Well, if your IGP is already established, then you just need to select
which signaling protocol you want to use. Juniper supports both LDP and RSVP.
You'll get automatic LSP creation with LDP, but with RSVP, you get Traffic
Engineering, named LSPs, Fast ReRoute, etc.
You
can also go with a hybrid LDP over RSVP solution, if you so
choose.
For
grins, let's assume you go with RSVP. We have to configure a couple of steps
to get MPLS working:
1.
Enable family MPLS on the backbone interface (facing your
core)
2.
Enable the RSVP protocol
3.
Enable the MPLS protocol
4.
Build the LSP
For
the first step, just enable family mpls like you would family inet. That
enables MPLS support for that interface (e.g., set interface so-0/0/0 unit 0
family mpls)
For the second step, under protocols rsvp, enable each interface
individually, or better yet, enable all, then specifically disable
fxp0.0
protocols {
rsvp
{
interface
all;
interface fxp0.0
{
disable;
}
}
}
Same
thing for step #3. You'll also see the LSP config here:
protocols {
mpls
{
label-switched-path TO-ROUTER_Z
{
to
xyz.xyz.xyz.xyz; <-- loopback of remote
node
}
interface
all;
}
This
is a pretty basic config, but it should get you started. Remember, LSPs
are unidirectional and only configured on the Ingress router, so you'll
need to configure an LSP on Router_Z pointing back to the loopback IP of this
router (Router_A).
Hope
this helps.
-Jeff
-----Original Message-----
From:
Hernan Hevia [mailto:hhevia@ntzn.com]
Sent: Thursday, October 14,
2004 8:57 AM
To: Richmond, Jeff (ELI);
mpls-ops@mplsrc.com
Subject: RE: [MPLS-OPS]: Juniper
MPLS
Jeff,
I'm thinking of starting with a simple LSP in the Juniper network,
then I'll try to go RFC2547.
Any practical example on how to do that? What should I be aware of if
I configure MPLS on a Juniper that is already in service with BGP, a couple
of routing instances, etc? I don't want to jeopardize inet.0 configuring
MPLS.
Thank you very much in advance.
Regards
Hernán
Hernán,
There are a
number of ways to deploy MPLS, so you'll probably want to narrow your
focus down a bit. What exactly are you trying to accomplish? If it is just
setting up an LSP from point A to point Z, well, that is pretty simple. If
you are wanting to setup 2547 VPNs, that isn't difficult either, but
requires a bit more work and understanding of MPLS and BGP, for
example.
Regards,
-Jeff
Hi,
I'm about to
start working on an MPLS project using Juniper
routers.
Could anyone
provide good literature with examples, tips and tricks, etc, besides
what is included in Junos documentation?
Thanks in
advance!
Hernán