I wonder if there is a way to manipulate the BGP as_path or make BGP process ignore same AS values/numbers in the as_path.
Problem: 2 VPNs in the same MPLS Backbone. I interconect them (on the CE side of the VPNs) with the e-BGP (have FW in between the CEs) and the same AS numbers of on VPN pop up again in the other VPN but the same MPLS (same BGP AS).
I need to ignore them somehow on the PE routers or better remove/suppress them.
If you use 'bgp bestpath as-path ignore' command, it will skip this step during best path selection. Also you can use 'neighbor as-override' command to override a site's AS. In addition to these commands, you can use allow as-in option to override loop checking mechanism that use as-path atributes. This allows taking NLRIs into BGP table that consist own ASN.
I see 'bgp bestpath as-path ignore' and 'allow as-in' as the solutions however found no proper documentation to find out more about the commands (only command refs, which is not enough). I imply need to know wethere these commands would wokr in the MPLS network on the PE routers at BGP VPNv4 VRF level and what IOS-es and router platforms support them.
Would be good to have more info + experience comments
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...