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Configuring IBGP on the PE Routers

On the PE routers, configure an internal BGP (IBGP) session with the following parameters:

Layer 2 VPN—To indicate that the IBGP session is for a Layer 2 VPN, include the family l2vpn statement.
Local address—The IP address in the local-address statement is the same as the address configured in the to statement at the [edit protocols mpls label-switched-path lsp-path-name] hierarchy level on the remote PE router. The IBGP session for Layer 2 VPNs runs through this address.
Neighbor address—Include the neighbor statement, specifying the IP address of the neighboring PE router.

On Router A, configure IBGP:



[edit]
protocols {


bgp {
import match-all;
export match-all;


group pe-pe {
type internal;


neighbor 192.168.37.5 {
local-address 192.168.37.1;


family l2vpn {
signaling;
}


}




neighbor 192.168.37.10 {
local-address 192.168.37.1;


family l2vpn {
signaling;
}


}


}


}


}

On Router B, configure IBGP:



[edit]
protocols {


bgp {
local-address 192.168.37.5;
import match-all;
export match-all;


group pe-pe {
type internal;


neighbor 192.168.37.1 {
local-address 192.168.37.5;


family l2vpn {
signaling;
}


}




neighbor 192.168.37.10 {
local-address 192.168.37.5;


family l2vpn {
signaling;
}


}


}


}


}

On Router C, configure IBGP:



[edit]
protocols {


bgp {
local-address 192.168.37.10;
import match-all;
export match-all;


group pe-pe {
type internal;


neighbor 192.168.37.1 {
local-address 192.168.37.10;


family l2vpn {
signaling;
}


}




neighbor 192.168.37.5 {
local-address 192.168.37.10;


family l2vpn {
signaling;
}


}


}


}


}

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