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New Member

7911 can't get IP from CME 4.0 on 2651XM

Hello,

i have two 7911G ip phone, both of them can't resolve ip from DHCP service on 2651XM Router have CME 4.0

the phone stuck in "configuring ip" state

the strange thing !

the same phones can easy get ip and register on Dynamips "Router Emulation program" have CME 4.1

the configuration is same on the two router

the another strange one !

i did trick to register 7911 on 2651XM by run Dynamips on the same time and connecting all on one Switch, after phone register on Dynamips i turned it off, then keep 2651XM running, then the phone turn his register on 2651XM 

---------------------Dynamips-----------------

ip dhcp pool lab
   network 10.20.7.0 255.255.255.0
   default-router 10.20.7.1 
   dns-server 4.2.2.3 
   option 150 ip 10.20.7.20 <<<my PC>>> 
!

telephony-service
 max-ephones 10
 max-dn 10
 ip source-address 10.20.7.1 port 2000
 auto assign 1 to 10
 system message myLAB
 date-format dd-mm-yy
 max-conferences 4 gain -6
 moh music-on-hold
 web admin system name cisco password cisco
 dn-webedit 
 time-webedit 
 transfer-system full-consult
 directory entry 1 500 name Mahmoud
 directory entry 2 503 name Ahmed
 create cnf-files version-stamp Jan 01 2002 00:00:00
!
!
ephone-dn  1  dual-line
 number 500
!
!
ephone-dn  2  dual-line
 number 501
!
!
!
ephone-dn  3  dual-line
 number 502
!
!
ephone-dn  4  dual-line
 number 503
!
!
-------------------------------------------------

--------------2651XM Router-------------------

!
ip dhcp pool int
   network 10.20.7.0 255.255.255.0
   default-router 10.20.7.1 
   option 150 ip 10.20.7.20 <<<my PC>>> 
   dns-server 4.2.2.3 
!
telephony-service
 load 7911 SCCP11.8-3-1S
 max-ephones 10
 max-dn 10
 ip source-address 10.20.7.1 port 2000
 auto assign 1 to 10
 system message myLAB
 date-format dd-mm-yy
 max-conferences 4 gain -6
 moh music-on-hold
 web admin system name cisco password cisco
 dn-webedit 
 time-webedit 
 transfer-system full-consult
 create cnf-files version-stamp Jan 01 2002 00:00:00
!
!
ephone-dn  1  dual-line
 number 500
!
!         
ephone-dn  2  dual-line
 number 501
!
!
ephone-dn  3  dual-line
 number 502
!
!
ephone-dn  4  dual-line
 number 503
!
-------------------------------------------------------------

no result of debug ephone register on 2651xm

 

5 REPLIES

Have you tried factory

Have you tried factory default the phone? Can you do debug ip dhcp events / packets and see if the router is getting any requests?

New Member

thanks Niranjan and Michael

--- repeated post--

Cisco Employee

Hello,In the 2651

Hello,

In the 2651 configuration, the option 150 IP address is wrongly configured. Please try it with CME IP address

ip dhcp pool int
   network 10.20.7.0 255.255.255.0
   default-router 10.20.7.1 
   option 150 ip 10.20.7.20 <<<my PC>>> --->10.20.7.1
 

Thanks,

Niran

 

New Member

thanks Niranjan and Michael

thanks Niranjan and Michael for your interest

i already configured the option 150 ip address with CME ip address in the first time and the same result i got, then i let my PC acting as TFTP server, because changed many SCCP firmware, as i thought it's bug or something wrong in that

 

Michael,

yea i tried that also, but getting no understood info, since the IP phone sends discover message every time although he got one, but not reachable by ping BTW

 

------DHCP ip server evenets debug result--------

*Mar  1 00:02:01.587: DHCPD: Sending notification of DISCOVER:
*Mar  1 00:02:01.587:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:01.587:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:01.587:   DHCPD: circuit id 00000000
*Mar  1 00:02:01.587: DHCPD: Seeing if there is an internally specified pool class:
*Mar  1 00:02:01.587:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:01.587:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:01.587:   DHCPD: circuit id 00000000
*Mar  1 00:02:03.590: DHCPD: Adding binding to radix tree (10.20.7.10)
*Mar  1 00:02:03.590: DHCPD: Adding binding to hash tree
*Mar  1 00:02:03.590: DHCPD: assigned IP address 10.20.7.10 to client 0100.2545.9598.53.
*Mar  1 00:02:05.509: DHCPD: Sending notification of DISCOVER:
*Mar  1 00:02:05.513:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:05.513:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:05.513:   DHCPD: circuit id 00000000
*Mar  1 00:02:05.513: DHCPD: Seeing if there is an internally specified pool class:
*Mar  1 00:02:05.513:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:05.513:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:05.513:   DHCPD: circuit id 00000000
Router#
Router#
*Mar  1 00:02:09.460: DHCPD: Sending notification of DISCOVER:
*Mar  1 00:02:09.460:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:09.460:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:09.464:   DHCPD: circuit id 00000000
*Mar  1 00:02:09.464: DHCPD: Seeing if there is an internally specified pool class:
*Mar  1 00:02:09.464:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:09.464:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:09.464:   DHCPD: circuit id 00000000
Router#
Router#
*Mar  1 00:02:17.461: DHCPD: Sending notification of DISCOVER:
*Mar  1 00:02:17.461:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:17.461:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:17.461:   DHCPD: circuit id 00000000
*Mar  1 00:02:17.461: DHCPD: Seeing if there is an internally specified pool class:
*Mar  1 00:02:17.461:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:17.465:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:17.465:   DHCPD: circuit id 00000000
Router#
*Mar  1 00:02:32.053: DHCPD: checking for expired leases.
*Mar  1 00:02:33.467: DHCPD: Sending notification of DISCOVER:
*Mar  1 00:02:33.467:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:33.467:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:33.467:   DHCPD: circuit id 00000000
*Mar  1 00:02:33.467: DHCPD: Seeing if there is an internally specified pool class:
*Mar  1 00:02:33.467:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:33.467:   DHCPD: remote id 020a00000a14070101000000
*Mar  1 00:02:33.467:   DHCPD: circuit id 00000000
*Mar  1 00:02:33.483: DHCPD: Sending notification of ASSIGNMENT:
*Mar  1 00:02:33.483:  DHCPD: address 10.20.7.10 mask 255.255.255.0
*Mar  1 00:02:33.483:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:33.483:   DHCPD: lease time remaining (secs) = 86400
*Mar  1 00:02:37.470: DHCPD: Sending notification of ASSIGNMENT:
*Mar  1 00:02:37.470:  DHCPD: address 10.20.7.10 mask 255.255.255.0
*Mar  1 00:02:37.474:   DHCPD: htype 1 chaddr 0025.4595.9853
*Mar  1 00:02:37.474:   DHCPD: lease time remaining (secs) = 86400

==============================================================

 

-----------------------------DHCP ip server packets debug result ---------------------

*Mar  1 00:04:06.856: DHCPD: DHCPDISCOVER received from client 0100.2545.9598.53 on interface FastEthernet0/1.
*Mar  1 00:04:06.856: DHCPD: Sending DHCPOFFER to client 0100.2545.9598.53 (10.20.7.10).
*Mar  1 00:04:06.860: DHCPD: broadcasting BOOTREPLY to client 0025.4595.9853.
*Mar  1 00:04:11.540: DHCPD: DHCPDISCOVER received from client 0100.2545.9598.53 on interface FastEthernet0/1.
*Mar  1 00:04:11.540: DHCPD: Sending DHCPOFFER to client 0100.2545.9598.53 (10.20.7.10).
*Mar  1 00:04:11.540: DHCPD: broadcasting BOOTREPLY to client 0025.4595.9853.
Router#
Router#
*Mar  1 00:04:19.533: DHCPD: DHCPDISCOVER received from client 0100.2545.9598.53 on interface FastEthernet0/1.
*Mar  1 00:04:19.533: DHCPD: Sending DHCPOFFER to client 0100.2545.9598.53 (10.20.7.10).
*Mar  1 00:04:19.537: DHCPD: broadcasting BOOTREPLY to client 0025.4595.9853.
Router#
*Mar  1 00:04:35.535: DHCPD: DHCPDISCOVER received from client 0100.2545.9598.53 on interface FastEthernet0/1.
*Mar  1 00:04:35.535: DHCPD: Sending DHCPOFFER to client 0100.2545.9598.53 (10.20.7.10).
*Mar  1 00:04:35.535: DHCPD: broadcasting BOOTREPLY to client 0025.4595.9853.
Router#
Router#
*Mar  1 00:05:07.536: DHCPD: DHCPDISCOVER received from client 0100.2545.9598.53 on interface FastEthernet0/1.
*Mar  1 00:05:07.536: DHCPD: Sending DHCPOFFER to client 0100.2545.9598.53 (10.20.7.10).
*Mar  1 00:05:07.536: DHCPD: broadcasting BOOTREPLY to client 0025.4595.9853.
=======================================================================

 

New Member

now to avoid my trick about

now to avoid my trick about Dynamips and let it offical :)

i just applied the DHCP configuration on Dynamips without telephoney-service and let the default router is 2651XM

and the phone can easy get ip from DHCP, then register on 2651xm

but it's not logic to me that 7911 can't get his ip from 2651XM router with many IOS 12.4T and CME 3.3, 3.4, and last 4.0 !

------------------------Dynamips DHCP ip server packets debug result------------------------------

*Mar  1 00:19:42.375: DHCPD: DHCPREQUEST received from client 0100.2545.9598.53.
*Mar  1 00:19:42.379: DHCPD: No default domain to append - abort update
*Mar  1 00:19:42.379: DHCPD: Sending DHCPACK to client 0100.2545.9598.53 (10.20.7.10).
*Mar  1 00:19:42.383: DHCPD: broadcasting BOOTREPLY to client 0025.4595.9853.
*Mar  1 00:19:42.395: DHCPD: DHCPREQUEST received from client 0100.2545.9598.53.
*Mar  1 00:19:42.399: DHCPD: No default domain to append - abort update
*Mar  1 00:19:42.399: DHCPD: Sending DHCPACK to client 0100.2545.9598.53 (10.20.7.10).
*Mar  1 00:19:42.403: DHCPD: unicasting BOOTREPLY for client 0025.4595.9853 to relay 10.20.7.1.
Voice#
Voice#
Voice#

ip dhcp pool lab
   network 10.20.7.0 255.255.255.0
   default-router 10.20.7.1 <<2651xm IP>>
   dns-server 4.2.2.3 
   option 150 ip 10.20.7.20  <<my PC>>
!

------------------------------------------------------------------------------------------------------------------------

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