Huawei Quidway S3900 Series Operation Manual page 741

Operation Manual – Cluster
Quidway S3900 Series Ethernet Switches-Release 1510
The following three switch roles exist in a cluster: management device, member device,
and candidate device.
Table 1-1 Switch roles in the cluster
Role
Management
device
Member device
Candidate device
The switch roles are switched according to the following rules:
Configuration
Configured with a public
IP address.
Receive management
commands that a user
sends through the public
network and process the
received commands
Normally, a member device
is not configured with a
public IP address
Normally, a candidate device
is not configured with a
public IP address
Huawei Technologies Proprietary
1-5
Chapter 1 Cluster
Description
Provide management
interfaces for all switches
in the cluster
Manage member devices
by redirecting commands,
that is, forward
commands to the intended
member devices
processing
Provide the following
functions, including
neighbor discovery,
topology information
collection,
management, and cluster
state maintenance, and
support all types of FTP
servers and SNMP host
proxies
Member in the cluster
Neighbor discovery, being
managed by
management
running commands
forwarded by proxies, and
failure/log reporting
A candidate device is a switch
that does not belong to any
cluster, although it can be
added to a cluster
the
for
cluster
the
device,