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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)

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

Conditions:
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.
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