Allied Telesis AT-S63 - Manual (Page 194)

Chapter 19: Ethernet Protection Switching Ring Snooping
194 Section III: Snooping Protocols
Supported Platforms
This feature is supported on the following AT-9400 Switches:
ˆ Layer 2+ Models
Not supported.
ˆ Basic Layer 3 Models
– AT-9424T
– AT-9424T/POE
– AT-9424Ts
– AT-9424Ts/XP
– AT-9448T/SP
– AT-9448Ts/XP
ˆ Stack of Basic Layer 3 Switches
– Not supported
This feature must be managed on a stand-alone switch from the command
line.