Connectivity Guide

Congure uplink failure detection
Consider the following before conguring an uplink-state group:
• You can assign a physical port or a port channel to an uplink-state group.
• You can assign an interface to only one uplink-state group at a time.
• You can designate the uplink-state group as either an upstream or downstream interface, but not both.
• You can congure multiple uplink-state groups and operate them concurrently.
• You cannot assign both a port channel and its members to an uplink-state group, which would make the group inactive. The port
channels and individual ports that are not part of any port channel can coexist as members of an uplink-state group.
• If one of the upstream interfaces in an uplink-state group goes down, you can set the downstream ports in an operationally down state
with an UFD Disabled error status. You can congure the system to disable either a user-congurable set of downstream ports or all
the downstream ports in the group.
• The downstream ports are disabled in order starting from the lowest numbered port to the highest numbered port.
• When an upstream interface in an uplink-state group that was down comes up, the set of UFD-disabled downstream ports that were
down due to that particular upstream interface are brought up, and the UFD Disabled error clears in those downstream ports.
• If you disable an uplink-state group, the downstream interfaces are not disabled, regardless of the state of the upstream interfaces.
Uplink Failure Detection
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