Anyone know how to exchange BGP routes from Extreme switch to Cisco Nexus?

[Andrew White]

Hello,

I will have to connect our Nexus Switch to an Extreme switch soon. The Extreme switch will be managed by another company and they will want to share their routes to the Cisco Nexus using BGP.

I have created a lab in GNS3 with a Nexus and Extreme switch set a port on the Cisco with an IP (no switchport) on 172.28.100.1/30, but how can I make a port on the Extreme 172.28.100.2/30 then add a loopback IP off 1.1.1.1/32 and advertise it to the Cisco switch using BGP (AS6500)?  Just to see how it all works.  I've done BGP on routers before, but not a Nexus to Extreme.

On the Cisco Nexus I have done:

router bgp 65000

 no synchronization

 bgp log-neighbor-changes

 neighbor 172.28.100.2 remote-as 65000

 no auto-summary

Thanks

[Giuseppe Larosa]

Hello Andrew,

first of all, if you use BGP with another company you will use eBGP not iBGP.

so you can use AS number 65000 your peer can use a different AS like 65001

The Nexus config will be:

router bgp 65000

no synchronization

bgp log-neighbor-changes

neighbor 172.28.100.2 remote-as 65001

no auto-summary

+

network commands for prefixes to be advertised.

BGP will require exact match of network mask and the prefixes have to be in IP route table by any means.

For the Extreme switch side read the following thread

https://community.extremenetworks.com/extremeswitching-exos-223284/is-there-any-doc-to-configure-bgp-7050209

Hope to help

Giuseppe