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Riverstone Networks RS Switch Router User Guide Release 8.0 8-13
ATM Configuration Guide Traffic Management
Configuring Virtual Channels Groups (OC-12)
If the RS’s in Figure 8-1 were connected through ATM OC-12 line cards, you would use VC groups to manage the
traffic. Following are the steps and commands for configuring RS1 in the example:
Create the virtual channels.
atm create vcl port at.1.1.0.100
atm create vcl port at.1.1.0.101
atm create vcl port at.1.1.0.102
atm create vcl port at.1.1.0.103
Create a virtual channel group ‘vg.1’ on slot number 1 of RS1.
atm create vcgroup vg.1 slot 1
Add the 4 virtual channels into the VC group. This step also identifies the priority level for each
of the 4 virtual channels within the group.
atm add vcl at.1.1.0.100 to vg.1 priority low
atm add vcl at.1.1.0.101 to vg.1 priority medium
atm add vcl at.1.1.0.102 to vg.1 priority high
atm add vcl at.1.1.0.103 to vg.1 priority control
Configure an IP address for the VC group.
interface create ip vcg1 address-netmask 100.0.0.1/24 port vg.1
Configure a static IP route to the 3 different clients, specifying the VC group interface as the
gateway.
ip add route 201.0.0.1/24 gateway 100.0.0.2/24
ip add route 202.0.0.1/24 gateway 100.0.0.2/24
ip add route 203.0.0.1/24 gateway 100.0.0.2/24
Set the priority levels for the different flows on RS1. This step is necessary in differentiating the
priority levels of traffic data intended for the different clients. Note that control packets are
assigned to control priority levels by default.
qos set ip to_client1 high 200.0.0.1/24 201.0.0.1/24
qos set ip to_client2 medium 200.0.0.1/24 202.0.0.1/24
qos set ip to_client3 low 200.0.0.1/24 203.0.0.1/24