HP 7102dl - ProCurve Secure Router Configuration Manual page 372

Setting Up Quality of Service
Configuring CBWFQ
N o t e
8-22
This ToS value is set by an application or device before the packet arrives on
the interface. Although the router can mark traffic with ToS values, these
values are generally used in the network to which the router forwards the
packet.
DiffServ defines four classes of AF PHB, each class receiving successively
better service. (The first subclass in an AF class receives better treatment
because it has a lower drop precedence.) You could configure four classes to
match four AF PHB and allocate each successive class relatively more band-
width. (See Table 8-7 for the DSCP for AF PHB.)
Table 8-7. Example of Assured Forwarding PHB
AF Class Drop Precedence
AF1 low
medium
high
AF2 low
medium
high
AF3 low
medium
high
AF4 low
medium
high
DSCP DiffServ Value
001010 10
001100 12
001110 14
010010 18
010100 20
010110 22
011010 26
011100 28
011110 30
100010 34
100100 36
100110 38