeds then Time Warner. They threw in Dark Fiber (Secure Connections) between our two offices (2 miles between the two offices). Unfortunately the techs at the company are not used to Netgear (only knows Cisco) and don't know how to get the two offices to connect over Netgear with our new Dark Fiber. They did get us two SFP connectors with Dual Mode Communication and connected the Fiber on both ends. I am a new Network Admin and still trying to figure this out myself. I thought I would be able to set a routing rule....saying if the IP Address destination is at our second location to send the communication over the Fiber Connection instead of the VPN/internet connection....I have been reading through the Software Admin Manual and searching the net but so far I am not...
This topic first appeared in the Spiceworks Community

Is it possible for Nexus7000 flexible netflow monitor for interfaces with different vrf and export to one netflow analyzer?

I have a Nexus 7000 with many vlan interfaces with multiple vrf, I would like to know if my netflow analyzer only connected to one vrf, can I use flexible netflow on the Nexus 7000 to monitor those vlan interfaces with multiple vrf and export them to my netflow analyzer, so that I can see all flow from different vrfs on my netflow analyzer?
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Adriano, there is a RV042G, which supports the gig ports and a 800 mbps nat throughput. Here is the datasheet
http://www.cisco.com/en/US/prod/collateral/routers/ps10907/ps9923/ps12262/data_sheet_c78-706724.html
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http://www.cisco.com/en/US/docs/voice_ip_comm/unified_communications/srp540_series/administration/srp500_AG_2567701.pdf
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http://www.cisco.com/en/US/prod/collateral/voicesw/ps6790/gatecont/ps10500/data_sheet_c78-550705.pdf

Same user in tacacs and local database with different privilege

Hi there,
i am just not sure if this is correct behavior.
i am running NX-OS image n5000-uk9.5.1.3.N1.1.bin on the nexus 5020 platform.
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aaa authentication login default group ACS
aaa authorization commands default group ACS local
aaa accounting default group ACS
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thank you for help...

Hello.
Privileges are used with traditional IOS. Privileges are part of "command authorization". Other operating systems (like IOS-XR, Nexus OS , Juniper JunOS) use "role-based authorization" instead of "command authorization".
So traditional IOS can use the "privilege" attribute but other operating systems can not.
Although IOS-XR, Nexus, ACE, Juniper have "roled-based authorization" feature, every single one of them use their particular attributes.
When I was configuring TACACS with ACE, Juniper and other devices I had to capture the packets to find out what were the particular attributes of ACE, what were the particular attributes of JunOS, etc, etc and to search deeply some hints the documentation , because sadly documentation is not very good when talking about TACACS details.
If you find which attributes to use, and what values to assign to the attributes then you can go to ACS and configure a "Shell Profile".
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http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/security/502_n1_1/Cisco_n5k_security_config_gd_rel_502_n1_1_chapter5.html
I will search the particular attributes Nexus use to talk to TACACS server. If I got them I will post them here.
Please rate if it helps

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short
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Is this possible without mixing up address books and contacts etc? Appreciate if some one could direct me to detail step-by-step instructions if they exist or please tell me how I can do this.
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Nexus 5500 to Nexus 5500 Fiber Etherchannel with different lengths

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