4.3.2.3 Translation VLAN

This option allows you to configure the translation VLAN table, which defines some special VLAN working rules such as VLAN stack, VLAN cross-connect, etc. Before you configure the Translation VLAN table for a line bridge port, you shall configure the Static VLAN table for this line bridge port and the GIGA bridge port in advance. Also, you shall disable VLAN stacking feature of this line bridge port in the ADSL bridge interface setup page (refer to section 4.3.1), otherwise the VLAN translation rule here will not take effect. From the Bridge menu, click on VLAN Configuration and then Translation VLAN. The following page is displayed. Click on the radio button to select translation Mode first.

Actually the IDL-2402 provides five translation modes: four for 1:1 VLAN, one for N: 1 VLAN (refer to DSL Forum TR-101).

1:1 VLAN (including 1:1 User Mode and C_VLAN Stacking Replaced Mode):

If the ADSL user bridge port only has 1:1 VLAN, then MAC learning function of this bridge port can be disabled.

1.Reserved

In this mode, the system does not make any change on C-Tag. That is the uplink port’s S-Tag is actually the C-Tag. The system provides a tunnel for the user port and uplink port. And one VLAN ID can only make one tunnel.

2.Replaced

In this mode, the system will change the user port’s C-Tag to the Uplink port’s S-Tag. And the mapping is one to one, that is, one user port’s C-Tag (one VID) can only translate to one uplink port’s S-Tag (one VID), and vice versa. For example, for ADSL Port1-PVC1, if ADSL VID 5 translates to GIGA1 VID 1, then you cannot make ADSL VID 5 translate to another GIGA VID. You also cannot make another ADSL VID translate to GIGA VID1.

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