3Com 4210 PWR Configuration Manual page 321

Table 239 Description of cluster roles
Role
Management device
Member device
Candidate device
Figure 100 illustrates the state machine of cluster role.
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
Cluster Overview 319
Function
Provides an interface for
■
managing all the switches
in a cluster
Manages member devices
■
through command
redirection, that is, it
forwards the commands
intended for specific
member devices.
Discovers neighbors,
■
collects the information
about network topology,
manages and maintains
the cluster. Management
device also supports FTP
server and 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 member
devices of a luster are
under the management of
the management device.
Candidate device refers to the
devices that do not belong to
any clusters but are
cluster-capable.