3Com 7600 Static Addresses Allowed-to Binary Table, Bridge Ports Hex Value Bridge Ports Hex Value

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.

Table 6-23Hexadecimal 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

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.