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host1:vr1#clear ip routes vrf vr3 *

• There is no no version.

• See clear ip routes.

Enabling VRF–to–VR Peering

In some circumstances you might want a CE router, which connects to the PE router by

means of a VRF, to be able to establish an EBGP peering session directly with the parent

VR in which the VRF has been configured. The global instance of BGP for the PE router

runs in the parent VR to exchange VPN routes with its peers by means of internal or

external MP-BGP. BGP could also be learning IPv4 unicast Internet routes from one or

more of its core-facing, internal or external BGP peers.

In the context of the VRF, you can use the ip route parent-router command to add a

static host route to a stable interface (typically a loopback interface) in the parent VR

by way of a hidden VRF-internal interface.

host1(config)#virtual-router PE1

host1:PE1(config)#interface loopback 1

host1:PE1(config-if)#ip address 10.20.20.2 255.255.255.255

host1:PE1(config-if)#exit

host1:PE1(config)#virtual-router :PE11

host1:PE1:PE11(config)#ip route parent-router loopback 1

In this example, assume that the global instance of BGP for the PE router runs in the

parent VR, PE 1, to exchange VPN routes with its peers by means of internal or external

MP-BGP. BGP can also be learning IPv4 unicast Internet routes from one or more of its

core-facing, internal or external BGP peers.

By virtue of the static route configured in VRF PE 11, a CE router that connects to that VRF

can establish an EBGP session directly to loopback 1 (10.20.20.2) in the parent VR, PE 1.

The same PE router can therefore provide both VPN and Internet access to any attached

CE routers.

You can display the static route to the parent VR with the show ip route and show ip

static commands, as in the following examples:

host1:PE1:PE11#show ip route

Prefix/Length Type Next Hop Dist/Met Intf

------------------ ------- ----------------- ------------- ---------------

10.20.20.2/32 Static 0.0.0.0[V:PE1] 1/0 vrf-internal3

host1:PE1:PE11#show ip static

Prefix/Length Next Hop Met Dist Tag Intf

10.20.20.2/32 0.0.0.0 0 1 0 vrf-internal3

ip route

• Use to establish a static route in a VRF to a remote interface in the parent VR.

• The specified interface must be preexisting and have an alias assigned with the

description command.

JunosE 11.2.x BGP and MPLS Configuration Guide

Juniper JUNOSE 11.2.X BGP AND MPLS User Manual

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