Switch Roles In The Cluster - H3C S7500 Series Operation Manual

Operation Manual – Cluster
H3C S7500 Series Ethernet Switches
the management device transmits the data to the external server. When the
management program running on the external server manages the member
device, the external server transmits the protocol packets to the management
device first, and then the management device forwards the protocol packets to the
member device.
You can configure public FTP servers, TFTP servers, logging hosts and SNMP hosts
for the whole cluster. The management device in the cluster is the default public FTP
server of the cluster when the public FTP server of the cluster is not configured. Cluster,
together with the network management system, can perform large-scaled device
management.
Note:
The S7500 series manage the cluster with VLAN 1, which serves as the management
VLAN in the cluster. You are required to configure the IP address of the Layer 3 virtual
interface of the management VLAN before setting up a cluster. Otherwise, the cluster
cannot be set up successfully. After the cluster is set up, you are not allowed to modify
the IP address of the management VLAN interface.

1.1.5 Switch Roles in the Cluster

According to their functions and status in a cluster, switches in the cluster play different
roles. You can specify the role a switch plays. A switch also changes its role according
to specific rules.
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
Configuration
Configured with a
public IP address.
Receive
management
commands that a
user sends
through the public
network and
process the
received
commands
1-5
Description
Provide management interfaces for all
switches in the cluster
Manage member devices by redirecting
commands, that is,
commands to the intended member
devices for processing
Provide the following
including neighbor discovery, topology
information collection,
management, and
maintenance, and support all types of
FTP servers and SNMP host proxies
Chapter 1 Cluster
forward the
functions,
cluster
cluster state