Cisco Bug: CSCta24404 - ISSU to 4.2(1) may result in port-channel packet forwarding issues
Jan 30, 2017
- Cisco Nexus 7000 Series Switches
Known Affected Releases
Symptom: ISSU from a lower version into 4.2(1) image may result in issues regarding packet forwarding on port channels. A software inconsistency defect may result in the following symptoms: Upon module reload or port-channel member flaps: - the Egress VSL bit can get incorrectly programmed, resulting in loops. - the vlan membership in ELTM can be incorrect, resulting in the vlans not enabled on certain port-channels - resulting in packet drops. Conditions: ISSU from a lower version into 4.2(1) image is a necessary condition for this problem. The underlying issues may not show up right after ISSU. It may show up only after some ports flap, or modules get reloaded.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.
Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
- Related Community Discussions
- Number of Related Support Cases