04-26-2015 04:50 AM - edited 03-07-2019 11:44 PM
Hello All,
We have a single 2248 connected in dual homed fashion to two nexus 5000 series switches, in vpc.
the aim is to disconnect the 2248 from the 5000 switches.
Appreciate if i can get to know how this can be done (should the port channel be shutdown first or the individual ports),& the respective commands to do this please. how should the vpc association with port-channel be disconnected?
Will there be any impact on other connections in 5000 when these are disconnected?
Thanks in advance.
Solved! Go to Solution.
04-28-2015 05:39 PM
Hi,
As soon as you shut down po21, the FEX will go offline. After that you can disassociate the physical ports from the po21 (no channel-group 21), fex (no fex associate 21) and than delete po21 all together.
If you don't feel comfortable doing it during production, disconnect the FEX during a maintenance window.
HTH
04-26-2015 07:06 AM
Hi,
As long as you delete only the VPC for the specific 2248, there will not be any impact on other devices connected to the 5000 switches. Simply delete the specific VPC and the Portchannel and disconnect the 2248 physically from the 5000.
HTH
04-26-2015 06:56 PM
Thanks for the reply.
So, will the following sequence be correct;-
- under the port channel, delete the vpc or shutdown the port-channel
- disconnect the 2248's
04-26-2015 07:14 PM
Yes, that should work fine.
HTH
04-28-2015 03:20 PM
Thanks again for the reply.
Following are the commands in the switch now associated with the Nexus 2000 connections.
int port-channel 21
vpc21
int port-channel 21
switchport mode fex-fabric
fex associate 21
spanning-tree port type network
vpc 21
int eth1/11
switchport mode fex-fabric
fex associate 21
spanning-tree port type network
channel-group 21
int eth1/12
switchport mode fex-fabric
fex associate 21
spanning-tree port type network
channel-group 21
To remove/disconnect the nexus 2000 from nexus 5000, will following step sequence be good:-
a. shutdown po21
b. int po21
no vpc 21
c. no int po21
I am just wondering should the po21 be shutdown first followed by removing the vpc or should it be other way around - remove the vpc under po21 and then shutdown the po21?
Please do suggest as i am new to nexus, hence making sure things are in order.
04-28-2015 05:39 PM
Hi,
As soon as you shut down po21, the FEX will go offline. After that you can disassociate the physical ports from the po21 (no channel-group 21), fex (no fex associate 21) and than delete po21 all together.
If you don't feel comfortable doing it during production, disconnect the FEX during a maintenance window.
HTH
04-27-2015 09:11 AM
As a follow up to this, we shutdown to ports that were associated as uplinks to an old fex we removed 2 years ago, we did this today and upon shutting down those two ports the switch invoked a switchport shutdown command and shutdown every single port on the 5500 is there any reason why this would of occured.
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