Cisco Bug: CSCsg35506 - JQL: port-channel member in suspend due to flowcontrol mismatch .
Jan 28, 2017
- Cisco Catalyst 6000 Series Switches
Known Affected Releases
Symptoms: After a Gigabit Ethernet (GE) interface has flapped, a mismatch may occur on a port channel, preventing the GE interface from joining the port channel. This situation occurs when the default flow control operational mode on the GE interface is unexpectedly changed from "off/off" to "on" after the GE interface has flapped. If the symptom occurs for the first interface of a group of interfaces that is supposed to join the port channel, none of the interfaces in the group can join the port channel, degrading the bandwidth and possibly causing severe packet drops on the channel. Conditions: This symptom is observed on a Cisco Catalyst 6000 series switch and Cisco 7600 series router, and affects the following modules: - Supervisor Engines 1 and 1a - Supervisor Engine 2 - WS-X6408-GBIC - WS-X6416-GBIC - WS-X6516-GBIC and WS-X6516A-GBIC Note that the symptom does not occur with the WS-X6724-SFP and the WS-X6748-GE-TX.
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