Cisco Switching/Routing :: 7911 - IP Phones Stuck In Registering
Nov 18, 2012
We have a couple of 7911 that get stuck in Registering, each monday. During the week, no user reports the problem. But after the weekend, we get ready to hear complaints from our collegues. The same phones often experience this issue, although the other phones report no problems. The problem is temporarily solved when we issue "shut/no shut" on switch ports.
phone firmware version: SCCP11.8-5-2S
Interface configuration:
interface FastEthernet1/0/27
[Code].....
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Mar 31, 2013
I have a problem with my Cisco 7961 phones not registering on my CUCM 8.6 install on ESXi 5. Weird because I have Cisco IP communicator phones that register with no problem. You guys know what I can be missing. I have restarted the CUCM and services multiple times. The phone log on my phones say it can't find dhcp and DNS unknown host but my CUCM is configured by IP address. I also attached some screenshots
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May 22, 2013
I am having an issue where MAC addresses from my user PC's are registering on different ports than the ones they are plugged in to. I have my PC's plugged in to my Cisco phones (most of which are 7941's), and then patched back to my switch, (4507 or 4006). The issue is that a user will be working fine, they will have both their PC and Phone MAC's registered on the correct prot and then with out intervention the PC MAC addresses will register itself with another physical port and the user will pull a 169.x.x.x address and have not access to the network. This is happening to multiple users all of which are hardwired. Port security is configured to allow 3 MAC's, obviously if I change that to 2 it will not allow an incorrect MAC's to register with that port, but I would like to know why this is happening. Both the 4507 and 4006 have been up for 1 year and 33 weeks. The fix has been to find out where their MAC has registered it self, unplugg that PC from the phone, and let the port security aging time (2min) clear all MAC's from the port.
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Feb 20, 2013
I have an issue on the Cat 3750 on the voice vlan; IP Phone not registering with PBX & Signaling Server. The ip phone hits dhcp and gets an ip address from a data scope. Data scope does have dhcp options for voice, same as voice scope so it should work but it doesnt.We removed the switchport access vlan 50 command, and left the switchport access voice vlan 51, and now the phone registers.Anything I can check on the switch to make sure voice vlan is working? Any debug voice vlan commands?The switch doesnt seem to distinguish voice and data traffic.I check dhcp and both scopes vlan 50 and vlan 51 have the same configuration. Defautl GW is different of course Catalyst 3750 is running 12.2(25)SEE2 [code]
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May 13, 2012
I am working in Private IT company. The facility is having 4000 users and it is a high resliency site having two core switches and nearly 40 access switches. All core and access switches are 4506E switches and odd vlan is taking core-1 and even vlan is core-2. We are having cisco ip phones 6921 connected as daisy chain.( Phone is connected to access switch and the desktop is connected to ip phones). The Ip phone are getting registered cisco call maneger server. The call manager one leg is connected to one core switch and another one is core 2 same like my DHCP server.
For all vlans the the default gateway is my firwall. The voice needs to hit the call manager, hence we have implemented a source routing to call manager for the voice vlans. the problem is once we down the Core-1 some of the IP phones are not getting registered no matterit is on odd or even vlan. The same issue for Core-2. We suspect that there might be some issue in the DHCP server for voice vlan routing. But server team is saying that there is no issue with the DHCP server.Now network is vulnerable that if any core switch is down my voice ip phones will be down.
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Jun 5, 2009
I have some Catalyst 3560 PoE switches running the latest 12.2(50)SE1 image. I have a working configuration for STP, QoS, Voice & Access VLANs, Port-Security & IGMP snooping - I stress this is working PERFECTLY. Now I have been playing with wired 802.1x port authentication for a while which again I have sucessfully deployed on ports without IP Phones. I did some more testing with 802.1x clients behind some Cisco IP Phones and after understanding the issues and workarounds I thought I had a working environment. The environment is XP SP3 with the new separate wired 802.1x supplicant, workstations are all in a 2003 AD Domain and the wired 802.1x settings are configured through group policy. I had issues with Windows Server 2003 SP2 not working behind IP Phones but this I put down to the supplicant being different from the new one in XP SP3. MS don't have any plans for Server 2003 SP3 (or XP x64 SP3?) nor can I find any hotfixes to resolve this so it's a 'caveat'.Anyway I have tested this many times and with XP SP3 and the new supplicant it all seems to work well (only the access VLAN is using 802.1x Authentication, I am not authenticating the IP Phones via 802.1x).
Now today it stopped working and 802.1x clients behind the 7970 IP Phones no longer authenticate. I have spent an hour or so looking at this and the IOS is the same, as is the configuration on the IAS (Radius) server, as are the XP clients. I was scratching my head a bit and then looked at the IP Phone - the software on the phone has been upgraded to 8.5(2) - previously it was 8.4(4). I managed tp downgrade the software via CUCM to 8.4(4) and it now works. I have retested it several times so this is obviously an issue (either a new feature or a bug?) with the latest code for the 7970. I have checked and it's the same codebase for all the latest IP Phones - 7906, 7911, 7931, 7941, 7942, 7945, 7961, 7962, 7965, 7970, 7971 & 7975 which was released on 1st June. I have looked through the release notes and EAP-FAST has been added but this is an update to the EAP supplicant on the phone and not a feature of the 802.1x pass-thru from the attached device. I can find no other 802.1x or EAP references.
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Mar 12, 2013
We are facing problem with Cisco IP phones which are connected to module WS-X4248-RJ45V.Phones are getting restarted and sometimes phones will not take power.Initially we suspected issue with power consumption, but we have enough power in the module.
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May 29, 2013
I just installed a refurb'd 3560 48 port POE switch and configured all ports on VLAN100. All Polycom IP 430 phones (with power adapter and without power adapter) constantly reboot every couple minutes. Any Cisco 7960 phone does not constantly reboot and works correctly. When I plug a small unmanaged switch into a 3560 port and then plug the Polycom phone into the unmanaged switch powering the phone with a power adapter, the phone works correctly. So it seems that the 3560 is causing the Polycom to reboot.
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May 15, 2012
I would like to know if there an specific configuration in order to apply QoS configuration in Switches 3750X for Polycoms Phones.I was reviewing the information from Cisco but mostly of them apply only for cisco phones, and just some or basic for non cisco phones.
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Mar 21, 2013
I have a Catalyst 2960-S switch and a pre-standard IP Phone (Cisco 7960). When I connect the phone to the switch the switch recognizes the phone and supplies power. I would like to prevent this behaviour. ie. I would like to disable detection of pre-standard equipment. Is there a command I can issue on the 2960-S to do this? For example, on a switch from a different vendor I can issue the command: no power pre-std-detect to prevent it from detecting the 7960 phone, is there an equivalent command on the Catalyst 2960-S ?
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Nov 13, 2011
Will ACL110 allow IP phones communicate with VoIP server. Do I need to add line to allow multicast traffic? [code]
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Apr 9, 2012
We are experiencing two of our layer 3 switches (3560 PoE and 3750 PoE) switches giving us problems with giving power to IP phones. These switches have an embedded PoE module and would previously give power to all IP phones on all its ports. Now all of a sudden over the past few months 6 of these ports have stopped powering phones. The phones are the same ie. 7911 and they take less than 15.4 W. We believe that the PoE module has started malfunctioning and has stopped giving power to all the ports. The port 'grants' power and then removes it. Below is a link showing all the messaged we receive on the terminal session. It is NOT a hardware fault with the PoE: [code]
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Apr 9, 2013
I have a Cisco 6500 which has two VLANs defined
VLAN 30 for Data VLAN
VLAN 31 for Voice VLAN
I have two Cisco 3750 switches.both switches are connected to IP Phones.the configuration of Cisco 6500 Trunk Port to Cisco 3750 is [code] On Cisco 3750, the trunk port to 6500 has the configuration [code].The IP Phones connected to the Cisco 3750 are 7911,7979, 7940, 7961.
All phone are working fine, the phones get their ip address from voice vlan, and systems connected to phones get from data vlan, except 7940/7960.
These two models of IP Phones remain on Configuring IP, and when you check the IP Settings, it gives Data VLAN IP, which does not have a TFTP.once you manually enter TFTP address in the field, it registers instantly, due to ip routing in the network.
these phones were working fine before, but suddenly few days back they went out of the network, and still are in Configuring IP state.I also tried to convert these ports connected to 7940/7960 to access ports [code] but still the IP is taken from the Access Vlan (30). Even If you configure a single VLAN on these ports, the IP phones then never get the IP.
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Oct 7, 2012
I just trying to setup a dhcp server in my catalyst 3560 switch for a nortel ip phones. I show you mmy configuration:
VOICE VLAN: 3
DATA VLAN: 1
S1:10.2.110.200
port:4100
Nortel IP Phones: IP 2002 (Firmware Version 0604D9H) & IP 1110 (Firmware Version 0623C7)
Switch Configuration:
aaa new-model!aaa session-id commonip subnet-zeroip routing!ip dhcp pool datos network 10.2.100.0 255.255.255.0 default-router 10.2.100.1 lease 0 2!ip dhcp pool voice network 10.2.110.0 255.255.255.0 default-router 10.2.110.200 option 191 ascii "VLAN-A:3" option 128 ascii "Nortel-i2004-A,10.2.100.200:4100,1,5." lease 0 2!!!!no file verify autospanning-tree mode pvstspanning-tree extend system-id!vlan internal allocation policy
[Code]...
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Oct 23, 2012
I'm having some trouble with a 4510 Switch Line Card. I need some recomendations for troubleshooting it.We have some PoE phones connected to the card number 3. When those phones were restarted, they did not go up again. In order to discard wiring issues, we connected the phone directly to the card 3, and the phone did not go up. If the phone is connected to a different card, it goes up correctly.
Additionally, to restore the service, these phones were migrated to other cards, but when we disconnect the equipment, ports in line card 3 remain in an up / up state (and nothing is connected to those ports!!), and only reflect the actual state after restarting the port.What steps could I do in order to troubleshoot this issue?. What should I look for, or how do I discriminate the problem? Might it be a hardware issue, a PoE issue?
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Jan 2, 2012
All of our VoIP phones bounced (re-registered) in the middle of the work day and we do not know why. There is no maintenance going on at this time. The phones came back up right away. Upon further investigation, I only found one error message on our core switch (WS-6509 running IOS ver. 12.2(18)SXF13) and I'm wondering if that was the cause:
Jan 3 13:51:04.030: %SIBYTE-SP-5-SB_OUT_OF_RX_DSCR_CH1: Out of RX descriptors on mac 0 - channel 1 (count: 299)
I cannot find any other instances of this error message from the internet.
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Mar 19, 2013
I have a SUP720-3BXL that will not boot. It will get stuck at booting from the SP. It never switches over to the RP. [code]
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Jan 23, 2013
I have just received a new Cisco 3750G Switch from my parent company. When attempting to install the switch, I discovered that it will not boot to CLI, only to the bootloader. After using the command boot, the switch attempts to boot the most current IOS version, but fails, stating "error loading XXXXXXXXXX.bin".
Obviously, I just need to get a functional version of the IOS onto the switch to boot, but the problem is exactly how can I do that? All (or most) the commands with which I am familiar are unavailable in the bootloader, so all methods known to me fail. Is there a simple way (maybe using the copy command?) to put the .tar or .bin file onto the flash?
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Sep 25, 2011
We are facing issue with one of the module installed on cico 4506 swicth. All of a sudden cisco phones connected to that module went down and the messages logged on the console. [code]
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Apr 12, 2012
provide a sample Voice Vlan configuration for the Cisco 2960 POE switch to work with the Non-Cisco IP Phones?
Will these commands work? Vlan 2 is the new voice vlan, Vlan 1 is the data vlan.
mls qos
interface fastethernet 0/1mls qos trust cos switchport nonegotiateswitchport mode trunkswitchport trunk encapsulation dot1qswitchport voice vlan 2priority−queue outspanning-tree portfastspanning−tree bpduguard enable
vlan 2name voice
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Oct 30, 2011
Stuck at Initial stage CISCO pix 515e
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Dec 16, 2012
I have 6509 E. Actually what happen it last 3-4 times it reload its self and got stuck in rommon mode, i tried to boot it with boot by connecting a console cable on supervisor 720 2b. What and where is problem and why is stuck in rommon after reload.
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Jan 25, 2013
My Cisco seems to be stuck when it boots up, with the following:
Upgrade ROMMON initalized
And it goes on with self comperessing image then an OK but then it starts loading again all over.
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Oct 29, 2012
After a power outage our standby VSS switch has not recovered. The switch keeps cycling through its initialization and then powers off all modules.
The Dead peer detection is working and VSL links are up.
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Feb 17, 2013
I have a Catalyst 3560-X PoE that suddenly stopped working. I plugged in via console and below is the output I received. It scrolls constantly and I am unable to enter ROMMON mode or stop it from scrolling. I've read of a possible problem with the IOS version but I'm unable to verify due to not being able to stop the scrolling.
Switch uptime is 4 minutes, 4 seconds
cisco WS-C3560X-24P (PowerPC405) processor (revision A0) with 262144K bytes of memory.
Processor board ID FDO1522R2AY
[Code].....
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Jul 12, 2012
We did an upgrade from NX-OS 5.1.5 to 5.2.4 and found all M1 line card interfaces were stuck in initializing state for long time.'show module' status says ok. And we cannot execute shut/no shut command under the interface. N7K-M108X2-12L & N7K-M148GT-11 are the two M series cards. Only option was to downgrade back for the time being.
N7K01# sh int e1/1 | in down
Ethernet1/1 is down (initializing)
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Jun 2, 2013
I have configured my new 3850 using the command line and all works well. I logged into the web interface expecting to see device manager with a pretty image of the switch etc.
However I am presented with the Express Setup page and even if i fill in all of the details again and click submit then nothing happens and this is all I can get.
I have version 03.02.01SE software.
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Apr 27, 2011
I have a 7600 with ws-sup750 and when it boots it displays these errors:
Cisco IOS Software, s72033_sp Software (s72033_sp-ADVIPSERVICESK9_WAN-M), Version 12.2(33)SXH2a, RELEASE SOFTWARE (fc2)Technical Support: [URL]
Firmware compiled 07-Apr-08 22:12 by integ Build [100]
00:00:05: %C6K_PLATFORM-0-UNKNOWN_CHASSIS: The chassis type is not known.(0x6003)
[Code]....
Then it got stuck in rommon, i tried using a 7200 pcmcia card (I downloaded the 7600 IOS there) but if i do from rommon boot disk0:
it complaints with :open: file "c7200-atafslib-m" not found so, it doesn't boot.
Anything I can do to be able to boot this device ?
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Oct 15, 2012
I'm trying to configure LLDP-MED between a Cat45010+E Sup7 (IOS 15.1) and Polycom CX600 Lync phones. I have created and applied the correct network policy for the interfaces.
From these sites, I need to send all the correct TLVs or the phones won't respond: {URL}.
When a scour the config of the switch, I can't find any related configuration commands relating to the specific LLDP-MED TLV components which are enabled/disabled. Where are they hiding? I would like to confirm which TLVs are being sent by my switch and if they are matched to the phone. I can always use the DHCP method, put this is not preferred.
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Oct 22, 2012
We currently have around 150 2975 switches and have had problems with it them not handing out PoE power to the cisco phones and access points at random times. There is plenty of power left for the switch to use. We have at least 15 that will be running fine for about a week and then all of the devices that use PoE power will shut off and will not come back on until we reload the switch. If you console in there aren't any messages that pop up and if you look at the port it just shows on connected or will show IeeePD in the power inline. We have contacted Cisco TAC and they just RMA them.
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Oct 25, 2011
I am having an issue with this device after setting the ip address and rebooting. I have tried renaming the config.text file without success. I have also tried the steps mentioned here: [URL]
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Mar 25, 2012
we're facing a weird issue lately with a Cisco 2821.An interface stops responding after a few hours.The only way to bring it 'up' again is:
Hardcode: duplex or speed
or
shutdown -> no shutdown
there are no errors in the "sho interface" and no errors or entries in the log.
FastEthernet0/0/0 is up, line protocol is up
Hardware is Fast Ethernet, -
Description: Infopoint
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
[code]....
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May 8, 2013
sh fex
FEX FEX FEX FEX
Number Description State Model Serial
------------------------------------------------------------------------
105 FEX0105 Image Download N2K-C2232TM-E-10GE
sh fex
FEX FEX FEX FEX
Number Description State Model Serial
------------------------------------------------------------------------
105 FEX0105 Offline N2K-C2232TM-E-10GE
[code].....
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