3Com 4500G Family Configuration Manual page 859

Configuration procedure
1) Configuration on Device A
# Enable DLDP globally and then on GigabitEthernet1/0/50 and GigabitEthernet 1/0/51 respectively.
<DeviceA> system-view
[DeviceA] dldp enable
[DeviceA] interface gigabitethernet 1/0/50
[DeviceA-GigabitEthernet1/0/50] dldp enable
[DeviceA-GigabitEthernet1/0/50] quit
[DeviceA] interface gigabitethernet 1/0/51
[DeviceA-GigabitEthernet1/0/51] dldp enable
[DeviceA-GigabitEthernet1/0/51] quit
# Set the interval for sending Advertisement packets to 6 seconds.
[DeviceA] dldp interval 6
# Set the DelayDown timer to 2 seconds.
[DeviceA] dldp delaydown-timer 2
# Set the DLDP mode to enhanced mode.
[DeviceA] dldp work-mode enhance
# Set the port shutdown mode to auto mode.
[DeviceA] dldp unidirectional-shutdown auto
2) Configuration on Device B
# Enable DLDP globally and then on GigabitEthernet1/0/50 and GigabitEthernet 1/0/51 respectively.
<DeviceB> system-view
[DeviceB] dldp enable
[DeviceB] interface gigabitethernet 1/0/50
[DeviceB-GigabitEthernet1/0/50] dldp enable
[DeviceB-GigabitEthernet1/0/50] quit
[DeviceB] interface gigabitethernet 1/0/51
[DeviceB-GigabitEthernet1/0/51] dldp enable
[DeviceB-GigabitEthernet1/0/51] quit
# Set the interval for sending Advertisement packets to 6 seconds.
[DeviceB] dldp interval 6
# Set the DelayDown timer to 2 seconds.
[DeviceB] dldp delaydown-timer 2
# Set the DLDP mode to enhanced mode.
[DeviceB] dldp work-mode enhance
# Set the port shutdown mode to auto mode.
[DeviceB] dldp unidirectional-shutdown auto
3) Verifying the configurations
You can use the display dldp command to display the DLDP configuration information on ports.
# Display the DLDP configuration information on all the DLDP-enabled ports of Device A.
[DeviceA] display dldp
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