On 13/06/13 12:03, Sebastian Wiesinger wrote:
Hello,

as I'm hearing conflicting information regarding bootp helper on MX
routers in a vrf routing-instance, has anyone a working configuration?

What I need:

Forward DHCP broadcast requests from one vrf interface to a central
DHCP server in the same VRF (classical bootp helper functionality). I
don't want bootp helper on *every* interface, just a few.

It's a J-series, not MX, but should be the same:

forwarding-options {
    helpers {
        bootp {
            interface {
                ge-0/0/2.2021 {
                    server x.x.x.x routing-instance BLAH;

...and


routing-instances {
    BLAH {
        instance-type vrf;
        interface ge-0/0/2.2021;

Basically, you have to put the routing-instance on the server option, matching the routing instance of the interface.
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