Guest

Preview Tool

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

15.2(3.7.2)

Description (partial)

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

Conditions:
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)
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.