Cabletron Systems SmartSwitch Router Reference Manual page 83

Recommended Action:
Remove the command which generated the message from the configuration. Use the
"interface add ip" command to add an IP address to the interface, if desired.
-INTERFACE-E-SUBNETEXISTS The address <IP_address> belongs to a sub-
net which is already configured on this system.
Explanation:
The user is trying to create an interface on a subnet which is already configured on
another interface on the same device.
Recommended Action:
Remove the command that generated the error message from the configuration.
SSR-8 Error Reference Manual
Chapter 10: Interface Configuration Error Messages
10 - 9