Configuring The Udld Mode - Cisco 7206 - VXR Router Configuration Manual

Chapter 2 Configuring Basic Interface Parameters
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m

Configuring the UDLD Mode

You can configure normal or aggressive unidirectional link detection (UDLD) modes for Ethernet
interfaces on devices configured to run UDLD. Before you can enable a UDLD mode for an interface,
you must make sure that UDLD is already enabled on the device that includes the interface. UDLD must
also be enabled on the other linked interface and its device.
Table 2-7
Table 2-7
Description
Default setting
Enable UDLD command
Disable UDLD command
To use the normal UDLD mode, you must configure one of the ports for normal mode and configure the
other port for the normal or aggressive mode. To use the aggressive UDLD mode, you must configure
both ports for the aggressive mode.
By default, UDLD is disabled for the 48-port, 10/100/1000 Ethernet module ports but the normal UDLD
mode is enabled for the 32-port, 10-Gigabit Ethernet module ports.
BEFORE YOU BEGIN
You must enable UDLD for the other linked port and its device.
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
7.
8.
9.
OL-23435-03
lists CLI details to enable and disable UDLD on different interfaces.
CLI Details to Enable or Disable UDLD on Different Interfaces
configure terminal
feature udld
no feature udld
udld message-time seconds
udld aggressive
interface ethernet slot/port
udld {enable | disable}
show udld [ethernet slot/port | global | neighbors}
exit
copy running-config startup-config
Fiber port
Enabled
no udld disable
udld disable
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
Configuring the Basic Interface Parameters
Copper or Non-fiber port
Disabled
udld enable
no udld enable
2-39