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PowerConnect B-Series FCX Configuration Guide 387
53-1002266-01
UDLD overview
11
If a port is disabled by UDLD, the change also is indicated in the output of the show interfaces brief
command. An example is given below.
If the port was already down before you enabled UDLD for the port, the port state is listed as None.
Syntax: show interfaces brief
Displaying information for a single port
To display detailed UDLD information for a specific port, enter a command such as the following.
Syntax: show link-keepalive [ethernet [<slotnum>/]<portnum>]
TABLE 68 CLI display of detailed UDLD information
This field... Displays...
Current State The state of the logical link. This is the link between this Dell PowerConnect port and the
Dell PowerConnect port on the other end of the link.
Remote MAC Addr The MAC address of the port or device at the remote end of the logical link.
Local Port The port number on this Dell PowerConnect device.
Remote Port The port number on the Dell PowerConnect device at the remote end of the link.
Local System ID A unique value that identifies this Dell PowerConnect device. The ID can be used by Dell
technical support for troubleshooting.
Remote System ID A unique value that identifies the Dell PowerConnect device at the remote end of the link.
Packets sent The number of UDLD health-check packets sent on this port.
Packets received The number of UDLD health-check packets received on this port.
Transitions The number of times the logical link state has changed between up and down.
Port blocking Information used by Dell technical support for troubleshooting.
Link-vlan The ID of the tagged VLAN in the UDLD packet.
BM disabled Information used by Dell technical support for troubleshooting.
PowerConnect#show interfaces brief
Port Link State Dupl Speed Trunk Tag Priori MAC Name
1/1 Up LK-DISABLE None None None No level0 00e0.52a9.bb00
1/2 Down None None None None No level0 00e0.52a9.bb01
1/3 Down None None None None No level0 00e0.52a9.bb02
1/4 Down None None None None No level0 00e0.52a9.bb03
PowerConnect#show link-keepalive ethernet 4/1
Current State : up Remote MAC Addr : 00e0.52d2.5100
Local Port : 4/1 Remote Port : 2/1
Local System ID : e0927400 Remote System ID : e0d25100
Packets sent : 254 Packets received : 255
Transitions : 1 Link-vlan : 100
Port blocking : No BM disabled : No