Cisco Switching/Routing :: 400 Some IP Phones Are Not Getting Registered
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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Mar 10, 2013
I try to connect a AP3502 to WLC 5508 7.3 the AP obtain @IP of WLC, but no more than that.
The dhcp server is hosted to WLC the WLC server is configurerd with 1 interface Mgt with AP dynamique mode.
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Nov 16, 2011
Cisco LMS 4.0: Is able to forward SNMP traps (ver. 2c) received from device registered with it to a configurable IP address? • Traps contain the original Device Agent IP to identify the source (Not the IP of LMS)?• Is possible to configure one logical IP address or Domain Name for redundant LMS:Cisco Security Manager 4.1:Is able to forward SNMP traps (ver. 2c) received from device registered with it to a configurable IP address?• Traps contain the original Device Agent IP to identify the source (Not the IP of Security Manager)? • Is possible to configure one logical IP address or Domain Name for redundant Security Manager?
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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 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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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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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 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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Jan 4, 2012
I have a CUCM BE environment with a number of remote users with 8961 phones connecting to an ASA 5501 via AnyConnect. The phones register fine and can make inbound/outbound calls as well as four digit dialing to other users at the corporate site.
The problem is when a remote user tries to four digit dial another remote phone. The called phone will ring but there is dead air once answered and then the line goes dead.
This sounds like a routing issue to me. How to get AnyConnect clients to be able to reach each other?
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Mar 1, 2012
I have 7 POE switches that have ESI IP phones attached. I have two VLANS, 1 and 2. VLAN 2 is used for voice and is defined in each switch.The ESI IP phones connect to my POE switch ports and the pc attaches through the ESI IP phone.
I have had voice quality issue between floors in my building. Talking to others on my floor via the IP phone, there are no voice quality issues. [code]
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Nov 6, 2012
the customer has CUCM in the inventory database of LMS 4.1. He has all accesses from LMS to CUCM. One phone 7961 is seen in the UT report. When the customer click on the CUCM in the inventory - there is no IP phone registered in the CUCM.
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Nov 6, 2012
the customer has CUCM in the inventory database of LMS 4.1. He has all accesses from LMS to CUCM. One phone 7961 is seen in the UT report. When the customer click on the CUCM in the inventory - there is no IP phone registered in the CUCM. What is wrong?:-( See the attachment.
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Jun 27, 2012
I have a problem with my SIP trunk config. I can receive calls, but unfortunately I cannot dial. I found out why, and it is because I have one main registered number from TISP, and I am trying to dial with the phone number from the block. That is why I am receiving unauthorized messages when I enable debug ccsip messages. I called TISP and they said that I should always use main number and to send my number via P-Asserted id. or via P-Preferred Id. how to configure this ? I found only this conf.
Commands:
dial-peer voice tag
viace-class sip asserted-id pai or ppi
I tried with this but it didn't work. I don't know where to say what I need to insert , and instead of what .
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Oct 10, 2011
Any OID to determine the number of registered AP's on a WLC (specifically the AIR-CT2504).
I've got both of the Airespace MIBs and have browsed through them but I can't seem to find the correct location. I can find a list of all of the AP's registered but our monitoring software doesn't have the ability to 'count' that index. As such, I'm looking for a count/summation of the total number of registered AP's via SNMP.
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Mar 19, 2013
how I could possibly get all my e-mails of which I send my clients through my outlook to be registered on my Home-outlook, Office-Outlook and my mobile-outlook? like on the server? something similar to when you open yahoo or G-mail from any given location you can view your sent Items,inbox etc.
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Apr 16, 2012
We have a Cisco 4404 WLC and and about 70 Cisco 1131 APs. I am very new to the Cisco WLC and I need to know how to view its AP registration and unregistration logs. We have a AP that has unregistered and we can't seem to find what switchport it was attached to. It would be useful to know the IP address and ideally any CDP information it had. Unfortunately you can only view this information in the WLC if the AP is registered, but at this point it is not.
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Mar 14, 2012
I have a Inspiron m5010 laptop and I'm getting the issue where "wireless configuration- notification dll has not been registered, program will not work correctly." How to find the drivers and what to download?
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Jan 30, 2012
I have deployed the NAC Solution. NAC Software version = 4.8.2 and Agent version = 4.8.3.1.The solution is working fine but the Cisco IP Phone CP9951 is getting restart after applying NAC (or port profiles) at some time interval. Time is not fixed but it doesn't seem stable. Sometimes, it is just disconnected while using the Phone and sometimes when you log-off or restart the PC.The Cisco IP Phone CP8945 is working fine in all cases.We are getting the message of "Phone not registered" and active call is getting disconnected.
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Dec 30, 2011
I got a brand new wireless router and made it the first in line with my cable modem. This is necessary because I want to take advantage of all the features in the new router. I put the RTP300 behind the first router and switched off DHCP and connected the internet port into one of the 4 regular ports on the back (typical configuration for a pass through router).So everything works perfectly for any computer attached to the router (they can access the internet etc). The only problem I have is the VOIP doesn't work. If I pick up my phone it says this device is not registered to a phone number.
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Dec 8, 2011
I used WPS on my DIR-655 Rev B1 FW 2.03NA to register a Brother HL-2270DW Wifi laser printer and my Mac can never wake it up to print. It always works fine from all my Windows machines.It appears as xxx.xxx.xxx.6 on my network. But the router only shows its IP as 0.0.0.0 on the STATUSWireless page and I can't find any way to change that. My assumption is that the Mac can't find it because of this, but I'm not an expert on WPS.Maybe I should take it out of WPS and just assign it a fixed IP using DHCP Reservation. Or is there another fix? I haven't ruled out the Brother OS X printer driver, but it and the printer's firmware are both up to date.Two odd things:
1. I can ping the printer from my PCs but the Mac can't find see in and it's not a Firewall issue.
2. I can see the brother printer in Finder's Shared devices: so it sees it but refuses to interact.
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Jun 20, 2011
I' trying to access my Gmail account from my IP Phone (Cisco IP Communicator, don't have an actual device at the moment). The services work greatly (I tested berbee services and they work fine) I came across the Gmailcheck service. [URL] I downloaded all the files and added the "statusMsg.php" in my services list. Now when selecting Gmailcheck on the IP Communicator, it just shows the PHP code script : No interface, no gmail...
So I'd like to know : How to do to make this PHP script work ? Or is there a better way to access my Gmail accounts ?
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Jun 14, 2011
I have a new install with 3 SF300 switches, setup as vlan 2, the switch connected directly to the 2901 router has no problems, plug in a phone and it gets an IP, but if connected to either of the two swtiches behind the first switch, they do not get an IP. I am seeing the DHCP request hitting the router, and the router sending the IP to the phone, but it never gets the IP.
*Jun 15 10:40:20.040: DHCPD: client's VPN is .
*Jun 15 10:40:20.040: DHCPD: Sending notification of DISCOVER:
*Jun 15 10:40:20.040: DHCPD: htype 1 chaddr 40f4.ecef.bded
[Code]....
All ports are setup as trunk on vlan 2 including the ports that connect the switches together. Not sure what the problem is, but they are going live tomorrow and only have 48 out of 120 phones.
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