On Wed, Jul 28, 2010 at 11:10:12PM +0300, Amos Rosenboim wrote: > Hello All, > > I'm trying to configure an inter provider LDP based L2VPN between a > Juniper network and a Cisco network. > The topology is roughly as follows: > > Cisco PE-----Cisco P------Cisco P------Cisco ASBR------Juniper > ASBR-------Juniper P-------Juniper P-------Juniper PE. > > In order to achieve this I need to establish the tunnel LSP between > the PEs in both networks and than establish the LDP signaled VC on top > of the tunnel LSP. > To establish the tunnel LSP the two ASBRs exchange IPv4+label (or > labeled unicast in Junos language ) routes between them and advertise > to each other the loopback IP of the PEs. > On the Cisco ASBR we simply redistribute the Juniper PE loopback into > the igp and thus the PE has both a route and a label to reach the > Juniper PE > However on the Juniper side I cannot do the same. > My question is what is the alternative method to achieve the same > result on the Juniper side? > The solution I can think of is to use labeled unicast routes over iBGP > between the Juniper ASBR and the Juniper PE but I'm not sure it will > work (the Juniper network is not under my control so I cannot test).
At my past work we did inter-AS l2circuits exactly that way - eBGP with labeled-unicast between AS (one ASBR is Juniper, other is Cisco), then iBGP with labeled-unicast inside. Works fine. One of reasons of not to redistribute eBGP into OSPF is a lots of horror stories on what happens when you're entering router ospf NNNN no redistrubute bgp route-map LOOPBACKS-TO-BE-REDISTRIBUTED on Cisco routers. > If this is the solution than should the Juniper P routers also get > this route or would the Juniper PE impose two labels for the address > of the Cisco PE (the label derived from BGP for the Cisco PE + the > label to reach the Juniper ASBR) IIRC, ingress PE will have to push three labels - internal label to reach ASBR, then label to PE and then l2circuit label. _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
