20 October 2011, HWB
On Wednesday, 18 October 2011, a new Tier-based QoS paradigm was implemented on HPWREN backbone nodes after the following tests were done on a separate test network.
Tier |
DSCP |
Hex |
Class |
E-queue |
Threshold |
E-Alloc 1 |
E-Alloc 2 |
Testport |
3 |
CS1 |
0x20 |
default |
2 |
1 |
8 |
5 |
Undef. |
2 |
CS2 |
0x40 |
116 |
3 |
1 |
22 |
20 |
5003 |
1-B |
CS4 |
0x80 |
132 |
4 |
1 |
65 |
65 |
5002 |
1-E |
CS5 |
0xa0 |
140 |
1 |
1 |
5 |
10 |
5001 |
3560 testing with 95Mbps iperf UDP loads injected from a 1Gbps interface onto a 100Mbps substrate:
|
Egress buffer allocation 1 |
Egress buffer allocation 2 |
Port |
Single |
All |
partial |
partial |
partial |
partial |
Single |
All |
partial |
partial |
partial |
partial |
5004 |
28 |
7.5 |
- |
9.6 |
26 |
7.9 |
25 |
4.7 |
- |
5.9 |
21 |
5.2 |
5003 |
45 |
21 |
23 |
- |
38 |
22 |
40 |
19 |
20 |
- |
37 |
21 |
5002 |
96 |
63 |
68 |
80 |
- |
66 |
96 |
63 |
66 |
78 |
- |
70 |
5001 |
29 |
4.7 |
5 |
6 |
21 |
- |
25 |
9.4 |
9.9 |
12 |
26 |
- |
3550 testing with 20Mbps iperf UDP loads injected from a 100Mbps interface onto a 10Mbps substrate (“Egress buffer allocation 1 - Single” was tested at 95Mbps onto a 100Mbps substrate):
|
Egress buffer allocation 1 |
Egress buffer allocation 2 |
Port |
Single |
All |
partial |
partial |
partial |
partial |
Single |
All |
partial |
partial |
partial |
partial |
5004 |
95 |
0.75 |
- |
1 |
2.2 |
0.8 |
9.6 |
0.47 |
- |
1.2 |
1.4 |
0.5 |
5003 |
95 |
2.1 |
2.3 |
- |
6 |
2.2 |
9.6 |
1.9 |
2 |
- |
5.5 |
2.1 |
5002 |
95 |
6.2 |
6.8 |
8 |
- |
6.5 |
9.6 |
6.3 |
6.6 |
7.8 |
- |
6.9 |
5001 |
95 |
0.48 |
0.52 |
0.62 |
1.4 |
- |
9.6 |
0.94 |
1 |
1.2 |
2.7 |
- |
3550 CoS maps for HPWREN-internal connections:
E-queue |
CoS value |
2 |
0, 1 |
3 |
2, 3 |
4 |
4 |
1 |
5, 6, 7 |
Subsequent traffic was verified to contain the correct DSCP values per the access-list definitions.