Cisco 2800 series ios download

These release notes describe new features and significant software components for the Cisco series routers that support the Cisco IOS Release These release notes are updated as needed to describe new memory requirements, new features, new hardware support, software platform deferrals, microcode or modem code changes, related document changes, and any other important changes. For a list of the software caveats that apply to the Release The online caveats document is updated for every maintenance release.

This section describes the system requirements for Release Cisco IOS Release For descriptions of existing hardware features and supported modules, see the hardware installation guides, configuration and command reference guides, and additional documents specific to the Cisco series routers, which are available at:.

DSP-based conferencing allows more parties and more functionality than software-based conferencing which only allows three parties in a conference and no meet-me functionality.

For more information go to:. For further information go to:. The Cisco universal serial bus USB eToken 64KB smartcard support feature enables device authentication and simplifies the deployment and secure configuration of Cisco routers. It uses smart card technology in a USB form factor to facilitate the authentication and configuration process. The token provides secure access to the route.

The token and a PIN are necessary to access the configuration, keys, and credentials. These USB modules can be used with a supported Cisco access router for the following functions:. The USB eToken uses smart card technology to protect a small area of memory. When the USB eToken is removed, the router erases the credentials from running memory, ensuring that they cannot be retrieved from the router itself. It is not necessary to use a bootloader image from the compact flash device. The increase of the Annex M upstream data rate is achieved by using some of the tones that were previously used in the downstream data rate in Annex A.

As a result, downstream data rates are decreased in Annex M. The ADSL training log generation command, dsl-enable-training-log , is enhanced to specify the time when to capture a log file. This enables the training log to record firmware debug messages. The G. It supports 1-Pair groups or 2-Pair groups. It combines four ports of data into one line or two lines with either inverse multiplexing over ATM IMA groups or M-pair groups, and it supports 1-Pair groups or 2-Pair groups.

VPN routing and forwarding VRF divides a physical router into multiple logical routers, each having its own set of interfaces and routing and forwarding tables. For more information, see:. Access Point Link Role Flexibility allows access point radios to operate in a combination of radio roles, such as access point root, bridge root with or without clients , bridge nonroot with or without clients.

This provides a more flexible deployment scheme to support the various applications requirement. This feature allows an IEEE Combining it with This helps protect the network from attack by machines with insufficient antivirus posture. Performing posture validation at the edge maximizes the portion of the network which is protected and allows posture validation to be performed within a VLAN.

This feature allows the access point radio to act as a client to another Cisco or Third-party access point. See caveats for known issues. The wireless non-root bridge allows the access point radio to operate as the remote node in a point to point or point to multi-point network.

See caveats for information on antenna support. The wireless root bridge role provides support for both point-to-point or point to multipoint bridging.

Successful exploitation of the vulnerability may result in a reload of the affected device. A mitigation for this vulnerability is available. See the "Workarounds" section of the advisory for details. Cisco has released free software updates that address these vulnerabilities. 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.

To exploit this vulnerability an offending IPv6 packet must be targeted to the device. Packets that are routed throughout the router can not trigger this vulnerability. Successful exploitation will prevent the interface from receiving any additional traffic. Only the interface on which the vulnerability was exploited will be affected.

Cisco is providing fixed software to address this issue. There are workarounds available to mitigate the effects of the vulnerability.

Workarounds are available to mitigate the effects of these vulnerabilities. Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available. The first vulnerability is a memory leak that occurs as a result of PPTP session termination.

The second vulnerability may consume all interface descriptor blocks on the affected device because those devices will not reuse virtual access interfaces. Cisco has made free software available to address these vulnerabilities for affected customers. There are no workarounds available to mitigate the effects of these vulnerabilities. These vulnerabilities pertain to the following protocols or features:.

Fixed Cisco IOS software listed in the Software Versions and Fixes section contains fixes for all vulnerabilities mentioned 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.

Symptom While doing h to sip interop, the router is crashing due to Mempool corrupt. PhoneA calls PhoneB.

PhoneB answers. PhoneB presses transfer. PhoneB presses NewCall. PhoneB dials PhoneA. We see PhoneB drop out of the call with no error indications or tones.

We see PhoneA display one call on hold and the other call incoming. Hang up PhoneA. PhoneA rings briefly when you put it on hook. Workaround There is no workaround. Symptom Router drops valid packets, causing SIP call to fail. We can also see crashes on the Standby router if the Active interface is brought up. Workaround There is no workaround. Symptom A Cisco router may face ping failure between provider and customer networks. Symptom With Reverse Route Injection RRI configured with the reverse-route command, if the crypto map is applied to a multi-access interface for example, ethernet , then egress traffic may fail when the router cannot populate an ARP entry for the crypto peer address.

Conditions The symptom could occur when the upstream device does not support proxy arping. Symptom The H. Symptom Certain crafted packets may cause a memory leak in the device in very rare circumstances. Workaround Disable SIP if it is not needed. Symptom The VTP feature in certain versions of Cisco IOS software is vulnerable to a locally exploitable buffer overflow condition and potential execution of arbitrary code.

Conditions The packets must be received on a trunk enabled port, with a matching domain name and a matching VTP domain password if configured. The first vulnerability is in the translation of Session Initiation Protocol SIP packets, the second vulnerability in the translation of H.

Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. Advisory Bundled Publication at the following link:. Repeated attempts to exploit this vulnerability could result in a sustained denial of service DoS condition. Cisco has released free software updates that address this vulnerability. The H. There are no workarounds to mitigate these vulnerabilities other than disabling H. Two separate Cisco Security Advisories have been published to disclose the vulnerabilities that affect the Cisco Unified Communications Manager at the following locations:.

Conditions When outgoing call is done using queuing-dn. Symptom Router crashes or spurious memory access can be seen. Symptom A Cisco UC crashes with memory corruption and frozen console access. Workaround Power-cycle the router. This symptom will not occur after the image has been upgraded. Symptom Router crash when configured as mobile router with IP phone attached. Conditions SRST router running This is the first image with sccp version 17 support for SRST.

Workaround Download the IP phone firmware to a version that does not use sccp version Conditions If there are more than 42 buttons configured on the phone, some line buttons may be missing after the phone fails over to the SRST. Workaround Downgrade the phoneload to sccp v16 or lower. Symptom The IOS messages could be observed. Conditions The symptom could happen under normal condition. Workaround Remove the split tunnel configuration. Symptom FXO ports can get stuck in offhook state.

Conditions The symptom is observed when FXO ports are members of a huntgroup where the first member port is disconnected or down. The trunkgroup has max-retry configured and rapid calls are connected and disconnected using the trunkgroup. Workaround Unconfigure max-retry. Under each port, configure timeouts power-denial 0" so that disconnected ports are moved to offhook state and will not be hunted.

The output is different compared to the value received from the same configuration on and Workaround Use reset instead of restart. Symptom 69xx phones display toast message "From : XXXX" when it receives an incoming call for 6 seconds and then it displays the caller ID of the person. Conditions Observed for 8. Workaround Not seen for phone firmware 8. Symptom The Update method would have two call-info headers in certain call scenarios. This would cause the caller ID information to be "unknown" when the two headers were present.

Conditions Under certain call scenarios, the Update method would have two call-info headers, one for normal remotecc info and one for security status. Workaround There is no workaround but it is not service effecting.

Caller ID would be unavailable in certain instances. Symptom CME group pickup or pickup features do not work properly. Symptom A monitor phone can change the monitored dn SNR number via myphoneapp application.

Conditions Using myphoneapp on a monitoring phone can change the SNR target of a monitored dn. Symptom AnyConnect Client version 2. AnyConnect 2. This only pertains to the 2. Workaround Any of the following workarounds may be used:. The TCP sessions could be a telnet or H. Symptom SPAG2 phone would not register. Symptom No line or speed dial buttons are shown on the fallback skinny phone.

Workaround Attach side cars to the phone. Workaround Issue clear crypto isa. Symptom When using the copy ftp command to update IOS software issued on a router, it takes approximately 80 seconds before the file transfer begins. Conditions This is seen on a or series router, but is not seen on routers in other series, such as or Conditions This symptom is observed if a WAN outage happens when more than 40 calls are in progress. Some random calls are then shown to be active when using the command show call active voice compact with Cisco IOS Release Symptom NULL is accepted as a name for class-maps and policy-maps.

No error message is displayed. This enables power supply redundancy for branch or retail environments running mission critical applications. Overall, the Cisco ISR G2 Series offers unparalleled operational savings and network agility through the continued intelligent integration of market leading security, unified communications, wireless, and application optimization services.

The recommended product migration path for base chassis and bundles is captured in the , and End-of-Life and End of Sale Notices located at:. Table 2. Key Benefits. Cisco ISR. Cisco ISR G2. WAN Performance. Up to 45Mbps with Services. Up to Mbps with Services. Network Processor. Single Core. Service Module Performance and Capacity. Up to GB storage. Call goes through fine but wrong bytes are displayed. Workaround Disable LZS compression. Symptom Router may install duplicate routes or incorrect route netmask into routing table.

It could happen on any routing protocol. Additionally, for OSPF, crash was observed. Symptom H gateways crash under load. Conditions Multiple H calls were made simultaneously. 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.

Conditions They have the potential to overflow the destination buffers. Workaround snprintf should be used with a bounding length of the size of the destination buffer. 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. If the CLI is supported, configure it as mls qos cos override cos-value. 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 is thus, invisible to the users.

Symptom When a TCP packet with all fields set to "zero" at a tcp level is sent to a remote router whether using ipv4 and IPv6. Symptom Router may incorrectly drop non TCP traffic. Note that this may cause higher CPU due to fragmentation and reassembly in certain tunnel environments where the command is intended to be used.

Symptom The router crashes due to double free scenarios. Conditions Running Call Manager Express. The crafted packet must be received on a switch interface configured to operate as a trunk port. Symptom Reporting port hang. CCM is 6. The fix will go into There are no workarounds for this vulnerability other than disabling the Object Groups for ACLs feature. Cisco IOS Software configured with Authentication Proxy for HTTP S , Web Authentication or the consent feature, contains a vulnerability that may allow an unauthenticated session to bypass the authentication proxy server or bypass the consent webpage.

The H. There are no workarounds to mitigate the vulnerability apart from disabling H. Successful exploitation of this vulnerability may result in the execution of arbitrary code or a Denial of Service DoS condition on an affected device. Exploitation of the vulnerability could result in a reload of the affected device. Workarounds that mitigate this vulnerability are available within the workarounds section of the posted advisory.

Successful exploitation of this vulnerability may result in the allocation of all available Phase 1 security associations SA and prevent the establishment of new IPsec sessions.