Cisco Bug: CSCtb70584 - BPDUs leaking onto backup TE-FRR tunnel for MSToEVC special PW
Jan 31, 2017
- Cisco 7600 Series Routers
Known Affected Releases
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
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