Hi,
I have a questions regarding eiBGP Multipath. 2 iBGP speakers (R1 and R2), peering to the same PE via eBGP. Subnet behind PE is propagated to both R1 and R2, and R1 and R2 propagates that same subnet to each other. Routes are already installed in BGP.
eiBGP Multipath has yet been enabled.
If traffic originates from, or ingresses (from inside to outside) R1, coming to subnet behind PE, how does the iBGP peer (R2) know to NOT forward the traffic back to R1, in case eiBGP Multipath is enabled?
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