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