Related Topics
• How to Implement MPLS Layer 3 VPNs, on page 8
For more details on configuring the routing protocol, see Routing Configuration Guide for Cisco NCS 540
Series Routers and BGP Configuration Guide for Cisco NCS 540 Series Routers.
Configure MPLS in the Core
To enable MPLS on all routers in the core, you must configure a Label Distribution Protocol (LDP).
You can also transport MPLS L3VPN services using segment routing in the core. For details, see Configure
Segment Routing in MPLS Core, on page 48.
Configuration Example
This example lists the steps to configure LDP in MPLS core.
Router-PE1#configure
Router-PE1(config)#mpls ldp
Router-PE1(config-ldp)#router-id 13.13.13.1
Router-PE1(config-ldp)#address-family ipv4
Router-PE1(config-ldp-af)#exit
Router-PE1(config-ldp)#interface HundredGigE0/0/1/0
Router-PE1(config-ldp)#commit
Repeat this configuration in PE2 and P routers as well.
Running Configuration
mpls ldp
router-id 13.13.13.1
address-family ipv4
!
interface HundredGigE0/0/1/0
!
!
Verification
• Verify that the neighbor (16.16.16.1) is UP through the core interface:
Router-PE1#show mpls ldp neighbor
Peer LDP Identifier: 16.16.16.1:0
TCP connection: 16.16.16.1:47619 - 13.13.13.1:646
Graceful Restart: No
Session Holdtime: 180 sec
State: Oper; Msgs sent/rcvd: 40395/35976; Downstream-Unsolicited
Up time: 2w2d
LDP Discovery Sources:
IPv4: (1)
HundredGigE0/0/1/0
IPv6: (0)
Addresses bound to this peer:
IPv4: (6)
10.64.98.32 87.0.0.2 88.88.88.14 50.50.50.50
L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x
11
MPLS L3VPN Overview
Configure MPLS in the Core
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