VSS and VSL

[nguessankmatt]

Hi,
In our infrastructure we have implemented VSS virtualization from two nexus 6500 switches.
the VSS confection was well done.
However, one of the etherchanel ports of the VSL gives discards error.
The goal is to find out if it is possible to replace a hot VSL Etherchannel link without reconfiguring the VSS or restarting the switches.

[Mark Malone]

Hi
once 1 link is still up in the PO you can swap out the other without any hit , do you have them in a portchannel combination ?

[nguessankmatt]

Thanks,

Yes, we have them in a portchannel combination

[Reza Sharifi]

If this is a physical issue, you should be able to replace the cable and/or optic and the link should come up since the config already exists on the ports. There should be no need for anything else.

HTH

[nguessankmatt]

We want to configure a new Etherchannel link, with two new 10gig ports and replace the one that poses problem

[Reza Sharifi]

Why would want to configure a new Etherchannel if you already have an existing one that is working? Are the existing physical links 10Gig?  If so, you just replace the cable or optic on the port that is not working. Am I understanding this correctly or completely offbase?

HTH 

[nguessankmatt]

We want to take two new 10gig ports and build a new Etherchannel link.
In fact, we had at the beginning of two ports 10gig (on each switch nexus) which allowed us to have a VSL of 20gig. unfortunately, a problem at a port led us to disable it. we left a link VSL Etherchannel of 10gb.

[Reza Sharifi]

"on each switch nexus" Nexus does not support VSS/VSL. They only support vPC which is a different animal.

In your first post, you said 6500. Can you clarify?

HTH

[nguessankmatt]

okay. I would explain my problem differently.
Suppose we have two CISCO 6500 Catalyst Switches.
and its two devices have been configured in vss.
During VSL link configuration, a 10gig port on each Switch was used.

SW1 (config) #interface port-channel 1
SW1 (config-if) #no shutdown
SW1 (config-if) #switch virtual link 1
SW1 (config-if) #exit
SW1 (config) #int ten 1/4
SW1 (config-if-range) # channel-group 1 mode on
SW1 (config-if-range) #no shut

SW2 (config) #interface port-channel 2
SW2 (config-if) #no shutdown
SW2 (config-if) #switch virtual link 2
SW2 (config-if) #exit
SW2 (config) #int ten 1/4
SW2 (config-if-range) # channel-group 2 mode on
SW2 (config-if-range) #no shutdown

SW1 # switch convert mode virtual

This command will convert all interface names
to naming convention "interface-type switch-number / slot / port",
save the running config to startup-config
reload the switch.

NOTE: Make sure to configure one or more dual-active detection methods
The conversion is complete and the switches have come up in VSS mode.

Do you want to proceed? [yes / no]: yes
Converting interface names
Building configuration ...
SW2 # switch convert mode virtual

This command will convert all interface names
to naming convention "interface-type switch-number / slot / port",
save the running config to startup-config
reload the switch.

NOTE: Make sure to configure one or more dual-active detection methods
The conversion is complete and the switches have come up in VSS mode.

Do you want to proceed? [yes / no]: yes
Converting interface names
Building configuration ...

After the last step of Converting Switch to Virtual Switch mode (SW1 # switch convert virtual mode and SW2 # switch convert mode virtual) our vss works well.

However, for the sake of having a redundancy we want to integrate two other ports (one more Etherchanel link in the existing link, int te1 / 1/1 and int te2 / 1/1).
  
  Is it possible to integrate these new ports without reconfiguring the VSS or without restarting the switches.

Thank you and forgiveness for the length of my post

[Mark Malone · Accepted solution]

But redundancy is already in place as there is 2 VSL links 1 and 2 but if you really want to its the same as adding another link in any PO should be no impact

see Rahuls response once 1 link is left in place your fine
https://community.cisco.com/t5/switching/vss-6500-adding-a-vsl-link/td-p/1307282

[Mark Malone]

Then your fine to replace 1 , once 1 is still up the VSL will stay formed