[j-nsp] Can I do "dumb" Q-in-Q switching on Juniper MX?

[Vincent De Keyzer]

Hi,

that one I think I can answer - we just had to do this recently, and used
CCC (
http://www.juniper.net/techpubs/en_US/junos10.0/information-products/topic-collections/config-guide-mpls-applications/mpls-configuring-layer-2-switching-cross-connects-using-ccc.html
).

With the following, frames are tagged with VLAN 2001 on ge-0/1/1, and
untagged on ge-0/1/9:

interfaces {
    ge-0/1/1 {
        vlan-tagging;
        mtu 4000;
        encapsulation vlan-ccc;
        unit 2001 {
            encapsulation vlan-ccc;
            vlan-id 2001;
        }
    }
    ge-0/1/9 {
        speed 100m;
        link-mode full-duplex;
        encapsulation ethernet-ccc;
        gigether-options {
            no-auto-negotiation;
        }
        unit 0 {
            input-vlan-map {
                push;
                tag-protocol-id 0x8100;
                vlan-id 2001;
            }
            output-vlan-map pop;
            family ccc;
        }
    }
protocols {
    connections {
        interface-switch ccc {
            interface ge-0/1/1.2001;
            interface ge-0/1/9.0;
        }
    }
}

HTH,

Vincent


On 1 July 2013 12:11, Sebastian Wiesinger <juniper-nsp at ml.karotte.org>wrote:

> Hello,
>
> I need to do a sort of "dumb" Q-in-Q on a MX box. What I want from
> the MX is:
>
> Take alle VLAN tagged frames on an Port (CE-facing) and switch
> them to another interface (Core-Facing). On the core-facing interface
> push VLAN 42 on the frames (Q-in-Q).
>
> When frames arrive on the core-facing IF, remove vlan tag 42 and
> switch them to the CE.
>
> I don't need mac-learning for this as this is just p2p switching.
>
> (How) is that achievable?
>
> Regards
>
> Sebastian
>
>
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