Trunk Queues For Rt-Vbr And Nrt-Vbr; Port Queues For Rt-Vbr And Nrt-Vbr - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

rt-VBR and nrt-VBR Connections

Trunk Queues for rt-VBR and nrt-VBR

A rt-VBR connection uses the rt-VBR queue on a trunk. It shares this queue with voice traffic. The
rt-VBR and voice traffic shares the default or user configured parameters for the rt-VBR queue. These
parameters are queue depth, queue CLP high and CLP low thresholds, EFCI threshold, and queue
priority.
A nrt-VBR connection uses the nrt-VBR queue on a trunk. The configurable parameters are queue
depth, queue CLP high and CLP low thresholds, EFCI threshold, and queue priority.
You can configure the qbin values separately for rt-VBR and nrt-VBR classes on trunks by using the
cnftrkparm command.
•
•
This example shows the cnftrkparm screen and the parameters that can be configured for the various
service type queues:
pubsbpx1
TRK 2.4 Parameters
1 Q Depth - rt-VBR
2 Q Depth - Non-TS
3 Q Depth - TS
4 Q Depth - BData A
5 Q Depth - BData B
6 Q Depth - High Pri
7 Max Age - rt-VBR
8 Red Alm - I/O (Dec) [
9 Yel Alm - I/O (Dec) [
10 Low
11 High CLP - BData A
12 Low
13 High CLP - BData B
14 EFCN
This Command: cnftrkparm 2.4

Port Queues for rt-VBR and nrt-VBR

The rt-VBR and nrt-VBR connections use different queues on a port, these are the rt-VBR and nrt-VBR
queues, respectively. You can configure these separately by using the cnfportq command.
The following example shows he configuration parameters available for a port queue.
Cisco BPX 8600 Series Installation and Configuration
21-20
For rt-VBR, the cnftrkparm command configures Q-depth rt-VBR and Max Age rt-VBR.
For nrt-VBR, the cnftrkparm command configures Q-depth nrt-VBR, Low CLP nrt-VBR, and
High CLP nrt-VBR.
TN silves:1
[ 885] (Dec)
[ 1324] (Dec)
[ 1000] (Dec)
[10000] (Dec)
[10000] (Dec)
[ 1000] (Dec)
[
2500 /
2500 /
CLP - BData A [ 100] (%)
[ 100] (%)
CLP - BData B [ 25] (%)
[ 75] (%)
- BData B [ 30] (Dec)
BPX 8620 9.2.2G
15 Q Depth
16 Q Depth
17 Q Depth
18 Low CLP
19 High CLP
20 Low CLP
20] (Dec) 21 High CLP
10000]22 Low CLP/EPD-ABR
10000]23 High CLP
24 EFCN
25 SVC Queue Pool Size [
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 21 Configuring ATM Connections
July 16 1999 10:50 PDT
- CBR [ 600] (Dec)
- nrt-VBR [ 5000] (Dec)
- ABR [20000] (Dec)
- CBR [ 60] (%)
- CBR [ 80] (%)
- nrt-VBR [ 60] (%)
- nrt-VBR [ 80] (%)
[ 60] (%)
- ABR [ 80] (%)
- ABR [ 20] (%)
0] (Dec)