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Cisco Bug: CSCum61205 - EoMPLS Misprogrammed in OTV Route Forwarding

Last Modified

Nov 27, 2020

Products (7)

  • CiscoPro Workgroup EtherSwitch Software
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch

Known Affected Releases


Description (partial)

All broadcast and link local multicast is lost across the OTV circuit.

ARP Cannot be completed across OTV
HSRP peers go active/active as their hellos use link local multicast

This occurs during packet OTV packet decapsulation due to a missing label in hardware.

This issue occurs under the following sequence of events:

1) Overlay is up and extending at least one vlan
2) Configure "layer-2 multicast lookup mac" under one of the extended vlans
3) Bounce the Overlay (any event that causes the overlay to go down such as a join interface failure, internal interface failure, manual shut/no shut, etc...)
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Bug Details Include

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