TP-Link T2500-28TCTL-SL5428E T2500-28TCUN V1 CLI Reference Guide - Page 323

T2500-28TC JetStream L2 Managed Switch CLI Guide Chapter 38 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 disable this 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: 306