topic Re: dhcp option 43 configuration in Controllers

dhcp option 43 configuration

nathan.spena — Fri, 01 Mar 2019 12:33:32 GMT

Hi,

In the lab, our apic-em controller is 10.10.2.20 .

We are also running just a generic windows 2012 dhcp server which ip is 10.10.1.50

We are a little uncertain about a few things including the option 43 settings..

Our Upstream router settings are as follows:

Router(config)# pnp profile 3750x_project

Router(config)# transport http ipv4 10.10.2.20 port 6088

Router(config)# pnp startup-vlan 1601

Our dhcp server option 43 as follows:

Re: dhcp option 43 configuration

aradford — Thu, 17 Nov 2016 01:01:25 GMT

Hi Nathan,

A couple of observations/questions:

1) the pnp profile will get created on the device that is doing PNP as a result of the DHCP option 43. You should not configure it manually (although you could do this for testing).

2) Is there are reason you are using port 6088, by default APIC will be listening on port 80 for the initial connection.

Which device is supposed to be doing PnP? The router, or a device (3750) that is attached to it?

Adam

Re: dhcp option 43 configuration

chadrife1 — Mon, 29 Apr 2019 17:22:39 GMT

I'm wanting to move my opt 43 off of the router and actually utilize Windows DHCP. I'm not understanding how to get the output of the ASCII I have in the router.

For example:

ip dhcp pool pnp_device_pool -- Name of DHCP pool
network 192.168.1.0 255.255.255.0 -- Range of IP addresses assigned to clients
default-router 192.168.1.1 -- Gateway address
option 43 ascii "5A1N;B2;K4;I172.19.45.222;J80" -- Option 43 string

Windows DHCP

Opt 43

What type of converter do I need to be using?

Re: dhcp option 43 configuration

chadrife1 — Wed, 01 May 2019 17:37:54 GMT

Confirmed that ascii to hex was giving me the answer just couldn't believe the length of characters!

All is well 🙂