[cisco-voip] DHCP not really working

[Ted Nugent]

You don't happen to have a helper address on your 
interface FastEthernet0/1.2 interface do you?
Please provide a config for your interfaces and
telephone service. 
Ted

--- Kelemen Zoltan <keli at carocomp.ro> wrote:

> Hi!
> 
> It's a bit off-topic, however I'm all clueless, so
> any help would be 
> appreciated.
> 
> I have a CCME (2811, with 12.4(13r)T), with 7911G
> phones installed. Two 
> VLANs, one for data, one for voice.
> 
> The router should be responsible for DHCP for the
> phones, but it does 
> not seem to work - phones already in the network
> have their IP adress, 
> keep their address through a reset, but new phones
> added to the network 
> can't get an IP.
> 
> However, more people have access to the router and
> it is very possible 
> it might have been misconfigured.
> 
> For starters, I noticed a
> 
> no service dhcp
> 
> in the running config, so I removed that. The dhcp
> debug messages began 
> to appear, but it seems like the router still can't
> find "itself":
> 
> Aug 17 14:13:41.160: DHCPD: DHCPREQUEST received
> from client 
> 0100.1bd4.60b5.e2.
> Aug 17 14:13:41.160: DHCPD: Finding a relay for
> client 0100.1bd4.60b5.e2 
> on interface FastEthernet0/1.2.
> Aug 17 14:13:41.880: DHCPD: DHCPREQUEST received
> from client 
> 0100.1bd4.609c.cf.
> Aug 17 14:13:41.880: DHCPD: Finding a relay for
> client 0100.1bd4.609c.cf 
> on interface FastEthernet0/1.2.
> 
> Here are relevant parts of the configuration:
> 
> no ip dhcp use vrf connected
> ip dhcp excluded-address 192.168.42.1 192.168.42.2
> !
> ip dhcp pool ITS
>    network 192.168.42.0 255.255.255.0
>    option 150 ip 192.168.42.1
>    default-router 192.168.42.1
> !
> !
> no ip domain lookup
> 
> ......................
> 
> any ideas? useful show commands?
> most sh ip dhcp ... commands show nothing, except
> for
> 
> Router#sh ip dhcp server statistics
> Memory usage         23512
> Address pools        1
> Database agents      0
> Automatic bindings   0
> Manual bindings      0
> Expired bindings     0
> Malformed messages   0
> Secure arp entries   0
> 
> Message              Received
> BOOTREQUEST          0
> DHCPDISCOVER         0
> DHCPREQUEST          1912
> DHCPDECLINE          0
> DHCPRELEASE          0
> DHCPINFORM           0
> 
> Message              Sent
> BOOTREPLY            0
> DHCPOFFER            0
> DHCPACK              0
> DHCPNAK              0
> 
> Router#sh ip dhcp pool ITS         
> 
> Pool ITS :
>  Utilization mark (high/low)    : 100 / 0
>  Subnet size (first/next)       : 0 / 0
>  Total addresses                : 254
>  Leased addresses               : 0
>  Pending event                  : none
>  1 subnet is currently in the pool :
>  Current index        IP address range              
>      Leased addresses
>  192.168.42.1         192.168.42.1     -
> 192.168.42.254    0
> 
> Thanks,
>   Zoltan
> _______________________________________________
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> https://puck.nether.net/mailman/listinfo/cisco-voip
> 



       
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