Filter
Top Products
22-12
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.10, Part Number 78-11603-01 Rev. D0, July 2001
Chapter 22 Configuring Frame Relay to ATM Network and Service Interworking
OAM Cells
ATF connections can be mastered by the IGX switch or BPX switch end.
ATF bundled connections and ATF point-to-point connections are not supported.
ATF connections use the Frame Relay trunk queues: bursty data A for non-ForeSight, bursty data B for
ForeSight.
Bandwidth related parameters are defined using cells per second (cps) on the BPX switch and bits per
second (bps) on the IGX switch. On a given endpoint node, the bandwidth parms for both ends of the
ATF connection are changed/displayed using this end’s units. This saves you from having to convert
from cps to bps repeatedly.
ATF with ForeSight connections use the Abr egress queue.
ATF Connection Management
Use these commands to provision and modify ATF connections:
• addcon
• cnfcls
• cnfcon
• delcon
• dspcls
• dspcon
• dspcons
Structure
• NNI
The NNI format supports a 12-bit VPI. Abit status changes are passed to the remote end of the
connection.
• ILMI
The ILMI MIB and protocol was implemented in release 7.2. The additional support in consists of
an activation and configuration interface, collection of statistics, and end-to-end status updates
• LMI Annex G
The LMI Annex G protocol was implemented in release 7.2. The additional support consists of an
activation and configuration interface, collection of statistics, and end-to-end status updates.
• Port egress queue configuration
You can configure each of the pre-defined port egress queues. These queues consist of Cbr, Vbr,
and Vbr with ForeSight (Abr). The configurable parameters are queue depth, EFCN threshold, and
CLP thresholds.
• Backward congestion management
Backward congestion management cells indicate congestion across the UNI or NNI. Transmission
of these cells is enabled on a per-port basis. Software allows BCM to be configured on a UNI or
NNI port for maximum flexibility should BCM over UNI be standards-defined.