Switch Roles In The Cluster - Huawei Quidway S3900 Series Operation Manual

Operation Manual – Cluster
Quidway S3900 Series Ethernet Switches-Release 1510
The management device of a cluster recognizes and controls all the member
devices in the cluster, no matter where they are located on the network or how
they are connected.
The management device collects topology information about all the member and
candidate devices to provide useful information for users to establish a cluster.
A management device manages and monitors the devices in the cluster by
collecting and processing NDP/NTDP packets. NDP/NTDP packets contain
network topology information.
All the above-mentioned operations need the support of the cluster function.
Note:
You need to enable the cluster function and configure cluster parameters on a
management device. However, you only need to enable the cluster function on the
member devices and candidate devices.
Additionally, you can configure public FTP server, TFTP server, logging host and SNMP
host for the whole cluster. When the members in the cluster communicate with external
servers, the data is transmitted to the management device first and then transmitted to
external servers through the management device. When the public FTP/TFTP server is
not configured for the cluster, the management device is the default FTP/TFTP server
of the cluster.
You can specify the network management interface of the management device in order
that the network administrator can access the management device through the
specified network management interface to manage the devices in the cluster. The
most significant function of cluster is to perform large-scaled device management
together with the network administrator.
Note:
By default, the network management interface is a management VLAN interface.
There can be only one network management interface, and the reconfigured
network management interface will replace the old one.

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.
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Chapter 1 Cluster