Connectivity Guide

Table Of Contents
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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