Running vrf-lite and dhcp server see 0.0.0.0 as giaddr

andybailey · ‎01-21-2010

Im running vrf-lite and our dhcp server see only 0.0.0.0. Im able to ping vlan10, and see the dhcp request. Running on a 2811. I have limited access to device. Do I need to turn on Dhcp-relay? Verifing ip forward-protocol. Do i need to add " vrf WISP to my helper-address? The interface it sends Dhcp request is also within the vrf. The dhcp scope is part of Vlan10 subnet

int vlan 10
ip vrf forward WISP
ip add x.x.x.x s.s.s.192

ip helper-address x.x.x.x

Giuseppe Larosa · ‎01-22-2010

Hello James,

the DHCP server is in the same VRF?

Hope to help

Giuseppe

andybailey · ‎01-22-2010

Yes and no. It uses another interface thats within the same vrf Wisp. On the other end of the vrf it is forwarded to our global dhcp server. in bold is where the unicast packet are going using the defaultroute

int fast0/0.1
encap dot1q 1
ip vrf forwarding WISP
ip add 172.16.6.2 255.255.255.252
!
int vlan 10
ip vrf forward WISP
ip add 66.223.195.129 255.255.255.192
ip helper-address 208.138.129.49
!
ip route vrf WISP 0.0.0.0 0.0.0.0 172.16.6.1