Nokia 7705 SAR - 3.2.2.1 QoS in MC-MLPPP

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Interface Configuration Guide 7705 SAR Interfaces

Edition: 01 3HE 11011 AAAC TQZZA 73

Figure 4 Original MLPPP Header Format

Figure 5 MC-MLPPP Header Format

The new MC-MLPPP header format uses the previously unused bits before the

sequence number as the class identifier to allow four distinct classes of service to be

identified.

3.2.2.1 QoS in MC-MLPPP

MC-MLPPP on the 7705 SAR supports scheduling based on multi-class

implementation. Instead of the standard profiled queue-type scheduling, an

MC-MLPPP encapsulated access port performs class-based traffic servicing. The

four MC-MLPPP classes are scheduled in a strict priority fashion, as shown in

Table 7.

20492

Address 0xff

BE00

Control 0x03

PID (H) 0x00 PID(L) 0x3D

Seq. Number

Fragment Data

.....

FCS

20491

Address 0xff

Control 0x03

PID (H) 0x00 PID(L) 0x3D

CLS

Seq. Number

Fragment Data

.....

FCS

Address 0xff

BE 00

Control 0x03

PID (H) 0x00 PID(L) 0x3D

CLS

Seq. Number

Sequence Number (L)

Fragment Data

.....

Short Sequence Number Fragment

Fromat MC-MLPPP Header

Long Sequence Number Fragment

Fromat MC-MLPPP Header

FCS

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Interface Configuration Guide1

Nokia 7705 SAR - 3.2.2.1 QoS in MC-MLPPP

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