AL103 Revision 1.0
The VLAN registers hold a broadcast destination mask for each source port. The value “1” will
indicate the broadcast frames will be routed from the source port to the specified port. Note that the
source port bit must be set to “0” within the source port VLAN, because broadcast frames are not
routed to the source port.
For setting up VLAN for trunking, please see the following section on trunking for detail.
VLAN Set Up Example
A VLAN set up worksheet is provided in Appendix I. You can complete the VLAN map easily by
simply marking the ports you wish to send broadcast frame to.
For example, let’s assume we want to set up two VLAN groups in an 8-port switch:
Group 1 consists of: 0, 1, 2, 5, and 6.
Group 2 consists of: 2, 3, 4, and 7.
The completed VLAN bit maps are shown in Table 14.
Table 14: VLAN Map for an 8 Port Switch
PORT
BIT
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
1
1
1
1
1
0
1
1
1
0
0
1
0
1
0
0
1
0
0
0
1
1
0
0
0
1
0
0
0
1
1
1
0
0
1
0
0
1
1
1
0
0
0
1
1
1
0
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
9/00
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