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Cisco Bug: CSCus93049 - CLI "switchport block unicast" is ineffective on certain scenario's

Last Modified

Feb 15, 2018

Products (1)

  • Cisco Nexus 3000 Series Switches

Known Affected Releases

6.0(2)U3(2.68) 6.0(2)U3(5.94)

Description (partial)

Symptom:
The 'switchport block unicast' and 'switchport block multicast' CLIs are not effective when they are configured with multiple port-channels.

Conditions:
There should be multiple port-channels configured with either 'switchport block unicast'/'switchport block multicast'. Let's assume switch has 2 port-channels. Bringup of 2nd port-channel will impact 'block unicast' / 'block multicast' hardware programming of 1st port-channel.
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