Functional Description

Figure 2-12). To allow the IPX switch or IGX switch to be used in mixed networks with other ATM switches, there are two other addressing modes available, Cloud Addressing Mode (CAM) and Simple Addressing Mode (SAM).

BAM

In the BPX switch Addressing Mode (BAM), used for all Cisco WAN switching networks, the system software determines VPI and VCI values for each connection that is added to the network. The user enters the beginning and end points of the connection and the software automatically programs routing tables in each node that will carry the connection to translate the VPI/VCI address. The user does not need to enter anything more. This mode uses the STI header format and can support all of the optional Cisco WAN switching features.

SAM

In the Simple Addressing Mode (SAM), the user must manually program the path whole address, both VPI and VCI values.

CAM

The Cloud Addressing Mode (CAM) is used in mixed networks where the virtual path addresses are programmed by the user and the switch decodes the VCI address. Both CAM and SAM utilize the UNI header type.

General Description 2-13

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Cisco Systems 8600 Series manual Bam