Ntdp Hop - H3C s3100 series Command Manual

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Use the ntdp explore command to manually start a topology collection process.

NTDP is able to periodically collect topology information. In addition, you can use this command to

manually start a topology collection process at any moment. If you do this, NTDP collects NDP

information from all devices in a specific network range (which can be set through the ntdp hop

command) as well as the connection information of all its neighbors. Through this information, the

management device or the network management software knows the topology in the network range,

and thus it can manage and monitor the devices in the range.

# Start a topology collection process.

<Sysname> ntdp explore

ntdp hop

ntdp hop hop-value

undo ntdp hop

hop-value: Maximum hops to collect topology information, namely, the topology collection range, in the

range of 1 to 16.

Use the ntdp hop command to set the topology collection range.

Use the undo ntdp hop command to restore the default topology collection range.

By default, the topology collection range is three hops.

With the ntdp hop command, you can specify to collect topology information from the devices within a

specified range to avoid infinite collection. That is, you can limit the range of topology collection by

setting the maximum hops from the collecting device to the collected devices. For example, if you set

the maximum hops to two, the switch initiating the topology collection collects topology information from

the switches within two hops.

The topology collection range set by this command is applicable to both the periodic and manual

topology collection.

This command is only applicable to topology-collecting device, and a wider collection range

requires more memory of the topology-collecting device.

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