DHCP and VRF

From: Martin Kiefer <martin_at_kiefer.dk>
Date: Thu, 3 Sep 2009 12:34:05 +0200

Hi.

 

I am having a small problem. I wish to have a DHCP server on the router and
having the DHCP scope inside a VRF.

 

A small configuration example:

 

the router:

!

ip dhcp excluded-address 10.1.1.1 10.1.1.10

!

ip dhcp pool TEST

   vrf TEST

   network 10.1.1.0 255.255.255.0

!

ip vrf TEST

!

!

interface FastEthernet0/0

 ip vrf forwarding TEST

 ip address 10.1.1.1 255.255.255.0

 

The problem is that the ip dhcp exluded... command does not work. The router
stills assigns ip addresses within the excluded address scope:

 

*Mar 1 00:16:55.717: %LINK-3-UPDOWN: Interface Vlan1, changed state to up

*Mar 1 00:16:55.726: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1,
changed state to up

*Mar 1 00:16:58.754: %DHCP-6-ADDRESS_ASSIGN: Interface Vlan1 assigned DHCP
address 10.1.1.4, mask 255.255.255.0, hostname Switch

 

And from the router:

R1#sh ip dhcp pool

 

Pool TEST :

 Utilization mark (high/low) : 100 / 0

 Subnet size (first/next) : 0 / 0

 VRF name : TEST

 Total addresses : 254

 Leased addresses : 1

 Pending event : none

 1 subnet is currently in the pool :

 Current index IP address range Leased addresses

 10.1.1.5 10.1.1.1 - 10.1.1.254 1

 

R1#sh ip vrf TEST

  Name Default RD Interfaces

  TEST <not set> Fa0/0

 

Any good ideas here?

 

/Martin Kiefer

Blogs and organic groups at http://www.ccie.net
Received on Thu Sep 03 2009 - 12:34:05 ART

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