Cisco Systems 8600 Series manual Inverse Multiplexing ATM

BPX Switch Operation

Figure 1-4 Tiered Network with BPX Switch and IGX Switch Routing Hubs

Inverse Multiplexing ATM

Where greater bandwidths are not needed, the Inverse Multiplexing ATM (IMA) feature provides a low cost trunk between two BPX switches. The IMA feature allows BPX switches to be connected to one another over any of the 8 T1 or E1 trunks provided by an AIMNM module on an MGX 8220 shelf. A BNI port on each BPX switch is directly connected to an AIMNM module in an MGX 8220 by a T3 or E3 trunk. The AIMNM modules are then linked together by any of the 8 T1 or E1 trunks. Refer to the Cisco MGX 8220 Reference and the Cisco WAN Switching Command Reference publications for further information.

1-12Cisco BPX 8600 Series Reference