Preview Tool

Cisco Bug: CSCuq37604 - REP Topology Flaps observed when MAC-Address max limits exceeds

Last Modified

Feb 11, 2018

Products (1)

  • Cisco ASR 920 Series Aggregation Services Router

Known Affected Releases

15.4(3)S 15.5(1)S

Description (partial)

REP topology Flaps observed when MAC-Address maximum limits are exceeded

1. Configure REP close ring / Open Ring
2. Set REP-LSL-AGE-TIMER to 240 / 120
3. Pass the traffic through the REP rings & also for the other ports configured with different protocols.
4. Completely exhaust the MAC-address limits of the DUT.
5. Observe the "non-operational due to neighbor not responding", "non-operational due to neighbor mismatch"7. 6. Also observe that this issue is not happening when the Age-timer is set to 4000ms (or) 5000ms in both of this rings.
6. Also observe traffic drops during the REP flaps.
Bug details contain sensitive information and therefore require a 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.