Table Of Contents
Release Notes for the Cisco 800 Series Routers for Cisco IOS Release 12.1(5)YC
Cisco 827 and Cisco 827-4V Routers
Determining Your Software Release
Upgrading to a New Software Release
New Software Features in Release 12.1(5)YC1
Cisco 827 and Cisco 827-4V Routers
Enhanced Cisco 810 Series Voice Features for Japan
Cisco 800 Series Router Supported MIBs
Cisco 820 Series Router Supported MIBs
Other MIBs Supported by Cisco 827 and 827-4V Routers
OpenDSL Issues for the Cisco 827 and 827-4V Routers
Cisco 800 Series Memory Management When Using WFQ
Cisco 800 Series Router Clock—CSCdp09409
Cisco 800 Series Router Enhancements
Excessive ISDN Line Activation
NAT Support for H.323 Signaling
Phone Mate Answering Machine Model 9200
PPP over Frame Relay Support (RFC-1973)
ROM Monitor set stop-bits Parameter
Resolved Caveats - Releases 12.1(5)YC2 and 12.1(5)YC3
Caveats for Release 12.1(5)YC1
Resolved Caveats for Release 12.1(5)YC1
Unresolved Caveats for Release 12.1(5)YC1
Cisco IOS Software Documentation Set
Release 12.1 Documentation Set
Obtaining Technical Assistance
Contacting TAC by Using the Cisco TAC Website
Release Notes for the Cisco 800 Series Routers for Cisco IOS Release 12.1(5)YC
March 25, 2002
These release notes describe new features and significant software components for the Cisco 800 Series Routers that support Cisco IOS Release 12.1(5)YC3. 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. Use these release notes with the Cross-Platform Release Notes for Cisco IOS Release 12.1 located on Cisco.com and the Documentation CD-ROM.
For a list of the software caveats that apply to Release 12.1(5)YC3, refer to the section "Caveats" and to the online Caveats for Cisco IOS Release 12.1 T document. The caveats document is updated for every 12.1 T maintenance release and is located on Cisco.com and the Documentation CD-ROM.
Contents
These Release Notes describe the following topics:
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Obtaining Technical Assistance
System Requirements
This section describes the system requirements for Cisco IOS Release 12.1(5)YC3 and includes the following sections:
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Memory Requirements
Hardware Supported
Cisco IOS Release 12.1(5)YC3 supports the following Cisco 800 series routers:
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For detailed descriptions of new hardware features, see New and Changed Information.
Cisco 811 and 813 Routers
The Cisco 811 and 813 Routers provide the following key hardware features:
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Table 2 lists the supported interfaces for the Cisco 811 and 813 routers.
Cisco 827 and Cisco 827-4V Routers
The Cisco 827 and Cisco 827-4V Routers provide the following key hardware features:
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Table 3 lists the supported interfaces for the Cisco 827 and Cisco 827-4V routers.
Determining Your Software Release
To determine the version of Cisco IOS software running on your Cisco 800 series router, log in to the router and enter the show version EXEC command:
router> show versionCisco Internetwork Operating System SoftwareIOS (tm) 800 Software (C800-Y6-MW), Version 12.1(5)YC2, RELEASE SOFTWAREUpgrading to a New Software Release
For general information about upgrading to a new software release, see Cisco IOS Upgrade Ordering Instructions located at:
http://www.cisco.com/warp/public/cc/cisco/mkt/ios/prodlit/957_pp.htm
Feature Set Tables
The Cisco IOS software is packaged in feature sets consisting of software images—depending on the platform. Each feature set contains a specific set of Cisco IOS features. Release 12.1(5)YC3 supports the same feature sets as Releases 12.1 and 12.1 T, but Release 12.1(5)YC3 can include new features supported by the Cisco 800 Series Routers. Table 4 lists the feature sets supported by the Cisco 800 Series Routers.
Table 5 lists the features and feature sets supported by the Cisco 811 and 813 Routers in Cisco IOS Release 12.1(5)YC3. Table 6 lists the features and feature sets supported by the Cisco 827 and Cisco 827-4V Routers in Cisco IOS Release 12.1(5)YC3. The tables use the following conventions:
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New and Changed Information
New Software Features in Release 12.1(5)YC1
Cisco 827 and Cisco 827-4V Routers
The following new software features are supported by the Cisco 827 and Cisco 827-4V routers for Cisco IOS Release 12.1(5)YC3 and above:
OpenDSL
This feature implements auto-provisioning of the Cisco 827 and Cisco 827-4V routers. Auto-provisioning operates at bootup, and includes two procedures: Device Authentication and Image Maintenance. The router will be authenticated at bootup using its vendor ID and serial number. It then requests the Proxy Element to download its configuration file, and configures itself from CLIs in this file. It then polls for configuration changes, and downloads a new image and configuration file, if available, to retrieve the latest changes.
Enhanced Cisco 810 Series Voice Features for Japan
The enhanced voice features described here are for the Japanese market only.
The first six features achieve PBX-like functionality within Cisco 811 and 813 routers. These routers support two plain old telephone service (POTS) ports. The PBX functionality is in and between these two ports.
The remaining features provide capability for silent fax calls, and support for the Personal Handy-Phone System (PHS) Internet Access Forum Standard (PIAFS).
Intercom
This feature establishes a voice connection between the two POTS ports within the router. No B channels are used for calling between ports, so the B channels are available for data calls. During an intercom call, call waiting is disabled. If an external call comes to either POTS port, no call waiting tone is generated. The calling party will hear a busy signal. Flashhook, DTMF keys and FLASHKEY are also disabled.
An intercom call is established by pressing **0# on the handset of either POTS port. If either port is busy with an external voice call, the intercom call will not be established.
Redial
This feature allows the user on each POTS port to redial the last number dialed on that port. Redial is activated when the user presses **4# on the handset. The router will store a number of up to 65 digits for each port. Feature access codes starting with an asterisk (*), interactive voice response (IVR) digits, or the pound (#) key are not stored.
The redial feature is supported separately on each POTS port.
Local Call Transfer
An external call received on either POTS port can be transferred to the other port. The transfer is initiated with a flashhook press followed by pressing **0# on the handset.
This feature does not support conference calls.
Volume Adjustment
This feature allows the adjustment of the receiver volume on each POTS port. Volume adjustment is configured by CLI commands, separately for each port.
To configure the telephone receiver volume on each port, use the IOS volume command in the dial-peer configuration mode:
volume number
where number is a numeric value from 1 to 5 representing the volume setting ranging from -12 to 0 decibels (dB). The default setting is 3.
The following example configures the volume of the receiver on the router telephone ports 1 and 2:
router# configure terminalrouter(config)# dial-peer voice 1 potsrouter(config-dial-peer)# volume 4router(config-dial-peer)# dial-peer voice 2 potsrouter(config-dial-peer)# volume 2The following is an example of the volume adjustment configuration output from the show running-config command:
dial-peer voice 1 potsdestination-pattern 5551111port 1no call-waitingring 0volume 4dial-peer voice 2 potsdestination-pattern 5552222port 2no call-waitingring 0volume 2Distinctive Ringing Based on Caller ID
This feature allows the user to register within the router up to twenty different numbers for each POTS port and to assign distinctive ring cadences to each of these numbers. Three different cadences are available. One of them is the normal ring cadence, as defined by Nippon Telegraph and Telephone (NTT), and is the default cadence for unregistered numbers. Numbers are registered and ring cadences are assigned with CLI commands.
This feature is similar to the Nariwake feature available by subscription from NTT. However, this feature does not require the user to subscribe to any special service from the ISDN switch. If the user already subscribes to Nariwake, then Nariwake will take precedence over this feature.
The ring cadences used for this feature are the same as those used by the Nariwake feature.
To enable and configure distinctive ringing based on caller ID, use the following IOS command in dial-peer configuration mode:
caller-number number ring cadence
no caller-number number ring cadence
where number is the caller ID number of the incoming call, and cadence is the setting for ring cadence and duration. By default, this feature is disabled.
If you have configured the maximum number of twenty per dial peer, disable the numbers by using the no caller number ring cadence command.
The following is an example of the distinctive ringing configuration:
cisco801# configure terminalEnter configuration commands, one per line. End with CNTL/Z.cisco801#(config)#dial-peer voice 1 potscisco801#(config-dial-peer)#caller-number 11111 ring 1cisco801#(config-dial-peer)#caller-number 22222 ring 2cisco801#(config-dial-peer)#caller-number 33333 ring 1The following is an example of the output for the distinctive ringing feature from the show running-config command:
!dial-peer voice 1 potsno caller-idno forward-to-unused-portcall-waitingring 0no silent-faxregistered-caller ring 1port 1volume 3caller-number 11111 ring 1caller-number 22222 ring 2caller-number 33333 ring 1!dial-peer voice 2 potsno caller-idno forward-to-unused-portcall-waitingring 0no silent-faxregistered-caller ring 1port 1volume 3caller-number 11111 ring 1caller-number 33333 ring 1caller-number 22222 ring 2Subaddresses for Ports
This feature allows the router to assign ISDN subaddresses to the POTS ports. With the subaddressing properly configured on the router, an external caller will be able to reach the dialed destination directly.
The subaddress for each POTS port is configured separately using CLI commands. To configure the subaddress for a POTS port, use the IOS subaddress command in dial-peer configuration mode:
subaddress number
no subaddress number
where number is the subaddress of a POTS port. Only one subaddress can be configured for each port. By default, no subaddresses are configured.
The following is an example of the subaddresses configuration:
router# configure terminalrouter(config)# dial-peer voice 1 potsrouter(config-dial-peer)# destination-pattern 5551111router(config)# dial-peer voice 2 potsrouter(config-dial-peer)# destination-pattern 5552222router(config-dial-peer)# subaddress 10The following is an example of the output for configuring subaddresses of the POTS ports:
dial-peer voice 1 potsdestination-pattern 5551111port 1no call-waitingring 0volume 4caller 1112222 ring 3caller 2223333 ring 1caller 3334444 ring 1subaddress 20dial-peer voice 2 potsdestination-pattern 5552222port 2no call-waitingring 0volume 2caller 1111111 ring 1caller 2223323 ring 2caller 3213213 ring 3caller 8552345 ring 1caller 2223456 ring 2subaddress 10Silent FAX Calls
This feature allows either POTS port to be configured as a Type 2 Smart Fax port. When configured in this way, the router will not generate a ring alert when a call comes into the port, but will instead generate a silent fax tone to which a Type 2 Smart Fax analog device will respond. The fax machine does not ring, but the fax call gets connected. If a phone is connected instead of a fax machine, the phone will not ring.
Port configuration is accomplished with CLI commands.
silent-fax
no silent-fax
By default, this feature is disabled.
The following is an example of a silent fax call configuration:
router# configure terminalrouter(config)# dial-peer voice 1 potsrouter(config-dial-peer)# silent-faxThe following is an example of the silent fax configuration output:
dial-peer voice 1 potscaller-idno forward-to-unused-portcall-waitingring 0no silent-faxregistered-caller ring 1port 1volume 3destination-pattern 7773000!dial-peer voice 2 potscaller-idno forward-to-unused-portcall-waitingring 0no silent-faxregistered-caller ring 1port 2volume 3destination-pattern 7773100!Support for PIAFS
This feature provides support for the Personal Handy-Phone System (PHS) Internet Access Forum Standard (PIAFS). PIAFS is a standard error correction protocol for cellular data communication which has been developed in Japan. It is designed to pass data over the PHS cellular system. It also provides transmission control procedures (comparable to OSI reference model layer 2) for high quality data transmission. Both PIAFS version 2.0 and version 2.1 are supported on the 811 and 813 routers.
The common applications that are supported using PIAFS in PHS data communications are:
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This enables the user to send and receive emails. Email is a basic service of the PHS multimedia communications menu.
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This enable faxing of data stored in a Personal Digital Assistant (PDA).
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Internet access has influenced PHS in that many users want to be able to obtain necessary information in a timely manner when they are outdoors. It is also projected that PHS will be used extensively to form intranets for in-house communications by facilitating the expansion of office LAN access points.
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This service can be realized by transmitting the signals of a digital still camera directly or through the medium of a personal computer. This can be regarded as another variation of data transmission service that can use the PHS for transmission.
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The spread of groupware recently has led to frequent instances where groups share common data bases in carrying out or supporting the execution of collaborative work. There are demands to extend this collaborative environment even to outside locations through the use of mobile communications. This is made possible by the use of PHS data communications.
The feature is available by default in all images, and is activated when the ISDN switch type set to ntt. The router must be configured for PPP encapsulation on the ISDN interface.
Limitations and Restrictions
Cisco 800 Series Router Supported MIBs
Table 7 lists the MIBs supported by the Cisco 800 series routers. Each group of MIBs corresponds to a specific group of images.
Cisco 820 Series Router Supported MIBs
MIBs for OpenDSL
The CISCO-DSL-CPE-MIB is partially supported by the Cisco 827 and Cisco 827-4V routers for the OpenDSL feature. Only those objects used in the Device Authentication and Image Maintenance procedures are supported. These objects are:
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Other MIBs Supported by Cisco 827 and 827-4V Routers
The following MIBs are supported by the Cisco 820 series routers, including the Cisco 827 and Cisco 827-4V routers:
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Important Notes
The following sections contain important notes about Cisco IOS Release 12.1(5)YC3 that can apply to the Cisco 800 Series Routers. (Also, see the "Caveats" section.)
OpenDSL Issues for the Cisco 827 and 827-4V Routers
The Cisco 827 and 827-4V routers with OpenDSL are preloaded with a CLI configuration such as "autoconfigure" instead of with no configuration. If a router is not loaded with some configuration, it will enter the initial console-user configuration dialog, which requires input from the user to get the router started.
If the image has been deleted by the user, the user needs to clear flash memory to allow the downloading of a new image during auto provisioning.
There is no WarmRestart action available for the routers. Selecting WarmRestart on CDCM will not reload the routers.
Configuration files must conform to the following:
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B Channel Activation
When a call comes in, a B channel is activated. If the amount of traffic on the B channel exceeds a threshold, the other B channel is activated. If the amount of traffic falls below the threshold, one of the B channels is deactivated. The B channel that is initially activated when the call comes in is not necessarily B1 nor is the B channel that is deactivated when the traffic level lessens necessarily B2.
Cisco 800 Series Memory Management When Using WFQ
When weighted fair queuing (WFQ) is used on the Dialer interface, or when WFQ is used in the default class of a service policy, the following parameters need to be set to the values shown because of the limited amount of memory on the router:
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For example, if you apply WFQ to the Dialer interface, you need to configure it as follows:
interface Dialer 1fair-queue 64 64 0hold-queue 64 outIn this example, the command fair-queue 64 64 0 limits the number of conversations to 64, and sets the discard threshold to 64. The command hold-queue 64 out limits the maximum number of output packets to 64.
In another example, if you configure a service policy, and WFQ is used on the default class, you need to configure the policy as follows:
policy-map mypolicyclass voicepriority 100class class-defaultfair-queue 64queue-limit 64int dialer 1service-policy out mypolicyhold-queue 64 outHere, the command fair-queue 64 limits the number of conversations to 64, and the command queue-limit 64 sets the discard threshold to 64. The command hold-queue 64 out limits the maximum number of output packets to 64.
Failure to configure the above parameters may cause the router to display out-of-memory messages when a large amount of mixed traffic is transmitted from ethernet to ATM.
Cisco 800 Series Router Clock—CSCdp09409
To run IPSec successfully, the Cisco 800 series router clock needs to be set accurately. Cisco 800 series router clocks are set and maintained using Simple Network Time Protocol (SNTP). For best results, set up a Network Time Protocol (NTP) server to periodically send time information messages to Cisco 800 series routers. See the SNTP configuration and command reference documentation for configuration instructions. If you do not have an NTP server, you must reset the Cisco 800 series router clock using the clock set command each time you restart the router.
The SNTP configuration documentation is available in the chapter "Monitoring the Router and Network" volume of the Configuration Fundamentals Configuration Guide in the Cisco IOS documentation set. The SNTP command reference documentation is available in the chapter "Router and Network Monitoring Commands" in the "System Management Commands" volume of the Configuration Fundamentals Command Reference manual of the Cisco IOS documentation set.
Cisco 800 Series Router Enhancements
Cisco 800 series routers support the following features. For more information about these features, see the Cisco IOS documentation set.
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CiscoView Application Support
The CiscoView application supports the Cisco 800 series routers. The CiscoView application provides dynamic status, statistics, and comprehensive configuration information for Cisco switches, routers, concentrators, and adapters. It displays a graphical view of Cisco devices. This network management tool also provides configuring and monitoring functions and offers basic troubleshooting tips.
Dial Peer Limitation
The isdn answer1 and isdn answer2 commands determine which called telephone numbers, for example, 555-1111 and 555-2222, a Cisco 800 series router can answer. Using these commands limits a router to using the two dial peers that contain the telephone numbers 555-1111 and 555-2222. (When not using these commands, a router can use up to six dial peers.) A sample scenario in which the isdn answer1 and isdn answer2 commands are used is when a Cisco 801 or Cisco 803 router is connected with other ISDN devices to an ISDN S-bus.
Downloading Images
Before attempting to download new images, you must first delete files in the router Flash memory. Be sure to use the delete command, not command erase, to free up space. Entering erase removes all files, including the configuration.
Excessive ISDN Line Activation
The following protocols send updates that can cause an ISDN line to be activated excessively, thereby increasing your monthly ISDN line cost:
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See the Cisco 800 Series Routers Software Configuration Guide to set up extended access lists to prevent IP, UDP, IPX, and SNTP updates from activating the ISDN line. For CDP, make certain that you enter the no cdp enable command to disable CDP.
Hanging During Boot
If an illegal console configuration is issued to the router, the console fails the POST tests during boot and causes the router to halt. The only way to recover from this state is to pull apart the soldered boot Flash and re-burn the Boot ROM. This problem has been resolved in TinyROM version 1.0(3), a downloadable ROM upgrade available from Cisco.com. Contact Cisco to upgrade to this version or later, and to prevent this problem from occurring.
ISDN NI1 Provisioning
If you have any problems with your ISDN NI1 provisioning, visit the Cisco ISDN Web site at http://www.cisco.com/isdn.
NAT Support for H.323 Signaling
Currently, NAT does not support alerting H.225 messages. Therefore, NAT communication cannot be established between the router end points. NAT support for H.323 signaling is limited to the Netmeeting application.
Phone Mate Answering Machine Model 9200
A Phone Mate answering machine model 9200 fails to recognize the ringing signal sent by AMD R79 ringing SLIC. This was confirmed by testing against Phone Mate model 3750 and newer model 9300.
PPP over Frame Relay Support (RFC-1973)
Cisco 800 series routers do not support PPP protocol over Frame Relay.
TACACS+ with AAA
Cisco 800 series routers support the Terminal Access Controller Access Control System Plus (TACACS+) protocol through Telnet. TACACS+ is a Cisco proprietary authentication protocol that provides remote access authentication and related network security services, such as event logging. User passwords are administered in a central database, rather than in individual routers. TACACS+ also supports separate modular authentication, authorization, and accounting (AAA) facilities that are configured at individual routers.
For information on how to configure TACACS+, refer to the "Configuring TACACS+" chapter in the Security Configuration Guide. For information on TACACS+ commands, refer to the "TACACS, Extended TACACS, and TACACS+ Commands" chapter in the Security Command Reference.
Cisco 800 series routers do not support the following protocols:
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ROM Monitor set stop-bits Parameter
This release supports the setting of 1 only, for the ROM monitor set stop-bits parameter.
Caveats
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only select severity 3 caveats are included in the caveats document.
For information on caveats in Cisco IOS Release 12.1 T, see Caveats for Cisco IOS Release 12.1 T.
All caveats in Cisco IOS Release 12.1 are also in Cisco IOS Release 12.1 T.
For information on caveats in Cisco IOS Release 12.1, see Caveats for Cisco IOS Release 12.1, which lists severity 1 and 2 caveats and is located on Cisco.com and the Documentation CD-ROM.
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Resolved Caveats - Releases 12.1(5)YC2 and 12.1(5)YC3
This section describes unexpected behavior that is fixed in Releases 12.1(5)YC2 and 12.1(5)YC3.
Management
CSCdw65903
An error can occur with management protocol processing. Please use the following URL for further information:
http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCdw65903
Caveats for Release 12.1(5)YC1
This section describes possibly unexpected behavior by Release 12.1(5)YC1. These caveats are all of severity 3 (moderate).
Resolved Caveats for Release 12.1(5)YC1
This section describes possibly unexpected behavior by software releases prior to Release 12.1(5)YC1, specific to the Cisco 811 and 813 routers, that have been resolved in Release 12.1(5)YC1 and above.
CSCdt77246:
When a router is configured for PPPoE and IP NAT, and an incoming packet does not contain an MSS field or its TCP option field is not terminated by 0, the router might stop routing packets. This defect has been fixed in 12.1(5)YC1 release.
CSCdt35967:
When using CODEC g711alaw & g711ulaw, c827-4v fails to make an outgoing call to another Cisco voice gateway. This defect has been fixed in 12.1(5)YC1 release.
CSCds92106:
C827-4v may hang during system bootup. This defect has been fixed in 12.1(5)YC1 release.
CSCdu37345:
AAA commands are not active for 811/813 in the 12.1(5)YC release. This defect is fixed in the 12.1(5)YC1 release.
Unresolved Caveats for Release 12.1(5)YC1
This section describes possibly unexpected behavior, specific to the Cisco 827 and 827-4V routers, by Release 12.1(5)YC1.
CSCdt47054
When the router is configured to an ATM PVC with PPPoE encapsulation, it will crash when the ATM PVC is removed in a subsequent configuration while the PPPoE session is still active.
CSCdt61879
When the configuration file URL in the ImageTable script is changed to point to a different, new configuration file and the router is reloaded, the previous configuration file is downloaded, rather than the new one. The problem has been traced to the cache in the PE, which retains the previous URL of the configuration file and sends that URL to the tftp server. The workaround is to clear the PE cache before reloading the router. This forces the PE to reload its cache with the latest information from the ImageTable script.
CSCdt61928
The router will crash when executing cl or de commands in exec mode. The workaround is to expand these commands to at least cle and deb.
CSCdt61929
A zero byte configuration file will cause the router to operate in a loop and repeatedly download the configuration file.
Documentation Updates
Changes
Cisco 811 and 813 Routers
There is a change to the contents of the Cisco 811 and Cisco 813 Routers Hardware Installation Guide.
On page 1-3, in Table 1-1, the default size of Flash memory is given as 4MB. The table entry should be updated as follows:
Flash memory
8 MB of Flash memory1 .
1 An additional 4 MB of Flash memory can be added at the factory or at your site. You can order an upgrade kit and have trained and qualified personnel add the memory.
Related Documentation
The following sections describe the documentation available for the Cisco 800 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.com and the Documentation CD-ROM.
Use these release notes with the documents listed in the following sections:
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Release-Specific Documents
The following documents are specific to Release 12.1. They are located on Cisco.com and the Documentation CD-ROM:
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Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes
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Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes
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To reach these documents from Cisco.com, click on this path (under the heading Service & Support):
Technical Documents: Product Bulletins
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The Caveats for Cisco IOS Release 12.1 and Caveats for Cisco IOS Release 12.1 T documents contain caveats applicable to all platforms for all maintenance releases of Release 12.1.
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Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats
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Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats
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Platform-Specific Documents
These documents are available for the Cisco 800 Series Routers on Cisco.com and the Documentation CD-ROM:
Cisco 811 and 813 Routers
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Cisco 827 Routers
These documents are available for the Cisco 820 series routers on Cisco.com and the Documentation CD-ROM:
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On Cisco.com at:
Technical Documents: Documentation Home Page: Access Servers and Access Routers: Fixed Configuration Access Routers: Cisco 827 Routers
On the Documentation CD-ROM at:
Cisco Product Documentation: Access Servers and Access Routers: Fixed Configuration Access Routers: Cisco 827 Routers
Feature Modules
Feature modules describe new features supported by Release 12.1(5)YC3 and are updates to the Cisco IOS documentation set. A feature module consists of a brief overview of the feature, benefits, configuration tasks, and a command reference. As updates, the feature modules are available online only. Feature module information is incorporated in the next printing of the Cisco IOS documentation set.
To reach the Release Release 12.1(5)YC3 feature modules:
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Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in 12.1-Based Limited Lifetime Releases: New Features in Release 12.1 YC: New Features in Release 12.1(5)YC
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Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in 12.1-Based Limited Lifetime Releases: New Features in Release 12.1 YC: New Features in Release 12.1(5)YC
Feature Navigator
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.com. If you have forgotten or lost your account information, e-mail the Contact Database Administration group at cdbadmin@cisco.com. If you do not have an account on Cisco.com, go to http://www.cisco.com/register and follow the directions to set up an account.
To use Feature Navigator, you must have a JavaScript-enabled web browser such as Netscape 3.0 or later, or Internet Explorer 4.0 or later. Internet Explorer 4.0 always has JavaScript enabled. To enable JavaScript for Netscape 3.x or Netscape 4.x, follow the instructions provided with the web browser. For JavaScript support and enabling instructions for other browsers, check with the browser vendor.
Feature Navigator is updated when major Cisco IOS software releases and technology releases occur. You can access Feature Navigator at the following URL:
http://www.cisco.com/go/fn
Cisco IOS Software Documentation Set
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents that are shipped with your order in electronic form on the Documentation CD-ROM—unless you specifically ordered printed versions.
Documentation Modules
Each module in the Cisco IOS documentation set consists of two types of books: a configuration guide and a corresponding command reference. Chapters in a configuration guide describe protocols, configuration tasks, Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide with its corresponding command reference.
The Cisco IOS software documentation set is available on Cisco.com and on the Documentation CD-ROM.
On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
Release 12.1 Documentation Set
Table 8 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in both electronic and printed form.
Note
On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following sites:
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Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
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http://www.cisco.com/cgi-bin/order/order_root.pl
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http://www.cisco.com/go/subscription
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Documentation Feedback
If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
You can e-mail your comments to bug-doc@cisco.com.
To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address:
Attn Document Resource Connection
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
Cisco.com provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can self-register on Cisco.com to obtain additional personalized information and services. Registered users can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.
To access Cisco.com, go to the following website:
http://www.cisco.com
Technical Assistance Center
The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:
http://www.cisco.com/tac
P3 and P4 level problems are defined as follows:
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In each of the above cases, use the Cisco TAC website to quickly find answers to your questions.
To register for Cisco.com, go to the following website:
http://www.cisco.com/register/
If you cannot resolve your technical issue by using the TAC online resources, Cisco.com registered users can open a case online by using the TAC Case Open tool at the following website:
http://www.cisco.com/tac/caseopen
Contacting TAC by Telephone
If you have a priority level 1(P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
P1 and P2 level problems are defined as follows:
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Guest
