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Question about adding Network to BGP

If I add the following to

router bgp 65004

adding this>>> network 10.1.23.0 mask 255.255.255.0

Will it cause any notwork disruption or cause BGP to re-converge?

Mike

1 ACCEPTED SOLUTION

Accepted Solutions
Silver

Re: Question about adding Network to BGP

It shouldn't cause your BGP sessions to reestablish or reconverge.  It should only cause BGP to begin announcing 10.1.23.0/24 to BGP peers as long as this route is in your route-table learned from an IGP or as a connected or static route.  'show ip bgp' will reveal if it's in the bgp table.



Chris

4 REPLIES
Silver

Re: Question about adding Network to BGP

It shouldn't cause your BGP sessions to reestablish or reconverge.  It should only cause BGP to begin announcing 10.1.23.0/24 to BGP peers as long as this route is in your route-table learned from an IGP or as a connected or static route.  'show ip bgp' will reveal if it's in the bgp table.



Chris

Re: Question about adding Network to BGP

It is not in the BGP table. I will also be adding the following..... ip route 10.1.23.0 255.255.255.0 GigabitEthernet0/0

Mike

Silver

Re: Question about adding Network to BGP

You'll be good to go then.  Once the static route and the BGP network statement are in you can do a 'soft' reset to propagate the route quicker; or just wait.


clear ip bgp * soft


This wont cause any service disruption.  confirm the route is in the route-table, then confirm it's in the BGP table.  In order to confirm it's getting to a particular BGP peer use the following:


show ip bgp neighbors x.x.x.x advertised-routes


Chris

Re: Question about adding Network to BGP

Thanks for your help. Thought it would be fine but I don't do that much with routing and I wanted to be sure.

Mike

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