Configuring The Management Device; Enabling Ndp Globally And For Specific Ports; Configuring Ndp Parameters - H3C S5120-SI Series Operation Manual

Configuring the Management Device

Enabling NDP Globally and for Specific Ports

For NDP to work normally, you must enable NTDP both globally and on specific ports.
Follow these steps to enable NDP globally and for specific ports:
To do...
Enter system view
Enable NDP globally
Enable the
NDP feature
for the port(s)
You are recommended to disable NDP on the port which connects with the devices that do not need to
join the cluster, preventing the management device from adding the device which needs not to join the
cluster and collecting the topology information of this device.

Configuring NDP Parameters

A port enabled with NDP periodically sends NDP packets to its neighbors. If no NDP information from
the neighbor is received when the holdtime times out, the corresponding entry is removed from the NDP
table.
Follow these steps to configure NDP parameters:
To do...
Enter system view
Configure the interval for
sending NDP packets
Configure the period for the
receiving device to keep the
NDP packets
The time for the receiving device to hold NDP packets cannot be shorter than the interval for sending
NDP packets; otherwise, the NDP table may become instable.
Use the command...
system-view
ndp enable
In system
ndp enable interfaceinterface-list
view
In Ethernet interface interface-type
interface view interface-number
or Layer 2
aggregate
ndp enable
interface view
Use the command...
system-view
ndp timer hello hello-time
ndp timer aging aging-time
1-7
Remarks
—
Optional
Enabled by default.
Use either command
By default, NDP is enabled
globally and also on all ports.
Remarks
—
Optional
60 seconds by default.
Optional
180 seconds by default.