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Cisco Bug: CSCtb70584 - BPDUs leaking onto backup TE-FRR tunnel for MSToEVC special PW

Last Modified

Jan 31, 2017

Products (1)

  • Cisco 7600 Series Routers

Known Affected Releases


Description (partial)

Symptoms: With MSToEVC and N-PE redundancy enabled between two Cisco 7600
 series routers in a ring topology, the assigned root Cisco 7600 series router
 blocks its connection to the other router due to a dispute state.
 Conditions: This issue is seen in a ring topology with MSToEVC and N-PE
 redundancy between two nodes. It occurs when there are valid active and backup
 MPLS-TE tunnels between the nodes. BPDUs travel across both tunnels (even
 though they should only traverse the primary) and cause the dispute state.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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