H3C S3100 8C SI Operation Manual page 601

Operation Manual – Stack-Cluster
H3C S3100 Series Ethernet Switches
Note:
To reduce the risk of being attacked by malicious users against opened socket and
enhance switch security, the S3100 series Ethernet switches provide the following
functions, so that a cluster socket is opened only when it is needed:
Opening UDP port 40000 (used for cluster) only when the cluster function is
implemented,
Closing UDP port 40000 at the same time when the cluster function is closed.
On member devices, the preceding functions are implemented as follows:
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.
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.
When you execute the administrator-address command on a device, the device's
UDP port 40000 is opened at the same time.
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.
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.
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.
II. Enabling NDP globally and on specific ports
Follow these steps to enable NDP globally and on specific ports:
Enter system view
Enable NDP globally
Enable
NDP on
specified
ports
Operation
In system view
Enter
Ethernet
In
port view
Ethernet
port
Enable
view
NDP on
the port
Command
system-view
ndp enable
ndp enable interface
port-list
interface interface-type
interface-number
ndp enable
2-16
Chapter 2 Cluster
Description
—
Required
Required
Use either
approach.