cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
368
Views
4
Helpful
1
Replies

QoS for Routing Protocols on Transit L2 Switch

dukenuk96
Participant
Participant

Hi all!

I have following simple network:

So my router connects to several ISPs using BGP. L2 transit switch is being used to aggregate all ISP's links. The question is - do I need to configure QoS on this transit switch to define separate queues for routing protocol traffic (BGP for example) so that user traffic would not affect neighbor relationships and routing updates? I have read many materials about QoS and there is written "Network control protocols such as STP, BGP, OSPF and so on traffic directed to CPU is handled by QoS engine on switches and routers automatically and this behavior can not be modified". Ok, I see, but what about this case - when routing protocol traffic is not directed to switch's CPU and actually a transit traffic?

1 Reply 1

Collin Clark
VIP Alumni
VIP Alumni

You should configure QoS for the transit traffic. The quick and dirty way would be to just enable QoS. The routing protocol packets are automatically tagged so there really isn't much for configuration. You could of course create an elaborate QoS scheme, ensure proper marking, etc, but just enabling QoS will more than likely get you what you need. 

HTH

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: