3Com Switch 4500 Family Manual page 551

By default, the fabric name of a Switch 4500 Series Ethernet switch is 4500.
Examples
# Change the fabric name of the device to hello.
<Sysname> display xrn-fabric
Fabric name is 4500, system mode is L3.
Unit Name
First
Second
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] sysname hello
[hello] display xrn-fabric
Fabric name is hello, system mode is L3.
Unit Name
First
Second
Unit ID
1
2(*)
Unit ID
1
2(*)
1-15