R2511-HP MSR Router Series Interface Command Reference(V5)

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link-delay
Use link-delay to set the physical state change suppression interval on an Ethernet interface.
Use undo link-delay to restore the default.
Syntax
link-delay delay-time
undo link-delay
Default
By default, an Ethernet interface detects the physical state change every 5 seconds. When a physical
state change occurs, the Ethernet interface can detect the change within 0 to 5 seconds.
Views
Ethernet interface view
Default command level
2: System level
Parameters
delay-time: Sets the physical state change suppression interval in seconds. This argument is 0 or uses the
default setting for Ethernet interfaces. The value 0 means not to suppress the physical state change and
enables the router to promptly detect physical state change on the Ethernet interface.
Usage guidelines
The following matrix shows the command and router compatibility:
Command MSR900 MSR93X MSR20-1X MSR20 MSR30 MSR50 MSR1000
link-delay No
Available
only on
Layer 3 GE
interfaces
No No
Available
only on
Layer 3 GE
interfaces
Available
only on
Layer 3 GE
interfaces
No
This command does not apply to ports administratively shut down (with the shutdown command).
Examples
# Set the physical state change suppression interval to 0 seconds on GigabitEthernet 0/1, so that the
router can promptly detect physical state change on GigabitEthernet 0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 0/1
[Sysname-GigabitEthernet0/1] link-delay 0
loopback
Use loopback to enable loopback testing on an Ethernet interface.
Use undo loopback to disable loopback testing on an Ethernet interface.
Syntax
loopback { external | internal }
undo loopback