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BXM Functional Description
Figure 5-11 BXM APS Redundant Frame Assembly
BXM Functional Description
This functional description provides an overview of BXM operation.
Operation in Port (UNI/NNI) Mode
This section is an overview of operation when a BXM card port is configured in port (access) mode for
connection to customer equipment.
The ingress flow of ATM cells from CPE into a BXM port when the card is configured for port (access)
operation is shown in Figure 5-12.
ATM cells from the customer premise equipment are:
•
•
•
•
Cisco BPX 8600 Series Installation and Configuration
5-22
Processed at the physical interface level by the SUNI (OC-3/OC-12) or Mux/Demux (T3/E3).
Policed per individual VC by the RCMP.
Routed to applicable ingress queues.
Served out through the BPX backplane to the BPX crosspoint switch in an order of priority based
on their connection type.
Nylon standoffs
APS redundant
backplane
connector
Nylon standoffs
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 5
BXM Card Sets: T3/E3, 155, and 622
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Table of Contents
Troubleshooting
