T3700G-28TQ
 
JetStream 28-Port Gigabit Stackable L3 Managed Switch CLI Guide 
 
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Chapter 32  Cluster Commands 
Cluster Management function enables a network administrator to manage the scattered devices in 
the network via a management device. After a commander switch is configured, management and 
maintenance operations intended for the member devices in a cluster is implemented by the 
commander device. 
cluster ndp 
Description 
The  cluster ndp command is used to configure NDP globally. To diable the 
cluster NDP function, please use no cluster ndp command. NDP (Neighbor 
Discovery Protocol) is used to discover the information of the directly connected 
neighbor devices to support cluster establishing. An NDP-enabled device sends 
NDP packets regularly to neighbor devices as well as receives NDP packets 
from neighbor devices. An NDP packet carries the aging time, which indicates 
the period of the receiving devices to keep the NDP packet. 
Syntax 
cluster ndp   
cluster ndp timer { [hello hello-time ] [aging aging-time] } 
no cluster ndp 
no cluster ndp timer { [hello hello-time ] [aging aging-time] } 
Parameter 
hello-time  —— Hello Time, which is the interval to send NDP packets. Hello 
Time ranges from 5 to 254 in seconds. By default, it is 60. Hello Time should be 
smaller than Aging Time. 
aging-time  ——  Aging Time, which is the period for the neighbor switch to keep 
the NDP packets from this switch. Aging Time ranges from 5 to 255 in seconds. 
By default, it is 180. 
Command Mode 
Global Configuration Mode 
Example 
Enable NDP function globally, and configure Aging Time as 120 seconds, Hello 
Time as 50 seconds: