Cisco Bug: CSCtd25882 - Dot1q vlan subinterface forwarding ip frames in promiscuous mode
Feb 02, 2017
- Cisco IOS
Known Affected Releases
Symptom: Heavy traffic load due to ping pong of packets (with decrementing ttl) between router configured for dlsw transparent. This will only appear on the native vlan. Conditions: Dlsw transparent configured on router pair, with sub-interfaces and IP connectivity on the native vlan and a steady stream of unanswered IP packets (eg: a unicast UDP stream).
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