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touristsis
Contributor III
Contributor III

DHCP pool reservation

ip dhcp-server pool "khang"

  default-router 10.10.150.1

  host 10.10.150.139 255.255.255.0

  hardware-address 00:a0:c8:61:36:df ethernet

Hi, I've program that already, but the phones get that ip address, then boots up then get another ip 10.10.150.140.  Any ideas?  I'm having problems with the phone, so I wanted to keep the same ip address so that I can run some debug program.  However, the phone is getting 10.10.150.139, reboots, then get 10.10.150.140 from dhcp server.

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5 Replies
Anonymous
Not applicable

Re: DHCP pool reservation

:

Thank you for asking this question in the support community.  Can you verify that the MAC address of the phone 00:a0:c8:61:36:df?  Is the ADTRAN unit the only DHCP server on the network?

If you would like to reply with the configuration of the ADTRAN router, as well as the output from the debug ip dhcp server command, I will be happy to review it for you.

Please, do not hesitate to reply to this post with any questions or additional information.  I will be happy to help in any way I can.

Levi

touristsis
Contributor III
Contributor III

Re: DHCP pool reservation

Levi,  Here is the debug output.  Looks like it did give it the correct, then change it, I have no idea why.  I'm guessing have something to do with option 157.

Message was edited by: levi (Removed debug and configuration, and added as attachment)

Anonymous
Not applicable

Re: DHCP pool reservation

:

Thank you for replying with the debug information and the configuration.  I have a few questions, based on the configuration.  It appears that the phone subnet is in the native VLAN (VLAN 1).  Do you also have PCs plugged into the phones?  Can you assign the phones VLAN 1 in the option 157, or assign the switchports on the router where the phones are connected to be in VLAN 1?  It is not common to have the DHCP option 157 set the "Layer2Tagging=False" and also have the switchports configured as trunks.

Please, let me know if you can try any of those options.

Levi

touristsis
Contributor III
Contributor III

Re: DHCP pool reservation

Hi Levi,  there is no pc plug into the back of the phone.  I only have 1 vlan on this router.  I have option 157 Layer2Tagging=True,VlanID=1 and I get the same results.

Levi,  I think the problem is on the 7100 which is the phone system also on the remote VPN other side.  So when the phone boot up, the first time, it gets the address 10.10.150.140.  It gets the FTP file fromt he 7100 and now it goes back to pickup any available ip address.

See Debug here

2013.05.20 17:31:52 DHCP.SERVER Processing Discover Message (Xid = 2011ee) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:31:52 DHCP.SERVER Offering IP Address 10.10.150.140 to 00:A0:C8:61:36:DF
2013.05.20 17:31:52 DHCP.SERVER Server sent an Offer to the client
2013.05.20 17:31:57 DHCP.SERVER Error, the minimum message size from RFC 1542 is 300 Bytes
2013.05.20 17:31:57 DHCP.SERVER Processing Request Message (Xid = 2011ee) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:31:57 DHCP.SERVER Server sent an Ack to the client
2013.05.20 17:32:08 DHCP.SERVER Processing Release Message (Xid = 2011da) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:32:08 DHCP.SERVER No Reply required
2013.05.20 17:32:37 DHCP.SERVER Error, the minimum message size from RFC 1542 is 300 Bytes
2013.05.20 17:32:37 DHCP.SERVER Processing Discover Message (Xid = 207ef4) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:32:37 DHCP.SERVER Offering IP Address 10.10.150.100 to 00:A0:C8:61:36:DF
2013.05.20 17:32:37 DHCP.SERVER Server sent an Offer to the client
2013.05.20 17:32:42 DHCP.SERVER Error, the minimum message size from RFC 1542 is 300 Bytes
2013.05.20 17:32:42 DHCP.SERVER Processing Request Message (Xid = 207ef4) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:32:42 DHCP.SERVER Server sent an Ack to the client

2013.05.20 17:33:00 FIREWALL id=firewall time="2013-05-20 17:33:00" fw=khanghome pri=1 proto=56953/tcp src=173.201.192.220 dst=24.153.134.78 msg="TCP connection request received is invalid (expected SYN, got ACK), dropping packet; flags=0x11 Src 110 Dst 56953 from Public policy-class on interface eth 0/1" agent=AdFirewall
2013.05.20 17:34:45 FIREWALL id=firewall time="2013-05-20 17:34:45" fw=khanghome pri=1 proto=5060/udp src=24.173.27.194 dst=10.10.150.100 msg="Spoofing detected, dropping packet Src 5060 Dst 5060 from TUNNEL policy-class on interface tunnel 1" agent=AdFirewall
2013.05.20 17:34:53 FIREWALL id=firewall time="2013-05-20 17:34:53" fw=khanghome pri=1 rule=17  proto=http src=10.10.150.106 dst=192.168.150.254 msg="Zero bytes transferred for connection Src 57441 Dst 80 from Private policy-class on interface vlan 1" agent=AdFirewall 2013.05.20 17:35:47 DHCP.SERVER Error, the minimum message size from RFC 1542 is 300 Bytes
2013.05.20 17:35:47 DHCP.SERVER Processing Discover Message (Xid = 20762e) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:35:47 DHCP.SERVER Offering IP Address 10.10.150.140 to 00:A0:C8:61:36:DF
2013.05.20 17:35:47 DHCP.SERVER Server sent an Offer to the client
2013.05.20 17:35:52 DHCP.SERVER Error, the minimum message size from RFC 1542 is 300 Bytes
2013.05.20 17:35:52 DHCP.SERVER Processing Request Message (Xid = 20762e) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:35:52 DHCP.SERVER Server sent an Ack to the client
2013.05.20 17:36:03 DHCP.SERVER Processing Release Message (Xid = 207617) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:36:03 DHCP.SERVER No Reply required
2013.05.20 17:36:25 DHCP.SERVER Error, the minimum message size from RFC 1542 is 300 Bytes
2013.05.20 17:36:25 DHCP.SERVER Processing Discover Message (Xid = 207624) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:36:25 DHCP.SERVER Offering IP Address 10.10.150.103 to 00:A0:C8:61:36:DF
2013.05.20 17:36:25 DHCP.SERVER Server sent an Offer to the client
2013.05.20 17:36:30 DHCP.SERVER Error, the minimum message size from RFC 1542 is 300 Bytes
2013.05.20 17:36:30 DHCP.SERVER Processing Request Message (Xid = 207624) on 10.10.150.0/255.255.255.0 from 00:A0:C8:61:36:DF
2013.05.20 17:36:30 DHCP.SERVER Server sent an Ack to the client

Anonymous
Not applicable

Re: DHCP pool reservation

:

I marked this post as "assumed answered," but please do not hesitate to reply if you have further questions.

Levi