H3C S5600 Series Operation Manual page 828

Table 1-1 Description on cluster roles
Role
Management device
Member device
Candidate device
Figure 1-2 illustrates the state machine of cluster role.
Figure 1-2 State machine of cluster role
A candidate device becomes a management device when you create a cluster on it. Note that a
cluster must have one (and only one) management device. On becoming a management device,
the device collects network topology information and tries to discover and determine candidate
devices, which can then be added to the cluster through configurations.
A candidate device becomes a member device after being added to a cluster.
A member device becomes a candidate device after it is removed from the cluster.
Configuration
Configured with a external IP
address
Normally, a member device is not
assigned an external IP address
Normally, a candidate device is not
assigned an external IP address
1-3
Function
Provides an interface
managing all the switches in a
cluster
Manages member
through command redirection,
that is, it forwards
commands intended
specific member devices.
Discovers neighbors, collects
the information about network
topology, manages
maintains the
Management device
supports FTP server
SNMP host proxy.
Processes the commands
issued by users through the
public network
Members of a cluster
Discovers the information
about its neighbors, processes
the commands forwarded by
the management device, and
reports log. The
devices of a luster are under
the management
management device.
Candidate device refers to the
devices that do not belong to any
clusters but are cluster-capable.
for
devices
the
for
and
cluster.
also
and
member
of the