HP 200 Series Services And Applications page 277

Table C. IP Types of Service
Type of Service (TOS) Delay
0 0
1 0
2 0
4 1
ROUTER
Figure 7. Routing Different Types of Service
When multiple types of service are supported by HP routers, routing
decisions can be based on the TOS requested in the header of a datagram.
Thus a separate set of routes can be calculated for each IP type of service.
Conceptually, this will allow networks where file transfers (using FTP) can
be routed over high-throughput routes such as satellite circuits, and time-
sensitive data (using Telnet) can be routed over low-delay terrestrial circuits
(see figure 7).
Type-of-Service-Routing
Throughput Reliability Service Description
0 0 Default
0 1 High Reliability
1 0 High Throughput
0 0 Low Delay
High
Throughput
Shortest Path
(FTP)
ROUTER
Low Delay
Shortest Path
(Telnet)
Routing with OSPF
3-83