Hello guys I have this doubt here.. when configuring Inter-AS VPN we have to build an e2e label path to get VPN traffic flow between ISPs. Most of the times we are required to exchange loopbacks labels via IPv4 eBGP sessions between ASs since LDP is not allowed.
Well... I have done this several times already on different vendor's wookbooks and that works fine just by configuring BGP send-label feature (and mpls set-label on route-maps) only on EBGP sessions. My questions is why worbook solutions always require configuring BGP label distribuition also for IBGP session? Is this just a best practice or is there any underlying issue that does not come up on workbook scenarios due to reduced topology... Thanks Andr'e
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