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Cisco Bug: CSCuo47380 - Traffic drop in MST region with IM-OIR and SSO - reopening CSCui45075

Last Modified

Jan 28, 2017

Products (1)

  • Cisco ASR 900 Series Aggregation Services Routers

Known Affected Releases

15.3(3)S

Description (partial)

Symptom: Traffic drops in the MST region during IM-OIR followed by an SSO. When an IM is removed from the router, the MST states are not reflected in the standby RSP. If a switchover happens at this state, it could cause total traffic drop.
Conditions: This symptom is seen in HA routers. If this issue is hit, the IM that was previously removed should not be inserted back, as it could cause a traffic loop.
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