Cisco Logo Cisco Technical Assistance Center (TAC)
Newsletter
TAC Certified
Vol. 4, No. 3 March 2002 Unmatched Online Technical Support www.cisco.com/tac
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In This Issue:
What's Hot
Online Technical Training Opportunities
CCIE Central

Access
Access: Broadband Cable
Access: DSL
ATM
Content Delivery Devices
IBM
LAN
Network Management Software (NMS)
Network Security
Optical Platforms
Routers
TCP/IP: IP Routing
Voice, Telephony, and Messaging
VPN
WAN
Wireless Products

TAC Newsletter Archive
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What's Hot

Case Open Tool - UPDATE:
Open P3 and P4 Trouble Tickets Online for Faster Service

Open your Priority 3 (P3) and Priority 4 (P4) technical support cases via the Cisco TAC Web Site's Case Open tool. The Case Open tool offers you four key benefits:

  • Suggests relevant technical support documents and tools to help you immediately resolve issues.
  • Routes your case to a TAC engineer faster than cases opened via e-mail or phone.
  • Enables you to attach output, notes, and additional background information directly to your case.
  • Links to the TAC Web Site's Case Query and Update tools, allowing you to monitor and manage your case.

Note that P3 cases involve impaired network performance while business operations remain functional, and P4 cases include requests for information or assistance with installation and configuration.

Speed the resolution of your P3 or P4 case by using the Case Open Tool:

http://www.cisco.com/tac/newsletter/030602_case_open_tool.html
(available to registered users only)


Access Dial Top Issues - UPDATED:
Resolve Access Dial Technology Issues with the Latest Support Documents

The "Access Dial Top Issues" page offers the latest troubleshooting information for Cisco access products and technologies, including the following topics:

  • Troubleshooting modems (Updated!)
  • Hardware troubleshooting for access platforms (Updated!)
  • Configuring virtual private dialup networks (VPDN) with RADIUS and TACACS+ servers (Updated!)
  • Configuring ISDN Basic Rate Interface (BRI) for Dial-on-Demand Routing (DDR)
  • Troubleshooting ISDN BRI
  • Configuring and troubleshooting DDR backup
  • Connecting modems to Async, AUX, and console ports
  • T1 and E1 troubleshooting
  • Diagnosing and troubleshooting authentication, authorization, and accounting (AAA)

Go first to the "Access Dial Top Issues" section when you have access questions:

http://www.cisco.com/tac/newsletter/030602_top_issues_access_dial_up.html


DSL Top Issues - UPDATED:
New and Revised Resources Address Common DSL Concerns

The updated "DSL Top Issues" page provides the latest troubleshooting information on Cisco digital subscriber line (DSL) technology. The most common DSL issues can be resolved with the following five resources:

  • Cisco 6400 hardware troubleshooting guide (New!)
  • PPPoE and maximum transmission unit (MTU) issues with PC clients and Cisco routers
  • Cisco 827 configuration and troubleshooting guide
  • Configuring Cisco 1700/2600/3600 routers with an ADSL WAN interface card (ADSL-WIC)
  • Configuring Network Address Translation and Static Port Address Translation to support an internal Web server

Whether provisioning a WAN with DSL service or wiring your office for DSL telecommuting, check out the updated "DSL Top Issues" page today:

http://www.cisco.com/tac/newsletter/030602_dsl_top_issues.html


PIX Firewall Top Issues - UPDATED:
New Resources Help Maintain Network Security

The "PIX® Firewall Top Issues" section offers 46 documents rated by customers as being the most useful in solving PIX Firewall-related concerns, including:

  • Configuring the Cisco VPN Client to tunnel to two remote sites through one hub PIX Firewall (New!)
  • How to configure a LAN-to-LAN IPSec between a router and a PIX using digital certificates (New!)
  • Tunneling IP multicast packets through a PIX Firewall
  • Terminating IPSec tunnels on multiple Cisco PIX Firewall interfaces with extended authentication (Xauth)

Visit the updated "PIX Firewall Top Issues" section to view all 46 top-rated PIX documents:

http://www.cisco.com/tac/newsletter/030602_pix_firewall_top_issues.html


Cable Top Issues - UPDATED:
Resolve Common Cable Issues with Expert Advice

The "Cable Top Issues" section now includes four new documents concerning cable networks:

  • How to configure a Cisco router behind a non-Cisco cable modem
  • How to obtain a Data-over-Cable Systems Interface Specifications (DOCSIS) 1.1 image for the Cable Modem Termination System (CMTS)
  • Understanding data throughput in a DOCSIS world
  • N+1 tips and configuration for the uBR 10K with MC28C cards

Take advantage of these and other helpful resources covering issues with cable networks using Cisco uBR cable modems, uBR CMTS, Cisco Network Registrar (CNR), RateMUX™, and DOCSIS at the "Cable Top Issues" section:

http://www.cisco.com/tac/newsletter/030602_cable_top_issues.html


Wireless Top Issues - UPDATED:
New Resources Support Your Wireless LAN

The "Wireless Top Issues" page provides support information related to Cisco Aironet® Series wireless LAN (WLAN) equipment, including four new documents:

  • Configuring the BSE343 and BSM342 base stations
  • Cisco Aironet base station FAQ
  • Cisco Aironet hardware association matrix
  • Cisco Aironet wireless client adapters and Windows XP Systems: drivers and Cisco LEAP

Discover the extensive Aironet WLAN resources at the "Wireless Top Issues" page today:

http://www.cisco.com/tac/newsletter/030602_wireless_top_issues.html


IBM Top Issues - UPDATED:
New Resources Help Assure Interoperability of IBM and Cisco Technologies

The "IBM Top Issues" section covers common issues arising in networks using IBM technologies, such as data-link switching (DLSw+), source-route bridging (SRB), channel interface processor (CIP), serial tunneling (STUN), block serial tunneling (BSTUN), and Token Ring. These online documents contain technical advice from TAC experts on topics such as:

  • DLSw+ circuit troubleshooting, including DLSw and 802.1Q issues
  • DLSw+ redundancy
  • Defining hundreds of TN3270 direct PUs without exceeding TN3270-server configuration limitations
  • Updated BSC and BSTUN troubleshooting

Maintain compatibility between IBM and Cisco technologies by visiting the updated "IBM Top Issues" section:

http://www.cisco.com/tac/newsletter/030602_ibm_top_issues.html


Content Networking Top Issues - UPDATED:
Updated Resources Help Optimize Web-Based Content Delivery

The updated "Content Networking Top Issues" section covers the most common issues related to Cisco CSS 11000 Series Content Services Switch, LocalDirector, CacheEngine, and Web Cache Communication Protocol (WCCP), including:

  • Enabling Web management on the Cisco CSS 11000 (Updated!)
  • Configuring caching using a cache engine (Updated!)
  • Persistence on CSS 11000
  • Configuring redirection on LocalDirector
  • Configuring WCCP version 2 on a Cisco Cache Engine and router

Let the updated "Content Networking Top Issues" section help you achieve optimal content delivery:

http://www.cisco.com/tac/newsletter/030602_content_networking_top_issues.html


Software Advisor Tool - NEW:
Single Source for Researching Software Features and Compatibility

The new Software Advisor tool is Cisco TAC's most comprehensive utility for determining compatibility and feature information for Cisco IOS® Software and Cisco Catalyst® Operating System software, enabling you to:

  • Identify and explore features introduced in specific software releases
  • Match features with software versions
  • Determine compatibility between hardware products and software releases
  • Research current or potential hardware and software configurations

Try out the new Software Advisor tool today:

http://www.cisco.com/tac/newsletter/030602_sw_advisor.html
(available to registered users only)


Output Interpreter - UPDATED:
Now Supports More Commands for IOS Firewall, NAT, IPSec-VPN, and PIX

The Output Interpreter now includes expanded support for common errors with Cisco IOS Firewall, Network Address Translation (NAT), IPSec-Virtual Private Network (VPN), and Cisco Secure PIX Firewall configurations. Paste the output from the following commands into the Output Interpreter for an instant analysis that includes identification of potential problems and suggestions for resolution:

  • "show running-config" (Cisco IOS Firewall) - provides new analysis for Lock-and-Key, Reflexive Access-Lists (IP Session Filtering), TCP Intercept, and Context-Based Access Control.
  • "show running-config" (NAT) - identifies overlapping static and dynamic pool ranges, and checks for appropriate use of access-lists, route maps, and more.
  • "show running-config" (IPSec-VPN) - provides new analysis of router-to-router IPSec-VPN configuration, transform-set, crypto map, ISAKMP and manual key configuration, and more.
  • "show tech-support" (PIX) - provides more in-depth troubleshooting information.
  • "show interface" (PIX) - identifies the total number of network interface cards and their types.
  • "show failover" (PIX) - identifies incorrect subnet configuration for interfaces.
  • "write terminal" (PIX) - identifies interface security levels.
  • "show version" (PIX) - identifies full subsets of PIX versions such as 6.1(1)102.

See what the Output Interpreter has to say about your network configuration:

http://www.cisco.com/tac/newsletter/030602_output_interpreter.html
(available to registered users only)


Network Time Protocol: Best Practices White Paper - NEW:
Measuring Time as the Foundation for Characterizing Network Behavior

The new Cisco "Network Time Protocol: Best Practices White Paper" describes a process for conducting network management functions with the Network Time Protocol (NTP). When you synchronize time measurement across your Cisco IP-based network, you can more accurately analyze quality of service (QoS) metrics.

Highlights of this white paper include:

  • Overview - background information on hardware related to system time, a technological overview of NTP, and key design aspects for the NTP architecture.
  • Example NTP Deployment - sample configurations for WAN, high stratum campus, and low stratum campus time distribution networks.
  • NTP Process Definitions - management goals, performance indicators, inputs, outputs, and individual tasks.
  • NTP Data Collection - traps, Remote Monitoring (RMON) alarms and events, polling, automatic scripts, and command line interface (CLI) commands.
  • NTP Data Presentation - sample report formats.
  • Example Data Collection Algorithms - development of tools to implement the NTP management procedure.

Establish reliable time synchronization processes in your network with the new Cisco "Network Time Protocol: Best Practices White Paper":

http://www.cisco.com/tac/newsletter/030602_network_time_protocol_wp.html


Networkers 2002 Conferences - UPDATE:
Register Before March 17 to Receive $300 Discount

Attend the Networkers 2002 World of Solutions and meet with other networking professionals to get the training and information necessary to keep up with Cisco technologies, solutions, and products.

Along with a week-long schedule of group training opportunities, Networkers 2002 also offers the Design Clinic, where you can drop in anytime. Here you will meet Cisco certified experts one-on-one to receive practical solutions and design recommendations for your most challenging network issues.

After registering for Networkers 2002, you can also sign up for one free Cisco Career Certifications test. Testing for CCNA®, CCNP®, CCDA®, CCDP®, CCIP™ certifications, and CCIE® qualification is available on a first-come, first-served basis to those who preregister.

This year's events take place in two locations in North America:

  • San Diego, CA: June 24-28
  • Orlando, FL: July 8-12

To register for and get more information about Networkers 2002, visit:

http://www.cisco.com/tac/newsletter/030602_networkers.html


Online Technical Training Opportunities

Cisco TAC Web Seminars - UPDATE:
Become an Expert at Using the Cisco TAC's Online Resources

Learn to use the same resources that Cisco TAC engineers employ to resolve technical support cases. Register today for free, online seminars that show you how the Cisco TAC Web Site can help you troubleshoot and maintain your networks.

The "General Overview" seminar introduces you to the wealth of documentation and tools that make the Cisco TAC Web Site your one-stop technical support resource. For your convenience, the "General Overview" seminar is available as a live or on-demand session, in English, French, Portuguese, and Spanish.

Technology-specific seminars demonstrate the Cisco TAC Web Site's specialized resources for routers; voice, telephony, and messaging; LAN technologies; and network security and VPN. More technology-specific seminars will be added in the coming months.

Register for a live event or attend an on-demand seminar today at the Cisco TAC Web Seminars site:

http://www.cisco.com/tac/newsletter/030602_tac_web_sem.html


Networking Professionals Connection - NEW:
Discussion Forums, TechTalks, and "Ask the Expert" Events

Networking Professionals Connection is an interactive Web site where you can share questions, suggestions, and information about networking products and technologies. This site also offers discussion forums on topics such as virtual private networks (VPNs), network security, voice and video, and more. Current offerings include:

  • "Ask the Expert" Events:
    • "Campus Network Design": March 4 - 15
    • "E-911": March 18 - 29

Visit the Networking Professionals Connection to join a discussion, register for a TechTalk, and to find out about upcoming events:

http://www.cisco.com/tac/newsletter/030602_net_pro_conn.html


CCIE Central

CCIE Security - NEW:
New Exam Distinguishes Security-Savvy Networking Experts

The CCIE® certification program now offers "CCIE Network Security," a track for individuals and organizations primarily concerned with network security.

The CCIE Security Lab Exam emphasizes technologies specific to network security as well as core routing and switching. Candidates must successfully secure an enterprise network, implementing firewalls, intrusion detection, authentication servers, routers, and switches. Candidates must also configure network devices to interact with pre-configured systems running authentication, authorization, and accounting (AAA), Certification Authority (CA), and Cisco Secure IDS.

To learn more about CCIE Network Security certification, visit:

http://www.cisco.com/tac/newsletter/030602_ccie_security.html


Access

Configuration Example:
Using SGBP in LSDO Environments

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

http://www.cisco.com/warp/public/471/lsdo_sgbp.html
(available to nonregistered users)


Configuration Example:
VPDN Configuration Without AAA

http://www.cisco.com/warp/customer/793/access_dial/vpdn-without-aaa.html
(available to registered users)

http://www.cisco.com/warp/public/793/access_dial/vpdn-without-aaa.html
(available to nonregistered users)


Tech Note:
Hardware Troubleshooting for the Cisco 4000 Series Router

http://www.cisco.com/warp/customer/108/hwts_4000_17934.html
(available to registered users)

http://www.cisco.com/warp/public/108/hwts_4000_17934.html
(available to nonregistered users)


Tech Note:
Hardware Troubleshooting for Cisco 1700 Series Routers

http://www.cisco.com/warp/customer/108/hwts_1700_17959.html
(available to registered users)

http://www.cisco.com/warp/public/108/hwts_1700_17959.html
(available to nonregistered users)


Tech Note:
Hardware Troubleshooting for the AS5800

http://www.cisco.com/warp/customer/108/as5800_hw_ts.html
(available to registered users)

http://www.cisco.com/warp/public/108/as5800_hw_ts.html
(available to nonregistered users)


Access: Broadband Cable

Configuration Example:
How to Configure a Cisco Router behind a Non-Cisco Cable Modem

http://www.cisco.com/warp/customer/109/router_behind_cm_19268.shtml
(available to registered users)

http://www.cisco.com/warp/public/109/router_behind_cm_19268.shtml
(available to nonregistered users)


Access: DSL

Configuration Example:
Configuring Cisco 1700/2600/3600 Routers with an ADSL WAN Interface Card (ADSL-WIC)

http://www.cisco.com/warp/customer/794/top_issues/dsl/top_wicadsl.html
(available to registered users)

http://www.cisco.com/warp/public/794/top_issues/dsl/top_wicadsl.html
(available to nonregistered users)


Tech Note:
Cisco 827 Configuration and Troubleshooting Guide

http://www.cisco.com/warp/customer/794/827guide.html
(available to registered users)

http://www.cisco.com/warp/public/794/827guide.html
(available to nonregistered users)


Tech Note:
Cisco 6400 Hardware Troubleshooting Guide

http://www.cisco.com/warp/customer/794/6400_hw.html
(available to registered users)

http://www.cisco.com/warp/public/794/6400_hw.html
(available to nonregistered users)


Tech Note:
High CPU Utilization on Cisco Routers Used as L2TP Termination Points

http://www.cisco.com/warp/customer/794/l2tp_highcpu.html
(available to registered users)

http://www.cisco.com/warp/public/794/l2tp_highcpu.html
(available to nonregistered users)


ATM

Sample Configuration:
Unstructured CES Using SRTS and PVCs in a Cisco 3600 Platform

http://www.cisco.com/warp/customer/121/unstruc_ces_srts_18688.shtml
(available to registered users)

http://www.cisco.com/warp/public/121/unstruc_ces_srts_18688.shtml
(available to nonregistered users)


Sample Configuration:
Structured CES Using Synchronous Clocking and PVCs in a Cisco 3600 Platform

http://www.cisco.com/warp/customer/121/struc_ces_sync_pvc_19261.shtml
(available to registered users)

http://www.cisco.com/warp/public/121/struc_ces_sync_pvc_19261.shtml
(available to nonregistered users)


Tech Note:
ATM Control Cells Illustrated - Idle Cells, Unassigned Cells, IMA Filler Cells, and Invalid Cells

http://www.cisco.com/warp/customer/121/cell_format_7979.html
(available to registered users)

http://www.cisco.com/warp/public/121/cell_format_7979.html
(available to nonregistered users)


Tech Note:
Major Differences Between Cisco Catalyst® 8540 CSR and Cisco Catalyst 8540 MSR

http://www.cisco.com/warp/customer/121/csr_msr_10123.html
(available to registered users)

http://www.cisco.com/warp/public/121/csr_msr_10123.html
(available to nonregistered users)


Tech Note:
Troubleshooting "ignored" Errors on an ATM Port Adapter

http://www.cisco.com/warp/customer/121/ignorederrors_6143.html
(available to registered users)

http://www.cisco.com/warp/public/121/ignorederrors_6143.html
(available to nonregistered users)


Tech Note:
Unstructured CES with Synchronous Clocking and PVCs on a 3600 Platform

http://www.cisco.com/warp/customer/121/CES-3640_unstructured_PVC_15318.shtml
(available to registered users)

http://www.cisco.com/warp/public/121/CES-3640_unstructured_PVC_15318.shtml
(available to nonregistered users)


Content Delivery Devices

Configuration Example:
Top Issues: How to Enable Web Management on the CSS 11000

http://www.cisco.com/warp/customer/117/cdn_top_issues/cdn_ti_web_management_css.shtml
(available to registered users)

http://www.cisco.com/warp/public/117/cdn_top_issues/cdn_ti_web_management_css.shtml
(available to nonregistered users)


Configuration Example:
Configuring Web Cache Communication Protocol Version 2 on a Cisco Cache Engine and Router

http://www.cisco.com/warp/customer/117/cdn_top_issues/cdn_ti_wccp2_css.shtml
(available to registered users)

http://www.cisco.com/warp/public/117/cdn_top_issues/cdn_ti_wccp2_css.shtml
(available to nonregistered users)


Tech Note:
Configuring Caching Using a Cache Engine

http://www.cisco.com/warp/customer/117/cdn_top_issues/cdn_ti_cache_engine_css.shtml
(available to registered users)

http://www.cisco.com/warp/public/117/cdn_top_issues/cdn_ti_cache_engine_css.shtml
(available to nonregistered users)


Tech Note:
Local Director Issues on the Cisco CSS 11000

http://www.cisco.com/warp/customer/117/cdn_top_issues/cdn_ti_local_directr_css.shtml
(available to registered users)

http://www.cisco.com/warp/public/117/cdn_top_issues/cdn_ti_local_directr_css.shtml
(available to nonregistered users)


IBM

Tech Note:
Configuring Hundreds of TN3270 PUs without Exceeding TN3270-Server Configuration Limitations

http://www.cisco.com/warp/customer/100/tn3270_limitations.html
(available to registered users)

http://www.cisco.com/warp/public/100/tn3270_limitations.html
(available to nonregistered users)


Tech Note:
Configuring DLSw+ Redundancy Between Two Subareas Using RIF-Passthru, DLSw+ Timers, and DLSw+ Backup

http://www.cisco.com/warp/customer/697/dlsw_redundancy.html
(available to registered users)

http://www.cisco.com/warp/public/697/dlsw_redundancy.html
(available to nonregistered users)


LAN

Configuration Example:
Configuring LACP (802.3ad) between a Catalyst 6000 and a Catalyst 4000

http://www.cisco.com/warp/customer/473/126.html
(available to registered users)

http://www.cisco.com/warp/public/473/126.html
(available to nonregistered users)


Configuration Example:
Configuring MST (802.1s)/RSTP(802.1w) on the Catalyst 4000, 6000, and 6500 Series Switches

http://www.cisco.com/warp/customer/473/123.html
(available to registered users)

http://www.cisco.com/warp/public/473/123.html
(available to nonregistered users)


Tech Note:
Quality of Service on Layer 3 Catalyst Switches/Modules Frequently Asked Questions

http://www.cisco.com/warp/customer/473/125.html
(available to registered users)

http://www.cisco.com/warp/public/473/125.html
(available to nonregistered users)


Tech Note:
How to Recover a Missing MSFC from the Supervisor's "show module" Command

http://www.cisco.com/warp/customer/473/124.html
(available to registered users)

http://www.cisco.com/warp/public/473/124.html
(available to nonregistered users)


Tech Note:
Understanding and Tuning Spanning-Tree Protocol Timers

http://www.cisco.com/warp/customer/473/122.html
(available to registered users)

http://www.cisco.com/warp/public/473/122.html
(available to nonregistered users)


Tech Note:
Hardware Troubleshooting for Catalyst 4000/4912G/2980G/2948G Series Switches

http://www.cisco.com/warp/customer/473/121.html
(available to registered users)

http://www.cisco.com/warp/public/473/121.html
(available to nonregistered users)


Network Management Software (NMS)

Configuration Example:
How To Uninstall Cisco WAN Manager (CWM)

http://www.cisco.com/warp/customer/477/CWM/uninstall_cwm_7108.shtml
(available to registered users)

http://www.cisco.com/warp/public/477/CWM/uninstall_cwm_7108.shtml
(available to nonregistered users)


Tech Note:
How To Change the Size of the Cisco WAN Manager Database

http://www.cisco.com/warp/customer/477/CWM/cwm_db_9330.html
(available to registered users)

http://www.cisco.com/warp/public/477/CWM/cwm_db_9330.html
(available to nonregistered users)


Tech Note:
Restarting the Cisco WAN Manager Core after a File System Gets Full

http://www.cisco.com/warp/customer/477/CWM/cwm_full_filesystem_8533.html
(available to registered users)

http://www.cisco.com/warp/public/477/CWM/cwm_full_filesystem_8533.html
(available to nonregistered users)


Tech Note:
Windows 98 Second Edition Clients Not Registered with Dynamic DNS

http://www.cisco.com/warp/customer/477/CNR/Win98_SE-19054.html
(available to registered users)

http://www.cisco.com/warp/public/477/CNR/Win98_SE-19054.html
(available to nonregistered users)


Tech Note:
Remote Syslog Analyzer/Collector Not Binding to the RME Server

http://www.cisco.com/warp/customer/477/RME/remote-syslog-19111.html
(available to registered users)

http://www.cisco.com/warp/public/477/RME/remote-syslog-19111.html
(available to nonregistered users)


Network Security

Tech Note:
Configuring a PIX® Firewall to Allow Remote Access to Shared Folders on an NT Domain

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

http://www.cisco.com/warp/public/110/pixnetbios.html
(available to nonregistered users)


Optical Platforms

Tech Note:
Troubleshooting Bit Error Rate Errors on SONET Links

http://www.cisco.com/warp/customer/127/biterrorrate_16149.html
(available to registered users)

http://www.cisco.com/warp/public/127/biterrorrate_16149.html
(available to nonregistered users)


Tech Note:
Understanding the Serial and Part Number Labels on the Cisco ONS 15454

http://www.cisco.com/warp/customer/127/ONS_15454/numbers_18280.html
(available to registered users)

http://www.cisco.com/warp/public/127/ONS_15454/numbers_18280.html
(available to nonregistered users)


Tech Note:
Upgrading SCC Master Software

http://www.cisco.com/warp/customer/127/ONS_15800/scc_18923.html
(available to registered users)

http://www.cisco.com/warp/public/127/ONS_15800/scc_18923.html
(available to nonregistered users)


Tech Note:
B1 Commands for CMP-W

http://www.cisco.com/warp/customer/127/ONS_15800/b1_commands_for_cmp.html
(available to registered users)

http://www.cisco.com/warp/public/127/ONS_15800/b1_commands_for_cmp.html
(available to nonregistered users)


Tech Note:
Troubleshooting Physical Layer Alarms on SONET and SDH Links

http://www.cisco.com/warp/customer/127/sonetalarms_16154.html
(available to registered users)

http://www.cisco.com/warp/public/127/sonetalarms_16154.html
(available to nonregistered users)


Tech Note:
Understanding Concatenated and Channelized SONET Interfaces on Cisco Routers

http://www.cisco.com/warp/customer/127/concat_16147.html
(available to registered users)

http://www.cisco.com/warp/public/127/concat_16147.html
(available to nonregistered users)


Tech Note:
Understanding APS Versions on POS Interfaces

http://www.cisco.com/warp/customer/127/aps_versions_16144.html
(available to registered users)

http://www.cisco.com/warp/public/127/aps_versions_16144.html
(available to nonregistered users)


Tech Note:
Understanding APS Reflector Channel

http://www.cisco.com/warp/customer/127/refl_chan_16143.html
(available to registered users)

http://www.cisco.com/warp/public/127/refl_chan_16143.html
(available to nonregistered users)


Tech Note:
CMP On-Field Troubleshooting Guide

http://www.cisco.com/warp/customer/127/ONS_15800/cmptrb_18925.html
(available to registered users)

http://www.cisco.com/warp/public/127/ONS_15800/cmptrb_18925.html
(available to nonregistered users)


Tech Note:
Hardware Support for Automatic Protection Switching (APS)

http://www.cisco.com/warp/customer/127/aps_support_16140.html
(available to registered users)

http://www.cisco.com/warp/public/127/aps_support_16140.html
(available to nonregistered users)


Tech Note:
Understanding the Path Trace Byte (J1) on POS Interfaces

http://www.cisco.com/warp/customer/127/POS/path_trace_byte.html
(available to registered users)

http://www.cisco.com/warp/public/127/POS/path_trace_byte.html
(available to nonregistered users)


White Paper:
Routing Updates Over APS on POS Interfaces

http://www.cisco.com/warp/customer/127/aps_routing_16142.html
(available to registered users)

http://www.cisco.com/warp/public/127/aps_routing_16142.html
(available to nonregistered users)


Routers

Tech Note:
Troubleshooting Input Drops on the Cisco 12000 Series Internet Router

http://www.cisco.com/warp/customer/63/ts_inputdrops_12000_18004.html
(available to registered users)

http://www.cisco.com/warp/public/63/ts_inputdrops_12000_18004.html
(available to nonregistered users)


Tech Note:
How to Read the Output of the "show controller frfab | tofab queue" Commands on a Cisco 12000 Series Internet Router

http://www.cisco.com/warp/customer/63/fabqueues_18002.html
(available to registered users)

http://www.cisco.com/warp/public/63/fabqueues_18002.html
(available to nonregistered users)


Tech Note:
Troubleshooting Ignored Errors and No Memory Drops on the Cisco 12000 Series Internet Router

http://www.cisco.com/warp/customer/63/ignored_nomem_18003.html
(available to registered users)

http://www.cisco.com/warp/public/63/ignored_nomem_18003.html
(available to nonregistered users)


Tech Note:
Cisco 12000 Series Internet Router Architecture

http://www.cisco.com/warp/customer/63/arch12000toc_8832.html
(available to registered users)

http://www.cisco.com/warp/public/63/arch12000toc_8832.html
(available to nonregistered users)


Tech Note:
Hardware Troubleshooting for Cisco 12000 Series Internet Router Line Card Failures

http://www.cisco.com/warp/customer/108/hwts_gsrlc_15926.html
(available to registered users)

http://www.cisco.com/warp/public/108/hwts_gsrlc_15926.html
(available to nonregistered users)


TCP/IP: IP Routing

Configuration Example:
Configuring and Verifying the BGP Conditional Advertisement Feature

http://www.cisco.com/warp/customer/459/cond_adv.html
(available to registered users)

http://www.cisco.com/warp/public/459/cond_adv.html
(available to nonregistered users)


Configuration Example:
Sample Configurations of BGP across the Cisco PIX Firewall

http://www.cisco.com/warp/customer/459/BGP-PIX.htm
(available to registered users)

http://www.cisco.com/warp/public/459/BGP-PIX.htm
(available to nonregistered users)


Tech Note:
Troubleshooting Prefix Inconsistencies with Cisco Express Forwarding

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

http://www.cisco.com/warp/public/105/cefincon.html
(available to nonregistered users)


Tech Note:
Troubleshooting Incomplete Adjacencies with CEF

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

http://www.cisco.com/warp/public/105/cef_incomp.html
(available to nonregistered users)


Voice, Telephony, and Messaging

Configuration Example:
Configuring Network Side ISDN BRI Voice Interface Cards

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

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


Configuration Example:
Preserving PBX Features across IP Networks: Configuring Hookflash Relay on FXS/FXO Voice Ports

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

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


Tech Note:
ART Logic: How Calls are Classified

http://www.cisco.com/warp/customer/788/AVVID/artlogic_5300.html
(available to registered users)

http://www.cisco.com/warp/public/788/AVVID/artlogic_5300.html
(available to nonregistered users)


Tech Note:
How To Adjust Quiet Parameter Settings for Cisco Unity™ Software with Microsoft Exchange

http://www.cisco.com/warp/customer/788/AVVID/UnityQuietParameter.html
(available to registered users)

http://www.cisco.com/warp/public/788/AVVID/UnityQuietParameter.html
(available to nonregistered users)


Tech Note:
NIMDA Patch Does Not Appear on the Cisco Unity 3.1(1) Service Packs Disc

http://www.cisco.com/warp/customer/788/AVVID/NIMDApatch.html
(available to registered users)

http://www.cisco.com/warp/public/788/AVVID/NIMDApatch.html
(available to nonregistered users)


Tech Note:
Cisco Unity 3.1(1): Internet Explorer Software Reinstallation

http://www.cisco.com/warp/customer/788/AVVID/IE55Reinstall.html
(available to registered users)

http://www.cisco.com/warp/public/788/AVVID/IE55Reinstall.html
(available to nonregistered users)


Tech Note:
Troubleshooting EM_PARK Issues for E&M Digital CAS Signaling

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

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


Tech Note:
Troubleshooting the DSP on NM-HDV for Cisco 2600/3600 Series Routers

http://www.cisco.com/warp/customer/788/products/dsp-trbl.html
(available to registered users)

http://www.cisco.com/warp/public/788/products/dsp-trbl.html
(available to nonregistered users)


Tech Note:
A New Application to Distinguish Modem and Voice Calls on Cisco Universal Gateways AS5350, AS5400, and AS5850

http://www.cisco.com/warp/customer/788/voip/modem_voice_gateway_9374.html
(available to registered users)

http://www.cisco.com/warp/public/788/voip/modem_voice_gateway_9374.html
(available to nonregistered users)


Tech Note:
Understanding H.323 Gatekeepers

http://www.cisco.com/warp/customer/788/voip/understand-gatekeepers.html
(available to registered users)

http://www.cisco.com/warp/public/788/voip/understand-gatekeepers.html
(available to nonregistered users)


Tech Note:
Understanding, Configuring, and Troubleshooting Resource Allocation Indication

http://www.cisco.com/warp/customer/788/voip/ram.html
(available to registered users)

http://www.cisco.com/warp/public/788/voip/ram.html
(available to nonregistered users)


Tech Note:
Understanding and Troubleshooting Gatekeeper TTL and Aging Out Process

http://www.cisco.com/warp/customer/788/voip/gk_time2live.html
(available to registered users)

http://www.cisco.com/warp/public/788/voip/gk_time2live.html
(available to nonregistered users)


Tech Note:
Understanding Delay in Packet Voice Networks

http://www.cisco.com/warp/customer/788/voip/delay-details.html
(available to registered users)

http://www.cisco.com/warp/public/788/voip/delay-details.html
(available to nonregistered users)


VPN

Configuration Example:
How to Manually Uninstall the Cisco VPN Client 3.5 for Windows

http://www.cisco.com/warp/customer/471/vpn3K_uninstall.html
(available to registered users)

http://www.cisco.com/warp/public/471/vpn3K_uninstall.html
(available to nonregistered users)


Configuration Example:
Configuring Multiple-Identity Certificate Authorities on Cisco IOS® Routers

http://www.cisco.com/warp/customer/707/mult-id-ca.html
(available to registered users)

http://www.cisco.com/warp/public/707/mult-id-ca.html
(available to nonregistered users)


Configuration Example:
Configuring DN-Based Crypto Maps for VPN Device Access Control

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

http://www.cisco.com/warp/public/471/vpn_dn.html
(available to nonregistered users)


Configuration Example:
How to Configure LAN-to-LAN IPSec between a Router and a PIX Firewall Using Digital Certificates

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

http://www.cisco.com/warp/public/707/lan_to_lan_ipsec_pix_rtr_cert.html
(available to nonregistered users)


Configuration Example:
Configuring IPSec from VPN 3000 Client Version 3.5 Solaris to a VPN 3000 Concentrator

http://www.cisco.com/warp/customer/471/vpn3k_sol_concen.html
(available to registered users)

http://www.cisco.com/warp/public/471/vpn3k_sol_concen.html
(available to nonregistered users)


Configuration Example:
Configuring Cisco Secure PIX Firewall 6.x and Cisco VPN 3000 Clients with Microsoft Windows 2000 IAS RADIUS Authentication

http://www.cisco.com/warp/customer/110/cvpn3k_pix_ias.html
(available to registered users)

http://www.cisco.com/warp/public/110/cvpn3k_pix_ias.html
(available to nonregistered users)


Configuration Example:
Configuring High Availability Features for Site-to-Site IPSec VPNs

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

http://www.cisco.com/warp/public/707/ipsec_feat.html
(available to nonregistered users)


Configuration Example:
Configuring Cisco VPN Client 3.5 and the Cisco Integrated Client to Secure Nonencrypted Traffic While Using Split Tunneling

http://www.cisco.com/warp/customer/471/vpn35-split.html
(available to registered users)

http://www.cisco.com/warp/public/471/vpn35-split.html
(available to nonregistered users)


Configuration Example:
Configuring IPSec Tunnel to Route Through a Hub and Multiple Remote Sites

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

http://www.cisco.com/warp/public/707/multiroute.html
(available to nonregistered users)


Configuration Example:
Configuring the Cisco VPN Client to Tunnel to Two Remote Sites Through One Hub PIX Firewall

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

http://www.cisco.com/warp/public/110/client-pixhub.html
(available to nonregistered users)


Configuration Example:
Configuring IPSec over TCP on a Cisco VPN 3000 Concentrator with VPN Client Release 3.5

http://www.cisco.com/warp/customer/471/vpn3k_ipsec_tcp.html
(available to registered users)

http://www.cisco.com/warp/public/471/vpn3k_ipsec_tcp.html
(available to nonregistered users)


Configuration Example:
Configuring E-Mail Alerts on the Cisco VPN 3000 Concentrator

http://www.cisco.com/warp/customer/471/vpn3k_email_alerts.html
(available to registered users)

http://www.cisco.com/warp/public/471/vpn3k_email_alerts.html
(available to nonregistered users)


Configuration Example:
How to Manually Uninstall the Cisco VPN 5000 Client for Windows 2000

http://www.cisco.com/warp/customer/471/vpn5K_uninstall.html
(available to registered users)

http://www.cisco.com/warp/public/471/vpn5K_uninstall.html
(available to nonregistered users)


Tech Note:
Resolving Traffic Problems with Cisco VPN 5000 Client on an IBM ThinkPad T22 with Intel Pro/100 SP Mobile Combo Adapter

http://www.cisco.com/warp/customer/471/vpn5k-ibm-intel.html
(available to registered users)

http://www.cisco.com/warp/public/471/vpn5k-ibm-intel.html
(available to nonregistered users)


Tech Note:
PPTP Frequently Asked Questions

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

http://www.cisco.com/warp/public/471/pptp_faq.html
(available to nonregistered users)


WAN

Tech Note:
Load Balancing and Backup over X.25

http://www.cisco.com/warp/customer/133/x25_18880.html
(available to registered users)

http://www.cisco.com/warp/public/133/x25_18880.html
(available to nonregistered users)


Wireless Products

Configuration Example:
Configuring the BSE342 and BSM342 Base Stations

http://www.cisco.com/warp/customer/102/wlan/bsxconfig-19134.html
(available to registered users)

http://www.cisco.com/warp/public/102/wlan/bsxconfig-19134.html
(available to nonregistered users)


Tech Note:
Procedure for Copying and Loading Microcode for Point-to-Multipoint Systems

http://www.cisco.com/warp/customer/102/wwan/p2mp-microcode-5116.html
(available to registered users)

http://www.cisco.com/warp/public/102/wwan/p2mp-microcode-5116.html
(available to nonregistered users)


Tech Note:
Cisco Aironet Hardware Association Matrix

http://www.cisco.com/warp/customer/102/wlan/matrix-19242.html
(available to registered users)

http://www.cisco.com/warp/public/102/wlan/matrix-19242.html
(available to nonregistered users)


Tech Note:
Fixed Wireless: Point-to-Point Alarms

http://www.cisco.com/warp/customer/102/wwan/alarms-12521.html
(available to registered users)

http://www.cisco.com/warp/public/102/wwan/alarms-12521.html
(available to nonregistered users)


Tech Note:
Cisco Aironet Client Adapter Installation Tips for Windows NT v4.0

http://www.cisco.com/warp/customer/102/wlan/nt-19057.html
(available to registered users)

http://www.cisco.com/warp/public/102/wlan/nt-19057.html
(available to nonregistered users)


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