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Cisco Bug: CSCuj98135 - N7K: FP Proxy L2 Learning breaks Proxy L3 Forwarding For Unicast Traffic

Last Modified

Jan 31, 2017

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

6.2(2a)S20 6.2(5.38)S0

Description (partial)

Symptom:
After configuring Fabricpath Proxy l2 Learning and dynamic mac entries are flushed from the mac table Proxy L3 Routing is affected. Unicast traffic sent from the supervisor or from an M Series line card towards a fabricpath core port may be dropped because the fabricpath Outer Destination Address is misprogrammed during encapsulation.

Conditions:
Nexus 7000 running NX-OS 6.2(2)a in mixed chassis VDC where M1/M2 and F2e modules are used with proxy l2 learning.
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