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Vol. 2, No. 4, April, 2000 Unmatched Online Technical Support www.cisco.com/tac
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Special Note to the Reader
What's Hot
Tool Spotlight
Technologies
Hardware Products
Software Products
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Cisco IOS® Software)

Cisco IOS Software
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Special Note to the Reader
Personalize Your TAC Interest Profile Today
 

Starting in June, the Cisco TAC will begin delivering personalized information about the technologies that interest you. By updating your TAC Interest Profile today, you will begin receiving information tailored to fit your everyday technical support needs. Please take a moment to update your TAC Interest Profile using one of the urls below.

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What's Hot
New Security Content Added to the Cisco TAC Technology Pages
 

The Cisco TAC Technology Pages now deliver a wealth of new Security Technologies content. This new Security content includes the following topics: IPSecurity (IPSec), RADIUS, and TACACS+. This new troubleshooting data will enhance your ability to maintain Cisco security products and safeguard your company’s knowledge.

Investigate this hot new TAC Security content at: http://www.cisco.com/tac/technologies/

RIP, IGRP, and NAT Protocols Added to the IP Routing Section of the Cisco TAC Technology Pages
 

The IP Routing Technology section has been enhanced to include troubleshooting, support, and training information on RIP, IGRP, and NAT protocols. These new additions to the IP Routing content covers the latest issues in design, implementation, and support and will help you proactively learn, troubleshoot, and resolve your network issues related to IP Routing quickly.

Investigate this newly enhanced TAC IP Routing content at: http://www.cisco.com/tac/technologies/

Cisco TAC Troubleshooting Assistant Tool Now Offers New Technologies for IP Routing Protocols
 

The Cisco TAC Troubleshooting Assistant tool now includes updated content for troubleshooting IP routing protocols, with entirely new troubleshooting techniques for OSPF and BGP. The TAC Troubleshooting Assistant tool also includes a wealth of information on Cisco 7000, PIX™ Firewall, LAN switching technologies, and voice-over-LAN switching technologies. These enhancements allow you to perform interactive, step-by-step troubleshooting faster and easier than ever before, 24 hours a day, seven days a week.

Check out the enhanced TAC Troubleshooting Assistant tool at:
http://www.cisco.com/support/tsa
(available to registered users only)

The Cisco TAC Web Tools Showcase: Training You On the Cisco Online Technical Support Resources
 

The Cisco TAC Web Tools Showcase provides training on how to use the new features of the Cisco TAC Web site to save time, save money and improve networking skills. By attending the Cisco TAC Web Tools Showcase, you can learn how to use the TAC Web site to find critical information, troubleshoot issues, increase your expertise, and support your networks. Response to the initial Cisco TAC Web Tools Showcase events held in Boston, Los Angeles and San Jose has been overwhelmingly positive. Ninety-nine percent of Showcase attendees said that the event was an excellent use of their time and that the information they received would help them to do their jobs more effectively.

The Cisco TAC Web Tools Showcase is currently doing a nationwide tour. Upcoming locations for April and May are San Francisco, Dallas, Houston, New York City, Chicago, Washington D.C., Raleigh and Atlanta.

For more information as well as specific dates and locations, visit: http://www.cisco.com/tac/showcase

Cisco TAC Output Interpreter Tool Now Offers Selected Core Routing Commands and Updates to Existing IP Routing, Access, and ATM Show Commands
 

In response to recent customer feedback on the Cisco TAC Output Interpreter tool, Cisco TAC engineers have added selected Core Routing commands to the set of commands supported by the tool. Existing IP Routing, Access, and ATM "show" commands have also been updated to support new platforms and software versions. The TAC Output Interpreter tool helps you troubleshoot a number of router issues by copying router "show" commands into a text box. The tool automatically diagnoses the problem, delivers a customized report, and offers suggestions for resolution. Cisco TAC engineers continually update the information that tells the TAC Output Interpreter tool how to interpret commands so that you will receive the accurate analyses you need.

Check out the enhanced TAC Output Interpreter tool at:
http://www.cisco.com/support/OutputInterpreter
(available to registered users only)

Cisco TAC IGX Firmware Compatibility Tool Helps Determine Firmware Compatibility Against Planned WAN Switching Software Upgrades
 

Cisco TAC is pleased to announce the launch of the TAC IGX™ Firmware Compatibility tool. This tool is the latest addition to the Software Center for WAN switching products. The TAC IGX Firmware Compatibility tool allows you to determine if your IGX 8400 series firmware version is compatible with planned WAN switching software upgrades. You can paste IGX 8400 "dspcds" output to the IGX Firmware Compatibility tool and select the version of WAN switching software that you are planning to use. The tool analyses the "dspcds" output and determines compatibility between current and planned firmware version. Evaluation results are also displayed along with links to Software Center downloads.

Access the TAC WAN switching software page at: http://www.cisco.com/kobayashi/sw-center/wan/wan-planner.shtml (available to registered users only)

Access the TAC IGX Firmware Compatibility tool at:
http://www.cisco.com/support/dspcds/
(available to registered users only)

Visit the Newly Redesigned Cisco Interactive Mentor Web Site Today
 

The new Cisco Interactive Mentor (CIM) Web site contains resources to knowledge management, e-learning, online demos, and products to help you succeed and stay competitive in today's business environment. CIM provides solutions to help you meet the challenge by providing you unique interactive demos that capture key features and benefits of the CIM products, and various other informational links. A new version of the CIM Demo CD is also now orderable on Cisco MarketPlace, through the Learning Store. Find out how CIM can help you stay ahead.

Visit the CIM Web Site at:
http://www.cisco.com/go/cim

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Tool Spotlight
Cisco TAC Software Bug Toolkit Helps You Identify Known Bugs in Cisco Software Products
 

The Cisco TAC Software Bug Toolkit consists of three tools (Bug Navigator, Bug Watcher, and Search by Bug ID Number) that help you identify existing bugs in Cisco software products. The Bug Navigator tool allows you to search for software bugs by software version, feature set, or keyword and can be used to troubleshoot and plan upgrades for Cisco software products. The Bug Watcher tool allows you to receive updates on bugs that are of interest to you. Whenever new information on a specific bug is added to CCO, the Bug Watcher will send you a notification. The Search by Bug ID Number tool allows you to search for up-to-date information on a Cisco software bug by using the bug ID number. The TAC Software Bug Toolkit will help you obtain valuable information on known Cisco software bugs and is a valuable tool for maximizing network uptime.

Access the TAC Software Bug Toolkit today:
http://www.cisco.com/support/bugtools/

Cisco TAC Offers AccessPath™ Configuration Tools
 

Follow simple steps to generate configurations for your AccessPath router.

http://www.cisco.com/support/toolkit/Accesspath/
(available to registered users)

TAC Quick Reference Links
  TAC Guide
Product Pages
Technology Pages
Tools
Documents
Software Center
Cisco Live
Cisco TAC Newsletter Archive
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Technologies
ROUTING
 

Tech Tip:
Redistributing Routing Protocols

While running a single routing protocol throughout your entire IP internetwork is desirable, multiprotocol routing is common for a number of reasons including company mergers and multiple departments managed by multiple network administrators. When you redistribute one protocol into another, remember that the metrics of each protocol play an important role in redistribution.

http://www.cisco.com/warp/customer/105/redist.html
(available to registered users)

NETWORKING
 

Tech Tip:
Managing Catalyst Switch-Based and Workgroup Concentrator-Based FDDI Networks

This document describes some of the common issues related to connecting Catalyst(P) switches and workgroup concentrators to FDDI networks.

http://www.cisco.com/warp/customer/90/23.html
(available to registered users)

SECURITY
 

Sample Configuration:
GRE Tunnel Over Cable Sample Configuration and Verification

This document contains descriptions, configurations, and verifications for Generic Routing Encapsulation (GRE), which is a tunneling protocol developed by Cisco that can encapsulate a wide variety of protocol packet types inside IP tunnels.

http://www.cisco.com/warp/customer/116/gre_tunnel_over_cable.html
(available to registered users)

 

Tech Tip:
How Does RADIUS Work?

This document gives an overview of how the RADIUS client/server protocol works.

http://www.cisco.com/warp/customer/707/32.html
(available to registered users)

 

Sample Configurations:
Sample Configuration Using the ip nat outside source static Command

This document provides a sample configuration using the ip nat outside source static command, including a brief description of what happens to the IP packet during the NAT process.

http://www.cisco.com/warp/customer/556/2.html
(available to registered users)

 

Sample Configurations:
Sample Configuration Using the ip nat outside source list Command

This document provides a sample configuration using the ip nat outside source list command, including a brief description of what happens to the IP packet during the NAT process.

http://www.cisco.com/warp/customer/556/1.html
(available to registered users)

 

Sample Configurations:
IPSec Over Cable Sample Configurations and Debugs

This configuration will create an encryption tunnel across a cable network between two Cisco UBR900 series cable access routers. All traffic between the two networks will be encrypted, while allowing traffic destined for other networks to pass unencrypted.

http://www.cisco.com/warp/customer/707/ipsec_over_cable.html
(available to registered users)

VOICE APPLICATIONS
 

Field Notice:
Field Replacement Program for Early PA-VXC-2TE1= Cards

A limited quantity of PA-VXC--2TE1= cards were shipped to previously informed customers with a known hardware performance limitation. The hardware performance limitation was due to a design defect in which one of the 30 DSP components was not usable, resulting in a 3 percent reduction in call handling capacity. Customers were informed that the revision A0 and B0 cards could be returned for replacement when updated cards were available.

http://www.cisco.com/warp/customer/770/fn11771.html
(available to registered users)

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Hardware Products
HARDWARE IN GENERAL
 

Sample Configuration:
FRAS DLSw Backup Sample Configuration

In this sample configuration, we've configured a Frame Relay access support (FRAS) boundary network node (BNN) Cisco router with Token Ring-attached devices and a FRAS host-configured router with a Token Ring-attached host. The objective is to configure and confirm the behavior of the data-link switching (DLSw) backup feature, introduced in Cisco IOS 11.2F, which provides a secondary path to use if the Frame Relay network becomes unavailable.

http://www.cisco.com/warp/customer/100/FRAS-DLSW.html
(available to registered users)

 

Sample Configuration:
Dynamic FRAS BNN Router With Ethernet-Connected Devices Sample Configuration

This sample configuration shows a Cisco router configured for dynamic FRAS BNN with an Ethernet-connected end device. The end device is communicating with a host attached to another Cisco router configured for FRAS host.

http://www.cisco.com/warp/customer/100/frasbnnnew_eth.html
(available to registered users)

 

CISCO 700 ROUTERS
Field Notice:
Cisco 760 and 770 Routers Were Shipped with NET3 Software

The CISCO762M-US, CISCO765M-US, CISCO766M-US, and CISCO776M models were shipped with version 4.4.1 CE (NET3 image) software instead of the 4.3.1 US version of the software.

http://www.cisco.com/warp/customer/770/fn10811.shtml
(available to registered users) CISCO 3620 and 3640

 

Sample Configuration:
E1 R2 Signaling

This document explains E1 R2 signaling, offers the progressive command entry necessary to implement it, and offers troubleshooting information with debug commands.

http://www.cisco.com/warp/public/788/signalling/e1_r2_sig.html
(available to registered users)

 

CISCO 7100 Series
Field Notice:
New Boot ROM For Cisco 7100 Platforms Improves Flash Disk Boot Up Reliability

The system will not recognize files on the Flash Disk at ROM monitor (ROMMON) level, and as a result may experience an intermittent boot up anomaly. When this problem occurs, it's usually when the flash card is accessed between 10 and 20 times at the ROMMON level. Note: Systems ordered after November 14, 1999 are not affected.

http://www.cisco.com/warp/customer/770/fn11931.html
(available to registered users)

 

CISCO 6260 and 6130
Field Notice:
Cisco 6260 and 6130 Mandatory Upgrade of Cisco IOS Software with Release Version 4xDMT ATUC

The new DMT4 cards (800-05262-03) will not be supported by Cisco IOS software releases earlier than 12.0(8)DA2. This is due to the introduction of new micro code. Eventually as on-hand supplies diminish, all DMT4 cards shipping from Cisco will incorporate this new micro code. Customers who have RMAs or are expanding their system should plan on the possibility of receiving the new units. Any customers installing these new cards (800-05262-03 or later) will be required to upgrade their Cisco IOS software release to 12.0(8)DA2 or later. Cisco IOS software Release 12.0(8)DA2 is backward compatible to all other software and hardware features supported in these platforms on the 12.0(8)DA1 release.

http://www.cisco.com/warp/customer/770/fn11471.html
(available to registered users)

 

CISCO 6400
FAQ:
NRP FAQ

This page answers frequently asked questions about the node route processor (NRP). The NRP is the router blade for the Cisco 6400. The NRP receives traffic from one or more node switch processor (NSP) Asynchronous Transfer Mode (ATM) switch ports, reassembles the ATM cells into packets, routes the packets, segments the routed packets, and sends them back to the ATM switch.

http://www.cisco.com/warp/customer/471/nrp_faq.html
(available to registered users)

 

FAQ:
Cisco 6400 Universal Access Concentrator FAQ

This page answers frequently asked questions about the Cisco 6400 series universal access concentrator, a carrier-class service gateway allowing service providers to deploy value-added services as part of a next-generation Internet access architecture.

http://www.cisco.com/warp/customer/471/6400_faq.html
(available to registered users)

 

CISCO 12000
Field Notice:
Cisco 12000 GE and Alteon A180 Series Interoperability

The Cisco GSR Gigabit Ethernet line cards' and the Alteon A180 series switches whose hardware revisions match the list above are not fully interoperable. This problem may result in link resets when the products are used together.

http://www.cisco.com/warp/customer/770/fn10631.html
(available to registered users)

 

CATALYST SWITCHES
Tech Tip:
Managing Software and Configuration on Catalyst Switches

This document describes how to work with configuration files and software images on the Catalyst 4000, 5000, and 6000 families; the Catalyst 2900XL series and 3500XL series; and the Catalyst 1900 series and 2820 series.

http://www.cisco.com/warp/customer/473/10.html
(available to registered users)

 

CATALYST 8540
Field Notice:
Issuing show Commands on a Catalyst 8540 with Power Supply 1 Causes a Crash

Issuing the show subsys or show tech or show controllers crashes the system. One of many show commands crashes the Catalyst 85xx system if issued after the show hardware or show hardware detail commands. This happens only if both power supplies are present, or if a single power supply is present in PS1. This problem has Cisco bug ID CSCdm91042.

http://www.cisco.com/warp/customer/770/fn7190.shtml
(available to registered users)

 

CABLE MODEM
Field Notice:
BPI Modems Display the Modem State Incorrectly in the show cable modem Command

Affected versions of Cisco IOS® software for uBR will incorrectly display the state of Data-Over-Cable Systems Interface Specifications (DOCSIS) 1.0 Baseline Privacy Interface (BPI) modems in certain instances when using the show cable modem command. This occurs during traffic encryption keys (TEK) negotiation. This defect has Cisco bug ID CSCdp66031. If you are a registered CCO user and you have logged in, you can view the bug details.

http://www.cisco.com/warp/customer/770/fn11231.shtml
(available to registered users)

 

DIGITAL SUBSCRIBER LINE ACCESS MULTIPLEXERS
Sample Configuration:
Cisco 6260 DSLAM Sample Configuration

The Cisco 6260 is a multiservice DSL access concentrator designed for worldwide markets. It provides a fully redundant ETSI platform with the capability to support up to 240 DSL modems.

http://www.cisco.com/warp/customer/471/6260_dslam_sample_config.html
(available to registered users)

 

OPTICAL TRANSPORT PRODUCTS
Tech Tip:
SONET Tech Tips

This is a description of SONET, which is an acronym for Synchronous Optical Network. SONET defines optical signals and a synchronous frame structure for multiplexed digital traffic. It is a set of standards defining the rates and formats for optical networks specified in ANSI T1.105, ANSI T1.106, and ANSI T1.117.

http://www.cisco.com/warp/customer/74/sonet_tech_tips.html
(available to registered users)

 

Tech Tip:
SONET APS Tech Tips

The automatic protection switching (APS) feature is supported on Cisco 7500 series routers and Cisco 12000 series routers. This feature allows switchover of packet-over-SONET (POS) circuits in the event of circuit failure and is often required when connecting SONET equipment to telco equipment. APS refers to the mechanism of using a protect POS interface in the SONET network as the backup for "working" POS interface.

http://www.cisco.com/warp/customer/74/sonet_aps_tech_tips.html
(available to registered users)

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Software Products (non Cisco IOS software)
 

Tech Tip:
What Does the "SQL 1105" Error Message Mean?

When the SQL 1105 error message occurs, it's hard to tell whether the database is full or the transaction log is full. The key is to determine if the error message says Msg 1105, Level 17, State 1 or Msg 1105, Level 17, State 2. An 1105 error message containing State 1 means the database is full. An 1105 error message containing State 2 indicates the transaction log is full. The Cisco ICM system has controls that protect against both these errors.

http://www.cisco.com/warp/customer/78/24.html
(available to registered users)

 

Tech Tip:
How Does SQL Server Handle Database Recovery When It Is Restarted?

Whenever Microsoft SQL Server is restarted, each database automatically performs a recovery operation. Since SQL Server uses the transaction log, the following happens when SQL Server restarts: Uncommitted transactions (those that were ongoing at the time SQL Server was shut down or when the system failed) are rolled back. Transactions that were committed between the last checkpoint and the failure are checked and rolled forward.

http://www.cisco.com/warp/customer/78/21.html
(available to registered users)

 

Tech Tip:
No Password Is Assigned to the SQL System Administrator Account. Isn't this a Security Problem?

After installation of Cisco ICM, no password is assigned to the Microsoft SQL Server System Administrator (SA) account. This is because SQL is configured to use integrated security, which uses Microsoft Windows NT authentication mechanisms to validate SQL Server logins.

http://www.cisco.com/warp/customer/78/27.html
(available to registered users)

 

Tech Tip:
What Does the SQL Error "kernel initdata: suballocation for buffer pages failed (xxxxxxxx bytes requested)" Mean?

When you try to start MSSQLSERVER from the services menu, the MSSQLServer service won't start, rendering the database Server, HDS, or AW inoperative. The "kernel initdata: suballocation for buffer pages failed (xxxxxxxx bytes requested)" error message appears. This error message occurs when the configured memory exceeds the physical memory on your Database Server, HDS, or AW.

http://www.cisco.com/warp/customer/78/14.html
(available to registered users)

 

Tech Tip:
What Database Maintenance Does Cisco ICM Perform and How Can I Track It?

The Cisco ICM Database Server and Historical Data Server (HDS) perform daily maintenance on the historical tables in the central and HDS databases. This daily maintenance consists of purge and update statistics functions. When necessary, auto purge and purge adjustment functions are also performed. These functions are described in this Tech Tip.

http://www.cisco.com/warp/customer/78/15.html
(available to registered users)

 

Tech Tip:
Cisco ICM Call Statistics Don't Match Spectrum ACD Reports

When the Cisco ICM Peripheral Interface Manager (PIM) process doesn't receive the necessary call events to properly report call statistics, the ICM call statistics don't match the Spectrum Automatic Call Distributor (ACD) reports.

http://www.cisco.com/warp/customer/78/7.html
(available to registered users)

 

Tech Tip:
Running a Tape Dump of a Cisco ICM Database

You can run a tape dump of your Cisco ICM database using the following query: dump database cust1_sideA to dlt_0 with state = 10, init, noskip. This Tech Tip explains the query parameters.

http://www.cisco.com/warp/customer/78/17.html
(available to registered users)

 

Release:
NetRanger 2.2.1.3 Signature Update Now Available for Download

The NetRanger 2.2.1.3 signature update is now available for CCO download at: http://www.cisco.com/cgi-bin/tablebuild.pl/nr221-update. Installation instructions are provided in the nrUpdate-2.2.1.3.readme file.

Note that this signature update will only install on 2.2.1 Sensors and Directors. The 2.2.1 upgrade software is available for CCO download at: http://www.cisco.com/cgi-bin/tablebuild.pl/nr221-upgrade

The following new signatures are included in this update:

SSH RSAREF2 Buffer Overflow
BackOrifice BO2K TCP Non Stealth
BackOrifice BO2K TCP Stealth 1
BackOrifice BO2K TCP Stealth 2
BackOrifice BO2K UDP
WWW Basic Auth Overflow
sadmind buffer overflow
RingZero Trojan
TFN Client Request
TFN Server Reply
Stacheldraht Client Request
Stacheldraht Server Reply
Trinoo Client Request
Trinoo Server Reply

 

Release:
Cisco WAN Switching IGX UXM Model B Firmware

Release ABF Now Available on CCO URL:

http://www.cisco.com/kobayashi/sw-center/wan/wan-planner.shtml
(select UXM Model B software under "IGX")

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Cisco IOS Software*
 

Tech Tip:
Cisco IOS Software Command Center

This document explains how to develop and deploy a user-friendly web interface for Cisco IOS commands. The Cisco IOS Command Center simplifies access to the most commonly used Cisco IOS commands by providing an easy-to-use Web interface to a router.

http://www.cisco.com/warp/customer/620/ios_command_center.html
(available to registered users)

 

FAQ:
DistributedDirector Frequently Asked Questions

This document contains frequently asked questions about the DistributedDirector product.

http://www.cisco.com/warp/customer/110/distributed-faq.html
(available to registered users)

 

Release:
Cisco IOS Release 12.0(5)XS1 Now Available On CCO on Monday, February 28

Supports: This Early Deployment release supports the Cat6000ATM platform.

 

Release:
Cisco IOS Release 11.1(32)CC Now Available On CCO on Monday, March 6

Supports: This Early Deployment release supports the Cisco 7200 and RSP7000/7500 platforms.

 

Release:
Cisco IOS Release 12.0(5)W5(13b) Now Available On CCO on Monday, March 6

Supports: This Early Deployment release supports the Cat8510C and Cat8540C platforms.

 

Release:
Cisco IOS Release 12.0(8)DA2 Now Available On CCO on Tuesday, February 29

Supports: This Early Deployment release supports the 6130, 6200, and NI2 platforms.

 

Release:
Cisco IOS Release 12.0(9)SC Now Available On CCO on Monday, February 28

Supports: This Early Deployment release supports the UBR7200 platform.

 

Release:
Cisco IOS Release 11.1(32)CA Now Available On CCO on Monday, February 28

Supports: This Early Deployment release supports the 7000, 7200, and RSP7000/7500 platforms.

 

Release:
Cisco IOS Release 12.1(1)EX Now Available On CCO on Monday, February 28

Supports: This Early Deployment release supports Cat6000 and C6MSFC platforms.

 

Release:
Cisco IOS Release 12.0(8)DA1 Now Available On CCO on Friday, February 18

Supports: This Early Deployment release supports the NI2, 6130, and 6200 platforms.

 

*You can find all these releases at http://www.cisco.com/cgi-bin/iosplanner/iosplanner.cgi? (available to Cisco end users and partner customers with Software Center Access)

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About This Newsletter
 

Starting in June, the Cisco TAC Newsletter will begin delivering to you personalized newsletter based on the technologies you are interested in receiving. By updating your TAC Newsletter Profile today, you will begin receiving a newsletter tailored with information to fit your everyday technical support needs. Please take a moment to update your TAC Newsletter Profile using one of the urls below.

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Cisco TAC users automatically receive the Cisco TAC Newsletter. To subscribe to this newsletter, please visit: http://www.cisco.com/public/news_training/itsnews/subscribe.shtml To unsubscribe, please reply to this message with the word "REMOVE" in the subject line. We are striving to make the TAC Newsletter a valuable source of information. We appreciate any feedback you may have. Please send your comments and suggestions to tacnews@cisco.com. We look forward to hearing from you! Customer permission has been obtained for all quotes appearing in this document.

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