Operation Manual - Integrated Management
Quidway S3000-EI Series Ethernet Switches
Chapter 2 HGMP V2 Configuration
Huawei Technologies Proprietary
2-6
2.2.4 Set NDP Holdtime
The NDP holdtime specifies how long the adjacent node can keep the local node
information. The adjacent device knows the holdtime from the received NDP packet
and will discard the packet when it expires.
Perform the following configuration in System view.
Table 2-3
Set NDP Holdtime
Operation
Command
Set NDP Holdtime
ndp timer aging aging-in-secs
Restore the default NDP holdtime.
undo ndp timer aging
Note that NDP holdtime is supposed to be longer than the NDP timer (described in the
following section). Otherwise, NDP information table will be unstable.
By default, NDP is hold for up to 180 seconds.
2.2.5 Set NDP Timer
The NDP information of the adjacent nodes shall be updated frequently to guarantee
the timely updating for local information. You can use the following command to decide
how often the NDP information will be updated.
Perform the following configuration in System view.
Table 2-4
Set NDP timer
Operation
Command
Set NDP timer
ndp timer hello seconds
Set the NDP timer back to the default setting
undo ndp timer hello
Note that NDP timer is supposed to be shorter than the NDP holdtime (described in the
previous section). Otherwise, NDP information table will be unstable.
By default, NDP is transmitted every 60 seconds.
2.2.6 Display and Debug NDP
After the above configuration, execute
display
command in any view to display the
running of the NDP configuration, and to verify the effect of the configuration. Execute
reset
command in user view to clear the statistics of NDP module. Execute
debugging
command in user view to debug the NDP module.
