BGP communities

• Helps with scalability in large networks
• Group of destinations that share some common property

1. no-export
   • Do not advertise to EBGP peers
   • will go to sub-confed peers
2. no-advertise
   • Do not advertise to any peer
   • will go to next-hop only
3. internet
   • Advertise to any peer
4. none
   • Removes the community with: set community none

Always need:

 	neighbor x.x.x.x send-community
 	neighbor x.x.x.x route-map rm-set-community OUT
 	clear ip bgp *

to propagate the community

Local-as, also known as do not "export the subconfederation" will be not be advertised to the EBGP neighbors.