Side_1_360

only best effort packets are lost in the core. All

losses for better classes occur in the MRPs and as

all discarded packets are counted, loss measure-

ment is accurate. We cannot have losses in other

routers than the first MRP for any class better

than best effort since there is an RSVP pipe and

our RED algorithm does not allow more than

reserved bandwidth to the pipe. We also have an

admission control before the RED, so that if it

works perfectly, we would not discard any pack-

ets at all. Unfortunately, the admission control

cannot work perfectly as we do not have a source

traffic descriptor which the source would respect.

We must assume that the admission control fails

sometimes, but the RED per class will not fail.

By monitoring the loss ratio, we can better adjust

the admission control also.

Premium Class (Pr.C.) Basic Class (B.C) Processor load (%)

Av. Delay Av. Jitter Av. Delay Av. Jitter MRP A MRP B

(ms) (ms) (ms) (ms)

6.45 32.96 9.14 33.94 56.17 57.33

7.98 33.28 9.79 43.37 54.67 52.50

7.48 35.98 10.61 35.64 50.50 50.83

8.14 30.24 11.47 40.04 58.00 57.15

6.38 33.019 9.14 38.70 48.31 58.67

7.90 29.16 10.06 43.41 52.65 56.33

7.67 36.15 10.016 23.25 40.15 59.40

8.56 34.11 11.19 32.73 46.14 58.33

* 7.57 * 33.11 * 10.18 * 36.38 * 50.82 * 56.33

10.09 35.20 11.62 40.33 56.00 70.33

8.08 33.25 10.69 43.42 60.50 65.33

9.94 32.30 9.75 41.53 63.17 76.67

8.74 36.34 11.82 43.63 61.83 73.50

7.53 35.39 12.90 45.74 66.64 58.33

9.05 34.45 14.98 47.86 70.33 80.17

8.24 37.50 12.06 48.89 58.67 76.50

9.06 39.56 15.15 47.00 65.68 81.67

* 8.84 * 35.50 * 12.38 * 44.80 * 62.85 * 66.06

10.99 41.14 18.12 67.17 71.75 87.85

7.55 35.18 17.15 57.27 82.17 90.15

8.04 38.23 14.18 64.31 85.45 99.67

9.66 39.30 15.41 62.35 80.50 63.17

10.37 38.38 16.61 62.39 87.50 80.83

8.13 37.47 16.71 59.44 91.67 87.50

9.93 37.53 17.64 63.48 92.63 90.33

10.77 38.64 15.58 66.58 87.73 86.33

Table 4 Management Test 9.43 38.23 16.43 65.74 87.17 93.99
Results

1 stSlot

(16 min)

Pr.C –

6 X 512

kbit/s

B.C –

4 X 256

kbit/s

2 ndSlot

(16 min)

Pr.C –

6 X 512

kbit/s

B.C –

4 X 256

kbit/s

BE –

5 Mbit/s

3 rdSlot

(16 min)

Pr.C –

6 X 512

kbit/s

B.C –

4 X 256

kbit/s