Activating Traffic Engineering On The Router - Cisco 10000 Series Configuration Manual

Chapter 20 Configuring Quality of Service for MPLS Traffic

Activating Traffic Engineering on the Router

To globally activate traffic engineering on the router, enter the following commands beginning in global
configuration mode:
Command
Step 1
Router(config)# mpls traffic-eng tunnels
Step 2
Router(config)# router ospf
or
Router(config)# router isis
Step 3
Router(config-router)# network
network-entity-title
Step 4
Router(config-router)# metric-style wide
[transition] [{level-1 | level-2 |
level-1-2}]
Step 5
Router(config-router)# is-type {level-1 |
level-1-2 | level-2-only}
Step 6
Router(config-router)# mpls traffic-eng
{level-1 | level-2}
OL-7433-09
Purpose
Enables MPLS traffic engineering tunnel signaling on the router.
Invokes the OSPF routing process for IP and enters router
configuration mode. Continue with Step 9.
Invokes the IS-IS routing process and enters router configuration
mode. Continue with Step 3.
Specifies the IS-IS network entity title (NET) for the routing
process.
network-entity-title specifies the area address and the system ID
for an IS-IS routing process. You can specify an address or a name
for network-entity-title.
Enables the router to generate and accept IS-IS only new-style
type, length, and value (TLV) objects.
Configures the IS-IS level at which the Cisco IOS software
operates.
When you specify level-1, the router acts as a station router and
learns about destinations inside its area. For interarea routing
information, the router depends on the closest level-1-2 (L1L2)
router.
When you specify level-1-2, the router acts as both a station
router and an area router. The router has one link state database
(LSDB) for destinations inside the area (L1 routing) and runs a
shortest path first (SPF) calculation to discover the area topology.
The router also has another LSDB with link state protocol (LSP)
packets of all other backbone (L2) routers and runs another SPF
calculation to discover the topology of the backbone, and the
existence of all other areas.
When you specify level-2-only, the router acts an area router only.
This router is part of the backbone and does not talk to L1-only
routers in its own area.
Configures the router to flood MPLS traffic engineering link
information into the IS-IS level you specify. The IS-IS level you
specify must be the same level you specified in the preceding step.
Cisco 10000 Series Router Quality of Service Configuration Guide
MPLS Traffic Engineering—DiffServ Aware
20-21