How to remove no ip dhcp use vrf routing

[John Cheetley]

Hi Cisco Engineers,

Cisco phones aren't getting IP addresses.

I have 2 IP ranges. 1 for voice and 1 for data.

The data range has been excluded. 

I have found entry in my script that looks strange as I don't have VRF connected.(Vpn Route Forwarding)

The entry is "no ip dhcp use vrf routing"

This entry sits above ip address exclusion ranges

Want phones to get 192.168.2.xxx range

Had a look under LAN, Switching and Routing but not find anything about this

I want to remove this entry ( as I believe this entry prohibits IP address allocation) to allow phones to get IP address

Can  any one assist please.

Thanks in advance

[lpassmore]

I doubt that that particular command is having any effect.  Refer to https://supportforums.cisco.com/discussion/10766731/no-ip-dhcp-use-vrf-connected for an explanation.

I wonder if your nat command is getting in the way somehow.  Have you done a debug ip dhcp server packet to see what is happening?

[John Cheetley]

Hi lpassmore,

Thanks for the quick reply.

Not yet.  Will try tonight your suggestion.

[johnlloyd_13]

hi,

your router config looks fine.

do you have voice VLAN configured on your switch?

vlan 3

 name VOICE

int f0/x

 switchport voice vlan 3

[John Cheetley]

Thanks johnlloyd_13 for the quick reply.

Checking this. Sorry for delay.

On a separate issue. Can CUCM 7.2.1 be installed on a Cisco WRVS4400N Wireless-N Gigabit Router

[John Cheetley]

Thanks,

Will check this tonight and let you know

[John Cheetley]

OK  johnlloyd_13,

I will place "switchport voice vlan 3 then spanning-tree portfast on fa0/3 

And make Voice vlan to 30 (as this shows on router side for vlan)

[John Cheetley]

Hi johnlloyd_13,

vlan 3 has Voice on fa0/3 only. 

[John Cheetley]

Hi lpassmore,

Output of command

See attachment

[lpassmore]

I can see the issue is that the DHCP requests seem to be coming from Interface F0/0

Mar  1 22:38:16.510: DHCPD: DHCPREQUEST received from client 0100.1795.708e.67.
Mar  1 22:38:16.514: DHCPD: Finding a relay for client 0100.1795.708e.67 on interface FastEthernet0/0.

This has the IP address 192.168.0.12/24 for which there is no scope on your router and no ip helper-address.

Your Voice VLAN Pool seems to be for 192.168.2.0/24 and this refers to Int F0/1.3 (dot1Q tag 3)

Check the Voice VLAN on the switch is 3 (not 30 like it says in the description) and where that is connected to the router

This line is also a little troubling since you seem to want to point your phones to that for their config.  This is also the address of F0/0

Mar  1 22:38:03.946: %IP-4-DUPADDR: Duplicate address 192.168.0.12 on FastEthernet0/0, sourced by 000c.2915.4054

LP

[John Cheetley]

Hi lpassmore.

Yes. Router ip is 192.168.0.12

Voice vlan pool is 192.168.2.0/24

There are 2 lots of voice vlan command strings

1 for int fa0/3 and 1 for int vlan2 as below shows...

FastEthernet0/3

description Voice
duplex full
switchport voice vlan 30
spanning-tree portfast

Beneath this is ..

interface VLAN2
description Voice vlan 20
ip address 10.0.0.1 255.255.255.0
ip directed-broadcast
no ip route-cache
shutdown

Unless you want me to provide switch config..

Thanks again ... :) ..

[John Cheetley]

And ATM. I have once again lost telnet access to router..Tried putty but not work again..