Riverstone Networks WICT1-12 - Manual (Page 153)

Riverstone Networks RS Switch Router User Guide Release 8.0 8-19
ATM Configuration Guide Routing ATM Traffic
Figure 8-3 Routing ATM traffic configuration example
Suppose you are a network administrator in charge of managing a network with two client groups: Subnet A and
Subnet B. These two client groups have very different bandwidth needs and requirements for their respective users.
Subnet A consists of users who need access to a high bandwidth connection, able to support video conferencing.
Subnet B consists of users who require less stringent requirements and are mainly concerned with email and server
backup type traffic.
Configuration is done in two steps. The first step is to configure the network for traffic from Subnet A and Subnet B
to Subnet C. The second step is to configure the network for traffic from Subnet C to Subnet A and Subnet B and assign
ACLs to place subnets on correct VCLs. Now all traffic between Subnet A and Subnet C travels over the 20 Mbit VCL,
while all traffic between Subnet B and Subnet C travels over the 100 Mbit VCL.
Subnet A Subnet B
20.1.1.X/24 10.1.1.X/24
ATM Network
et 2.3 et 2.4
at 4.2
30.1.1.127/24 40.1.1.127/24
VPI = 0, VCI =100 VPI = 0, VCi = 101
40.1.1.128/24
VPI = 0, VCi = 101
30.1.1.128/24
VPI = 0, VCI =100
Subnet C
50.1.1.X/24
CBR, 100 Mbit UBR, 20 Mbit
RS1
RS2
at 3.1
et 5.1
UBR, 20 Mbit CBR, 100 Mbit
10.1.1.130/24
50.1.1.130/24
20.1.1.130/24