Cisco 3825 ios 12.4 download

This occurs typically in the following inter-autonomous system scenario:. Workaround Use a configuration such as the following to remove extended communities from the CE router:. Symptom On Workaround There are no workarounds.

High CPU may be seen as well. Workaround No known workaround at this time. Conditions Client-initiated xconnect L2TPv2 sessions. Workaround The problem was not observed in Symptom Starting in calendar year , daylight savings summer-time rules may cause Cisco IOS to generate timestamps such as in syslog messages that are off by one hour.

Conditions The Cisco IOS configuration command: clock summer-time zone recurring uses United States standards for daylight savings time rules by default. The Energy Policy Act of H. Workaround A workaround is possible by using the clock summer-time configuration command to manually configure the proper start date and end date for daylight savings time. Conditions Happens when signal loopstart live-feed is configured under voice-port.

Symptom INFO request messages is generated properly on hookflash. Conditions This feature is broken in Workaround Currently there is no workaround. Symptom Malformed SSH version 2 packets may cause a memory leak, causing the platform to operate under a degraded condition.

Under rare circumstances, the platform may reload to recover itself. Workaround As an interim solution until the affected platform can be upgraded to a Cisco IOS software image that contains the fix for caveat. Symptom Packet loss counter varies randomly. Conditions Sequence number goes wild. Symptom The minimum after-hours login timer is 5 mins. It is too long. Customer wants to be able to deactivate the login in 1 min.

Conditions The problem is observed when after-hours call blocking is enabled. Conditions This problem occurs in IOS version Workaround There is no known workaround at this time. Symptom SPEs may hang after voice calls have been processed. Workaround There is no workaround to prevent the SPEs from hanging. Conditions When a policy map is applied on the mohican point to point subinterface. Symptom A router crashes when you enter the encapsulation dot1q vlan-id command.

However, the symptom is platform-independent. Symptom One or more of the following symptoms may occur. Conditions This problem is triggered when making configuration changes to an access list that is currently in use by a service policy. Workaround Disable the service policy before make changes to its components. Workaround There are two workarounds:. Conditions Crash happens immediately or after a few seconds of applying service policy on the gigabit ethernet and atm pvc.

The only commands executed after applying the service policy are write memory and show run. Symptom UTF8 localized characters can not display on new generation phones, ex , and etc. Conditions When using phone load later than 8. Symptom Router crashes after show policy-map command. Workaround : There is no workaround.

Workaround : Remove the dialplan-pattern. Conditions : When session-target is configured but outbound-proxy is not configured. Symptom : The voice-class sip dtmf-relay force rtp-nte command does not work.

As a result, rfc is not negotiated and hence DTMF is sent raw inband. With Symptom : Spurious memory access and traceback is encountered while resetting the SIP phone After configuring presence with Cisco CallManager Express. BLF speed dial entries, the status is not updated for the watched phones. Workaround : Use b2b mode. Symptom : Cisco CallManager Express does not send a 3xx message during call fwd if there was a call-transfer invoked before the call-forward happens.

Therefore, when a transfer is done before a forward to voicemail happens, the Cisco CallManager Express does not send a 3xx.

Conditions : The call goes through fine, and the caller can leave a message for B, but DTMF fails even if signaling shows that payload was negotiated for the SIP trunk. So if the caller wants to re-record or mark the message urgent, it does not work, although the message gets recorded. Symptom : Ephone DNs gets stuck in seize state under certain conditions, particularly under the following sequence:.

Conditions : The root cause of the issue was narrowed down to trunkdial flag that is part of the skinnyCB structure which is maintained per-phone. So, when DN2 goes offhook this trunkdial flag is set. So, all state transitions are ignored for DN1 when the call is being cleared because the trunkdial flag is set for the entire phone rather than the specific DN.

Make the trunkdial flag per-DN specific rather than per-phone. Workaround : A workaround is to ensure that the ip rtp priority or ip rtp reserve command is removed before deleting the interface. Symptom : Cisco IOS router running The symptom is: show proc mem 1 output seeing the first allocator's memory count is keep growing, and never decrease. Specifically when the router is doing decryption, then send the decrypted packet to BVI interface.

Symptom : NAT overloading from inside source address to an outside interface may fail. Conditions : The symptom was seen when translation ports were specified in an access-list associated to a route map and a second static NAT translation condition.

Traffic which should have been NATed via the primary NAT overload statement failed because of the specified translation ports being used in second NAT translation condition.

This occurred even though the traffic to be NATed did not meet the conditions of the second static NAT translation condition. Workaround : Remove the ip nat inside source interface X overload statement and then re-add it. The AT translations will then worked correctly until the next router reload.

Conditions : If another call is dropped during trunk dialing, the DN for this terminated call would move to seized state. To work around the one-way audio issue, the call needs to be transferred out and then transferred back. This causes them to be dropped. Conditions : Symptom is observed in IOS version It only affects packets which are not multilink encapsulated because of the bundle only having a single link.

Workaround : Either disable multilink PPP, or use the ppp multilink fragment delay interface command to force multilink headers to be applied to all outbound packets. Symptom : A Cisco router may reload unexpectedly with a bus error exception. Symptom : A serial link goes down. The CEM interface will not come up. Symptom : IP address removal from a physical interface. Workaround : Use cryptomaps, wit vtis, to configure the ip address on the physical interface and re attempt connection.

Conditions : This problem occurs when the router has IPS Intrusion Prevention Systems configured, and one or more attack signatures has the denyFlowInline action enabled. Symptom : The bandwidth of a multilink group interface that is down does not reflect the actual bandwidths of the links that are configured as members of the multilink group.

In earlier versions, the bandwidth is restored to Kbps. Conditions : This symptom is observed when the multilink interface is down. The bandwidth is correct when the multilink bundle is up.

However, you can still turn routing on. For example, configure the multiple default routes pointing to the dialer interface s as the next hop. Symptoms: After the router is up and running, issuing "no shutdown" under the wlan cotnroller interface causes tracebacks sometime. This is not easily reproducible. Symptoms: This caveat fix enhances the x25 idle and x25 map interface configuration mode commands to support seconds granularity for X.

Workaround: Use the enhanced x25 idle command with seconds option:. Use the enhanced x25 map command with seconds option:. Symptoms: The following error and traceback messages are shown on the console:. Workaround: Configure the interface mtu command to the required value.

Symptoms: The hard drive has been removed from the boxer volant converted to ireless LAN Controller Network Module but the show diag command still refers to daughter card and calls it unknown. The successful exploitation enables an adversary to reset any established TCP connection in a much shorter time than was previously discussed publicly. Depending on the application, the connection may get automatically re-established. In other cases, a user will have to repeat the action for example, open a new Telnet or SSH session.

Depending upon the attacked protocol, a successful attack may have additional consequences beyond terminated connection which must be considered. This attack vector is only applicable to the sessions which are terminating on a device such as a router, switch, or computer and not to the sessions that are only passing through the device for example, transit traffic that is being routed by a router.

In addition, this attack vector does not directly compromise data integrity or confidentiality. All Cisco products which contain TCP stack are susceptible to this vulnerability. Symptoms: When in bootloader mode, if an invalid entry is entered, there is no available option to change the existing entry without rebooting the controller, and entering the correct entry again in bootloader mode.

This caveat includes the following condition when option 3 is used in the bootloader menu to update the corresponding values. The example below illustrates this condition:. The following sections describe the documentation available for the Cisco series routers. Typically, these documents consist of hardware and software installation guides, Cisco IOS configuration and command references, system error messages, feature modules, and other documents.

Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online on Cisco. The following documents are specific to Release They are located on Cisco.

Hardware installation guides, configuration and command reference guides, and additional documents specific to the Cisco series routers are available on Cisco.

Feature Navigator is a web-based tool that enables you to quickly determine which Cisco IOS software images support a particular set of features and which features are supported in a particular Cisco IOS image. Feature Navigator is available 24 hours a day, 7 days a week. To access Feature Navigator, you must have an account on Cisco. If you have forgotten or lost your account information, e-mail the Contact Database Administration group at cdbadmin cisco.

If you do not have an account on Cisco. Workaround Use modem. Symptom Traceback observed while configuring rel1xx require CLI. Conditions Traceback can be observed after configuring rel1xx require CLI with a string of 49 characters. Symptom The system prompt may be shown during Hlog out. Conditions When an agent or all agents log out, the logout message and system message may be shown every 30 seconds.

Conditions If the calls come in a PRI or FXO interface, and a user on an active call on the Octoline puts the call on hold while there is an incoming call, it will automatically answer the incoming call. Approximately 13 seconds later the second call is dropped. If you want to put a call on hold while a new call is coming in, you must wait until the incoming call stops ringing.

Symptom Lost DM connection a few minutes after bidirectional traffic started. Conditions DM configured at speed K, Smartbit configured with bytes at rate pps.

Workaround Use lower speed k. Workaround Use a minimum MCR value no less than the granularity used by the router. Conditions In the configuration mode, this always happens. Symptom A Cisco router may crash when unconfiguring IPv6 nodes. The traceback is produced after configuring the no ipv6 unicast-routing command.

Conditions Problem is observed when NAT is enabled while router is configured to pass multicast traffic. Ingress interface contains analysis-module monitoring CLI command.

Conditions PVC is configured with encapsulation aal5ciscoppp virtual-template 1. Symptom Software-forced reload occurs on Cisco router. It does not come up again. This vulnerability could allow valid users to retrieve or write to any file on the device's file system, including the device's saved configuration and Cisco IOS image files, even if the CLI view attached to the user does not allow it. This configuration file may include passwords or other sensitive information.

Devices that are not specifically configured to enable the Cisco IOS SCP server, or that are configured to use it but do not use role-based CLI access, are not affected by this vulnerability. Workaround There are no workarounds available for this vulnerability apart from disabling either the SCP server or the CLI view feature if these services are not required by administrators. Workaround Have VG endpoints registered with first node.

Further Problem Description : The activation of the callback is successful. Erasing the nvram filesystem will remove all configuration files! Bad configuration memory structure -- try rewriting. It is seen only when XOR and XTO are on the same side, if they are on different sides, the call transfer goes through fine. Symptom Memory leaks are observed in "gk process" when memory lite is disabled. Conditions When no memory lite cli is configured from the global configuration mode.

Conditions Configure memory lite cli from the global configuration mode. Symptom During the firmware upgrade on E modem using microcode reload command, it is found that the modem upgrade process will stop. Conditions Any firmware upgrade to a newer version fails. Workaround Use the laptop based watcher to upgrade. Further Problem Description : There are two issues associated with the failures:.

The current enzo only uses management channel instead of data channel. The locking code interferes with the firmware upgrade code during the upgrade process, thus the upgrade fails. Observe the LED behavior. Conditions This happens whenever the call gets connected immediately after sending Alerting response or Progress response to the caller.

Symptom A call is disconnected during call resume in a sip-h call. Conditions This symptom is observed under the following conditions:. Received call resume ReInvite. Capabilities exchanged on H leg. Sent OLC. Symptom show call active voice command may display incorrect value for codecbytes. Symptom Outgoing of router FXO loop-start call randomly disconnected after far-end answered the call.

Conditions The far-end is able to generate reverse-battery signal when called side answered the call. Also, supervisory disconnect was configured to either anytone or dualtone. Workaround Use supervisory disconnect signal if possible. Symptom Call will be disconnected with 2 ipipgws. Conditions The media forking feature used to send stream to ASR server will fail. Workaround This problem is introduced by cvp based media forking feature in Pi Symptom Call over the FXO loop-start cannot be established since gateway's dsp detects reverse-battery signal.

Conditions The far-end is able to generate reverse-battery signal when called side is ringing. Also, supervisory disconnect is configured to either anytone or dualtone. Symptom CME version 7. Ephones register after the initial fail over to SRST and configuration is provisioned by the system, but the preferred codec used is Gulaw instead of Gr8.

However if the system is rebooted after the initial fail over, the phones register with correct codec. Workaround Reboot the system once the configuration ephone and ephone-dn is provisioned in the system. Show voip rtp connection shows one single ip address as the local address in the cube. Conditions Occurs with single point to point or multipoint calls regardless of CTS model.

This occurs only when the CTS resides in a different subnet than the interfaces on the cube and the configuration pass- thru content sdp is used in the voice service voip sip menu. Workaround If the network architecture or policy permits use the Cisco IOS bind command to bind media to single loopback address. This address then can be advertised to connecting networks so that media is routable to the CUBE loopback. Further Problem Description : This issue does not affect the signalling side, just the media.

The command pass-thru content sdp was introduced in YB to allow flows that require a G codec such as music on hold. Removing this command can cause disconnects on Hold and Resume. Symptom When call is disconnected, shared-line resource is not released. They cannot register with CME. Conditions When the phone is configured. The router does not even synchronize with its own internal clock. Conditions Need to have both ntp master and ntp server configured. Workaround If configuring only "ntp master" or "ntp server", the router will synchronize.

The FXS phone goes off-hook and back on-hook. The IP phone then hangs up. The next call placed will not ring the FXS port. Place the call again and the FXS will ring properly again.

Call comes into shared line. IP phone answers. While the line is in-use, the analog phone goes off-hook, then back on-hook. IP phone ends the call. Conditions The issue is seen on Workaround For the first issue there is no known workaround other than placing another call to the DN after the issue is seen, or by not having the FXS phone go offhook during active IP phone calls. Further Problem Description : Note that the second scenario is not a support solution.

The call connected but audio path did not established. Conditions The call has to originate from a SIP phone thru gateway to another cme sccp endpoint and transfer back to a sccp endpoint of original cme then xfer again to another sccp endpoint within the cme.

After the cross cme call and 2 xfers, the error message shown and observed audio path failed. This results in a remote denial of service DoS condition on the affected device. Workarounds that mitigate this vulnerability are available and are documented in the workarounds section of the posted advisory. By manipulating the state of a TCP connection, an attacker could force the TCP connection to remain in a long-lived state, possibly indefinitely. If enough TCP connections are forced into a long-lived or indefinite state, resources on a system under attack may be consumed, preventing new TCP connections from being accepted.

In some cases, a system reboot may be necessary to recover normal system operation. To exploit these vulnerabilities, an attacker must be able to complete a TCP three-way handshake with a vulnerable system. This additional vulnerability was found as a result of testing the TCP state manipulation vulnerabilities.

Cisco has released free software updates for download from the Cisco website that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available. Symptom Memory leak was found after voice stress testing on a Cisco Testing was performed for 2 hours, and call duration was 60 seconds. Symptom During 7xi2b monitoring c10k crashed at igmp-process.

Note that WFQ is the default for some types of dialer interfaces. Workaround Remove "police cir percent" from child queuing policy "cbwfq- sip".

Alternate Workaround: Use a different child-policy with the same. Define a second policy-map, say "cbwfq-sip1", with the same configuration. Symptom A policy with unsupported queuing features is allowed to attach to sessions. It may cause potential issues that require a reload to recover. Further calls attempted through this port once in this state will result in the following error messages being displayed:.

Jan 8 Workaround Once in this state, the router will need to be reloaded to recover. The use of this command for stcapp controlled FXS ports does not seem to provide any benefit but can lead to the port getting into this hung state.

However, when the "software mode"is used, meaning when the two member links 2 T1s are across two different PSs, then the downstream line rate drops down to 2 Megs the most. Symptom Unable to create sessions and ACLs. Symptom SCCP phone can't act as conferencing controller.

Workaround The problem doesn't exists if there is no back-to-back NAT setup. Symptom Trace back is shown when show crypto session is issued. Workaround Use commands show crypto isakmp sa and show crypto ipsec sa.

Symptom Crash with the following message:. Symptom A router reloads continuously on switching off one of the redundant power supplies. Symptom Router may crash while unconfiguring "source template test" in interface configuration mode. Symptom Router may crash and reload intermittently with TLB load or instruction fetch exception. Workaround The workaround is to temporarily remove the NTP servers from the config with:.

Symptom A small memory leak may occur. The user will hear fast-busy signal when attempting to make inbound or outbound calls from or to that port. 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 donot 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 folowing conditions:. Workaround Remove the 'present-call idle-phone' configuration from the ephone-hunt configuration and do not use overlaying. Symptom Wireless IP phone doesnot 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 destinationpattern 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. Symptom Wrong primary-phone observed after re-configure primary-dn of the ephone. Conditions Wrong primary-phone observed after re-configure primary-dn of the ephone. Symptom and phones going into DND mode in Connectd state.

Conditions User getting incoming call on and phones. Since the softkeys donot update fast, if the user presses DND immediately after going into connected state then after going onhook the user phone would stuck in DnD mode. Conditions The problem exists in Symptom External caller gets transferred from CUE to an internal DN number, and the ringback sent to the caller is distorted because of jitter.

Symptom Jitter or voice qality issue may occur. Conditions If there are a lot of ephones, say there are 50, monitoring same park DN, there will be same sccp messages sent to these 50 phones respectively in few mili seconds. Symptom Version Symptom MGCP srtp-package option is not available in c platform. Conditions This occurs on Cisco only. Fixed Cisco IOS software listed in the Software Versions and Fixes section contains fixes for all vulnerabilities addressed in this advisory.

There are no workarounds available to mitigate the effects of any of the vulnerabilities apart from disabling the protocol or feature itself, if administrators do not require the Cisco IOS device to provide voice over IP services. The Secure Shell server SSH implementation in Cisco IOS contains multiple vulnerabilities that allow unauthenticated users the ability to generate a spurious memory access error or, in certain cases, reload the device.

Devices that are not configured to accept SSH connections are not affected by these vulnerabilities. Symptom The following recurring kron schedule fails and gets removed after the first run. Conditions enter the following configuration commands: kron occurrence tcl in 1 recurring policy-list tcl! Conditions Router needs to have dns server configured and listen to udp port 53 conf t ip dns server end.

Symptom If a large name string is used when configuring the command "security crypto-profile" under the l2tp-class submode, we could have a buffer overflow which may crash the router. Conditions This problem only occurs if a large name string is used in the "security crypto-profile" command.

Workaround Disable the following configuration on the router: voice hpi capture buffer size voice hpi capture destination filename. The leak rate appears to be about 1. Workaround Administratively shut down the BRI interface. Symptom Routers that have the ability to use the optional Conditions Cisco routers that have the 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 Multicast audio to the cuts out after a few seconds and will not resume. Symptom The caller id on the transfer-to is not updated with the transferee after the transferor commits the transfer. Conditions When the transfer-to answers the call from the transferor, the caller id on the transfer-to shows that the call is from transferor. After the transferor commits the the transfer, the caller id should be updated with the transferee.

This caller id display issue can be observed if the transferor DN is shared by the transfer-to. Conditions This issue is seen in Workaround No workaround. Symptom Wrong isdn cause code comming while making call to wrong destination. Conditions While call made to wrong destination number. Workaround none. Symptom Modem calls fail to establish when 'isdn tei-negotiation firstcall' configured on ISDN interfaces. Since, the ISDN L2 is not activated until the first call is initiated which inturn means there is no signaling interface available, which results in call failure.

Symptom UC crashed when system test was executed with debug logs enabled. Conditions UC crashed when system test was executed with the below debug logs enabled. Symptom Cisco may crash when there is an incoming trunk call. Dialing a number which requires waiting for interdigit timeout to route such as a variable length international number. This is done by configuring "timeouts interdigit 16" under each voice port.

OR decrease the CallManager interdigit timeout to 9 seconds to be less than the VG port's 10 secs. This is done by changing the CallManager service parameter T Timer value to msec 9 seconds. Conditions Occurs when CME is enabled.