1. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-1 MPLS TE Overview Configuring MPLS TE on Cisco IOS Platforms

2. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-2 Outline Overview MPLS TE Configuration Road Map Enabling Device-Level MPLS TE Support Enabling MPLS TE Support in IS-IS Enabling MPLS TE Support in OSPF Enabling Basic MPLS TE on an Interface Creating and Configuring a Traffic Tunnel Mapping Traffic into Tunnels with Autoroute Summary

3. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-3 MPLS TE Configuration Road Map Use device supporting MPLS. –Implement ip cef global configuration command. Use IGP supporting MPLS TE. –OSPF –IS-IS Enable MPLS TE tunnels. –Configure mpls traffic-eng tunnels (global configuration mode). –Configure mpls traffic-eng tunnels (interface configuration mode). Create and configure traffic tunnels. Deploy traffic tunnels with autoroute.

4. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-4 ip cef router(config)# Enables IP CEF switching Enabling Device-Level MPLS TE Support mpls traffic-eng tunnels router(config)# Enables the MPLS TE tunnel feature on a device

5. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-5 Implementing Device-Level MPLS TE Support ip cef [distributed] mpls traffic-eng tunnels

6. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-6 Enabling MPLS TE Support in IS-IS mpls traffic-eng {level-1 | level-2} router(config-router)# Turns on MPLS traffic engineering for IS-IS Level 1 or Level 2 mpls traffic-eng router-id {interface} router(config-router)# Specifies the interface to be associated with the TE router identifier (also endpoint of a tunnel) metric-style wide router(config-router)# Configures a router to generate and accept only new-style TLV objects

7. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-7 Implementing MPLS TE Support in IS-IS ip cef mpls traffic-eng tunnels router isis mpls traffic-eng router-id Loopback0 mpls traffic-eng level-2 metric wide

8. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-8 Enabling MPLS TE Support in OSPF mpls traffic-eng area area-num router(config-router)# Turns on OSPF traffic engineering for the area mpls traffic-eng router-id interface router(config-router)# Specifies the interface to be associated with the TE router identifier (also endpoint of a tunnel)

9. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-9 Implementing MPLS TE Support in OSPF ip cef mpls traffic-eng tunnels router ospf 101 mpls traffic-eng router-id Loopback0 mpls traffic-eng area 0

10. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-10 ip rsvp bandwidth [interface-kbps [single-flow-kbps]] router(config-if)# Enables RSVP for IP on an interface and specify amount of bandwidth to be reserved Enabling Basic MPLS TE on an Interface mpls traffic-eng tunnels router(config-if)# Enables the MPLS TE tunnel feature on an interface mpls ip router(config-if)# Enables MPLS on an interface

11. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-11 Implementing Basic MPLS TE on an Interface ip cef mpls traffic-eng tunnels router isis mpls traffic-eng router-id Loopback0 mpls traffic-eng level-1 metric wide interface serial 0/0 mpls ip mpls traffic-eng tunnels ip rsvp bandwidth 128

12. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-12 ip unnumbered type number Enables IP on the interface, and brings it up without a unique IP address router(config-if)# Creating a Tunnel interface tunnel number router(config)# Configures a tunnel interface tunnel destination ip-address Specifies the destination for the tunnel The tunnel source command is not needed. router(config-if)#

13. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-13 Example: Creating a Tunnel Interface... interface tunnel 0 ip unnumbered loopback 0 tunnel destination 10.1.1.2

14. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-14 tunnel mpls traffic-eng bandwidth bandwidth Configures the requested bandwidth for the MPLS TE tunnel tunnel mode mpls traffic-eng Sets the tunnel encapsulation mode to MPLS TE Creating and Configuring a Traffic Tunnel router(config-if)# tunnel mpls traffic-eng priority setup-priority [hold- priority] Configures the setup and reservation priority for an MPLS TE tunnel

15. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-15 Creating and Configuring a Traffic Tunnel (Cont.) tunnel mpls traffic-eng path-option number {dynamic | explicit {name path-name | path-number}} [lockdown] router(config-if)# Configures the tunnel to use a named IP explicit path or a path dynamically calculated from the TE topology database ip explicit-path {name word | identifier number} [{enable | disable }] router(config)# Enters the subcommand mode for IP explicit paths and creates or modifies the specified path next-address ip-address router(cfg-ip-expl-path)# Specifies the next IP address in the explicit path

16. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-16 tunnel mpls traffic-eng autoroute announce router(config-if)# Causes the IGP to use the tunnel in its enhanced SPF Deploying Traffic Tunnels with Autoroute

17. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-17 Example: Configuring TE Options on a Tunnel Interface ip explicit-path name via_P1 enable next-address 10.1.1.12 next-address 10.1.1.2 interface tunnel 0 ip unnumbered Loopback0 tunnel destination 10.1.1.2 tunnel mode mpls traffic-eng tunnel mpls traffic-eng priority 3 3 tunnel mpls traffic-eng bandwidth 128 tunnel mpls traffic-eng path-option 1 explicit name via_P1 tunnel mpls traffic-eng autoroute announce

18. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-18 Summary Required tasks to implement TE in a MPLS VPN network include: –Enabling device-level MPLS TE support on PE and P routers –Enabling MPLS TE support in an IS-IS environment on PE and P routers –Enabling MPLS TE support in an OSPF environment on PE and P routers –Enabling MPLS TE on an interface on PE and P routers –Creating and configuring a traffic tunnel on ingress PE router –Enabling traffic tunnels with autoroute in ingress PE router

19. © 2006 Cisco Systems, Inc. All rights reserved. MPLS v2.28-19