H3C Technologies H3C S3100 Series Switches - Manual (Page 436)

Operation Manual – Cluster
H3C S3100-52P Ethernet Switch Chapter 1 Cluster
1-13
Note:
To reduce the risk of being attacked by malicious users against opened socket and
enhance switch security, the S3100-52P Ethernet switches provide the following
functions, so that a cluster socket is opened only when it is needed:
z
Opening UDP port 40000 (used for cluster) only when the cluster function is
implemented,
z
Closing UDP port 40000 at the same time when the cluster function is closed.
On member devices, the preceding functions are implemented as follows:
z
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.
z
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.
z
When you execute the administrator-address command on a device, the device's
UDP port 40000 is opened at the same time.
z
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.
z
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.
z
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.