3Com 7757 Configuration Manual page 220

220 C 27: DLDP C
HAPTER
n
Resetting DLDP Status
n
ONFIGURATION
Table 150 DLDP configuration tasks
Operation
Force the duplex attribute
Force the speed value
Display the configuration information about the
DLDP-enabled ports
When you use the dldp enable/dldp disable command in system view to
■
enable/disable DLDP globally on all optical ports of the switch, this command is
only valid for existing optical ports on the device, however, it is not valid for
those added subsequently.
DLDP can operate normally only when the same authentication mode and
■
password are set for local and peer ports.
When the DLDP protocol works in normal mode, the system can identify only
■
one type of unidirectional links: cross-connected fibers.
When the DLDP protocol works in enhanced mode, the system can identify
■
two types of unidirectional links: the first type is the cross-connected fiber, and
the second type is one of the two fibers is not connected or fails.
When the device is busy with services and the CPU utilization is high, DLDP may
■
issue mistaken reports. You are recommended to configure the operating
mode of DLDP as manual after unidirectional links are discovered.
For the dldp interval integer command, make sure that the same interval for
■
transmitting advertisement packets is set on the ports used to connected both
devices; otherwise DLDP will not operate properly.
Only after the ports are DLDP down due to the detection of unidirectional links
can you use the dldp reset command to reset the DLDP status of these ports to
retrieve DLDP probes.
Descriptio
Command n
duplex full Required
If you want
to use
DLDP to
detect
which fiber
of the two
fibers is not
connected
or fails, you
must
configure
the ports to
work in the
mandatory
full duplex
mode.
speed speed-value Required
display dldp -
[ interface-type
interface-number ]