On Sunday, December 25, 2011 06:22:18 PM vaibhava varma wrote: > I am working on a requirement to enable the MPLS Backbone > with MPLS TE in such a way that I have LSPs running from > PE-P routers and P-PE routers to avoid full mesh of > LSPs.
So you mean H-LSP's (RFC's 4206, 6107)
> I can not make it working with RSVP as I think I need to
> enable LDP on the RSVP TE Tunnel but unable to find a
> way to do so..
You mean LDPoRSVP (LDP Tunneling, in Juniper speak):
tinka@lab# show groups mpls-group
protocols {
mpls {
icmp-tunneling;
label-switched-path <*> {
ldp-tunneling;
least-fill;
node-link-protection;
adaptive;
}
interface <xe-*>;
interface <ge-*>;
interface <ae*>;
}
}
{master}[edit]
tinka@lab#
You're interested in the 'ldp-tunneling' command as noted
above.
> The MPLS Backbone has separate dedicated
> VPNv4 RRs . On RRs and PEs I have used a Discard Default
> Route under inet.3 which helps to reflect the vpnv4
> routes from RR and accept them on PEs.
Why don't you consider the installation of the IGP routes
toward the BGP next-hops into 'inet.3' and 'inet6.3'
instead? We do the same (as we don't run MPLS on our
dedicated route reflectors) as below (you're interested in
the 'rib-group' piece mostly):
tinka@lab# show groups isis-group
protocols {
isis {
lsp-lifetime 65535;
ignore-attached-bit;
rib-group inet IGP-RIB;
topologies ipv6-unicast;
overload;
level 1 disable;
level 2 {
authentication-key "<hidden>"; ## SECRET-DATA
authentication-type md5;
wide-metrics-only;
}
interface lo0.0 {
passive;
}
interface <ge-*>;
}
}
{master}[edit]
tinka@lab#
tinka@lab# show routing-options rib-groups
IGP-RIB {
import-rib [ inet.0 inet.3 inet6.3 ];
}
{master}[edit]
tinka@lab#
That should sort you out on the route reflectors so you
don't have to hassle with static default routes.
> Now how can I solve the issue of passing MPLS VPN Traffic
> across broken LSPs in the backbone..
Just a question - have you not considered just running LDP,
or RSVP-TE a must?
Cheers,
Mark.
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