> We need to pass 20 different vlans using only the 3 ones that carrier
> provide to us.
>
> First 10 vlans need to terminate in a L3 interface inside the router
> with an IP address.
So, assuming you use carrier (outer) VLAN 100 for this, something like
the following:
interfaces {
ge-0/0/0 {
flexible-vlan-tagging;
encapsulation flexible-ethernet-services;
unit 1 {
vlan-tags outer 100 inner 1;
family inet {
address ...
}
unit 2 {
vlan-tags outer 100 inner 2;
family inet {
address ...
}
...
}
}
> Other 10 we need to pop from the IQ2E interface and let it free using a
> L2 switch
Assuming you use carrier (outer) VLAN 200 for this, and the traffic is
sent out again on ge-0/1/0, using "interface-switch":
interfaces {
ge-0/0/0 {
flexible-vlan-tagging;
encapsulation flexible-ethernet-services;
unit 11 {
encapsulation vlan-ccc;
vlan-tags outer 200 inner 11;
input-vlan-map pop;
output-vlan-map push;
}
unit 12 {
encapsulation vlan-ccc;
vlan-tags outer 200 inner 12;
input-vlan-map pop;
output-vlan-map push;
}
...
}
}
interfaces {
ge-0/1/0 {
flexible-vlan-tagging;
encapsulation flexible-ethernet-services;
unit 11 {
encapsulation vlan-ccc;
vlan-id 11;
}
unit 12 {
encapsulation vlan-ccc;
vlan-id 12;
}
...
}
}
protocols {
connections {
interface-switch sw11 {
interface ge-0/0/0.11;
interface ge-0/1/0.11;
}
interface-switch sw12 {
interface ge-0/0/0.12;
interface ge-0/1/0.12;
}
...
}
}
As you can see a Juniper M7i isn't really well suited for L2
switching (the syntax is clumsy and the ports are expensice) - but
I believe it should work.
You'll need to set the interface MTU, and you'll also need MPLS
configuration on the router if you want to use interface-switch,
as far as I can remember. Might be simpler to connect a normal L2
switch to the trunk from the carrier, and use that switch to pop
off the outer VLAN.
Steinar Haug, Nethelp consulting, [email protected]
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