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GS748T Smart Switch 
• Source IPv6 Prefix/Length - This is a valid Source IPv6 Prefix to compare against an 
IPv6 Packet. Prefix is always specified with the Prefix Length. Prefix can be entered in 
the range of ::0 to FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF and Prefix Length 
can be entered in the range of 0 to 128.
• Source L4 Port - This lists the keywords for the known source layer 4 ports from 
which one can be selected. The list includes 'other' as an option for the unnamed 
ports.
• Destination IPv6 Prefix/Length - This is a valid Destination IPv6 Prefix to compare 
against an IPv6 Packet. Prefix is always specified with the Prefix Length. Prefix can 
be entered in the range of ::0 to FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF and 
Prefix Length can be entered in the range of 0 to 128.
• Destination L4 Port - This lists the keywords for the known destination layer 4 ports 
from which one can be selected. The list includes 'other' as an option for the unnamed 
ports.
• IP DSCP - This lists the keywords for the known DSCP values from which one can be 
selected. The list includes 'other' as an option for the remaining values.
• Flow Label - This is a 20-bit number that is unique to an IPv6 Packet, used by end 
stations to signify Quality of Service handling in routers. Flow Label can be specified 
in the range of (0 to 1048575).
5. Click CANCEL to cancel the configuration on the screen. Resets the data on the screen to 
the latest value of the switch.
6. Click APPLY to send the updated configuration to the switch. Configuration changes take 
effect immediately.