BGP Sessions on router

[DavideRanalli76560]

Hi all, I am wandering, if the worry is having to many BGP Sessions on Router A, is there are any difference between the following 2 scenarios? If there are no differences, is there a BGP feature that helps overcoming this problem?

Scenario 1:

Scenario 2:

 

 Thanks in advance for any help

Davide

[MHM Cisco World]

Vpnv4 is better 

config one bgp between routers and inject vrf route 

[balaji.bandi]

If the peers are many suggested to use RR ( Route Reflector) for redundancy. with BGP vpnv4

example : vpnv4

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16/irg-xe-16-book/bgp-vrf-aware-conditional-advertisement.html

[DavideRanalli76560]

Thanks, the fact is that routers B,C,D will have eBGP sessions with router A, that's why I was wondering if there are any similar features like Route Reflector to use for eBGP.

Many thanks

David 

[balaji.bandi]

Router A  is your control, you can also look templates.

[Georg Pauwen · Accepted solution]

Hello,

since these are all eBGP session, the only thing I could think of are peer groups. Route Reflectors and Confederations won't help (and work), since there is no need for a full mesh in eBGP.

https://networklessons.com/bgp/bgp-peer-groups-on-cisco-ios

[DavideRanalli76560]

Many thanks Georg, very helpful 

Davide