914 CHAPTER 73: CLUSTER MANAGEMENT CONFIGURATION
Enabling the Cluster
Function
Establishing a Cluster Before establishing a cluster, you need to configure a private IP address pool for
the devices to be added to the cluster. When a candidate device is added to a
cluster, the management device assigns a private IP address to it for the candidate
device to communicate with other devices in the cluster. This enables you to
manage and maintain member devices in a cluster through the management
device.
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CAUTION:
■ If the routing table of the management device is full when a cluster is created,
that is, entries with the destination address as a candidate device cannot be
added to the routing table, all candidate devices will be added to and removed
from the cluster repeatedly.
■ If the routing table of a candidate device is full when the candidate device is
added to the cluster, that is, entries with the destination address as the
management device cannot be added to the routing table, the candidate
device will be added to and removed from the cluster repeatedly.
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CAUTION:
■ You can only specify a management VLAN before establishing a cluster. After a
device has been added to the cluster, you cannot modify the management
VLAN. To change the management VLAN after the cluster is established, you
should remove the cluster on the management device, re-specify the
management VLAN and reestablish a cluster.
■ For the purpose of security, you are not recommended to configure the VLAN
ID of the management VLAN as the default VLAN ID of the port connecting the
management device to its member devices.
■ Only when the default VLAN ID of all subtending ports and the port connecting
the management device to its member device is that of the management
VLAN, can the packets without a tag from the management VLAN pass the
ports. Otherwise, you must configure the packets from the management VLAN
to pass these ports. For the configuration procedure, refer to “VLAN
Configuration” on page 83.
■ You must configure the IP address pool before establishing a cluster and
configure it on the management device only. If a cluster has already been
established, you are not allowed to change the IP address pool.
Manually establishing a cluster
Follow these steps to manually establish a cluster:
To do… Use the command… Remarks
Manually collect NTDP
information
ntdp explore Required
To do… Use the command… Remarks
Enter system view system-view -
Enable the cluster function
globally
cluster enable Optional
Enabled by default.
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