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To do…
Use the command…
Remarks
Enter Ethernet interface view or
Layer 2 aggregate interface view
interface
interface-type
interface-number
—
Enable NTDP for the port
ntdp enable
Optional
NTDP is enabled on all ports by default.
NOTE:
HP recommends that you disable NTDP on a port which connects with the switches that do not need to join
the cluster. This prevents the management switch from adding and collecting topology information from
switches which do not need to join the cluster.
Configuring NTDP parameters
By configuring the maximum hops for collecting topology information, you can get topology information
of the switches in a specified range, thus avoiding unlimited topology collection.
After the interval for collecting topology information is configured, the switch collects the topology
information at this interval.
To avoid network congestion caused by large amounts of topology responses received in short periods:
•
Upon receiving an NTDP topology-collection request, a switch does not forward it immediately.
Instead, it waits for a period of time and then forwards the NTDP topology-collection request on its
first NTDP-enabled port.
•
Except for its first port, each switch’s NTDP-enabled ports wait for a period of time, and then
forward the NTDP topology collection request after the previous port forwards it.
Follow these steps to configure NTDP parameters:
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.
NOTE:
The two delay values should be configured on the topology collecting switch. A topology-collection
request sent by the topology collecting switch carries the two delay values, and a switch that receives the
request forwards the request according to the delays.