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Cisco Bug: CSCuo18934 - Intermittent multicast packet loss on 3.2.7 after ISSU from 3.2.3

Last Modified

Feb 15, 2018

Products (1)

  • Cisco Catalyst 4500 Series Switches

Known Affected Releases

15.1(2)SG3.0.1

Description (partial)

Symptom:
After upgrading to Cisco IOS 3.2.7SG and given more than 1024 active groups, both supervisor engines experience intermittent multicast packet loss and the number of S, Gs drop continuously.

Conditions:
This happens after performing an ISSU from Cisco IOS Release 3.2.3 to 3.2.7, and more than 1024 groups are active.
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