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DHCP on Call Manager Subscriber

rjohnson
Level 1
Level 1

We are wanting to setup DHCP on one of the subscribers to split the load and add a layer of redundancy to our phones.

When we setup the DHCP service and configure its options, we get an error message when trying to start the service:

Event ID 1052

The DHCP/BINL service on this workgroup server has encountered another server with ip address, x.x.x.x belonging to the domain yourdomainname.com.

The call manager server is not a member of our domain and is in its own workgroup avvid.com.

We can do this same setup on other call manager servers in our network (on a different vlan), but not this server.

MS Technet indicates:

Explanation

This event message indicates the possibility of an unauthorized server on the network. For the directory authorization process to work properly, it is assumed and necessary that the first DHCP server introduced on to your network participate in the Active Directory service. This requires that the server be installed as either a domain controller or a member server. Where you are either planning for or actively deploying Active Directory services, it is important that you do not select to install your first DHCP server computer as a stand-alone server.

Thanks in advance,

Russ

1 Reply 1

Hin Lee
Cisco Employee
Cisco Employee

Your domain dhcp is acting like a dhcp client (broadcasting discover packet) to find out if there are UNauthorized dhcp servers. Your subscriber callmanager responded and it was promptly shut down by the domain.

To disable the Rogue Detection feature:

Apply the latest service pack for Windows 2000 to the DHCP server.

Set the following registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\DHCPServer\Parameters

Value name: DisableRogueDetection

Data type: REG_DWORD

Value data: 1

H. M.