Campus Switching and Routing

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Super Contributor II

Using VSF, does the standby also route traffic?

I understand the commander is in charge of routing protocols, building IP and MAC tables. But are both allowed to route traffic? The guide says that the standby still forwards traffic. But I can't find an absolute (standby never routes traffic). I assume this is what it means when it says only the commander is in charge of routing protocols. But I didn't know if the commander could give the standby the info it needs for the standby to route traffic itself.

 

Let me know if you can. Thanks Airheads!!

Sean Rynearson
Contributor II

Re: Using VSF, does the standby also route traffic?

What I understand is Standby do not have its own control plane and receive relavent information from commander. This way both have FIBs in sync.

If a commander receives a packet whose egress port is on standby, the packet will traverse through VSF link nad will exit through egress port on standby switch.

 

If standby receives a packet with egress port also on standby switch, it will directly route that through its own egress interface (by looking at the FIB it populated through commander).

 

So the short answer is it Standby does route traffic based on the information is receives from Commander.

JayBee
ACDX | CCIE (RnS/SP,DC) | ACCP | ACMP | ACMA | JNCIS | JNCIA
If the provided solution resolves your issue, please mark it as accepted solution to help others.
Super Contributor II

Re: Using VSF, does the standby also route traffic?

Thanks Jay :-)

Sean Rynearson
Contributor II

Re: Using VSF, does the standby also route traffic?

Glad I was able to help :)..

JayBee
ACDX | CCIE (RnS/SP,DC) | ACCP | ACMP | ACMA | JNCIS | JNCIA
If the provided solution resolves your issue, please mark it as accepted solution to help others.
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