Roles In A Cluster - Huawei S9300 Configuration Manual

S9300&S9300E Terabit Routing Switch
Configuration Guide - Network Management
After receiving an NDP packet from the neighbor, the device compares the contents of the packet
with those of a corresponding entry in the NDP table and updates the entry.
NTDP
In HGMP, Network Topology Discovery Protocol (NTDP) is used to collect information about
topologies. According to the neighbor information in the NDP table, the device sends and
forwards requests for topology collection, and then collects entries in the NDP table of each
device in a certain network segment.
After receiving an NTDP topology request packet, the device sends an NTDP response packet
immediately. At the same time, the device forwards the received NTDP packet to other interfaces
according to NTDP forwarding rules.

Roles in a Cluster

HGMP defines four roles in a cluster: administrator switch, member switch, candidate switch,
and standby switch.
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You can determine the role of a switch in a cluster. Each of the four roles, however, can be
changed according to certain rules.
Basic Cluster Management
The basic cluster management includes the following items:
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Issue 01 (2012-03-15)
NOTE
Currently, the S9300&S9300E cannot function as a standby switch.
An administrator switch is the management device in a cluster. To ensure the
communication between devices in and out of the cluster, you need to assign a public IP
address to the administrator switch.
A member switches is the member device in a cluster. The member switch is managed by
the administrator switch that acts as an agent. Therefore, the public IP address is not required
for a member switch.
A candidate switch is a device that has the cluster function but does not join any cluster.
A standby switch is the backup administrator switch in a cluster. When the administrator
switch fails, the standby switch automatically serves as the administrator switch.
Establishment of a cluster management domain
Addition and deletion of a member
Status transition of a member
Communication in the cluster
Switchover between the administrator switch and the candidate switch
Display of the topology
Modification of the cluster management configuration
Automatic configuration of SNMP
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