[c-nsp] Prefer (outbound) certain bgp peer for AS or subnet ?

[CiscoNSP List]

Hi,

Have 2 BGP peers with upstreams(full tables from each)  on an ASR1000, and we are seeing asymmetric routing for an AS (and /24) - Customer believes this is causing performance issues.

Egress traffic to this AS + /24 is going via upstream A (As it only has 3 AS's - Upstream B has 4 AS's to this destination), but return traffic is coming in via upstream B.

What is the best method to prefer upstream B egress (For AS or  /24)?  (But still maintain redundancy if upstream B should go down)?

Cheers