Quick Scenario -2 – Bgp Communities – (no-advertise)
Aug 11
Uncategorized bgp, ccie, ccna, ccnp, cisco, jncie, jncip, jncis, juniper, ldp, mpls, no-advertise, ospf, rsvp No Comments
Hi,
2nd post in the quick series is about BGP community no-advertise
Community – No-Advertise
“No-Advertise is similar to No-export, While no-export does not export routes to another AS, this goes further and it will not export route to both ebgp or ibgp neighbors as well.”
Requirement – Make sure R1 advertises its routes to R2, and R2 should not advertise the routes to either EBGP or IBGP neighbors
Topology
Before confiuring anything
ON R1
access-list 99 permit host 1.1.1.1
route-map NO-ADV-COMM permit 10
match ip address 99
set community no-advertise
router bgp 100
nei 9.9.12.2 route-map NO-ADV-COMM out
Regards
Rakesh