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Community Member

Nexus 5500 routing issue

Hi All,

we have 2 x 5548 running vPC and each have SINGLE uplink to 6500 forming a spare topology.  This is running OSPF and BGP on top to connect to a WAN. WAN router connects to Nexuses.

When Nexus 1 receives traffic from WAN router destined to a BGP prefix, instead forwarding traffic to a 6500 as shown Nexus 1'  routing table and show forwarding route A.B.C.D , it forwards to Nexus 2 over vPC. We have a vlan on vPC to run OSPF. It only happens to BGP prefix, not OSPF  learned prefix.

Does anyone have any idea?

Thanks

Tao

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