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Cisco Bug: CSCur20696 - N3100: Unexpected Link-Local Multicast on SPAN Destination

Last Modified

Jul 14, 2016

Products (1)

  • Cisco Nexus 3000 Series Switches

Known Affected Releases

6.0(2)U2(4.92)

Description (partial)

Symptom:
When running a SPAN session to mirror TX or both RX and TX traffic from a source access port in non-routed vlan to a destination access port in non-routed Vlan, you might be seeing link-local multicast (ex. HSRP, IGMP Hellos messages) traffic from sourced from a different vlan on the neighboring N3K vpc peer switch.

Conditions:
Running a SPAN session to mirror TX or both RX and TX traffic.
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