3Com Switch 4200G Configuration Guide

388 CHAPTER 45: CONFIGURATION OF NEWLY ADDED CLUSTER FUNCTIONS
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user-interface aux 0
user-interface vty 0 4
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return
Configuring Topology
Authentication
You can save a reference topology file that serves as the basis of the current network
topology. It can be used to locate problems in subsequent network topologies. After
you confirm the structure of the current network through CLI according to the actual
cluster deployment, the master device generates a reference topology file named
topology.top. The file is saved in the Flash. It contains the information about the link
states of all the nodes in the cluster.
A reference topology file contains a white list and a black list.
■ The white list contains legal devices. (Legal devices are those confirmed by users.)
■ The blacklist contains illegal devices. (Illegal devices are those that fail to pass the
topology authentication.)
Thereafter, each time a device attempts to join a cluster, the master device
automatically initiates topological authentication based on the reference topology
file.
■ If the device is in the black list, the master device denies the device.
■ If the device is in the white list, the master device adds the device to the cluster
and automatically delivers the private configuration of the node to the device.
■ If the device is neither in the blacklist nor the white list, the master device adds the
device to the cluster but do not deliver private configuration to the device. The
app file on the device cannot be automatically upgraded.
■ Only the candidates passing topology authentication become member devices of
the cluster, and only the devices confirmed by users can be added to the white list.
Configuration prerequisites
■ NDP and NTDP configurations are performed on the related cluster devices.
■ The cluster is created and enabled. That is, you can manage cluster members
through the master device.