ASR9k relay to DHCP Server (4948e)

[michael.mastropaolo]

Hello.

I'm trying to figure out how to do this.  We have an ASR9k that has some gear off of it, in which I assigned a /28 to it.  A 4948e is uplinked to this ASR9k.  I'm trying to have the gear that is connected to the ASR be able to pull DHCP addresses within that /28 that I assigned to it.

My thought was to setup a pool on the 4948e with that small block, and then on the ASR, add a helper for that BVI, but I'm not sure how to do this, if this is even a viable solution.  I may have the pool configured incorrectly or maybe the helper on the ASR (Lo0 of 4948e?).

Any assistance would be appreciated.

Thanks.

-Michael

[Fredrik Lönnman]

Shouldn't be a problem. There is also the possibility of running the DHCP server directly on the ASR9K. If this doesn't work for you, please include the relevant configuration and debug.

[michael.mastropaolo]

Well the ideal thing would be to setup a pool on the ASR itself but I can't figure that out?  From my understanding, it's not possible. 

With the the setup of the 4948 as the server, I just can't seem to get it to work. I'm on my phone now but will post configuration later. 

Thanks. 

[Fredrik Lönnman · Accepted solution]

This might help: http://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r5-1/addr_serv/configuration/guide/b_ipaddr_cg51xa9k/b_ipaddr_cg51xa9k_chapter_0101.html#concept_CA2B956D03FB4533A3653BD0119AC788

[michael.mastropaolo]

Thank you very much - much appreciated!