Subject: [rbridge] Control plane scalability

From: jarno.rajahalme at nokia.com ([email-masked])
Date: Fri, 4 Mar 2005 09:10:34 +0200

Alex wrote:
>   An alternate approach is to run a separate instance of 
> IS-IS for each VLAN.
>   While this may give acceptable results in moderate-size 
> network with a few
>   sparsely populated VLANs, it will have scaling issues of a 
> different type in
>   mid- to large-size deployments, where core switches 
> participate in the
>   majority of VLANs. More specifically, the number of 
> individual processes
>   that would run on the control CPU would stretch the CPU resources.
> 

Isn't this an implementation/platform issue? E.g. running the different instances as threads on the same process would not cause any extra CPU overhead?

So, running separate protocol instances should not be ruled out yet.

Regards,

	Jarno Rajahalme