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Cisco Bug: CSCul50781 - ISSU from 6.1.3 to 6.1.4/ 6.2.2a on vpc+primary leaf node, traffic loss

Last Modified

Feb 01, 2017

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

6.1(4)S26

Description (partial)

Symptom:
intervlan traffic loss during ISSU on vpc+ primary switch. The switch is also  a leaf node and L2/L3 boundary. We see the traffic loss always happens after module 2 is finished upgrade. Both module 1 and module 2 are the FabricPath ports.

Conditions:
ISSU from 6.1.3 to 6.1.4 or 6.2.2a
primary vpc+ switch
FabricPath leaf node
L2/L3 boundary - SVI and HSRP enabled
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