3Com Switch 4800G PWR 24-Port, Руководство по настройке

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2-14
To reduce the risk of being attacked by malicious users against opened socket and enhance switch
security, the Switch 4200G series Ethernet switches provide the following functions, so that a cluster
socket is opened only when it is needed:
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Opening UDP port 40000 (used for cluster) only when the cluster function is implemented,
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Closing UDP port 40000 at the same time when the cluster function is closed.
On member devices, the preceding functions are implemented as follows:
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When you execute the add-member command on the management device to add a candidate
device to a cluster, the candidate device changes to a member device and its UDP port 40000 is
opened at the same time.
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When you execute the auto-build command on the management device to have the system
automatically add candidate devices to a cluster, the candidate devices change to member devices
and their UDP port 40000 is opened at the same time.
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When you execute the administrator-address command on a device, the device's UDP port
40000 is opened at the same time.
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When you execute the delete-member command on the management device to remove a
member device from a cluster, the member device's UDP port 40000 is closed at the same time.
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When you execute the undo build command on the management device to remove a cluster, UDP
port 40000 of all the member devices in the cluster is closed at the same time.
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When you execute the undo administrator-address command on a member device, UDP port
40000 of the member device is closed at the same time.
Enabling NDP globally and on specific ports
Table 2-13 Enable NDP globally and on specific ports
Operation Command Description
Enter system view system-view —
Enable NDP globally ndp enable Required
In system view ndp enable interface port-list
Enter
Ethernet
port view
interface interface-type
interface-number Enable
NDP on
specified
ports
In
Ethernet
port view
Enable
NDP on
the port
ndp enable
Required
Use either
approach.
Enabling NTDP globally and on a specific port
Table 2-14 Enable NTDP globally and a specific port
Operation Command Description
Enter system view system-view —