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host1:default(config)#router bgp 100

host1:default(config-router)#address-family ipv4 unicast vrf ospf2

7. Redistribute OSPF routes into BGP.

host1:default(config-router)#redistribute ospf

domain-id

• Use to set the OSPF domain ID for an OSPF VRF on a PE router; the default value is

zero.

• Use the same domain ID for all OSPF VRFs in a given OSPF domain.

• When the value is zero, MP-BGP does not attach an OSPF domain identifier attribute

when it converts an OSPF route to an MP-BGP route to cross the BGP/MPLS VPN.

• Example

host1:default:ospf2(config-router)#domain-id 45

• Use the no version to restore the default value.

• See domain-id.

domain-tag

• Use to set the VPN route tag for an OSPF VRF on a PE router.

• The default value is a 32-bit number based on the AS number of the BGP/MPLS VPN

backbone, with the first 16 bits set to 1110 0000 0000 0000, followed by the 16 bits

representing the AS number.

• Example

host1:default:ospf2(config-router)#domain-tag 1200

• Use the no version to restore the default value.

• See domain-tag.

Configuring VPLS

You can configure one or more instances of the Virtual Private LAN Service (VPLS),

referred to as VPLS instances, on the router. VPLS is a BGP-MPLS application that has

much in common with BGP/MPLS VPNs. VPLS employs a layer 2 virtual private network

(VPN) to connect multiple individual LANs across a service provider’s MPLS core network.

The geographically dispersed multiple LANs functions as a single virtual LAN.

For details about configuring and using VPLS, see “Configuring VPLS” on page 589.

Configuring L2VPNs

You can configure one or more instances of a Layer 2 Virtual Private Network (L2VPN),

referred to as L2VPN instances, on the router. An L2VPN, sometimes referred to as Virtual

Private Wire Service (VPWS), is a BGP-MPLS application that has much in common with

BGP/MPLS VPNs. L2VPNs employ layer 2 services over MPLS to build a topology of

JunosE 11.2.x BGP and MPLS Configuration Guide

Juniper JUNOSE 11.2.X BGP AND MPLS User Manual

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