Display Static Entries in Forwarding Database
6-17
Static Addresses Allowed-to Binary Table
The Allowed-to field specifies where the frames arriving on a given
address and bridge port must be forwarded to. This field consists of two
nibbles, each of which is a hexadecimal number whose binary value
signifies the bridge ports to be forwarded to within the specified bridge.
Five bits are used, corresponding to the 5 bridge ports - 4 Fast Ethernet
ports and 1 internal ATM port as shown in the following table.
If, for example, the Allowed-to field is “f800”, then the frames will be
forwarded to bridge ports 1, 2, 3, 4, and 5. If the Allowed-to field is
“1800” then the frames will be forwarded to bridge ports 4 and 5.
Table 6-23 Hexadecimal Codes for Displaying Multiple Bridge Ports
Bridge Ports Hex Value Bridge Ports Hex Value
1 2 3 4 5 X X X
0 0 0 1 1 0 0 0 1 1
0 0 1 0 2 0 0 1 0 2
0 0 1 1 3 0 0 1 1 3
0 1 0 0 4 0 1 0 0 4
0 1 0 1 5 0 1 0 1 5
0 1 1 0 6 0 1 1 0 6
0 1 1 1 7 0 1 1 1 7
1 0 0 0 8 1 0 0 0 8
1 0 0 1 9 1 0 0 1 9
1 0 1 0 a 1 0 1 0 a
1 0 1 1 b 1 0 1 1 b
1 1 0 0 c 1 1 0 0 c
1 1 0 1 d 1 1 0 1 d
1 1 1 0 e 1 1 1 0 e
1 1 1 1 f 1 1 1 1 f
abtthgde.book Page 17 Tuesday, June 23, 1998 10:29 AM
