21-20
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 21 Configuring ATM Connections
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.
•
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.
This example shows the cnftrkparm screen and the parameters that can be configured for the various
service type queues:
pubsbpx1
TN
silves:1
BPX 8620
9.2.2G
July 16 1999 10:50 PDT
TRK 2.4 Parameters
1 Q Depth - rt-VBR
[
885] (Dec)
15 Q Depth
- CBR
[
600] (Dec)
2 Q Depth - Non-TS
[ 1324] (Dec)
16 Q Depth
- nrt-VBR [ 5000] (Dec)
3 Q Depth - TS
[ 1000] (Dec)
17 Q Depth
- ABR
[20000] (Dec)
4 Q Depth - BData A
[10000] (Dec)
18 Low
CLP
- CBR
[
60] (%)
5 Q Depth - BData B
[10000] (Dec)
19 High CLP
- CBR
[
80] (%)
6 Q Depth - High Pri
[ 1000] (Dec)
20 Low
CLP
- nrt-VBR [
60] (%)
7 Max Age - rt-VBR
[
20] (Dec)
21 High CLP
- nrt-VBR [
80] (%)
8 Red Alm - I/O (Dec) [
2500 /
10000]22 Low CLP/EPD-ABR
[
60] (%)
9 Yel Alm - I/O (Dec) [
2500 /
10000]23 High CLP
- ABR
[
80] (%)
10 Low
CLP - BData A
[ 100] (%)
24 EFCN
- ABR
[
20] (%)
11 High CLP - BData A
[ 100] (%)
25 SVC Queue Pool Size [
0] (Dec)
12 Low
CLP - BData B
[
25] (%)
13 High CLP - BData B
[
75] (%)
14 EFCN
- BData B
[
30] (Dec)
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.
Содержание BPX 8600 Series
Страница 43: ...P A R T 1 The BPX Switch ...
Страница 44: ......
Страница 151: ...P A R T 2 Installation ...
Страница 152: ......
Страница 261: ...P A R T 3 Initial Configuration and Network Management ...
Страница 262: ......
Страница 291: ...P A R T 4 Configuring Connections ...
Страница 292: ......
Страница 481: ...P A R T 5 Troubleshooting and Maintenance ...
Страница 482: ......
Страница 531: ...P A R T 6 BPX Specifications ...
Страница 532: ......
Страница 563: ...P A R T 7 Appendices ...
Страница 564: ......
Страница 624: ...Glossary 24 Cisco BPX 8600 Series Installation and Configuration Release 9 3 0 Part Number 78 10674 01 Rev D0 July 2001 ...
Страница 630: ...Index 6 Cisco BPX 8600 Series Installation and Configuration Release 9 3 0 Part Number 78 10674 01 Rev D0 July 2001 ...