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Cisco Bug: CSCvs91658 - 4500X does not process unicast GRE traffic when inbound DMAC is an HSRP address

Last Modified

May 18, 2020

Products (1)

  • Cisco Catalyst 4500 Series Switches

Known Affected Releases


Description (partial)

Cannot pass unicast traffic between endpoints of a GRE tunnel.  Underlay works.

4500X terminating a GRE tunnel
Layer 2 ingress to switch
DMAC of incoming packets is an HSRP virtual address on the VLAN SVI(switch is Active for the group)
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