Brocade Multi-Service IronWare Switching Configuration Gui Manual de usuario Pagina 939

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Multi-Service IronWare Switching Configuration Guide 909
53-1003036-02
Displaying UDLD information
24
UDLD for tagged ports
The default implementation of UDLD sends the packets untagged, even across tagged ports. If the
untagged UDLD packet is received by a third-party switch, that switch may reject the packet. As a
result, UDLD may be limited only to Brocade devices, since UDLD may not function on third-party
switches.
Beginning with Multi-Service IronWare release 04.1.00, you can configure ports to send out UDLD
control packets that are tagged with a specific VLAN ID as tagged UDLD control packets. The
enhancement also allows third party switches to receive the control packets that are tagged with
the specified VLAN.
To allow ports to receive and send UDLD control packets tagged with a specific VLAN ID, enter
commands such as the following:
Brocade(config)# link-keepalive ethernet 1/18 vlan 22
This commands enables UDLD on port 1/18 and allows UDLD control packet tagged with VLAN 22
to be received and sent on port 1/18.
Syntax: [no] link-keepalive ethernet portnum [vlan vlan-ID]
Enter the slot number (if applicable) and the port number of the Ethernet port.Enter the ID of the
VLAN that the UDLD control packets can contain to be received and sent on the port. If a VLAN ID is
not specified, then UDLD control packets are sent out of the port as untagged packets.
NOTE
You must configure the same VLANs that will be used for UDLD on all devices across the network;
otherwise, the UDLD link cannot be maintained.
Displaying UDLD information
Displaying information for all ports
.In the following example, port 1/1 is tagged in VLAN 2 and is configured for tagged UDLD. Port 1/2
is not configured for tagged UDLD:
Syntax: show link-keepalive [ethernet slot/portnum]
TABLE 121 CLI display of UDLD information
This field... Displays...
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.
Brocade#show link-keepalive
Total link-keepalive enabled ports: 2
Keepalive Retries: 5 Keepalive Interval: 5 * 100 MilliSec.
Port Physical Link Link-keepalive Logical link Link-vlan
1/1 down down down 2
1/2 down down down
Brocade#
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