Command Manual (For Soliton) – Stack-Cluster
H3C S3100 Series Ethernet Switches
Chapter 2 HGMP V2 Configuration
Commands
2-4
By default, NDP is enabled both globally and on ports.
Note that NDP can take effect on a port only when NDP is enabled both globally and on
the port.
Examples
# Enable NDP globally, and then enable NDP on port Ethernet 1/0/1.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] ndp enable
[Sysname] interface Ethernet 1/0/1
[Sysname-Ethernet1/0/1] ndp enable
2.1.3 ndp timer aging
Syntax
ndp timer aging aging-in-seconds
undo ndp timer aging
View
System view
Parameters
aging-in-seconds
: Holdtime of the NDP information, ranging from 5 to 255 seconds.
Description
Use the
ndp timer aging
command to set the holdtime of the NDP information. This
command specifies how long an adjacent device should hold the NDP neighbor
information received from the local switch before discarding the information.
Use the
undo timer aging
command to restore the default holdtime of NDP
information.
By default, the holdtime of NDP information is 180 seconds.
You can specify how long the adjacent devices should hold the NDP information
received from the local switch. When an adjacent device receives an NDP packet from
the local switch, it learns how long it should keep the NDP information of the switch
according to the holdtime carried in the NDP packet, and discards the NDP information
when the holdtime expires.
Note that NDP information holdtime should be longer than the interval between sending
NDP packets. Otherwise, a neighbor entry will be generated and age out frequently,
resulting in instability of the NDP port neighbor table.
