Table of Contents

Contents
Introduction
System Requirements
Upgrading to a New Software Release

Saving a Configuration

Image Names

Loading New Software
Reloading a Configuration

Related Applications

CiscoSecure Authentication Agent Support
Cisco Fast Step Support
RVS-COM Lite Support

RVS-COM Lite Installation Instructions

New and Changed Information
Limitations and Restrictions
Caveats
Related Documentation
ISDN Support Services
Cisco Connection Online

Release Notes for Cisco 700 Series Router Software Release 4.4.3

CCO Date 7/30/2000

This release note describes the features and caveats for Cisco 700 series router software Release 4.4.3 and earlier. For complete software documentation for Cisco 700 series router software, refer to the Cisco 700 Series Router Command Reference.

Contents

This document has the following sections:

• Introduction

• System Requirements

• Upgrading to a New Software Release

• Related Applications

• New and Changed Information

• Limitations and Restrictions

• Caveats

• Related Documentation

• ISDN Support Services

• Cisco Connection Online

Introduction

The new features of this release include NetBios filtering, show packets command, Tpad Parity mask, comma character support, and PAT enhancements.

System Requirements

Cisco 700 series router software Release 4.4.3 supports the following routers:

• Cisco 761M

• Cisco 775M

• Cisco 776M

The default software image for the Cisco models 761M and 775M is Cisco 700 Remote Office IP/X.25 (Europe) software for Euro ISDN (NET/3) switch types. The default software image for the Cisco models 762M and 776M is Cisco 700Remote Office IP/X.25 (US) software for U.S. switch types.

Upgrading to a New Software Release

This section describes the processes for upgrading the router software image.

Saving a Configuration

The following example saves the configuration to a file by using Hyperterminal for Windows, a common terminal-emulation software program:

Host> Upload

Step 2 From the Transfer menu, select Receive Text File.

Step 3 In the Receive Text dialog box, specify a filename to save the configuration as, and select the directory where you want to save the file.

Step 4 Click OK.

Step 5 Return to the terminal-emulation program, and press Return to execute the command. The configuration is saved to the file specified in Step 3.

Step 6 Click Stop when the configuration has finished uploading. You are ready to download the software.

Image Names

Table 1 lists the filename and memory required. The image is for both the Cisco 760 and the Cisco 770 series routers. X.25 images require 1.5 MB of DRAM and 1 MB of Flash memory. If you do not have enough Flash memory to run X.25 images, the router must be replaced with a Cisco M-series router. The label on the bottom of the router identifies the device as an M-series router. You can display the amount of Flash memory by using the version command. Refer to the Cisco 700 Series Router Command Reference for information about this command.

Table 1: Image Filenames and Memory Requirements

UNIX Filename	DOS Name	Description	Flash Memory Required	DRAM Required
c760-in.bxd-US.44-3	pbx4430x.us	X25/ B&D, Internet ready, United States	1.0 MB	1.5 MB
c760-in.rxd-NET3.44-3.bin	pr4430x.mls	X25/ B&D, remote office, Europe	1.0 MB	1.5 MB
c760-in.rxd-US.44-3.bin	prx4430x.us	X25/ B&D, remote office, United States	1.0 MB	1.5 MB

Loading New Software

Read and follow the swl (software load) command instructions in the Cisco 700 Series Router Command Reference.

Reloading a Configuration

If you are upgrading from software version 4.4.2, you might have to issue a set default command and reload the configuration again to delete the NetBIOS filter that was removed in software release 4.4.3.

The following example loads the configuration by using Hyperterminal for Windows, a common terminal-emulation software program:

Step 2 Set flow control to Line at a Time, and set Delay Between Lines from 0.5 to 1 second.

Step 5 Select the file to be loaded, such as the one you saved in Step 2 in the "Saving a Configuration" section.

Step 6 Click OK. The parameters are transferred to your router.

Step 7 If errors occur during the transfer, enter the set default command, increase the delay between lines, and repeat the procedure for loading the configuration, beginning with Step 1.

Related Applications

This section describes the applications supported by the Cisco 700 series router software Release 4.4.3.

CiscoSecure Authentication Agent Support

The CiscoSecure Authentication Agent application (available for Windows 95 and Windows NT 4.0) simplifies the use of token authentication over ISDN. There are two modes: single authentication and double authentication.

The Cisco 700 series router operates in single authentication mode when Token Authentication Support (TAS) is enabled. The CiscoSecure Authentication Agent application is available on the Cisco Web site. See the "Cisco Connection Online" section in this document for more information.

Cisco Fast Step Support

Cisco 700 series router software Release 4.0(1) and higher supports the Cisco 700 Fast Step software. Cisco 700 Fast Step software simplifies the setup, configuration, and monitoring of Cisco 700 series routers.

Cisco 700 Fast Step software runs on Microsoft Windows 95, Windows 98, and Windows NT systems. It is provided with your router on the Cisco Fast Step CD-ROM. The application is also available on Cisco Connection Online. See the "Cisco Connection Online" section in this document for more information.

RVS-COM Lite Support

With RVS-COM Lite software version 1.6 and higher, you can use your ISDN router with a PC for general ISDN communications including fax transmission, file transfer, and telephony. The router can be used from several different client-PCs at the same time: for example one PC sending a fax while a second PC is transferring files.

RVS-COM Lite is a general ISDN-CAPI 2.0 driver for Windows 95/98/NT, which can be used by different ISDN communication programs (such as AVM Fritz, Symantec WinFax, T-Online, or RVS-COM) to access ISDN by using the router. The RVS-COM Lite software support is available only for NET3 images (X.25 and non-X.25) and must be installed on each PC.

Note RVS-COM does not detect when the router is turned on or off. The RVS CommCenter must be restarted by the user to accept incoming calls after router reboot.

RVS-COM Lite Installation Instructions

The installation instructions for your RVS-COM software are provided in the readme file on the RVS-COM CD. The following sections provide instructions for using RVS-COM with America Online (AOL), T-Online, and CompuServe in Germany.

AOL (Version 4.0) Setup

Step 2 Select ISDN RVS-CommPort>1.20 Emulation X.75 64000.

Step 3 Enter the COM port for the RVS-CommCenter (COM3 or COM4).

Step 4 Enter the phone number 01914 (Germany).

T-Online (Version 2.0 and Above) Setup

Step 2 Select modem ELSA MicroLink ISDN/TLpro.

Step 3 Click Erweitert.

Step 4 Enter the COM port for the RVS-CommCenter (COM3 or COM4).

Step 5 Select Datenaustausch über Windows-COM (not INT14).

CompuServe (WinCIM Version 4.0) Setup

Step 2 Choose Dial-Up Networking.

Step 3 Select the RVS ISDN X.75 transparent modem from the Phonebook entry to dial list.

New and Changed Information

The enhancements offered by Cisco 700 series router software Release 4.4.3 are as follows:

• An AOCD Charge request was sent even when the aocdtimeout command is set to off. This has been corrected in this release of the software. (CSCdr17066)

• The show packet command did not display the triggered packet details when PAT was set to on and the profile was configured to get a dynamic IP address from the peer device. This has been corrected in this release of the software. (CSCdr41406)

• Removing an IP filter created by using the set netbios filter on command caused the deleted filter to reappear in the next reboot of the router. This has been corrected init this release of the software. (CSCdr43037)

• The router did not place calls for domain name system (DNS) traffic. Once a call was connected, all DNS traffic passed as normal. When using the set netbios filter on, the following filters were applied:

SET IP FILTER UDP OUT DEST 0.0.0.0/0:137-139 IGNORE
SET IP FILTER TCP OUT DEST 0.0.0.0/0:137 IGNORE
SET IP FILTER UDP OUT DEST 0.0.0.0/0:53 IGNORE

This has been corrected in this release of the software, so only the following filters are applied:

SET IP FILTER UDP OUT DEST 0.0.0.0/0:137-139 IGNORE
SET IP FILTER TCP OUT DEST 0.0.0.0/0:137 IGNORE

This allows the router to place calls for DNS traffic. (CSCdr48333)

• The first encrypted packet source address did not get translated into a WAN address because it was a raw IP datagram. The router should provide translation for only ICMP, UDP, and TCP packets. If the router receives any other IP packet, it should simply discard it. But it was being forwarded to the WAN with the original private IP address, which disclosed the private IP address to outside world. This has been corrected in this release of the software. (CSCdr50591)

Limitations and Restrictions

This section provides the latest information about Cisco 700 series router software Release 4.4.3 limitations. Each item includes the Cisco tracking number, if applicable, for your convenience:

• When a Cisco 770 series router is booted without being connected to an ISDN line, the RDY, LINE, CH1, or CH2 LEDs continue to light. This might not represent the true status of the router. Once the ISDN line is connected, the LEDs return to normal operation. The functionality of the router is not affected. (CSCdr84542)

• When RCAPI is on, all incoming PPP, VOICE, and X25 calls fail (treated as RCAPI calls) when the SETUP message does not include the called number. This frequently appears in PPP connections. This applies only to the NET3 image. (CSCdr52859)

• Triggered RIP must be enabled on all routers to work correctly. If a Cisco 700 series router has Triggered RIP enabled and a Cisco IOS router has Triggered RIP disabled, the IOS router will not receive updates to the routing table because it will ignore the Triggered RIP packet. (CSCdk90315)

• Always On/Dynamic ISDN (AO/DI) is available only on one connection. Even if it is enabled on multiple profiles, only one profile at a time can use it. (no number available)

• In Cisco IOS, the multilink lost fragment detection level is overly strict when running multilink because of the possibility of out-of-order packets. This limitation is most noticeable when there is only one link in the bundle and the peer continues to use multilink headers. The alternative is to set the peer maximum transmission unit (MTU) to 1450 bytes to prevent fragmentation of Layer 2 packets. This condition is a Cisco IOS limitation. (CSCdk36295)

• A Cisco IOS router stops processing PPP packets received on a link when it sends a terminate-request (TERMREQ), even though it has not received a terminate-acknowledge (TERMACK) from the peer. As a result, multilink fragments are dropped prematurely, and the router requires a reset. This condition is a Cisco IOS limitation. (CSCdk35787)

• A Cisco 700 series router refuses to accept incoming calls if it receives a set asynchronous balanced mode, extended (SABME) signal from the switch, and the next incoming call has the same call reference as the previous incoming call. Call control appears to have a call control block and ignores this setup because it assumes that the switch has retransmitted the setup message. This call control block should have been deallocated when the SABME was received. (CSCdk55873)

Caveats

This section provides the latest information about Cisco 700 series router software Release 4.4.3 caveats. Each item includes the Cisco tracking number, if applicable, for your convenience.

• RIP updates keep the ISDN link up if the idle timeout is greater than the RIP timer value, even if the RIP option is linkup. However, it does not cause the link to come up by itself. To correct the problem, use a filter for RIP traffic with the ignore option in the WAN profile. (no number available)

• To use triggered RIP on the Cisco 700 series router, the peer router also must be configured for triggered RIP. Triggered RIP is available in Cisco IOS Release 12.03T and Cisco IOS Release 12.04T. (CSCdk63410)

• When using call waiting with an INS switch type, the busy tone is not produced. If one person is on hold and you are speaking to a second person, and that second person disconnects the call, the busy tone that normally alerts you to the waiting call is not heard. However, you can flash back to the person on hold by pressing the hook switch or the flash button. (CSCdk59152)

Related Documentation

The following documentation is provided with your Cisco 700 series router:

• The Release Notes for Cisco 700 Series Router Software Release 4.4.3 provides the latest information on the router software. Release notes for previous versions of the software are on the Cisco Documentation CD-ROM.

• The Cisco 700 Series Cabling and Setup Quick Reference Guide provides hardware installation instructions and includes a Cisco 700 Fast Step CD-ROM.

• The Cisco 700 Series Router Installation Guide provides supplementary hardware installation instructions (the Cisco 700 Series Cabling and Setup Quick Reference Guide provides primary installation instructions) and examples of basic command-line configurations. A paper copy of the document is provided with your router. The document is also available on the Cisco Documentation CD-ROM in HTML format and on the Cisco 700 Fast Step CD-ROM in PDF format. (Document Number DOC-782412=)

• The Cisco 700 Series Router Command Reference provides descriptions of the software commands. The document is available on the Cisco Documentation CD-ROM in HTML format and on the Cisco 700 Fast Step CD-ROM in PDF format. (Software version 4.3 is document number DOC-782413=. Software version 4.4 is document number DOC-OL2413=.)

• The Cisco 700 Series Router Configuration Guide provides examples and descriptions of popular Cisco 700 series router configurations. The document is available on the Cisco Documentation CD-ROM in HTML format and on the Cisco 700 Fast Step CD-ROM in PDF format. (Document number DOC-OL0184=.)

• The Cisco Documentation CD-ROM, a member of the Cisco Connection Family, contains documentation for almost all Cisco products and is updated monthly. Therefore, it might be more current than other sources of product documentation. To order the Documentation CD-ROM, contact your local sales representative or call customer service.

• Cisco documentation is available on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.

If you are reading Cisco product documentation on the World Wide Web, you can submit comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.

ISDN Support Services

ISDN Support Services are only available in the United States. To access this service or to obtain more information, call 800 553-NETS (6387) and select the Customer Service option, or visit the Cisco ISDN Web site at http://www.cisco.com/warp/public/2/ISDN.html.

Cisco Connection Online

Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.

Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.

CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.

You can access CCO in the following ways:

• WWW:  http://www.cisco.com

• WWW:  http://www-europe.cisco.com

• WWW:  http://www-china.cisco.com

• Telnet:  cco.cisco.com

• Modem:  From North America, 408 526-8070; from Europe, 33 1 64 46 40 82. Use the following terminal settings: VT100 emulation; databits: 8; parity: none; stop bits: 1; and connection rates up to 28.8 kbps.

For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.

Note If you are a network administrator and need personal technical assistance with a Cisco product that is under warranty or covered by a maintenance contract, contact Cisco's Technical Assistance Center (TAC) at 800 553-2447, 408 526-7209, or tac@cisco.com. To obtain general information about Cisco Systems, Cisco products, or upgrades, contact 800 553-6387, 408 526-7208, or cs-rep@cisco.com.

Posted: Mon Jul 31 08:15:21 PDT 2000
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