3Com Switch 4500 Family Manual page 607

This command is applicable to only the management device of a cluster.
Related commands: topology restore-from.
Examples
# Enter Cluster view.
<aaa_0.Sysname>system-view
System View: return to User View with Ctrl+Z.
[aaa_0.Sysname] cluster
[aaa_0.Sysname-cluster]
# Save the standard topology of the cluster to the local Flash.
[aaa_0.Sysname-cluster] topology save-to local-flash
Base topology backup to file OK
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