Number ToS Mode Programs Enabled1 IP Precedence 84-10-02 Priority – 0=Lowest ~ 7=Highest(ToS bits: 0~2)84-10-03 Delay – 0=Normal, 1=Low(Tos Bit: 3)84-10-04 Throughput – 0=Normal, 1=High(Tos Bit: 4)84-10-05 Reliability – 0=Normal, 1=High(ToS Bit: 5)ToS Bit 7: Always 0Typically, only one of bits 3~6 is set to 1 and the other three bits are set to 0. For example,to maximize route reliability, set 84-10-05 to 1 and leave 84-10-03, 84-10-04 and 84-10-06at 0 (default).2 Diffserv 84-10-07 DSCP Value in Decimals: 0~63(ToS bits: 0~5)ToS Bits 6 & 7 are not evaluated6.7.4 Configuration Examples for Classification and QueuingFigure 6-6 Common Network with Cisco Router on page 6-20 shows a typical network scenario andan example of a Cisco router configuration.This document provides a general description of VoIP technology, but it does not discuss individualmanufacturer solutions. This sample configuration is provided as a common scenario. It is a good exampleof how QoS can be implemented on a router.NEC does not endorse or provide support on any third party equipment unless it is supplied by NEC.ChassisRouter100MbpsDallas Fort Worth192.168.1.1 192.168.2.1PC192.168.1.50PC192.168.2.50100Mbps256KbpsPrivate Circuit(Leased Line)100Mbps100Mbps100Mbps100MbpsRouterTelephone System192.168.1.10Telephone System192.168.2.10ChassisData Switch Data Switch10.0.0.1 10.0.0.2Figure 6-6 Common Network with Cisco RouterSee Table 6-6 Cisco Router Configuration Example on page 6-21 for configuration information aboutthe Cisco 2621 router. A description of key commands follows.SL2100 ISSUE 1.06-20 Network Design Considerations
