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Cisco Bug: CSCvv54294 - IPDT probe uses physical interface MAC as source instead of SVI MAC in 3.11.x release

Last Modified

Oct 13, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

15.2(5)

Description (partial)

Symptom:
IP Device Tracking uses physical interface MAC address as source in probes instead of SVI MAC address. The end device may respond with Destination MAC of SVI to these probes which will result in Invalid ARP error for the device.

Errors similar to following are seen.

%SW_DAI-4-INVALID_ARP: 1 Invalid ARPs (Res) on Te, vlan .([xxxx.xxxx.xxxx/x.x.x.x/xxxx.xxxx.xxxx/x.x.x.x/x:])

Conditions:
Cat4500 running 3.11.x release with IP device tracking enabled and 'ip arp inspection validate src-mac dst-mac ip' configured.
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Bug Details Include

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