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which LDP Layer 2 circuit configuration on PE1 maps tra…

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Referring to the exhibit, which LDP Layer 2 circuit configuration on PE1 maps traffic to an LSP destined to the
secondary loopback address of PE2?

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A.
[edit protocols l2circuit]
user@PE1# show
neighbor 10.10.10.2 {
interface ge-1/1/1.1 {
psn-tunnel-endpoint 10.10.10.1;
virtual-circuit-id 1;
encapsulation-type ethernet-vlan;}
}

B.
[edit protocols l2circuit]
user@PE1# show
neighbor 10.10.10.2 {
interface ge-1/1/1.1 {
virtual-circuit-id 1;
encapsulation-type ethernet-vlan;
}
}

C.
[edit protocols l2circuit]
user@PE1# show
neighbor 10.10.10.2 {
interface ge-1/1/1.1 {
psn-tunnel-endpoint 10.10.10.2;
virtual-circuit-id 1;
encapsulation-type ethernet-vlan;
}
}

D.
[edit protocols l2circuit]
user@PE1# show
neighbor 10.10.10.1 {
interface ge-1/1/1.1 {
psn-tunnel-endpoint 10.10.10.2;
virtual-circuit-id 1;
encapsulation-type ethernet-vlan;
}
}

4 Comments on “which LDP Layer 2 circuit configuration on PE1 maps tra…

  1. Chuck says:

    D, final answer.

    Since it is an LDP circuit, You must run LDP on the lo0.0 (primary) interface for extended neighbor discovery to function correctly. Therefore, neighbor must be discovered on 10.10.10.1

    psn-tunnel-endpoint is used only to Specify the endpoint of the packet switched network (PSN) tunnel on the remote PE router.




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