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Example: Configuring Virtual Channels

This configuration creates four virtual channels on the interface t3-1/0/0.0. Three of them (branch1-vc, branch2-vc, and branch3-vc) are shaped to 1.5 Mbps. The fourth virtual channel is the default (default-vc), and it is not shaped, so it can use the full interface bandwidth. The output filter on the interface sends all traffic with a destination address matching 192.168.10.0/24 to branch1-vc, and similar configurations are set for branch2-vc and branch3-vc. Traffic not matching any of the addresses goes to the default, unshaped virtual channel.

class-of-service {
interfaces {
t3-1/0/0 {
unit 0 {
virtual-channel-group wan-vc-group;
}
}
}
virtual-channels {
branch1-vc;
branch2-vc;
branch3-vc;
default-vc;
}
virtual-channel-groups {
wan-vc-group {
branch1-vc {
scheduler-map interface-global;
shaping-rate 1.5m;
}
branch2-vc {
scheduler-map interface-global;
shaping-rate 1.5m;
}
branch3-vc {
scheduler-map interface-global;
shaping-rate 1.5m;
}
default-vc {
scheduler-map interface-global;
default;
}
}
}
}
firewall {
family inet {
filter choose-vc {
term branch1 {
from {
destination 192.168.10.0/24;
}
then {
accept;
virtual-channel branch1-vc;
}
}
term branch2 {
from {
destination 192.168.11.0/24;
}
then {
accept;
virtual-channel branch2-vc;
}
}
term branch3 {
from {
destination 192.168.12.0/24;
}
then {
accept;
virtual-channel branch3-vc;
}
}
term default {
then {
accept;
}
}
}
}
}
 
interfaces {
t3-1/0/0 {
per-unit-scheduler;
unit 0 {
family inet {
filter output choose-vc;
}
}
}
}

 

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