Uplink Failure Detection (UFD) | 613
Configuring Uplink Failure Detection
To configure Uplink Failure Detection, follow these steps: 
Step Command Syntax and Mode Description
1 uplink-state-group group-id 
Command Mode: CONFIGURATION
Creates an uplink-state group and enabling the tracking of 
upstream links on the switch/router. 
Valid group-id values are 1 to 16. 
To delete an uplink-state group, enter the no uplink-state-group 
group-id command.
2 {upstream | downstream} interface
Command Mode: 
UPLINK-STATE-GROUP
Assigns a port or port-channel to the uplink-state group as an 
upstream or downstream interface.
For interface, enter one of the following interface types: 
10-Gigabit Ethernet: tengigabitethernet {slot/port |slot/
port-range}
40-Gigabit Ethernet: 
fortygigabitethernet {slot/port |slot/port-range}
Port channel: 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 tengigabitethernet 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, enter the no {upstream | 
downstream} interface command.
3
downstream disable links 
{
number | all} 
Command Mode: 
UPLINK-STATE-GROUP
(Optional) Configures the number of downstream links in the 
uplink-state group that will be disabled (Oper Down state) if one 
upstream link in the group goes down.
number specifies the number of downstream links to be brought 
down. Range: 1 to 1024.
all brings down all downstream links in the group.
Default: No downstream links are disabled when an upstream link 
goes down. 
To revert to the default setting, enter the no downstream 
disable links
 command.
4
downstream auto-recover
Command Mode: 
UPLINK-STATE-GROUP
(Optional) Enables 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.
Default: Auto-recovery of UFD-disabled downstream ports is 
enabled. 
To disable auto-recovery, enter the no downstream 
auto-recover
 command.