H3C S3100-52P Operation Manual page 609

Operation Manual – Stack-Cluster
H3C S3100-52P Ethernet Switch
Table 2-1 Description on cluster roles
Role
Management
device
Member
device
Candidate
device
Figure 2-2
Designates as a
management switch
Management switch
Figure 2-2 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.
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
illustrates the state machine of cluster role.
Candidate Switch
Cancels the
designated
management
switch
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
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.
Leaves a
cluster
Joins a
cluster
Member switch
2-3
Chapter 2 Cluster
Function
topology, manages and