H3C S9500 Series Command Manual page 1739

Command Manual – Cluster Management
H3C S9500 Series Routing Switches
Description
Use the ndp timer aging command to specify the period during which the receiving
device will hold the NDP packets sent by the current device, namely, the NDP
information aging timer, after which the receiving device discards the NDP information.
Use the undo ndp timer aging command to restore the default aging timer of NDP
information.
By default, the aging timer for NDP information is 180 seconds.
Upon receipt of NDP packets, from the aging timer information carried in the packets,
the device can learn about the aging timer for the NDP information of the neighbor
device that sent the packets and discards the NDP information once the aging timer is
exceeded.
The aging timer for NDP information must be greater than the interval at which NDP
packets are sent; otherwise, the NDP information table will be unstable.
Examples
# Configure the aging timer for NDP information as 60 seconds.
<H3C>system-view
System View: return to User View with Ctrl+Z.
[H3C] ndp timer aging 60
2.1.4 ndp timer hello
Syntax
ndp timer hello seconds
undo ndp timer hello
View
System view
Parameters
seconds: Interval, in seconds, at which NDP packets are sent. By default, NDP packets
are sent every 60 seconds.
Description
Use the ndp timer hello command to specify the interval at which NDP packets are
sent.
Use the undo ndp timer hello command to restore the default interval at which NDP
packets are sent.
By default, NDP packets are sent every 60 seconds.
Chapter 2 NDP Configuration Commands
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