H3C Technologies H3C S5120 Series Switches - Manual (Page 681)

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To do… Use the command… Remarks
Enter system view system-view —
Configure the maximum hops
for topology collection
ntdp hop hop-value
Optional
3 by default.
Configure the interval to collect
topology information
ntdp timer interval
Optional
1 minute by default.
Configure the delay to forward
topology-collection request
packets on the first port
ntdp timer hop-delay
delay-time Optional
200 ms by default.
Configure the port delay to
forward topology collection
request on other ports
ntdp timer port-delay
delay-time Optional
20 ms by default.
The two delay values should be configured on the topology collecting device. A topology collection
request sent by the topology collecting device carries the two delay values, and a device that receives
the request forwards the request according to the delays.
Manually Collecting Topology Information
The management device collects topology information periodically after a cluster is created. In addition,
you can configure to manually initiate topology information collection, thus managing and monitoring
the device on real time, regardless of whether a cluster is created.
Follow these steps to configure to manually collect topology information:
To do… Use the command… Remarks
Manually collect topology
information
ntdp explore Required
Enabling the Cluster Function
To do… Use the command… Remarks
Enter system view system-view —
Enable the cluster function
globally
cluster enable
Optional
Enabled by default.
Establishing a Cluster
Before establishing a cluster, you need to specify the management VLAN, and you cannot modify the
management VLAN after a device is added to the cluster.
In addition, you need to configure a private IP address pool for the devices to be added to the cluster on