Table Of Contents
Cisco VG202 and Cisco VG204 Voice Gateways
Cisco Secure Router 500 Series
Cisco Unified Communications 500 Series
Additional Notes for the Cisco 800 Series
Additional Notes for the Cisco 1700 Series Routers
Cisco 1800 Series Routers (Fixed Configuration and Modular)
Additional Notes for the Cisco 1800 Series
Cisco 2600XM Series and Cisco 2691 Modular Access Routers
Additional Notes for the Cisco 2800 Series Routers
Cisco 3200 Series Rugged Integrated Service Routers
Additional Notes for the Cisco 3200 Series Rugged Integrated Service Routers
Additional Notes for the Cisco 3600 Series Routers
Additional Notes for the Cisco 3800 Series Routers
Cisco AS5350 and Cisco AS5350XM Universal Gateways
Cisco AS5400, Cisco AS5400HPX, and AS5400XM Universal Gateways
Cisco AS5850 Universal Gateways
Cisco Catalyst 6000/Cisco 7600 Multiprocessor WAN Application Module
Cisco Catalyst 6500/Cisco 7600 Communication Media Module
Additional Notes for the Cisco Catalyst 6500/Cisco 7600 Communication Media Module
Cisco MGX 8850 Route Processor Modules (RPM-PR and RPM-XF)
Cisco Signaling Link Terminals
Feature Support
Cisco IOS software is packaged in feature sets that consist of software images that support specific platforms. The feature sets available for a specific platform depend on which Cisco IOS software images are included in a release. Each feature set contains a specific set of Cisco IOS features.
CautionCisco IOS images with strong encryption (including, but not limited to 168-bit (3DES) data encryption feature sets) are subject to U.S. government export controls and have limited distribution. Strong encryption images to be installed outside the United States are likely to require an export license. Customer orders may be denied or subject to delay because of U.S. government regulations. When applicable, the purchaser/user must obtain local import and use authorizations for all encryption strengths. Please contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com.
The feature set tables have been removed from the Cisco IOS Release 12.4T release notes to improve the usability of the release notes documentation. The feature-to-image mapping that was provided by the feature set tables is available through Cisco Feature Navigator.
Cisco Feature Navigator is a web-based tool that enables you to determine which Cisco IOS software images support a specific set of features and which features are supported in a specific Cisco IOS image. You can search by feature or by feature set (software image). Under the release section, you can compare Cisco IOS software releases side by side to display both the features unique to each software release and the features that the releases have in common.
Cisco Feature Navigator is updated regularly when major Cisco IOS software releases and technology releases occur. For the most current information, go to the Cisco Feature Navigator home page at the following URL:
For frequently asked questions about Cisco Feature Navigator, see the FAQs at the following URL:
http://www.cisco.com/support/FeatureNav/FNFAQ.html
Determining Which Software Images (Feature Sets) Support a Specific Feature
To determine which software images (feature sets) in Cisco IOS Release 12.4T support a specific feature, go to the Cisco Feature Navigator home page and perform the following steps.
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Step 2
Step 3
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Repeat this step to add features. A maximum of 20 features can be chosen for a single search.
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Determining Which Features Are Supported in a Specific Software Image (Feature Set)
To determine which features are supported in a specific software image (feature set) in Cisco IOS Release 12.4T, go to the Cisco Feature Navigator home page and perform the following steps.
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Memory Recommendations
The memory recommendation tables have been removed from the Cisco IOS Release 12.4T release notes to improve the usability of the release notes documentation. The memory recommendations that were provided by these tables are available through Cisco Feature Navigator.
Cisco Feature Navigator is a web-based tool that enables you to determine which Cisco IOS software images support a specific set of features and which features are supported in a specific Cisco IOS image. You can search by feature or by feature set (software image). Under the release section, you can compare Cisco IOS software releases side by side to display both the features unique to each software release and the features that the releases have in common.
Cisco Feature Navigator is updated regularly when major Cisco IOS software releases and technology releases occur. For the most current information, go to the Cisco Feature Navigator home page at the following URL:
For frequently asked questions about Cisco Feature Navigator, see the FAQs at the following URL:
http://tools.cisco.com/ITDIT/CFN/jsp/help.jsp
Determining Memory Recommendations for Software Images (Feature Sets)
To determine memory recommendations for software images (feature sets) in Cisco IOS Release 12.4T, go to the Cisco Feature Navigator home page and perform the following steps.
Step 1
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The Search Results table will list all the software images (feature sets) that support the release that you chose, plus the DRAM and flash memory recommendations for each image.
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The Search Results table will list all the software images (feature sets) that support the release that you chose, plus the DRAM and flash memory recommendations for each image.
Platform-Specific Information
This section describes the platform-specific information for the Cisco platforms supported by Cisco IOS Release 12.4T. Each section includes memory requirements and supported features. Additional information is provided when applicable.
This information is provided for the platforms described in the following sections:
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Cisco SOHO 90 Series Routers
This section contains the following sections with information that is specific to the Cisco SOHO 90 series routers:
Memory Recommendations
For memory recommendations for the Cisco SOHO 90 series routers in Cisco IOS Release 12.4T, see the "Memory Recommendations" section.
Supported Hardware
Cisco IOS Release 12.4T supports the Cisco SOHO 91, Cisco SOHO 96, and Cisco SOHO 97 routers.
The Cisco SOHO 90 series comprises the Cisco SOHO 91 Ethernet broadband router, the Cisco SOHO 96 asymmetric digital subscriber line (ADSL) over ISDN secure broadband router, and the Cisco SOHO 97 ADSL broadband router. The Cisco SOHO 91 Ethernet broadband router has an Ethernet WAN port for use with an external DSL or cable modem. The Cisco SOHO 96 router has an integrated ADSL modem that supports ADSL over ISDN lines. An ADSL modem is integrated into the Cisco SOHO 97 ADSL broadband routers. The Cisco SOHO 97 router supports ADSL over Plain Old Telephone Service (POTS). The routers also provide the following key hardware features:
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For detailed descriptions of the new hardware features, see the "New and Changed Information" section on page 97.
For additional information about supported hardware for this platform and release, see the Cisco Software Advisor at the following location:
http://tools.cisco.com/Support/Fusion/FusionHome.do
Feature Support
For feature support in Cisco IOS Release 12.4T, see the "Feature Support" section.
Cisco VG202 and Cisco VG204 Voice Gateways
This section contains the following sections with information that is specific to the Cisco VG202 and Cisco VG204 analog voice gateways:
Introduction
The Cisco VG202 and Cisco VG204 voice gateways are analog voice gateways for use in the service provider, commercial and Enterprise markets. The Cisco VG202 and Cisco VG204 voice gateways provide 2 and 4 FXS analog voice interfaces to connect to analog phones, fax machines and analog voice modems.
Memory Recommendations
For memory recommendations for the Cisco VG202 and VG204 Voice Gateways in Cisco IOS Release 12.4T, see the "Memory Recommendations" section.
Supported Hardware
Cisco IOS Release 12.4 supports the Cisco VG202 and Cisco VG204 voice gateways.
For detailed descriptions of the new hardware features, see the "New and Changed Information" section on page 97.
For additional information about supported hardware for this platform and release, see the Cisco Software Advisor at the following location:
http://tools.cisco.com/Support/Fusion/FusionHome.do
Feature Support
For feature support in Cisco IOS Release 12.4T, see the "Feature Support" section.
Cisco VG224 Analog Gateways
This section contains the following sections with information that is specific to the Cisco VG224 analog gateways:
Introduction
The Cisco VG224 series is a family of analog gateways. The Cisco VG224 has a 24-port Foreign Exchange Station (FXS) through an RJ-21 connector and two 10/100BASE-T interfaces.
Memory Recommendations
For memory recommendations for the Cisco VG224 Analog Gateway in Cisco IOS Release 12.4T, see the "Memory Recommendations" section.
Supported Hardware
Cisco IOS Release 12.4 supports the Cisco VG224 analog gateway.
For detailed descriptions of the new hardware features, see the "New and Changed Information" section on page 97.
For additional information about supported hardware for this platform and release, see the Cisco Software Advisor at the following location:
http://tools.cisco.com/Support/Fusion/FusionHome.do
Feature Support
For feature support in Cisco IOS Release 12.4T, see the "Feature Support" section.
Cisco VGD 1T3 Voice Gateways
This section contains the following sections with information that is specific to the Cisco VG224 analog gateways:
Introduction
The Cisco VGD 1T3 is a high density voice gateway with up to one Channelized T3 (CT3) of voice over IP (VoIP) capacity with support for Cisco Unified Communications Manager and Cisco Voice Portal applications with Media Gateway Control Protocol (MGCP). The Cisco VGD 1T3 Voice Gateway offers unparalleled capacity in only two rack units (RUs) and provides best-of-class voice and fax services.
Memory Recommendations
For memory recommendations for the Cisco VGD-1T#224 Analog Gateway in Cisco IOS Release 12.4T, see the "Memory Recommendations" section.
Supported Hardware
Cisco IOS Release 12.4(22)T supports the Cisco VGD 1T3 platform.
For detailed descriptions of the new hardware features, see the "New and Changed Information" section on page 97.
For additional information about supported hardware for this platform and release, see the Cisco Software Advisor at the following location:
http://tools.cisco.com/Support/Fusion/FusionHome.do
Feature Support
For feature support in Cisco IOS Release 12.4T, see the "Feature Support" section.
Cisco Secure Router 500 Series
This section contains the following sections with information that is specific to the Cisco secure router 500series:
Introduction
The Cisco Secure Router 520 Series routers are designed for small businesses with up to 50 users and teleworkers who want secure connectivity to corporate LANs and to the Internet. These routers provide advanced security features that include secure Virtual Private Network (VPN) access and comprehensive threat defense with Cisco IOS Firewall, Intrusion Prevention Solution (IPS), and URL filtering. The Cisco Secure Router 520 Series routers also provide dynamic routing and advanced quality of service (QoS) features. They are available in two Ethernet models and four DSL models.
Ethernet Models:
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DSL Models:
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Memory Recommendations
For memory recommendations for the Cisco secure router 500series in Cisco IOS Release 12.4T, see the "Memory Recommendations" section.
Supported Hardware
Cisco IOS Release 12.4T supports the following Cisco secure router 500series:
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For detailed descriptions of the new hardware features, see the "New and Changed Information" section on page 97.
For additional information about supported hardware for this platform and release, see the Cisco Software Advisor at the following location:
http://tools.cisco.com/Support/Fusion/FusionHome.do
Feature Support
For feature support in Cisco IOS Release 12.4, see the "Feature Support" section.
Cisco Unified Communications 500 Series
This section contains the following sections with information that is specific to the Cisco unified communications 500 series:
Introduction
The Cisco Unified Communications 500 platform provides voice, data, voicemail, Automated Attendant, video, security, and wireless capabilities while integrating with existing desktop applications such as calendar, e-mail, and customer relationship management (CRM) programs. This platform supports up to 50 users and flexible deployment options including IP phones, public switched telephone network (PSTN) interfaces, and Internet connectivity.
Memory Recommendations
For memory recommendations for the Cisco UC500 series in Cisco IOS Release 12.4T, see the "Memory Recommendations" section.
Supported Hardware
Cisco IOS Release 12.4T supports the Cisco UC520.
For detailed descriptions of the new hardware features, see the "New and Changed Information" section on page 97.
For additional information about supported hardware for this platform and release, see the Cisco Software Advisor at the following location:
http://tools.cisco.com/Support/Fusion/FusionHome.do
Feature Support
For feature support in Cisco IOS Release 12.4, see the "Feature Support" section.
Cisco 800 Series Routers
This section contains the following sections with information that is specific to the Cisco 800 series routers:
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Memory Recommendations
For memory recommendations for the Cisco 800 series routers in Cisco IOS Release 12.4T, see the "Memory Recommendations" section.
Supported Hardware
Cisco IOS Release 12.4T supports the following Cisco 800 series routers:
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For detailed descriptions of the new hardware features, see the "New and Changed Information" section on page 97.
For additional information about supported hardware for this platform and release, see the Cisco Software Advisor at the following location:
http://tools.cisco.com/Support/Fusion/FusionHome.do
Feature Support
For feature support in Cisco IOS Release 12.4, see the "Feature Support" section.
Additional Notes for the Cisco 800 Series
This section contains important information about using the Cisco 800 series routers with Cisco IOS Release 12.4T software.
ADSL2 and ADSL2+ Support
Cisco IOS Release 12.4(4)T introduces ADSL2 and ADSL2+ features for the Cisco 857, Cisco 876 and Cisco 877 routers. For "dsl operating-mode" configuration, see the following:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124newft/124t/124t4/dsl_hwic.htm
caller-id Command
When the caller-id command (which appears under "dial-peer" in the configuration commands) is used, the default setting is "off" for Japan and "on" for the United States. This command was introduced in Cisco IOS Release 12.1(2)XF.
DHCP Client Support
To configure the router for Dynamic Host Configuration Protocol (DHCP) client support, perform the following steps:
Step 1
Specifying the value client-id ethernet0 causes the MAC address of the Ethernet interface to be used as the client ID when the DHCP request is sent. Otherwise, the MAC address of the BVI is used as the client ID.
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The following is a sample configuration:
Current configuration:!version 12.0no service padservice timestamps debug uptimeservice timestamps log uptimeno service password-encryption!hostname c827!!ip subnet-zeroip dhcp excluded-address 10.10.10.1!ip dhcp pool SERVERnetwork 10.10.10.0 255.255.255.0default-router 10.10.10.1import all!!!bridge irb!!!!interface Ethernet0ip address 10.10.10.1 255.255.255.0no ip directed-broadcastip nat inside!interface ATM0no ip addressno ip directed-broadcastno atm ilmi-keepalivebundle-enablehold-queue 208 in!interface ATM0.1 point-to-pointno ip directed-broadcastpvc 1/100encapsulation aal5snap!bridge-group 1!interface ATM0.2 point-to-pointip address 5.0.0.2 255.0.0.0no ip directed-broadcastpvc 1/101protocol ip 5.0.0.1 broadcastprotocol ip 5.0.0.5 broadcastencapsulation aal5snap!!interface BVI1ip address dhcp client-id ethernet0no ip directed-broadcastip nat outside!ip nat inside source list 1 interface BVI 1 overloadip classlessip route 0.0.0.0 0.0.0.0 BVI1no ip http server!access-list 1 permit 10.10.10.0 0.0.0.255bridge 1 protocol ieeebridge 1 route ip!voice-port 1timing hookflash-in 0!voice-port 2timing hookflash-in 0!voice-port 3timing hookflash-in 0!voice-port 4timing hookflash-in 0!!line con 0exec-timeout 0 0transport input nonestopbits 1line vty 0 4password lablogin!scheduler max-task-time 5000endDownloading Images
Delete files in the router flash memory before attempting to download new images.
Caution
Flash Memory
Cisco 800 series routers use 4 MB of flash memory for storing internal information such as the ROM monitor. Only the remainder of the flash memory is available for storing Cisco IOS images and is displayed by using the show flash command. For example, if the router reports 8 MB of flash, the actual amount of onboard flash memory is 12 MB, even though only 8 MB are displayed and available for Cisco IOS image storage.
Multilink PPP and Interleaving
Multilink PPP fragments large data packets to allow small voice packets to be interleaved between them. However, apart from FIFO queueing, no other kind of output queueing mechanisms are supported with PPP over ATM. Consequently, when multilink PPP is configured on the Cisco 800 series routers, large packets are fragmented, but small voice packets are not interleaved between them.
NAT Support for H.323 Signaling
NAT does not support alerting H.225 messages; therefore, NAT communication cannot be established between router endpoints. NAT support for H.323 signaling is limited to the application NetMeeting.
PPP over AAL5SNAP Encapsulation Support
PPP over AAL5SNAP encapsulation is not supported, although the context-sensitive help mentions that it can be configured.
Cisco 800 Series Router Clock—CSCdp09409
To run IP Security (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.
Dial Peer Limitation
The isdn answer1 and isdn answer2 commands determine which called telephone numbers, for example, 555-0100 and 555-0199, a Cisco 800 series router can answer. Using these commands limits a router to using the two dial peers that contain the telephone numbers 555-0100 and 555-0199. (When not using these commands, a router can use up to six dial peers.)
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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For information on preventing this situation, refer to the Cisco 800 Series Routers Software Configuration Guide. This guide contains information on setting up extended access lists to prevent IP, UDP, IPX, and SNTP updates from activating the ISDN line. For CDP, ensure 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 will fail the power-on self-test (POST) test during boot and cause the router to pause indefinitely. There is no way to recover a unit in this state except by pulling the soldered boot Flash and reburning the boot ROM.
This problem has been resolved in TinyROM version 1.0(3), a downloadable ROM upgrade available from Cisco.com. Please contact Cisco to upgrade to this version or a later version, and prevent this problem from occurring.
Phone Mate Answering Machine Model 9200
A Phone Mate answering machine model 9200 failed to recognize the ringing signal sent by AMD R79 ringing Subscriber Line Interface Card (SLIC). This failure was confirmed by testing against Phone Mate model 3750 and the newer model 9300.
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 1700 Series Routers
This section contains the following sections with information that is specific to the Cisco 1700 series routers:
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Memory Recommendations
For memory recommendations for the Cisco 1700 series routers in Cisco IOS Release 12.4, see the "Memory Recommendations" section.
Hardware Supported
Cisco IOS Release 12.4 supports the following Cisco 1700 series routers:
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For detailed descriptions of the new hardware features, see the "New and Changed Information" section on page 97.
For additional information about supported hardware for this platform and release, see the Cisco Software Advisor at the following location:
http://tools.cisco.com/Support/Fusion/FusionHome.do
Cisco 1701
The Cisco 1701 ADSL Security Access Router provides secure and reliable Internet and corporate network connectivity to enterprise small branch offices and small and medium-sized businesses and includes the following features:
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The Cisco 1701 router has the following hardware components:
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Cisco 1711
The Cisco 1711 router provides Internet and intranet access and includes the following features:
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The Cisco 1711 router has the following hardware components:
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Cisco 1712
The Cisco 1712 router provides Internet and intranet access and includes the following features:
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The Cisco 1712 router has the following hardware components:
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Cisco 1721
The Cisco 1721 router provides Internet and intranet access and includes the following features:
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The Cisco 1721 router has the following hardware components:
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The Cisco 1721 router supports any combination of one or two of the following WAN interface cards (WICs) or multiflex Voice/WAN interface cards (VWICs) (data only), which are shared with the Cisco 1700, Cisco 2600, and Cisco 3600 series routers:
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The following T1/E1 Multiflex VWICs are also supported on the Cisco 1721 for data applications only:
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Cisco 1751
The voice- and data-capable Cisco 1751 router comes in two models, the Cisco 1751 and the Cisco 1751-V. These models provide global Internet and company intranet access, and include the following features:
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The Cisco 1751 router has the following hardware components:
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The Cisco 1751 router also supports any combination of one or two of the following WICs, which are shared with the Cisco 1600 series, Cisco 1720, Cisco 2600 series, and Cisco 3600 series routers:
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The following T1/E1 multiflex VWICs are also supported on the Cisco 1751 (and shared with the Cisco 2600 and Cisco 3600 series routers) and can be used for both channelized data and voice applications:
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The Cisco 1751 router supports any combination of one or two of the following VICs, which are shared with the Cisco 2600 and Cisco 3600 series routers:
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Cisco 1760
The voice- and data-capable Cisco 1760 router provides global Internet and company intranet access, and includes the following features:
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The Cisco 1760 router has the following hardware components:
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The Cisco 1760 router also supports any combination of one or two of the following WICs, which are shared with the Cisco 1600 series, Cisco 1720, Cisco 2600 series, and Cisco 3600 series routers:
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Guest
