Juniper JUNOSE 11.2.X BGP AND MPLS User Manual

In addition to the basic configuration tasks, you might need to perform other LDP or
RSVP-TE configuration tasks.
To configure LDP and RSVP-TE, depending on your network topology and needs:
•
Configure LDP features depending on your network design.
See “Additional LDP Configuration Tasks” on page 288.
•
Configure RSVP-TE features depending on your network design.
See “Additional RSVP-TE Configuration Tasks” on page 293.
MPLS Global Configuration Tasks
Complete these tasks to configure a virtual router as an LSR. You perform these
commands in Global Configuration mode. The following sequence is arbitrary; you can
perform these tasks in any order.
Your choice of label distribution protocol determines whether the LDP or RSVP-TE global
tasks are appropriate for your network design.
MPLS global configuration tasks include the following sets of tasks:
•
MPLS Global Tasks on page 277
•
LDP Global Tasks on page 278
•
RSVP-TE Global Tasks on page 279
MPLS Global Tasks
In a typical network, you perform only the first task. You might also perform the optional
configuration tasks, but typically do not need to do so.
1. Enable MPLS on a virtual router.
host1(config)#mpls
2. (Optional) Configure the time-to-live field placed in the MPLS header when a label
is first added to an IP packet.
host1(config)#mpls ip propagate-ttl forwarded
3. (Optional) Configure the tunneling model for differentiated services. See “Configuring
MPLS and Differentiated Services” on page 303 for more information and command
descriptions.
host1(config)#mpls tunnel-model uniform
4. (Optional) Specify whether to use the TOS value (the default condition) or the UPC
value of the packet as the value of the EXP bits when the router acts as an LER.
host1(config)#mpls copy-upc-to-exp
5. (Optional) Specify whether the EXP bits for VPN MPLS labels can be modified by
EXP bit mapping or by policy for differentiated services.
host1(config)#mpls preserve-vpn-exp
277Copyright © 2010, Juniper Networks, Inc.
Chapter 4: Configuring MPLS

Juniper JUNOSE 11.2.X BGP AND MPLS Specifications

General

Brand	Juniper
Model	JUNOSE 11.2.X BGP AND MPLS
Category	Software
Language	English