Cisco Bug: CSCtd00070 - need to block same-subnet CPE-CPE connectivity when ISG is enabled
Jan 29, 2017
- Cisco IOS
Known Affected Releases
Symptoms: If "arp ignore local" is configured under "ip subscriber l2-connected" submode on an interface, ISG will no longer reply to ARPs coming to that interface if the ARPs' destination IPs are in the same subnet as the ARP source's IP, or if the ARPs' destination IP is not in the subnet of ISG but is routable from the interface where the ARP is received. Conditions: The symptom is observed if "arp ignore local" is configured under "ip subscriber l2-connected" submode.
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Bug Details Include
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