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Learn More - opens in a new window or tab. Conditions The alignment errors were seen as we were accessing writing into non-aligned address. Symptom In Conditions Crash only observed when interface was up before the PVC removal. Symptom The command is added automatically to the voice-port configuration: input gain auto-control In addition, this command can not be removed by the "no input gain auto-control -9".
Conditions This issue is seen after upgrading router from Workaround No known workaround. This can happen during the termination of an SSL-based session. The offending packet is not malformed and is normally received as part of the packet exchange. Aside from disabling affected services, there are no available workarounds to mitigate an exploit of this vulnerability.
Conditions This issue is seen on Symptom Upon certain configuration changes, the running configuration might not be able to be displayed and the following error message might appear:. Conditions CVTA is being used with a phone running firmware 8. Workaround Downgrade firmware to 8. Conditions This issue is seen in the image This causes memory leakage. Conditions Loading recording utterance failure is an error case.
Symptom For a VXML application, if the calling document and called document of a subdialog shared the same root document, the tree structure used for the root document will not be released after the call session is finished. Symptom BVXML session is not freed with the disconnect event returned from subdialog, and the event handler has exit tag. Symptom A Cisco access server may run out of free processor memory. Increased memory utilization will be seen in the Dead pool. When a VXML application is configured with fetchaudio, the fetchaudio playout fails after user disconnect.
The fetchaudio should have been removed from the prompt list, but it was not. This causes the session not to be freed when the application is finished. Workaround A reload will temporarily free the leaked memory. Transcoding is done between Gulaw and Gr8 codecs. This is seen only with a Fast Start call both with H Tunnel enabled and disabled , and the call passes with a slow start call. Symptom Directory numbers that are configured in local directory of CME are not being shown in Received Calls directory.
The number and name shows while call in Ringing state but is not showing during Connected state. Conditions Inbound Call. Symptom Cisco IP Phone placed on hold hears fastbusy instead of tone-on-hold. Workaround This behavior was introduced in Conditions Traceback observed during a modem call.
Conditions Traceback observed even after single e1-r2 call. Symptom H calls fails when non-default signaling port is used in dialpeer session target. Conditions Failure is seen only when any specific signaling port is configured. Workaround Configure only IP address so that it picks the default signaling port.
Symptom Routers that have the ability to use the optional Conditions Cisco routers that have the Conditions multicast traffic across the wireless interface, though multicast routing is enabled and otherwise is configured normally.
Wireless hosts cannot pass multicast traffic between each other, and multicast traffic from the wired network will not be transmitted out the wireless interface. Symptom Router halts with an assertion error. Conditions The failure usually occurs while closing connections. Symptom When this problem occurs, the tone remote control functionality does not work and voice becomes distorted due to the codec mismatch.
Workaround Configuring the following CLI should prevent the crash:. Symptom The Watch button is not lit on if no watched phone for this watched DN. Ring back tone is heard when calling to this DN.
Conditions No phone, no matter registered or not, is configred with the watched DN. Conditions Using IOS image with feature variable more than 50 characters. Symptom Traceback observed when configuring credentials CLI under sip-ua. Conditions This happens when user configures credentials CLI with username length more than 32 characters.
Symptom There will be traceback on configuring mls qos cos pass-through dscp in supporting interface mode. Conditions Configuring "mls qos cos pass-through dscp" in the interface that supports the functionality.
Workaround Currently, the CLI is not supported in most network modules, and thus, is invisible to the users.
Further Problem Description: Due to the buffer overflow, there will be traceback when configuring the QoS in the supporting interface. Currently, the CLI is not supported in most network modules, and thus,is invisible to the users. Conditions This problem should not affect most mail clients because Cisco is not in violation of any specifications.
Symptom router crashes due to signal Conditions Crash happens while transfering calls. Symptom Periodical crashes on with CME features.
Conditions When "callmonitor scan" is configured. Workaround Turned off "callmonitor scan". DNS engine. This vulnerability may cause a router to crash or hang, resulting in a denial of service condition. There is a workaround for this vulnerability. Workaround There is no workaround. The rest of the file systems have no problem i. Conditions Load routers with problem releases. Symptom Once policy map is configured and bandwidth is exceeded while dividing amongst the classes, re-configuration of the policy map is not possible.
Conditions Create a policy map, exceed the bandwidth amongst the classes e. Workaround Don't exceed the bandwidth while configuring the policy map. Workaround Create a view that excludes the ipRouteTable:. This view restricts the objects that the NMS can poll. Symptom A router may crash when you configure an access control list ACL that has at least ACEs about nodes that is used in policy maps that are already applied to an interface or when you boot the router after having made the configuration change.
The router keeps dropping SNMP packets. The log shows that the packets are dropped because of the input queue being full. Although the utilization is sometimes high, this could not be the root cause, as the router keeps dropping packets regardless of the current utilization. Apply this view to the RW community string. Symptom Transparent bridging into DLSw does not work. The following messages are displayed:.
Workaround For a workaround, all transparent bridging commands related to dlsw can be replaced with DLSW Ethernet redundancy. After this much time has passed, polling the rttmon mib for the probe statistics will cause the router to reload. Then the problem will not be seen again for another 72 weeks. Symptom Device running Workaround There is none. This error message can be verified in show logging output. Conditions ip http server is configured. Workaround Configure no ip http server. The switch functionality is not affected by this error message.
The problem is cosmetic. Workaround Use H Faststart. If incoming H calls need to be slow-start for video calls and calls to voicemail need to be faststart, enable H. Conditions 1. Conditions This is seen on a router running Symptom EM login username and password may be set to random values in process stack in case the actual input from the phone is in an invalid format. Once they are in this stuck state, an incoming call to them will not ring the line, there will be no output in debug vpm sig.
The problem is likely to occur when the pots leg is disconnected before the voip leg. If this occurs the port can go into this "stuck" state.
Any subsequent calls will not ring the fax machine on this port. Removing the SCCP config from the ports will prevent it from happening too. In this type of attack, a malicious user can cause the IOS DNS server to accept a forged answer that associates a name with an IP address chosen by the malicious user. This answer ends up in the cache of the DNS server. Conditions The above symptom is seen on a router loaded with The use of bit 0x20 in DNS labels to improve transaction identity is also recommended.
This is a security issue. Symptom A busy tone is not heard when a message is received before a 4xx busy message. The bug affects both Workaround A patch is required, forcing the media off when a busy message is received. Successful exploitation of this vulnerability may result in the execution of arbitrary code or a Denial of Service DoS condition on an affected device.
Symptom CFwdAll incorrectly appears after night service is disabled. On the same dn as CFwdAll was on, night service is enabled and disabled. Workaround Remove CFwdAll via softkey or reload the router.
Symptom Ping fails over the atm interface while applying Quality of Service. Conditions When we configure the qos on ATM interfaces on the back to back connected routers the ping fails. Conditions If voice codecs are the same, but DTMF relay settings are different then no transcoding is done.
But when voice codecs are different then transcoding is invoked, and DTMF is transcoded from rtp-nte to in-band. Symptom After security is enabled locale in the phone cannot be changed. Conditions Customer cannot leave security enabled and configure their locale on Cisco and Cisco do not present the issue as they have the firmware locally stored flash. Symptom When an ephone hunt-group is configured with 'present-call idle-phon', the ephone hunt-group skips the DNs which are configured as overlay.
Conditions The problem is observed under the following conditions:. Workaround Remove the 'present-call idle-phone' configuration from the ephone-hunt configuration and do not use overlaying. Symptom Wireless IP phone does not download the tones. So phone cannot generate the query for the relevant network locale file.
Workaround Complete the following steps to resolve the problem:. Along with User defined, we also need to define inbuilt network locale. For example:. Do not run 'create cnf-file' as it will again override with the system defined parameters. Reboot the wireless phone. In case if you have issue in 'create cnf-file', then ensure to repeat all the steps mentioned above again.
Symptom Answering a trunk call transferred from another phone is automatically put on hold and cannot be resumed. Conditions The call originally came in on a trunk dn and is transferred to another extension on a phone sharing that trunk. Trunk optimization takes place. Symptom does not show the parked number when the call is parked. Extension-A completes the transfer by pressing transfer button. The SIP trunk dial-peer has same destination pattern as pots dial-peer, and pots dial-peer needs to have preference lower than SIP trunk dial-peer.
Workaround Use "supplementary-service sip refer" or remove pots dial-peer with same destination pattern or make SIP trunk dial-peer preference lower than pots dial-peer. Symptom One way audio after transfer. Workaround Try to use same codec.
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All submitted content is subject to our Terms Of Use. General discussion. Hi to all TechRepublic people! My problem are the ff: 1. Where can I can get the new IOS 3.
What is the IOS new version that the cisco 4.
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