The purpose of BGP cost community

[Sam-CCNP]

Hi,

I'm confused as to the reason for the existence of the BGP Cost community.

Surely what it does can be achieved by using path attributes. E.g. weight, if you only want to influence a single router, or local preference if you want to affect the entire AS.

I just do not understand in what scenarios you would want to use it when other options are available.

Thanks in advance for the help.

Sam

[kailandrew60]

The BGP Cost community is used for simplifying routing policy by assigning a cost to routes that can be evaluated across multiple routers consistently, especially in large-scale networks. Unlike weight (local) or local-pref (intra-AS), Cost communities allow centralized control and flexibility without rewriting policies on every router. Milwin

[MHM Cisco World]

@Sam-CCNP I will run lab and show you the effect of this community.

MHM

[MHM Cisco World]

@Sam-CCNP are you still interest to see lab ?

please asnwer within two days 

MHM