On 8/30/23 18:24, Mark Tinka wrote:
Actually, different RD's are not a solution for VRF routes leaked into
the global table. It will only work for traffic carried inside the VRF
domain.
If IOS XE can't support Add-Paths for VPN traffic, direct iBGP
sessions may be necessary to workaround this. Ouch!
So this turned out to be a known limitation as described in CSCvn41817.
Basically, IOS XE is unable to advertise capability for Add-Paths for
VPNv4 and VPNv6 AFI's.
From IOS XE 17.9.x and later, VPNv4 and VPNv6 supports the "bgp
additional-paths select" and "bgp additional-paths install" features.
However, neither "bgp additional-paths send receive" nor "advertise
additional-paths" are supported, making it a fractured and not very
useful feature.
Mark.
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