Questions tagged [cisco-nexus]

For questions about the Cisco network product line, called Nexus. For instance, Cisco Nexus 3000, 4000, 5000, 6000, 7000 and 9000.

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understand “switch-profile” for Nexus 5k switches

Am I correct that if there is no switch-profile configured for pair of Cisco Nexus 5k switches, then conf sync does not work regardless that CFS(Cisco Fabric Services) is enabled over management ...
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1answer
4k views

default interface cmd on cisco nexus 5k

Does anyone know of an equivalent "default interface X" comand for the Cisco Nexus 5000 platform? switch>en switch# conf t switch#(config)# default interface x -> dead thread here about the ...
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528 views

NTP architecture questions

I have a question about NTP. We want to setup our core switches as NTP master for our network. We have three data centers. Site A : Two Nexus as core Site B : two Nexus as core Site C : two 6800 (in ...
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2answers
240 views

Applying a queuing service policy

This is on a Nexus N5624Q. I have this TA-queuing service policy : policy-map type queuing TA-queuing class type queuing queue-cos1 bandwidth percent 20 class type queuing queue-cos2 ...
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1answer
2k views

Removing source ports from a SPAN session on a cisco nexus switch

So, I have built a tool that allows users to configure SPAN sessions on a Cisco switch. I'm currently trying to get the application to work for the Nexus series but there is one command I'm not sure ...
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2answers
590 views

Port-Channel Interface Configuration EtherChannel and LACP in same Port-Channel

I currently have two links which form a Port-Channel from 1 cisco device to another. I want to change the port-channel config from channel-group 1 mode on to channel-group 1 mode active So that ...
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2answers
1k views

Communication between VDCs on Cisco Nexus 7000 via virtual interface

Is there any way to create a virtual interface of sorts between two VDCs on a single Nexus 7000 switch? I've read that a physical cable is required (which is lame) however I wasn't sure if this was a ...
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2answers
366 views

UDLD on Nexus 5548 and Nexus 2232

Do you know if I turn on UDLD the 5K and 2K will speak UDLD to each other and do you feel this is a benefit to detect any link issues between the 5K and the FEX? Thanks
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1answer
957 views

intervlan router-on-stick with Nexus

Ok people, same drill on router-on-stick inter-vlan routing between a Cisco router and Cisco switch. Except this time, it's the expensive Nexus instead of Catalyst. 2911#show vlans Virtual LAN ID: ...
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2answers
1k views

Nexus 7000 - switchport Voice configuration

Nexus 7k NXOS 6.2(8a) I am trying to configure a voice vlan but the command does not seem available? Is there something I am missing to enable that? interface Ethernet4/1 description ...
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1answer
173 views

Monitor which SNMP communities are still in use

I am migrating from SNMP community1 to SNMP community2 on a NEXUS switch (plus a bunch of 2960s). Is there a way to monitor that the old community is not used anymore?
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1answer
438 views

vPC over Dark Fiber

Recently, I was asked to implement vPC connections over Dark Fiber between two data centers. Is this possible, and, if it is possible, does it have any drawbacks or limitations? I'm asked to encrypt ...
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2answers
2k views

Nexus 5500 FEX Support

This design guide on networkcomputing.com states the following: When uplinking to Nexus 5Ks, one topology option is to dual-home the physical Fabric Extender. Dual-homing a FEX provides path ...
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2answers
835 views

Cisco OTV vs L2 VPN

Cisco introduce OTV as solution to give two physical separate Data centers l2 connectivity over common L3 network , so why we need that if we have L2 VPN solution ? and what is the benefits of ...
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1answer
2k views

How to copy an image to a corrupt bootflash?

Hi i am trying to copy an image from my ftp server onto a nexus 3500 switch (N3K-C3048TP-1GE) but the switch will not let me access the bootflash at all, is there anything I can do to recover the ...
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1answer
4k views

Cisco Nexus 7k as NTP server

Anyone have experience with setting up their Nexus 7k core as an NTP server? I was thinking the code would look like below: ntp master stratum 2 ntp server ns.arc.nasa.gov prefer ntp server bitsy....
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1answer
8k views

interface showing “Link not connected” on a Nexus 2200 FEX but it is very much connected

I have to be over looking something dumb here but I can't figure it out. The fex is set up properly and is communicating to the Nexus 5548 without issue. There are a few other fexs connected as well. ...

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