H3C S5120-EI Series User Manual

1-9
z To ensure unidirectional links can be detected, make sure these settings are the same on the both
sides: DLDP state (enabled/disabled), the interval for sending Advertisement packets,
authentication mode, and password.
z Keep the interval for sending Advertisement packets adequate to enable unidirectional links to be
detected in time. If the interval is too long, unidirectional links cannot be terminated in time; if the
interval is too short, network traffic may increase in vain.
z DLDP does not process any link aggregation control protocol (LACP) events. The links in an
aggregation group are treated individually in DLDP.
z When connecting two DLDP-enabled devices, make sure the DLDP software version ID fields of
the DLDP packets exchanged between the two devices are the same. Otherwise, DLDP may
operate improperly.
Enabling DLDP
Follow these steps to enable DLDP:
To do… Use the command… Remarks
Enter system view
system-view
—
Enable DLDP globally
dldp enable
Required
Globally disabled by default
Enter
Ethernet
port view
interface interface-type
interface-number
Enter
Ethernet
port view
or port
group
view
Enter port
group
view
port-group manual
port-group-name
Either of the two is required.
The configuration performed in Ethernet port
view applies to the current port only. The
configuration performed in port group view
applies to all the ports in the port group.
Enable DLDP
dldp enable
Required
Disabled on a port by default
You can perform this operation on an optical
port or an electrical port.
DLDP takes effect only when it is enabled both globally and on a port.
Setting DLDP Mode
Follow these steps to set DLDP mode:
To do… Use the command… Remarks
Enter system view
system-view
—
Set DLDP mode
dldp work-mode { enhance |
normal }
Optional
Normal by default

H3C S5120-EI Series Specifications

General

Brand	H3C
Model	S5120-EI Series
Category	Switch
Language	English