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Cisco Bug: CSCta53466 - ISSU on Sup4 causes IPV6 mcast traffic loss to Rcv in Standby uplink

Last Modified

Feb 02, 2017

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases


Description (partial)

Performing ISSU on Sup720 -10G box causes IPv6 mcast traffic loss to Receivers connected to Standby Uplink.

1. Supervisor uplinks must be used in forwarding IPV6 multicast traffic
2. During ISSU upgrade cycle from SXI or SXI1 to SXI2, the issue is seen in Loadversion and Runversion
3. During ISSU downgrade from SXI2 to SXI or SXI1, the issue is seen in Loadversion and Runversion
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