Users Guide

Configuring Uplink Failure Detection
To configure UFD, use the following commands.
1 Create an uplink-state group and enable the tracking of upstream links on the switch/router.
CONFIGURATION mode
uplink-state-group group-id
• group-id: values are from 1 to 16.
To delete an uplink-state group, use the no uplink-state-group group-id command.
2 Assign a port or port-channel to the uplink-state group as an upstream or downstream interface.
UPLINK-STATE-GROUP mode
{upstream | downstream} interface
For interface, enter one of the following interface types:
• 10 Gigabit Ethernet: enter tengigabitethernet {slot/port |slot/port-range}
• 40 Gigabit Ethernet: enter fortygigabitethernet {slot/port |slot/port-range}
• Port channel: enter port-channel {1-512 | port-channel-range}
Where port-range and port-channel-range specify a range of ports separated by a dash (-) and/or
individual ports/port channels in any order; for example:
upstream gigabitethernet 1/1-2,5,9,11-12
downstream port-channel 1-3,5
• A comma is required to separate each port and port-range entry.
To delete an interface from the group, use the no {upstream | downstream} interface
command.
3 Configure the number of downstream links in the uplink-state group to disable (Oper Down state) if one
upstream link in the group goes down.
UPLINK-STATE-GROUP mode
downstream disable links {number | all}
• number: specifies the number of downstream links to bring down. The range is from 1 to 1024.
• all: brings down all downstream links in the group.
The default is no downstream links are disabled when an upstream link goes down.
NOTE: Downstream interfaces in an uplink-state group are put into a Link-Down state with an UFD-
Disabled error message only when all upstream interfaces in the group go down.
To revert to the default setting, use the no downstream disable links command.
4 (Optional) Enable auto-recovery so that UFD-disabled downstream ports in the uplink-state group
come up when a disabled upstream port in the group comes back up.
UPLINK-STATE-GROUP mode
Uplink Failure Detection (UFD) 1101