Comments on: Cisco – How to configure an IOS DHCP server

By: Bartosz Wierzejewski

Bartosz Wierzejewski — Thu, 31 Dec 2009 15:26:49 +0000

THX! but:
there is no “-” mark in range of ip line “ip dhcp excluded-address 10.10.1.1 – (!!!) 10.10.1.99″

By: Josh Horton

Josh Horton — Tue, 24 Jun 2008 14:22:24 +0000

@Saud,

You might try this link.

http://blog.ioshints.info/2007/09/assigning-server-ip-addresses-with-dhcp.html

Josh

By: Saud

Saud — Thu, 19 Jun 2008 15:21:54 +0000

Is there a way to exclude the DHCP address for an MPLS VPN customer on PE router?

Like if the customer expect let;s say “69.10.1.1″ for an interface is there a way to always assign that particular address to the customer under his VRF instance. I tired to configrue the “host” command but it is not suppoorted for MPLS VPN.

By: Josh

Josh — Wed, 30 Apr 2008 02:23:55 +0000

Omar,

The option 150 is a standard tftp option, but some systems also use option 66.

Josh

By: Omar Flores

Omar Flores — Tue, 29 Apr 2008 16:17:48 +0000

is this can be used for avaya, avaya uses option 150 , had anyone issue something alike ?

Regards

By: sella

sella — Sat, 12 Apr 2008 08:49:22 +0000

well

By: superdave913

superdave913 — Wed, 19 Dec 2007 15:35:48 +0000

Great post. I recently documented a similar situation, but for use with Avaya phones. You can find the information at:
http://www.techsneeze.com/use-cisco-ios-switch-serve-dhcp-avaya-phones

I’ll be watching for more of your posts!

By: admin

admin — Wed, 28 Nov 2007 05:18:07 +0000

DHCP over the wan is accomplished with the ‘ip helper-address x.x.x.x’ command. It basically forwards dhcp requests to a remote dhcp server.

Yes, you could have multiple vlans with a different dhcp pool on the router for each.

By: Deepak Nagarajan

Deepak Nagarajan — Wed, 28 Nov 2007 04:58:02 +0000

Hi Josh,
Enabled DHCP server on top of the NAT example that you had published. The loopback inteface is able to get a dynamic IP from the router.

Thanks for the tutorial.
Deepak

By: aciscouser

aciscouser — Wed, 28 Nov 2007 04:17:59 +0000

Another great tutorial as usual. IOS DHCP is a great solution for a branch office. DHCP over the WAN? Mmm. Anyway, how about a multiple VLAN branch office network. One VLAN for workstations and VoIP phones, and another for the telephony server(s)? This configuration assumes a manageable L3 switch, but these types of switches are getting cheaper by the minute. At least the non-Cisco switches. It may also require the use of sub-interfaces on the internal Ethernet interface.