GPN QoS ImplementationDave Hartzell, Raytheon,Greatplains Network, And the USGS.

Need for QoSGPN (at the time) had two GSRs, one in KS and MN.

There was also a DS-3 backbone link between the two GSRs, with universities accessing the via 7500s, ATM DS-3s and OC-3s to the nearest GSR.

Access to GPNSome access links to the GPN (partial DS-3s) were filling up.

The universities were using H.323 to deliver class sessions, and the access circuits were experiencing congestion.

QoS on the GSRsGoal: Implement Premium Service and Scavenger ServiceUsed MDRR with RED and Priority Queuing Used CAR to more accurately track the occurrences of DSCP 8 and 46.

Monitoring GSRsTo monitor the GSRs, the Cisco CAR MIB was used.

There isnt an easy way to track MDRR queuing on the GSRs, at least with the Engine 0 OC-12 POS interface.

GSRs, SNMP Tools, and RRDTool

GSR Performance

Right now, since were not pushing the OC-12 to the limit, we havent seen any problems with CPU utilization on the Engine 0 cards.

QoS on Access CircuitsNext, similar QoS functions needed to be put on the Access routers and the Campus border routers.

There was a need to support H.323 video within some of the state networks.

QoS on 7500sIOS 12.1E was selected to support QoS over ATM PVCs. Other versions of IOS didnt seem to work as advertised.

Ciscos Modular Command Line QoS was used, in conjunction with QoS Device Manager 2.0

QoS on 7500sAlso, SNMP Tools and RRDTool were selected for monitoring

TestingTesting was performed with IPerf and different DSCPs (ToS bytes) to verify actually queuing and shaping.

For the most part, everything (on the 7500s) worked well.

Testing of QoS on ATM PVCs

Chart1

10.20.0-3.10.0-3.110.2

93.1-6.03.1-6.09

11.16.0-9.16.0-9.111.1

11.29.1-12.19.1-12.111.2

11.312.1-15.012.1-15.011.3

10.815.0-18.115.0-18.110.8

11.118.1-21.018.1-21.011.1

11.321.0-24.121.0-24.111.3

11.224.1-27.024.1-27.011.2

7.127.0-30.127.0-30.17.1

1.610.730.1-35.312.3

0.311.135.3-40.911.4

0.97510.940.9-40.911.875

0.99.540.9-42.610.4

0.811.342.6-49.112.1

0.10411.149.1-49.111.204

1.97.549.1-51.79.4

1.8851.7-54.39.8

2.19.454.3-57.511.5

3.79.157.5-60.212.8

1960.2-66.810

0.157.82.410.35

1.55.24.311

0.27.83.711.7

0.1577.14.411.657

0.2237.33.711.223

0.37.33.310.9

0.67.1411.7

0.66.74.211.5

0.56.7411.2

0.57.43.611.5

3.68.495.1-96.412

0.711.196.4-100.811.8

0.311.1100.8-106.211.4

0.13711.3106.2-106.211.437

0.211106.2-112.711.2

0.16311112.7-112.711.163

0.69.5112.7-122.810.1

0.15311.4122.8-122.811.553

0.23711.3122.8-122.811.537

0.411122.8-126.411.4

0.16110.5126.4-126.410.661

0.411.1126.4-133.811.5

0.15111133.8-133.811.151

0.311.1133.8-140.011.4

0.1611.3140.0-140.011.46

0.411.1140.0-144.311.5

0.1599.4144.3-144.39.559

1.311.1144.3-149.212.4

3.49.3149.2-150.712.7

11.2150.7-153.1150.7-153.111.2

11.3153.1-156.1153.1-156.111.3

11.3156.1-159.0156.1-159.011.3

11.1159.0-162.1159.0-162.111.1

8.8162.1-165.1162.1-165.18.8

11.8165.1-168.0165.1-168.011.8

10.7168.0-171.1168.0-171.110.7

11.2171.1-174.0171.1-174.011.2

11.3174.0-177.1174.0-177.111.3

11.2177.1-180.0177.1-180.011.2

QBSS

BE

Pri

Total

Time, in sec

MBit per sec

Throughput Test, Three classes

qbss

0.0-3.1sec3.7MBytes10.2Mbits/sec10.2

3.1-6.0sec3.1MBytes9Mbits/sec9

6.0-9.1sec4.1MBytes11.1Mbits/sec11.1

9.1-12.1sec3.9MBytes11.2Mbits/sec11.2

12.1-15.0sec3.9MBytes11.3Mbits/sec11.3

15.0-18.1sec3.9MBytes10.8Mbits/sec10.8

18.1-21.0sec3.9MBytes11.1Mbits/sec11.1

21.0-24.1sec4.1MBytes11.3Mbits/sec11.3

24.1-27.0sec3.9MBytes11.2Mbits/sec11.2

27.0-30.1sec2.5MBytes7.1Mbits/sec7.1

30.1-35.3sec1MBytes1.6Mbits/sec3.9MBytes10.7Mbits/sec12.3

35.3-40.9sec0.2MBytes0.3Mbits/sec3.9MBytes11.1Mbits/sec11.4

40.9-40.9sec0MBytes0.975Mbits/sec3.9MBytes10.9Mbits/sec11.875

40.9-42.6sec0.2MBytes0.9Mbits/sec3.7MBytes9.5Mbits/sec10.4

42.6-49.1sec0.6MBytes0.8Mbits/sec3.7MBytes11.3Mbits/sec12.1

49.1-49.1sec0MBytes0.104Mbits/sec3.9MBytes11.1Mbits/sec11.204

49.1-51.7sec0.6MBytes1.9Mbits/sec2.7MBytes7.5Mbits/sec9.4

51.7-54.3sec0.6MBytes1.8Mbits/sec2.9MBytes8Mbits/sec9.8

54.3-57.5sec0.8MBytes2.1Mbits/sec3.3MBytes9.4Mbits/sec11.5

57.5-60.2sec1.2MBytes3.7Mbits/sec3.1MBytes9.1Mbits/sec12.8

60.2-66.8sec0.8MBytes1Mbits/sec3.3MBytes9Mbits/sec10

66.8-66.8sec0MBytes0.15Mbits/sec3.1MBytes7.8Mbits/sec0.9MBytes2.4Mbits/sec10.35

66.8-70.9sec0.8MBytes1.5Mbits/sec1.5MBytes5.2Mbits/sec1.7MBytes4.3Mbits/sec11

70.9-79.4sec0.2MBytes0.2Mbits/sec2.7MBytes7.8Mbits/sec1.2MBytes3.7Mbits/sec11.7

79.4-79.4sec0MBytes0.157Mbits/sec2.5MBytes7.1Mbits/sec1.7MBytes4.4Mbits/sec11.657

79.4-79.4sec0MBytes0.223Mbits/sec2.7MBytes7.3Mbits/sec1.5MBytes3.7Mbits/sec11.223

79.4-83.5sec0.2MBytes0.3Mbits/sec2.5MBytes7.3Mbits/sec1.2MBytes3.3Mbits/sec10.9

83.5-86.1sec0.2MBytes0.6Mbits/sec2.5MBytes7.1Mbits/sec1.2MBytes4Mbits/sec11.7

86.1-89.0sec0.2MBytes0.6Mbits/sec2.5MBytes6.7Mbits/sec1.7MBytes4.2Mbits/sec11.5

89.0-92.0sec0.2MBytes0.5Mbits/sec2.3MBytes6.7Mbits/sec1.5MBytes4Mbits/sec11.2

92.0-95.1sec0.2MBytes0.5Mbits/sec2.5MBytes7.4Mbits/sec1.2MBytes3.6Mbits/sec11.5

95.1-96.4sec0.6MBytes3.6Mbits/sec3.1MBytes8.4Mbits/sec12

96.4-100.8sec0.4MBytes0.7Mbits/sec3.7MBytes11.1Mbits/sec11.8

100.8-106.2sec0.2MBytes0.3Mbits/sec4.1MBytes11.1Mbits/sec11.4

106.2-106.2sec0MBytes0.137Mbits/sec3.9MBytes11.3Mbits/sec11.437

106.2-112.7sec0.2MBytes0.2Mbits/sec3.9MBytes11Mbits/sec11.2

112.7-112.7sec0MBytes0.163Mbits/sec3.9MBytes11Mbits/sec11.163

112.7-122.8sec0.8MBytes0.6Mbits/sec3.5MBytes9.5Mbits/sec10.1

122.8-122.8sec0MBytes0.153Mbits/sec3.9MBytes11.4Mbits/sec11.553

122.8-122.8sec0MBytes0.237Mbits/sec4.1MBytes11.3Mbits/sec11.537

122.8-126.4sec0.2MBytes0.4Mbits/sec3.9MBytes11Mbits/sec11.4

126.4-126.4sec0MBytes0.161Mbits/sec3.7MBytes10.5Mbits/sec10.661

126.4-133.8sec0.4MBytes0.4Mbits/sec3.9MBytes11.1Mbits/sec11.5

133.8-133.8sec0MBytes0.151Mbits/sec3.9MBytes11Mbits/sec11.151

133.8-140.0sec0.2MBytes0.3Mbits/sec3.9MBytes11.1Mbits/sec11.4

140.0-140.0sec0MBytes0.16Mbits/sec4.1MBytes11.3Mbits/sec11.46

140.0-144.3sec0.2MBytes0.4Mbits/sec3.9MBytes11.1Mbits/sec11.5

144.3-144.3sec0MBytes0.159Mbits/sec3.5MBytes9.4Mbits/sec9.559

144.3-149.2sec0.8MBytes1.3Mbits/sec3.7MBytes11.1Mbits/sec12.4

149.2-150.7sec0.6MBytes3.4Mbits/sec3.3MBytes9.3Mbits/sec12.7

150.7-153.1sec3.3MBytes11.2Mbits/sec11.2

153.1-156.1sec3.9MBytes11.3Mbits/sec11.3

156.1-159.0sec4MBytes11.3Mbits/sec11.3

159.0-162.1sec4.1MBytes11.1Mbits/sec11.1

162.1-165.1sec3.1MBytes8.8Mbits/sec8.8

165.1-168.0sec4.1MBytes11.8Mbits/sec11.8

168.0-171.1sec4MBytes10.7Mbits/sec10.7

171.1-174.0sec3.9MBytes11.2Mbits/sec11.2

174.0-177.1sec4.1MBytes11.3Mbits/sec11.3

177.1-180.0sec3.9MBytes11.2Mbits/sec11.2

qbss

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QBSS

BE

Pri

Total

Time, in sec

MBit per sec

Throughput Test, Three classes, Trial 2Dave Hartzell, EROS Data Center

AnalysisFor the most part, we tend to see more lower priority (Scavenger Service) traffic.

When H.323 video runs for distance education, we do see IP Prec 5.

There have been no complains regarding the quality of the video thus far.

Thanks.