Bridging

2-94 Setting Bridge Translation

There are two bit-order options:
¥LSBÑLeast SigniÞcant Bit
¥MSBÑMost SigniÞcant Bit
To set the bit order:
1. Click on the empty LSB or MSB option button. When the option button is filled
( ), the selected bit order is enabled.
The IBM Translation Table
The IBM Translation Table allows you to conÞgure the mode of frame translation
for IBM SNA frames bridged from a Token Ring network to an Ethernet network.
The device will translate IBM SNA frames using any of the Þve default SAP
Service Access Point) addresses to Ethernet Type-II frames with a type code of
80D5; these default SAP addresses are shown in the IBM Format Table as the Þrst
Þve entries.
Figure 2-35. The IBM Format Table
If the state on the entry is enabled, then the translation for the Token Ring frame
with the given SAP address will be translated to Ethernet Type-II frame format.
If the state of the entry is disabled, the frame will be bridged as a 802.2 frame
maintaining the SAP address information.
From the IBM Translation window you can change the Þrst Þve default SAP
address entries, or add up to 15 additional entries to the table for the purpose of
translating IBM SNA frames.
To view all the entries in the table you must click on the scroll box to the right of
the displayed entry. A small scrollable window will appear. You can scroll
through the window to view all the entries.
NOTE
Novell recommends setting the bit order to LSB (Least SigniÞcant Bit) when bridging
between Token Ring and Ethernet. When the bridge is set to operate in LSB mode, all the
NIC cards on the Token Ring network should also be conÞgured to operate in LSB mode.