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Release Notes for the Cisco AS5800 for  Cisco  IOS Release 12.0(1)

Release Notes for the Cisco AS5800 for  Cisco  IOS Release 12.0(1)

October 26, 1998

These release notes list the new features and caveats for the Cisco  AS5800 universal access server supported in Cisco  IOS Release 12.0(1). Cisco IOS Release 12.0(1) is based upon the Cisco IOS Release 11.3(2)AA. This release note is updated with each maintenance release of the Cisco  IOS software, which is typically every 6 weeks.

Use these release notes in conjunction with the Release Notes for Cisco IOS Release  12.0 located on Cisco Connection Online (CCO) and the Documentation CD-ROM found at the end of these release notes.

For a list of software caveats that apply to this release, refer to the "Caveats" section later in this document and to the Caveats for Release 12.0 document that accompanies this release note, also located on CCO and the Documentation CD-ROM.

Contents

These release notes discuss the following topics:

Introduction

The Cisco AS5800 is a high-density, ISDN and modem WAN aggregation system that provides digital and analog call termination. It is intended to be used as a service provider dial point-of-presence (POP) or centralized enterprise dial gateway. The Cisco AS5800 consists of a dial shelf, a router shelf, and a system controller:

The Cisco  5814 dial shelf and host Cisco  7206 router shelf communicate over a a dial shelf interconnect cable (DSIC). This nonblocking interconnect supports 100  Mbps, full-duplex data transfer. Data is converted into packets by the feature cards, transmitted to a hub on the dial shelf controller (DSC) card, and from there sent to the router shelf. Conversely, packets from the router shelf are sent to the DSC card, where they are transmitted over the backplane to the modem and trunk cards.

For more information on the Cisco AS5800, refer to the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide (Document Number DOC-5800-SICG=) or the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide (Document Number DOC-5800-HICG) that shipped with your system.

System Requirements

This section describes the system requirements for Release 12.0(1) and includes the following sections:

Memory Requirements

Table 1 describes the memory requirements for the Cisco  AS5800 feature sets supported by Cisco  IOS Release 12.0(1). Flash memory is optional for these Cisco  AS500 images.


Table 1: Cisco AS5800 Memory Requirements
System Components Feature Set Image Name Required
Flash Memory
Required
DRAM Memory
Runs From

Cisco AS5800 Router

IP Plus

c5800-p4-mz

16 MB Flash

64 MB DRAM

RAM

Dial Shelf: Cisco 5814

IP Plus

dsc-c5800-mz

8 MB Flash

32 MB DRAM

RAM

System Controller: Cisco 3640

IP Plus

c3640-c2is-mz

16 MB Flash

64 MB DRAM

RAM

Hardware Supported

The Cisco AS5800 universal access server includes:

Platforms

Interfaces

Modem cards

Modem Code

Cisco IOS Release 12.0(1) and later includes bundled modem code, which is the firmware or portware that runs on the Microcom 12-port and MICA 6-port modem cards. Modem code is bundled with the Cisco IOS software image to eliminate the need to store separate modem code. When the access server starts, the Cisco IOS software unpacks the modem code and loads the proper code on the modem cards. Table 2 lists the current bundled modem code versions.


Table 2: Current Modem Versions
Modem Module Current Bundled Modem Code Version Minimum Cisco IOS Software Release

Microcom modems

Microcom version  3.1.30

11.3(3)T and later

MICA modems

MICA portware version  2.0.1.7

11.3(3)T and later

The show modem mapping command lists all versions of modem code running on the modem modules, residing in system Flash, and bundled with Cisco IOS software. Enter this command to help you decide if you need to update your modem code files.


Note The Cisco factory could have installed a later version of modem code than the one bundled with the Cisco IOS software. When this happens, the factory installs modem code in Flash memory and maps that code to the modems. Unless you fully understand how Cisco IOS software uses modem code, it is important to keep the factory configuration.

The modem code release notes are on CCO and on the Documentation CD-ROM.

Products and Ordering: Cisco Documentation: Access Servers and Access Routers: Access Servers: Cisco  AS5300: Modem Information: Firmware/Portware Release Notes.
Cisco Product Documentation: Access Servers and Access Routers: Access Servers: Cisco  AS5300: Modem Information: Firmware/Portware Release Notes.

Determining Your Cisco IOS Software Release

To determine the version of Cisco IOS software running on your Cisco AS5800 universal access server, log on to the access server and enter the show version User EXEC command:

router> show version
 

The following is sample output from the show version command. The version number is indicated on the second line as shown below:

Cisco Internetwork Operating System Software 
IOS (tm) 5800 Software (C5800-p4-mz), Version 12.0.......
 

Additional command output lines include more information, such as processor revision numbers, memory amounts, hardware IDs, and partition information.

The Cisco AS5800 universal access server contains multiple Cisco IOS software images. Four images are required to run the entire system (see Table 3 ). However, only the first three software images listed require part numbers for ordering.


Table 3: Cisco IOS Software Images
Filename Description

c5800-p4-mz

Router shelf image---Cisco IOS software image supporting the Cisco 7206 router shelf functionality, bundled trunk card, and modem card images.

c7200-boot-mz

Router shelf boot image---Boot helper image for the Cisco  7206 router shelf

dsc-c5800-mz

Dial shelf controller image---Special image for the Cisco  5814 dial shelf controller card

das-c5800-m.ucode

Dial shelf feature board image---Cisco 5814 dial shelf feature card image bundled into the router shelf image

For information on upgrading to a new software release, refer to the Cisco IOS Software Release Upgrade Paths and Packaging Simplification  product bulletin #703 located on CCO. For more information, refer to the "Cisco Connection Online" section later in this document.

On CCO, follow this path:

Products and Ordering: Product Bulletins: Upgrade Paths and Packaging Simplification

Feature Sets

This section lists Cisco  IOS software feature sets available for the Cisco  AS5800. Table 4 uses the following terms to identify features:

Feature Set
Matrix Term
Description

Yes

This feature is offered.

No

This feature is not offered.

In

The "In" column lists the Cisco IOS release that first introduces a feature. For example, (1) means a feature is introduced in 12.0(1). If a cell has a dash in this column, the feature was included in the initial, base release.

Table 4 lists the feature sets supported up to and including Cisco IOS Release 11.3(2)AA. IPSEC listed in this table is an abbreviation for IP Security.


Table 4: Cisco IOS Software Feature Sets for the Cisco AS5800
Features IP Plus In
IBM Support

APPN High-Performance Routing

No

-

APPN MIB Enhancements

No

-

APPN over Ethernet LAN Emulation

No

-

APPN Scalability Enhancements

No

-

Bisync Enhancements:

    • Bisync 3780 Support

    • BSC Extended Addressing

    • Block Serial Tunneling (BSTUN) over Frame Relay

No

-

Cisco MultiPath Channel (CMPC)

No

-

DLSw+ Enhancements:

    • Backup Peer Extensions for Encapsulation Types

    • DLSw+ Border Peer Caching

    • DLSw+ MIB Enhancements

    • DLSw+ SNA Type of Service

    • LLC2-to-SDLC Conversion between PU4 Devices

    • NetBIOS Dial-on-Demand Routing

    • UDP Unicast Enhancement

No

-

FRAS Enhancements:

    • FRAS Boundary Network Node Enhancement

    • FRAS Dial Backup over DLSw+

    • FRAS DLCI Backup

    • FRAS Host

    • FRAS MIB

    • SRB over Frame Relay

No

-

RIF Passthru in DLSw+

No

-

SRB over FDDI on Cisco 4000-M, 4500-M, and 4700-M Routers

No

-

TN3270 LU Nailing

No

-

TN3270 Server Enhancements

No

-

Token Ring LANE

No

-

Tunneling of Asynchronous Security Protocols

No

-

Internet

-

DRP Server Agent

No

-

DRP Server Agent Enhancements

No

-

L2TP

No

-

SS7

No

-

IP Routing

-

Easy IP (Phase 1)

Yes

(1)

Hot Standby Router Protocol (HSRP) over ISL in Virtual LAN Configurations

No

-

IP Enhanced IGRP Route Authentication

Yes

(1)

OSPF LSA Group Pacing

Yes

(1)

OSPF Point-to-Multipoint Networks with Neighbors

Yes

(1)

Per User DNS

No

-

PIM Version 2

Yes

(1)

TCP Enhancements:

    • TCP Selective Acknowledgment

    • TCP Timestamp

Yes

(1)

LAN Support

AppleTalk Access List Enhancements

No

-

DECnet Accounting

No

-

IPX Named Access Lists

No

-

IPX SAP-after-RIP

No

-

NLSP Enhancements

No

-

NLSP Multicast Support

No

-

Management

Cisco Call History MIB Command Line Interface

Yes

(1)

Cisco IOS File System

Yes

(1)

Cisco IOS Internationalization

Yes

(1)

Conditionally Triggered Debugging

Yes

(1)

Entity MIB, Phase 1

Yes

(1)

External Portware Download

No

-

Show Caller Command

No

-

Show Modem Command

No

-

SNMP v2C

Yes

(1)

SNMP Inform Requests

No

-

Virtual Profiles

Yes

(1)

VPDN MIB

No

(1)

VPDN MIB and Syslog Facility

No

-

Multimedia

IP Multicast Load Splitting across Equal-Cost Paths

Yes

(1)

IP Multicast over ATM Point-to-Multipoint Virtual Circuits

Yes

(1)

IP Multicast over Token Ring LANs

Yes

(1)

Stub IP Multicast Routing

Yes

(1)

Quality of Service

RTP Header Compression

No

-

Security

AAA Scalability

No

-

Authenticating ACL

No

-

Automated Double Authentication

No

-

Certificate Authority Interoperability

No

-

Double Authentication

Yes

(1)

Encrypted Kerberized Telnet

No

-

HTTP Security

Yes

(1)

Internet Key Exchange Security Protocol

No

-

IPSec Network Security

No

-

MS-CHAP Support

No

-

Named Method Lists for AAA Authentication and Accounting

No

-

Per-User Configuration

Yes

(1)

Reflexive Access Lists

Yes

(1)

TCP Intercept

No

-

Vendor-Proprietary RADIUS Attributes

Yes

(1)

Vendor-Proprietary RADIUS -Additional Attributes

No

-

Switching

AppleTalk Routing over ISL and IEEE 802.10 in Virtual LANs

No

-

CLNS and DECnet Fast Switching over PPP

No

-

DECnet/Vines/XNS over ISL:

    • Banyan VINES Routing over ISL Virtual LANs

    • DECnet Routing over ISL Virtual LANs

    • XNS Routing over ISL Virtual LANs

No

-

Fast-Switched Policy Routing

Yes

(1)

IPX Routing over ISL Virtual LANs

No

-

VIP Distributed Switching Support for IP Encapsulated in ISL

No

-

Terminal Services

Telnet Extensions for Dialout

No

-

Virtual Templates for Protocol Translation

No

-

WAN Optimization

ATM MIB Enhancements

No

-

PAD Enhancements

No

-

PAD Subaddressing

Yes

(1)

WAN Services

Always On/Dynamic ISDN (AO/DI)

No

-

Bandwidth Allocation Control Protocol

Yes

(1)

Channelized T3

No

-

Dialer Watch

Yes

(1)

E1 R2

No

-

E1 R1 Support for Taiwan only

No

-

Enhanced Local Management Interface (ELMI)

No

-

Frame Relay Enhancements

Yes

(1)

Frame Relay MIB Extensions

Yes

(1)

Frame Relay Router ForeSight

Yes

(1)

GRE VPN

No

-

ISDN Advice of Charge

Yes

(1)

ISDN Caller ID Callback

Yes

(1)

ISDN NFAS

Yes

(1)

Layer 2 Forwarding---Fast Switching

Yes

(1)

Leased-Line ISDN at 128 kbps

No

-

Microsoft Point-to-Point Compression (MPPC)

No

-

MS Callback

Yes

(1)

Modem Management Enhancements

Yes

(1)

Multiple ISDN Switch Types

No

-

National ISDN Switch Types for BRI and PRI Interfaces (NI2)

No

-

PPP over ATM

No

-

Stackable Home Gateway

No

-

Switched 56K Digital Connections

No

-

Telnet Extensions for Dialout

No

-

X.25 Enhancements

Yes

(1)

X.25 on ISDN

Yes

(1)

New and Changed Information

This section lists the new features supported by the Cisco AS5800 for Cisco IOS in Release 12.0(1).

New Features in Release 12.0(1)

The following new features for the Cisco AS5800 universal access server are available for Cisco  IOS Release 12.0(1). Documentation is also provided for these features.

Additional Vendor-Proprietary RADIUS Attributes

Remote Authentication Dial-In User Server (RADIUS) is an access server authentication, authorization, and accounting protocol originally developed by Livingston, Inc. Although an Internet Engineering Task Force (IETF) draft standard for RADIUS specifies a method for communicating vendor-proprietary information between the network access server and the RADIUS server, some vendors have extended the RADIUS attribute set in a unique way. In this release, Cisco  IOS software introduces support for additional vendor-proprietary RADIUS attributes. Users who have implemented security solutions using a vendor-proprietary implementation of RADIUS can now integrate Cisco access routers into their networks more easily.

Microsoft Point-to-Point Compression (MPPC)

Microsoft Point-to-Point Compression (MPPC) is a scheme used to compress Point-to-Point Protocol (PPP) packets between Cisco and Microsoft client devices. The MPPC algorithm is designed to optimize processor and bandwidth utilization in order to support multiple simultaneous connections. The MPPC algorithm uses a Lempel-Ziv (LZ) based algorithm with a continuous history buffer, called a dictionary.

MS-CHAP Support

Microsoft Challenge Handshake Authentication Protocol (MS-CHAP) is the Microsoft version of CHAP. Like the standard version of CHAP, MS-CHAP is used for PPP authentication; in this case, authentication occurs between a PC using Microsoft Windows NT or Microsoft Windows 95 and a Cisco router or access server acting as a network access server (NAS).

MS-CHAP differs from the standard CHAP as follows:

Depending on the security protocols you have implemented, PPP authentication using MS-CHAP can be used with or without Authentication, Authorization and Accounting (AAA) security services. If you have enabled AAA, PPP authentication using MS-CHAP can be used in conjunction with both TACACS+ and RADIUS.

Multiple ISDN Switch Types

The Multiple ISDN Switch Types feature allows you to configure more than one ISDN switch type per router. You can apply an ISDN switch type on a per interface basis, thus extending the existing global isdn switch-type command to the interface level. This allows Basic Rate Interfaces (BRI) and Primary Rate Interfaces (PRI) to run simultaneously on platforms that support both interface types.

The isdn tei command is also extended to the interface level. Terminal endpoint negotiation (TEI) determines when Layer 2 is activated (powerup or first-call).

Named Method Lists for AAA Authorization and Accounting

In earlier Cisco IOS releases, only named authentication method lists were supported under Cisco's Authentication, Authorization, and Accounting (AAA) network security services. With Cisco IOS Release 11.3(3)T, AAA has been extended to support both authorization and accounting named method lists. Named method lists for authorization and accounting function the same way as those for authentication; they allow you to define different methods for authorization and accounting and apply those methods on a per-interface or per-line basis.

National ISDN Switch Types for Basic Rate and Primary Rate Interfaces

National ISDN Switch Types for Basic Rate and Primary Rate Interfaces introduces changes to ISDN switch types for Primary Rate Interfaces (PRI) and Basic Rate Interfaces (BRI) as follows:


Note The command parser will still accept the following switch types: basic-nwnet3, vn2, and basic-net3; however, when viewing the NVRAM configuration using either the show  running  configuration or write terminal command, the basic-net3 or vn3 switch types are displayed respectively.

Performance Data Collection

The Performance Data Collection feature allows a system controller, Cisco 3640, to collect and store SNMP MIB data from its managed router and dial shelves. The system controller then serves as a central point for network management data collection. The system controller collects the raw data from the managed shelves periodically, saves the data, and provides a single access point for a central network management application. The data can then be uploaded to a network management station using FTP or TFTP.

VPDN MIB and Syslog Facility

The Virtual Private Dialup Network (VPDN) Management Information Base (MIB) feature is intended to support all the tables and objects defined in "Cisco VPDN Management MIB" for the user sessions of the VPDN features. There are a number of commands which provide information and statistics through the Command Line Interface (CLI) but not Simple Network Management Protocol (SNMP); the Cisco VPDN MIB has been created to satisfy the need to provide information and statistics through SNMP.

New Features in Release 11.3(2)AA

The following new features for the Cisco AS5800 universal access server are available for
Cisco IOS Release 11.3(2)AA. Documentation is also provided for these features.

The following features are for the Cisco 3640 system controller:

Cisco AS5800 Universal Access Server Feature Module

This feature module presents the new features for the Cisco AS5800 universal access server and includes a description of the system, supported MIBs and RFCs, and configuration tasks including the following:

Cisco IOS File System

The Cisco IOS File System (IFS) feature provides a single interface to all file systems the router uses:

Any other endpoint for reading or writing data (NVRAM, the running configuration, ROM, raw system memory, system bundled microcode, Xmodem, Flash load helper log, Lex interfaces, modems, and BRI MUX interfaces).

Conditionally Triggered Debugging

The Conditionally Triggered Debugging feature limits debugging messages based on their related interface or subinterface. When this feature is enabled, the router will generate debugging messages for packets entering or leaving the router on a specified interface. However, the router will not generate debugging output for packets entering or leaving through a different interface. This feature allows you to focus debugging output on the problematic interface or interfaces. You can specify the interfaces explicitly. For example, you may only want to see debugging messages for one interface or subinterface. You can also turn on debugging for all interfaces that meet specified conditions, such as a particular username, calling party number, or called party number. If you specify multiple conditions, the interface must meet at least one of the conditions.

AAA Scalability

The Authentication, Authorization and Accounting (AAA) Scalability feature enables you to configure and monitor the number of background processes allocated by the PPP manager in the network access server (NAS) to deal with AAA authentication and authorization requests. In previous Cisco IOS releases, only one background process was allocated to handle all AAA requests for PPP. This meant that parallelism in AAA servers could not be fully exploited. The AAA Scalability feature enables you to configure the number of processes used to handle AAA requests for PPP, thus increasing the number of users that can be simultaneously authenticated or authorized.

OSPF LSA Group Pacing

The OSPF LSA group pacing feature allows the router to group together OSPF link state advertisements (LSAs) and pace the refreshing, checksumming, and aging functions. The group pacing results in more efficient use of the router.

OSPF Point-to-Multipoint Networks with Neighbors

OSPF has two new features related to point-to-multipoint networks. One feature applies to broadcast networks; the other feature applies to nonbroadcast networks. On point-to-multipoint, broadcast networks, there is no need to specify neighbors. However, you can specify neighbors with the neighbor command, in which case you should specify a cost to that neighbor. On point-to-multipoint, nonbroadcast networks, you now use the neighbor command to identify neighbors. Assigning a cost to a neighbor is optional.

Before this feature, some OSPF point-to-multipoint protocol traffic was treated as multicast traffic. Therefore, the neighbor command was not needed for point-to-multipoint interfaces because multicast took care of the traffic. Hellos, updates, and acknowledgments were sent using multicast. In particular, multicast hellos discovered all neighbors dynamically. Some customers, however, were using point-to-multipoint on nonbroadcast media (such as classic IP over ATM), so their routers could not dynamically discover their neighbors. This feature allows the neighbor command to be used on point-to-multipoint interfaces. On any point-to-multipoint interface (broadcast or not), the Cisco IOS software assumes the cost to each neighbor is equal. The cost is configured with the
ip ospf cost command. In reality, the bandwidth to each neighbor is different, so the cost should be different. With this feature, you can configure a separate cost to each neighbor. This feature applies to point-to-multipoint interfaces only.

Dialer Watch

Dialer Watch is a backup feature that integrates dial backup with routing capabilities. Prior dial backup implementations used the following conditions to trigger backup:

Prior backup implementations might not have supplied optimum performance on some networks, such as those using Frame Relay multipoint subinterfaces or Frame Relay connections that do not support end-to-end LMI.

Dialer Watch provides reliable connectivity without relying solely on defining interesting traffic to trigger outgoing calls at the central router. Dialer Watch uses the convergence times and characteristics of dynamic routing protocols. Integrating backup and routing features enables Dialer Watch to monitor every deleted route. By configuring a set of watched routes that define the primary interface, you are able to monitor and track the status of the primary interface as watched routes are added and deleted. Monitoring the watched routes is done in the following sequence:

    1. Whenever a watched route is deleted, Dialer Watch checks to see if there is at least one valid route for any of the watched IP addresses defined.

    2. If there is no valid route, the primary line is considered down and unusable.

    3. If there is a valid route for at least one of the defined watched IP addresses, and if the route is pointing to an interface other than the backup interface configured for Dialer Watch, the primary link is considered up.

    4. In the event that the primary link goes down, Dialer Watch is immediately notified by the routing protocol and the secondary link is brought up.

    5. Once the secondary link is up, at the expiration of each idle timeout, the primary link is rechecked.

    6. If the primary link remains down, the idle timer is indefinitely reset.

    7. If the primary link is up, the secondary backup link is disconnected. Additionally, a disable timer can be set to create a delay for the secondary link to disconnect, after the primary link is reestablished.

MS Callback

The MS Callback feature provides client-server callback services for Microsoft Windows 95 and Microsoft Windows NT clients. MS Callback supports the Microsoft Callback Control Protocol (MSCB). MSCB is a Microsoft proprietary protocol used by Windows 95 and Windows NT clients. MS Callback supports negotiated PPP Link Control Protocol (LCP) extensions initiated and agreed upon by the Microsoft client. MS Callback is added to existing PPP Callback functionality. Therefore, if you configure your Cisco  AS5800 to perform PPP Callback using Cisco IOS Release 11.3(2)T or later, MS Callback is automatically available.

MS Callback supports AAA security models using a local database or AAA server. MSCB uses LCP callback options with suboption type 6. The Cisco MS Callback feature supports clients with a user-specified callback number and server-specified (preconfigured) callback number. MS Callback does not affect non-Microsoft machines that implement standard PPP LCP extensions as described in RFC 1570. In this scenario, MS Callback is transparent.

PIM Version 2

Protocol-Independent Multicast (PIM) Version 2 includes the following improvements over PIM Version 1:

PIM Version 1, together with the Auto-RP feature, can perform the same tasks as the PIM Version  2 BSR. However, Auto-RP is a stand-alone protocol, separate from PIM Version 1, and is Cisco proprietary. PIM Version 2 is a standards track protocol in the Internet Engineering Task Force (IETF).

Cisco's PIM Version 2 implementation allows good interoperability and transition between Version  1 and Version 2. You can upgrade to PIM Version 2 incrementally. PIM Versions 1 and 2 can be configured on different routers within one network. Internally, all routers on a shared media network must run the same PIM version. Therefore, if a PIM Version 2 router detects a PIM Version  1 router, the Version 2 router downgrades itself to Version 1 until all Version 1 routers have been shut down or upgraded.

PIM uses the BSR to discover and announce RP-set information for each group prefix to all the routers in a PIM domain. This is the same function accomplished by Auto-RP, but the BSR is part of the PIM Version 2 specification. The BSR mechanism interoperates with Auto-RP.

To avoid a single point of failure, you can configure several candidate BSRs in a PIM domain. A BSR is elected among the candidate BSRs automatically; they use bootstrap messages to discover which BSR has the highest priority. This router then announces to all PIM routers in the PIM domain that it is the BSR.

Routers that are configured as candidate RPs then unicast to the BSR the group range for which they are responsible. The BSR includes this information in its bootstrap messages and disseminates it to all PIM routers in the domain. Based on this information, all routers will be able to map multicast groups to specific RPs. As long as a router is receiving the bootstrap message, it has a current RP map.

DRP Server Agent Enhancements

The DRP Server Agent enhancements are as follows:

VPDN MIB

For VPDN (Virtual Private Dial Network) sessions, information on active tunnels and sessions will be retrievable by SNM P from the VPDN MIB.

SNMP Inform Requests

The following software enhancement was first introduced in Cisco IOS Release 11.3(1)T, and is now available for the Cisco  AS5800. The SNMP Inform Requests feature allows routers to send inform requests to SNMP managers.

Routers can send notifications to SNMP managers when particular events occur. For example, an agent router might send a message to a manager when the agent router experiences an error condition. SNMP notifications can be sent as traps or inform requests. Traps are unreliable because the receiver does not send any acknowledgment when it receives a trap. The sender cannot determine if the trap was received. However, an SNMP manager that receives an inform request acknowledges the message with an SNMP response PDU. If the manager does not receive an inform request, it does not send a response. If the sender never receives a response, the inform request can be sent again. Thus, informs are more likely to reach their intended destination.

Because they are more reliable, informs consume more resources in the router and in the network. Unlike a trap, which is discarded as soon as it is sent, an inform request must be held in memory until a response is received or the request times out. Also, traps are sent only once, while an inform may be retried several times.

The retries increase traffic and contribute to a higher overhead on the network. Thus, traps and inform requests provide a trade-off between reliability and resources. If it is important that the SNMP manager receives every notification, use inform requests. On the other hand, if you are concerned about traffic on your network or memory in the router and you do not need to receive every notification, use traps.

Modem Management Enhancements

This modem management enhancements feature is available for Cisco AS5800 universal access servers using MICA modems. A snapshot of all the firmware versions running on all modems in the access server can be displayed by using the show modem mapping command. This command also shows the source location of each version of firmware (for example, running out of Flash memory, boot Flash memory, or bundled with Cisco IOS software). This command is useful for managing and monitoring multiple versions of modem firmware running in an access server.

Shelf Discovery and Autoconfiguration

The Shelf Discovery and Autoconfiguration feature allows a system controller to automatically discover new shelves and properly configure them to interact with the system controller. The system controller communicates with its managed shelves through the Shelf Discovery Protocol (SDP), which runs on top of UDP.

Health Monitor

The Health Monitor feature monitors key performance attributes of the shelves managed by the system controller. The Health Monitor feature continually polls its managed shelves to obtain the information stored in the Health Monitor MIB. Management stations collect information for all the shelves from the system controller rather than by polling each shelf individually. In addition, you can configure specific performance thresholds for all managed shelves through simple commands on the system controller. The system controller uses SNMP to automatically configure the following on each managed shelf:

When threshold traps are received by the system controller, they are converted to Health Monitor traps and sent to trap destinations configured in the system controller.

Virtual Console

The Virtual Console feature allows you to access dial and router shelves connected to a system controller. During a system controller session, you can connect to a router or dial shelf at the same privilege level as the current system controller session. By entering one command, you can Telnet directly to a shelf, provide a username and password, and then go to the same privilege level as the system controller.

FTP Server

The FTP Server feature configures a router to act as an FTP server. FTP clients can copy files to and from certain directories on the router. In addition, the router can perform many other standard FTP server functions.

Syslog Disk Logging

The Syslog Disk Logging feature allows you to collect, store, and retrieve all managed shelf syslog messages through the system controller. The system controller receives syslog messages from managed shelves and stores these messages in subfiles on its disk. Each syslog message stored in a subfile contains the following information:

In addition, this feature provides an enhanced method of viewing messages in the logging history table. Messages can be displayed based on host IP address, time received, and order receive

Caveats

This section contains open caveats for the current Cisco IOS maintenance release only. For information on caveats in previous maintenance releases, refer to the Caveats for Release 11.3, refer to the "caveates" section in ght Cross-Platform Release Notes for Cisco IOS Release 12.0(1) document located on CCO and the Documentation CD-ROM . This section contains caveats affecting all maintenance releases.


Note If you have an account with CCO, you can use Bug Navigator II to find caveats of any severity for any release. Bug Navigator  II can be found at http://www.cisco.com/support/bugtools, or from CCO, select Software & Support: Technical Tools: Bug Toolkit II.

Open Caveats - Release 12.0(1)

This section describes possibly unexpected behavior by Release 12.0(1). This section describes only severity 1 and 2 caveats.

Access Server

Basic System Services

The workaround is to reconfigure compression (for example, use the no comp and comp stac commands). [CSCdj14601]

IBM Connectivity

00:39:38: %SYS-2-INPUTQ: INPUTQ set, but no IDB, ptr=ADDD9C -Traceback= 148D3A 572A 
4DF4 110064 17DAA2 17B0DA 14CC 10005B4 10047DA

There is currently no workaround for this problem. [CSCdk25935]

hold-queue 200 in
[CSCdk36470]

Interfaces and Bridging

Workaround: When changing encapsulation on a PRI interface, first shut down the interface before configuring new encapsulation. [CSCdj91477]

The workaround is just to proceed regardless of the reset status, as the old HSSI microcode did. [CSCdk39193]

IP Routing Protocols

When enabled, SPD now works as follows:
The default SPD minimum threshold is 10, while the default maximum threshold is 75. To avoid an input interface that takes too many router resources, new packets (SPD or non-SPD) received from that interface are dropped when the interface has more than the input hold queue limit of input packets floating somewhere in the router. [CSCdj45202]

The following conditions must exist for policy routing to fail:

The workaround is to use the clear ip cache command, or remove fast-switching by using the no ip route-cache command. [CSCdk12537]

%SYS-3-CPUHOG: Task ran for 2672 msec (87/71), Process = IP Input

[CSCdk26388]

A workaround is to use the shut then the no shut commands on the interface. [CSCdk40372]

Miscellaneous

The workaround is to replace the EIP interface processors with VIP interface processors and Ethernet Port adapters. A less effective workaround is to reduce the number of HSRP groups, or to increase the HSRP hello and hold time. [CSCdj29595]

The current workaround is to disable fastswitching on the LANs. [CSCdj91142]

The workaround is to use a modem that has the Broadcom Chip set. Since the SYNC message is a well known size, the Broadcom chip set can read the CMTS Timestamp without looking at the length field. [CSCdk46537]

The workaround is to enable FIFO queuing on the interface. [CSCdk50099]

Novell IPX, XNS, and Apollo Domain

The workaround is to disable the debug x25 events command. [CSCdk23276]

TCP/IP Host-Mode Services

Wide-Area Networking

A workaround is to configure the aaa accounting update periodic x command at startup time. Set x to a large number to avoid lots of periodic update accounting records. [CSCdk43196]

Enter hex value: 221B763A 22093530 2206C92C FFFFFFFF 
0x221B763A:_getbuffer(0x22052d90+0x16487a)+0x30 
0x22093530:_L2D_Srq_Task(0x22052d90+0x4049e)+0x302 
0x2206C92C:_TaskBegin(0x22052d90+0x19b86)+0x16 
0xFFFFFFFF:_etext(0x22052d90+0xa1ae78)+0xdd5923f7 Enter hex value: 221B763A 22093530 
2206C92C FFFFFFFF 0x221B763A:_getbuffer(0x22052d90+0x16487a)+0x30 
0x22093530:_L2D_Srq_Task(0x22052d90+0x4049e)+0x302 
0x2206C92C:_TaskBegin(0x22052d90+0x19b86)+0x16 
0xFFFFFFFF:_etext(0x22052d90+0xa1ae78)+0xdd5923f7

[CSCdk46784]

Resolved Caveats - Release 12.0(1)

Since Release 12.0(1) is the first maintenance release of Cisco IOS software release 12.0, there is no history of resolved caveats. The next maintenance release of Cisco IOS 12.0(2) will provide a list of resolved caveats.

Related Documentation

This section describes the documentation available for the Cisco AS5000. Typically these documents consist of hardware installation guides, software installation guide guides, Cisco IOS configuration and command references, system error messages, and feature modules, which are updates to the Cisco IOS documentation. Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online only.

The most up-to-date documentation can be found on the Web via Cisco Connection Online (CCO) and on the latest Documentation CD-ROM. These electronic documents might contain updates and modifications made after the paper documents were printed. For information on CCO, refer to the "Cisco Connection Online" section later in this document. For more information on to the CD-ROM, refer to the "Documentation CD-ROM " section later in this document.

Release-Specific Documents

Use these release notes with:

Products and Ordering: More Information: Product Bulletins. Scroll to Software. Under Cisco IOS 12.0, click the Upgrade Paths bulletin. The Upgrade Paths and Packaging Simplification bulletin appears.

Feature Modules

The documentation for new Release 12.0(1) features is available online only. This new feature documentation includes configuration tasks and new and changed command reference pages that supplement the Cisco IOS Release 11.3 configuration guide and command reference publications.

Cisco IOS Release 11.3 documentation and Release 11.3 AA feature documentation can be found on CCO and the Documentation CD-ROM:

Platform Documents

The Cisco  AS5800 universal access server is comprised of the Cisco  5814 dial shelf, the Cisco  7206 router shelf, and an optional AC power supply. To help you manage multiple systems, the Cisco  3640 system controller network management system is available to provide local data gathering and monitoring functions for multiple hardware platforms within a single point of presence (POP).

The Cisco 3640 system controller facilitates the management of AS5800 systems by performing automated monitoring and data collection. The Cisco 3640 has 220 MB of non-volatile storage for the temporary storage of log files, images, and MIB statistics. Because it is based upon the
Cisco 3640 modular access router, the Cisco 3640 also provides connectivity and routing for an out-of-band management network while it is performing network management functions.

The Cisco  AS5800 universal access server and the Cisco 3640 system controller network management system are available to help you manage your dial POP site efficiently and effectively. Each of these products is supported by documentation listed in Table 1.


Table 5: Cisco  AS5800 Universal Access Server---Related Documents
Cisco Product Document Title

Cisco  AS5800 universal access server

  • Cisco  AS5800 Universal Access Server Hardware Installation and Configuration Guide

  • Cisco  AS5800 Universal Access Server Regulatory Compliance and Safety Information

  • Configuration notes, updates, feature modules, and release notes

Cisco  7206 router shelf

  • Cisco  7206 Installation and Configuration Guide

  • Regulatory Compliance and Safety Information for the Cisco  7206

  • Configuration notes, updates, feature modules, and release notes

Cisco  3640 system controller

  • Cisco 3640 Router Installation and Configuration Guide

  • Cisco  3640 System Controller Installation and Configuration Guide

  • Regulatory Compliance and Safety Information for the Cisco  3640

  • Configuration notes, updates, feature modules, and release notes

Cisco  IOS software

  • Configuration guides

  • Command references

  • Feature modules, configuration notes, updates, and release notes

Cisco marketing tools

  • Cisco Information Packet

  • Cisco Product Catalog

  • Cisco Product Bulletin 738

This documentation can be found on CCO and the Documentation CD-ROM:

Cisco IOS Software Documentation

The following are some of the Cisco  IOS Release document types that are available in electronic form, printed form, or both forms:

Table 6 lists the Cisco  IOS software documentation set that contains Cisco  IOS configuration guides, command references, and several supporting documents. The document set is available in electronic form, and is also available in printed form if you special order it.


Note The most current Cisco  IOS documentation can be found on the Web and the latest Documentation CD-ROM. These electronic documents contain updates and modifications made after the paper documents were printed. See the section "Online Navigation for Software Documentation" for more details.

Online Navigation for Software Documentation

You can access the Cisco IOS software electronic documents from Cisco Connection Online (CCO) on the Web and the Cisco Documentation CD-ROM:

The following are some of the types of Cisco IOS Release 12.0 documents available:

For Product Bulletins on CCO, the path is as follows from Cisco Connection Online: Products and Ordering: More Information: Product Bulletins. In the Software area, under Cisco IOS 12.0, click Cisco IOS Software Release 12.0 Upgrade Paths.

On CCO or the Documentation CD-ROM, go to Cisco IOS Release 12.0 and click Cisco IOS Release 12.0 Configuration Guides: Command References. Then click Configuration Guide Master Index or Command Reference Master Index. To access documentation related to an index entry, click on the page number following the entry.
On CCO or the Documentation CD-ROM, go to Cisco IOS Release 11.3 and click Cisco IOS Release 11.3 Configuration Guides: Command References. Next, click Cisco IOS 11.3 New Features. To access configuration documentation for a feature, do one of the following:

For additional information about the CCO and Documentation CD-ROM, refer to the sections "Cisco Connection Online" and "Documentation CD-ROM " at the end of these release notes.

Documentation Modules

Each module consists of two books: a configuration guide and a corresponding command reference. Chapters in a configuration guide describe protocols, configuration tasks, and Cisco IOS software functionality and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Each configuration guide can be used in conjunction with its corresponding command reference.


Note Due to a production problem, many source-route bridging commands were omitted from the printed version of the Cisco IOS Software Command Summary (part number 78-4746-01). For complete documentation of all source-route bridging commands, refer to the Bridging and IBM Networking Command Reference (part number 78-4743-01). You can also obtain the most current documentation on the Documentation CD-ROM or Cisco Connection Online (CCO).

Master Indexes

Two master indexes provide indexing information for the Cisco IOS software documentation set: an index for the configuration guides and an index for the command references. In addition, individual books contain a book-specific index.

The Cisco IOS documentation set consists of the following books and chapter topics:


Table 6: Cisco IOS Software Documentation Set
Books Chapter Topics

  • Configuration Fundamentals Configuration Guide

  • Configuration Fundamentals Command Reference

Configuration Fundamentals Overview

Cisco IOS User Interfaces

File Management

Interface Configuration

System Management

  • Network Protocols Configuration Guide, Part 1

  • Network Protocols Command Reference, Part 1

IP Addressing

IP Services

IP Routing Protocols

  • Network Protocols Configuration Guide, Part 2

  • Network Protocols Command Reference, Part 2

AppleTalk

Novell IPX

  • Network Protocols Configuration Guide, Part 3

  • Network Protocols Command Reference, Part 3

Apollo Domain

Banyan VINES

DECnet

ISO CLNS

XNS

  • Wide-Area Networking Configuration Guide

  • Wide-Area Networking Command Reference

ATM

Frame Relay

SMDS

X.25 and LAPB

  • Security Configuration Guide

  • Security Command Reference

AAA Security Services

Security Server Protocols

Traffic Filtering

Network Data Encryption

Passwords and Privileges

Neighbor Router Authentication

IP Security Options

  • Dial Solutions Configuration Guide

  • Dial Solutions Command Reference

Dial Business Solutions and Examples

Dial-In Port Setup

DDR and Dial Backup

Remote Node and Terminal Service

Cost-Control and Large-Scale Dial Solutions

VPDN

  • Cisco IOS Switching Services Configuration Guide

  • Cisco IOS Switching Services Command Reference

Switching Paths for IP Networks

Fast Switching

Autonomous Switching

NetFlow Switching

Optimum Switching

Virtual LAN (VLAN) Switching and Routing

Inter-Switch Link Protocol Encapsulation

IEEE 802.10 Encapsulation

LAN Emulation

  • Bridging and IBM Networking Configuration Guide

  • Bridging and IBM Networking Command Reference

Transparent Bridging

Source-Route Bridging

Remote Source-Route Bridging

DLSw+

STUN and BSTUN

LLC2 and SDLC

IBM Network Media Translation

DSPU and SNA Service Point

SNA Frame Relay Access Support

APPN

NCIA Client/Server Topologies

IBM Channel Attach

  • Cisco IOS Software Command Summary

  • Dial Solutions Quick Configuration Guide

  • System Error Messages

  • Debug Command Reference


Note The Cisco Management Information Base (MIB) User Quick Reference publication is no longer being published. For the latest list of MIBs supported by Cisco, see the Cisco Network Management Toolkit on Cisco Connection Online (CCO). On CCO, go to Software and Support; click Software Center: Network Management Products: Cisco Network Management Toolkit: Cisco MIBs.

Service and Support

For service and support for a product purchased from a reseller, contact the reseller. Resellers offer a wide variety of Cisco service and support programs, which are described in the section "Service and Support" in the information packet that shipped with your product.


Note If you purchased your product from a reseller, you can access CCO as a guest. CCO is Cisco Systems' primary real-time support channel. Your reseller offers programs that include direct access to CCO services.

For service and support for a product purchased directly from Cisco, use CCO.

Software Configuration Tips on the Cisco TAC Home Page

The following URL contains links to access helpful tips on configuring your Cisco products:

http://www.cisco.com/kobayashi/serv_tips.shtml

This URL is subject to change without notice. If it changes, point your web browser to http://www.cisco.com/, and follow this path: Software & Support, Technical Tips (button on left margin).

"Hot Tips" are popular tips and hints gathered from the Cisco Technical Assistance Center (TAC). Most of these documents are available from the TAC FAX-on-demand service. To access FAX-on-demand and receive documents at your FAX machine from the USA, call 888-50-CISCO (888-502-4726). From other areas, call 650-596-4408.

The following sections are provided from the Technical Tips page:

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:

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.

Documentation CD-ROM

Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more current than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation 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.



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