
Configuring Bridging Services
2-20 114060 Rev. A
Example B: Between the first and last bridges to receive the SRF
Bay Networks Bridge B receives the frame from the IP network (Ring 2) and
performs the following steps on the RIF before it transmits the frame toward
Ring 3 (refer to refer to Figure
2-12):
1. Strips the IP header from the packet.
2. Changes the destination system’s MAC address at the beginning of the
frame to a Bay Networks group address.
This address appears as C000A2FFFFFFx, where x is the bridge ID of the
next Bay Networks bridge specified by the RIF.
3. Copies the destination system’s MAC address into the data portion of the
frame.
4. Locates the bridge ID, which is at the end of the group address, and sends
it to the bridge ID of the next Bay Networks bridge in the RIF.
Example C: Last of several bridges to receive the SRF
The last Bay Networks bridge to receive the frame performs the following steps in
the RIF before it transmits the frame toward Ring 4 (refer to refer to Figure
2-12):
1. Replaces the Bay Networks group address with the destination MAC
address that was saved to the data field.
2. Changes the group LAN ID to its own internal LAN ID.
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