[j-nsp] Forward non-standard UDP port broadcast packets to a helper (server) address.

Huan Pham drie.huanpham at gmail.com
Wed Nov 7 18:53:44 EST 2012


It looks like that I found the answer to the question 1

[edit forwarding-options helpers]
admin at LAB# set port ?
Possible completions:
  <port-value>         Port number of the protocol to listen (1..65535)




On Thu, Nov 8, 2012 at 10:49 AM, Huan Pham <drie.huanpham at gmail.com> wrote:

> Hi all,
>
> I want to configure the router as a relay agent for a non-standard bootp
> protocol, and the customer belong to a VRF routing instance. Appreciate
> your help with the following two questions. Thanks in advance.
>
> Huan
>
>
>
> *Question 1: How to forward non-standard UDP ports broadcast to a helper
> (server) address?*
>
>
> I am looking at the way to specify an helper address for a proprietary
> Bootp protocol, which uses a custom port number.
>
>
> The following link show the configuration for the standard bootp.
>
>
>
> http://www.juniper.net/techpubs/software/junos/junos94/swconfig-policy/configuring-the-router-or-interface-to-act-as-a-dhcpbootprelayagent.html
>
>
> Is there anyway to specify another non-standard port number so that the
> router also forward it to the remote server as well. Cisco can do this
>  with the following global command:
>
>
> *          ip forward-protocol udp 12345*
>
>
>
> http://www.cisco.com/en/US/docs/ios/12_1/iproute/command/reference/1rdipadr.html#wp1018318
>
>
> *Question 2: How to specify a helper address for an interface that belong
> to a VRF routing instance?*
>
> **
>
> - Should I configure the forwarding-options helpers under the VRF stanza,
> or
>
>
> - Should I configure the server in the global forwarding-options stanza
> (which has an option to specify a helper server IP following with a
> routing-instance)
>


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