show link-keepalive

Displays the UDLD information.
Syntax
show link-keepalive [ ethernet stackid/slot/port ]
Parameters
ethernet stackid/slot/port
Displays UDLD information for the specified Ethernet port.
Modes

User EXEC mode

Privileged EXEC mode

Global configuration mode

The show link-keepalive command displays the following information:

Output field Description
Total link-keepalive enabled ports The total number of ports on which UDLD is enabled.
Keepalive Retries The number of times a port will attempt the health-check before concluding that the link is down.
Keepalive Interval The number of seconds between health check packets.
Port The port number.
Physical Link The state of the physical link. This is the link between the RUCKUS port and the directly connected device.
Logical Link The state of the logical link. This is the state of the link between this port and the port on the other end of the link.
State The traffic state of the port.
Link-vlan The ID of the tagged VLAN in the UDLD packet.

The show link-keepalive ethernet command displays the following information:

Output field Description
Current State The state of the logical link. This is the link between this port and the 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 device.
Remote Port The port number on the device at the remote end of the link.
Local System ID A unique value that identifies this device. The ID can be used by RUCKUS technical support for troubleshooting.
Remote System ID A unique value that identifies the 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 RUCKUS technical support for troubleshooting.
Link-vlan The ID of the tagged VLAN in the UDLD packet.
BM disabled Information used by RUCKUS technical support for troubleshooting.
Examples

The following example shows the UDLD information for all ports. 

device# show link-keepalive
Total link-keepalive enabled ports: 4
Keepalive Retries: 3    Keepalive Interval: 1 Sec.
Port    Physical Link   Logical Link    State           Link-vlan
1/1/1     up              up            FORWARDING      3
1/1/2     up              up            FORWARDING
1/1/3     down            down          DISABLED
1/1/4     up              down          DISABLED

The following example show the UDLD information for a specific port. 

device# show link-keepalive ethernet 1/4/1
Current State   : up            Remote MAC Addr  : 0000.00d2.5100
Local Port      : 1/4/1         Remote Port      : 1/2/1
Local System ID : e0927400      Remote System ID : e0d25100
Packets sent    : 254           Packets received : 255
Transitions     : 1             Link-vlan        : 100
Parent topic: Show Commands