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Release Notes for Cisco MC3810 for
Cisco IOS Release  12.0(2)T

Release Notes for Cisco MC3810 for
Cisco IOS Release  12.0(2)T

December 14, 1998

These release notes describe new features for the Cisco MC3810 multiservice access concentrator that support Cisco IOS Release 12.0 T, up to and including 12.0(2)T. Cisco IOS Release 12.0(2)T is based on Cisco IOS Release 12.0. These release notes are updated with each maintenance release of the Cisco IOS software, which is typically every 6 weeks.

Use these release notes in conjunction with the cross-platform Release Notes for Cisco IOS Release 12.0 T located on Cisco Connection Online (CCO) and the Documentation CD-ROM.

For a list of software caveats that apply to Release 12.0(2)T, refer to the "Caveats" section. Also, you may refer to the Caveats for Cisco IOS Release 12.0 T  document accompanying these release notes, and also located on CCO  and the Documentation CD-ROM.

Contents

These release notes discuss the following topics:

Introduction

As part of an enterprise backbone or as customer premises equipment (CPE) to service provider-managed network services, the Cisco MC3810 multiservice access concentrator reduces operating costs and complexity, and increases network throughput and performance. Interoperable with the broad Cisco networking portfolio, the Cisco MC3810 is a practical investment in today's networking requirements and a strategic investment in converging data, voice, and video applications. The Cisco MC3810 is fully supported by Cisco IOS software for multiprotocol routing, bridging, and Systems Network Architecture (SNA).

To make file management easier, the Cisco MC3810 provides a complete file system for software images, message files, and reports. The standard Flash memory size is 8 MB, and a 16-MB upgrade option is available. The 16-MB version can hold two code images simultaneously for fail-safe upgrades.

Management and configuration of the Cisco MC3810 should be familiar to the Cisco IOS user and compatible with existing management systems. As such, it provides a superset of the Cisco command-line interface (CLI). The Cisco MC3810 can be managed by standard Cisco management platforms and facilities such as CiscoView and the native remote log-in facilities provided by Telnet and rlogin. Three types of configuration interfaces are provided:

The HTTP-based interface allows configuration from any Web browser such as Netscape Navigator or Microsoft Explorer. The SNMP MIB allows management of the Cisco MC3810 from SNMP managers (for example, HP OpenView).

System Requirements

This section describes the system requirements for Release 12.0(2)T and includes the following sections:

Memory Requirements

Table 1 lists the memory requirements for the Cisco  MC3810 multiservice access concentrator for Cisco IOS Release 12.0(2)T.


Table 1:
Feature Set Image Name Required Flash Memory Required DRAM Memory Runs From

Cisco MC3810 IOS IP Plus

mc3810-is-mz

8 MB

32 MB

RAM

Cisco MC3810 IOS IP/ATM Plus

mc3810-a2is-mz

8 MB

32 MB

RAM

Cisco MC3810 IOS Enterprise Plus

mc3810-js-mz

8 MB

32 MB

RAM

Cisco MC3810 Enterprise/ATM Plus

mc3810-a2js-mz

8 MB

32 MB

RAM

Memory Requirements for the Cisco MC3810

Hardware Supported

Cisco IOS Release 12.0(2)T supports the following platform:

Determining Your Cisco IOS Software Release

To determine the version of Cisco IOS software currently running on the Cisco MC3810 multiservice access concentrator, log into the platform and use the show version EXEC command. 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) MC3810 Software (mc3810-js-mz), Version 12.0(2)T, RELEASE SOFTWARE

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

Updating to a New Release

At the time of printing, no product bulletins were available for upgrading to Cisco IOS Release  12.0  T. For general information on updating to a new software release, refer to the Cisco IOS Software Release Upgrade Paths and Packaging Simplification product bulletin located on CCO. On CCO, follow this path:

Products and Ordering: More Information: Product Bulletins .  Scroll to Software. Under Cisco  IOS 11.3, click the Upgrade Paths bulletin.

This bulletin does not contain information specific to Release 12.0 T, but it does provide updating information that might apply to Release 12.0 T.

Feature Set Table

Cisco IOS software is packaged in feature sets (also called software images) depending on the platform. Each feature set contains a specific set of Cisco IOS features. The following section lists the feature set matrix and the features supported by each feature set.

The feature set matrix shows the feature set organization and lists which feature sets are available on the Cisco MC3810 for Release 12.0 T. Table 2 lists the Cisco IOS software feature sets available for the Cisco MC3810 in Cisco IOS Release 12.0 T, including the feature set, feature set matrix term, and software image name.


Table 2: Feature Sets Supported by the Cisco MC3810
Feature Sets Feature Set Matrix Term Software Image

IP Standard
Feature Sets

IP Plus

mc3810-is-mz

IP/ATM Plus

mc3810-a2is-mz

Enterprise Standard
Feature Sets

Enterprise Plus

mc3810-js-mz

Enterprise ATM Plus

mc3810-a2js-mz

To determine what features are available with each feature set, see Table 3. The table summarizes what features you can use when running a specific feature set on the Cisco MC3810 for Cisco IOS Release 12.0(2)T. The feature set tables use the following terms to identify features:


Note This feature set table contains only a selected list of features. This table is not a cumulative or complete list of all the features in each image.


Table 3: Feature List by Feature Set for the Cisco MC3810
Feature Set
Features IP Plus Enterprise Plus IP/ATM Plus Enterprise/ ATM Plus
New Cisco MC3810 Features in Cisco IOS Release 12.0(2)T

 

Call Detail Records (CDR)

Yes

Yes

Yes

Yes

Facility Data Link Capabilities on Multiflex Trunk

Yes

Yes

Yes

Yes

G.726 (ADPCM)

Yes

Yes

Yes

Yes

Cisco MC3810 - IGX 8400 Interworking

Yes

Yes

Yes

Yes

Integrated BRI Backup1

Yes

Yes

Yes

Yes

ISDN PRI QSIG Voice Signaling

Yes

Yes

Yes

Yes

Multi-length Dial Patterns

Yes

Yes

Yes

Yes

OPX Ring-Through

Yes

Yes

Yes

Yes

Permanent Connection

Yes

Yes

Yes

Yes

Preference-based Hunt Groups

Yes

Yes

Yes

Yes

Transparent CCS

Yes

Yes

Yes

Yes

ATM Access

 

Frame Relay-ATM Interworking

No

No

Yes

Yes

PPP Over ATM

No

No

Yes

Yes

RFC 1483

No

No

Yes

Yes

rtVBR, nrtVBR, CBR, UBR

No

No

Yes

Yes

Structured CES2

No

No

Yes

Yes

Traffic Shaping

No

No

Yes

Yes

UNI 3.13

No

No

Yes

Yes

IBM Support  

APPN

No

No

No

No

APPN High-Performance Routing

No

No

No

No

APPN MIB Enhancements

No

No

No

No

APPN over Ethernet LAN Emulation

No

No

No

No

APPN Scalability Enhancements

No

No

No

No

BAN for SNA Frame Relay Support

Yes

Yes

Yes

Yes

Bisync

Yes

Yes

Yes

Yes

Bridging Code Rework

No

No

No

No

Caching and Filtering

Yes

Yes

Yes

Yes

DLSw+

Yes

Yes

Yes

Yes

DLSw (RFC 1795)

Yes

Yes

Yes

Yes

DLSw Version 2 (RFC 1266)

Yes

Yes

Yes

Yes

Downstream PU Concentration (DSPU)

Yes

Yes

Yes

Yes

Frame Relay SNA Support (RFC 1490)

Yes

Yes

Yes

Yes

NCIA

Yes

Yes

Yes

Yes

NetView Native Service Point

Yes

Yes

Yes

Yes

Polled Async

Yes

Yes

Yes

Yes

QLLC

Yes

Yes

Yes

Yes

Response Time Reporter

Yes

Yes

Yes

Yes

RIF Passthru in DLSw+

Yes

Yes

Yes

Yes

SDLC Integration

Yes

Yes

Yes

Yes

SDLC Transport (STUN)

Yes

Yes

Yes

Yes

SDLC-to-LAN Conversion (SDLLC)

Yes

Yes

Yes

Yes

SNA and NetBIOS WAN Optimization

Yes

Yes

Yes

Yes

SRB/RSRB

Yes

Yes

Yes

Yes

SRT

No

No

No

No

SRTLB

Yes

Yes

Yes

Yes

TG/COS

No

No

No

No

TN3270

No

Yes

No

Yes

TN3270 LU Nailing

Yes

No

Yes

No

TN3270 Server Enhancements

Yes

No

Yes

No

IP Routing  

BGP

Yes

Yes

Yes

Yes

BGP4

Yes

Yes

Yes

Yes

EGP

Yes

Yes

Yes

Yes

Enhanced IGRP

Yes

Yes

Yes

Yes

Enhanced IGRP Optimizations

Yes

Yes

Yes

Yes

ES-IS

No

Yes

No

Yes

GRE VPN

No

Yes

No

Yes

IGRP

Yes

Yes

Yes

Yes

IS-IS

No

Yes

No

Yes

Named IP Access Control List

Yes

Yes

Yes

Yes

Network Address Translation (NAT)

Yes

Yes

Yes

Yes

NHRP

Yes

Yes

Yes

Yes

On Demand Routing

Yes

Yes

Yes

Yes

OSPF

Yes

Yes

Yes

Yes

OSPF Not-So-
Stubby-Areas (NSSA)

Yes

Yes

Yes

Yes

OSPF On Demand Circuit (RFC  1793)

Yes

Yes

Yes

Yes

Protocol-Independent Multicast (PIM)

Yes

Yes

Yes

Yes

PIM Version 2

Yes

Yes

Yes

Yes

Policy-Based Routing

Yes

Yes

Yes

Yes

RIP

Yes

Yes

Yes

Yes

RIP Version 2

Yes

Yes

Yes

Yes

LAN Support  

Apollo Domain

No

Yes

No

Yes

AppleTalk Phase 2

No

Yes

No

Yes

Banyan VINES

No

Yes

No

Yes

Concurrent Routing and Bridging

Yes

Yes

Yes

Yes

DECnet IV

No

Yes

No

Yes

DECnet V

No

Yes

No

Yes

GRE

No

Yes

No

Yes

Integrated Routing and Bridging (IRB)

Yes

Yes

Yes

Yes

IP

Yes

Yes

Yes

Yes

LAN Extension Host

No

No

No

No

Multiring

No

No

No

No

Novell IPX

No

Yes

No

Yes

OSI

No

Yes

No

Yes

Source-Route Bridging

Yes

Yes

Yes

Yes

Transparent and Translational Bridging

Yes

Yes

Yes

Yes

VLANs (ISL & IEEE 802.10)

No

Yes

No

Yes

XNS

No

Yes

No

Yes

Management  

AutoInstall

Yes

Yes

Yes

Yes

Automatic Modem Configuration

Yes

Yes

Yes

Yes

HTTP Server

Yes

Yes

Yes

Yes

Cisco IOS File System

Yes

Yes

Yes

Yes

RMON Events and Alarms

No

No

No

No

RMON Full

No

No

No

No

SNMP

Yes

Yes

Yes

Yes

SNMP Inform Request

Yes

Yes

Yes

Yes

Telnet

Yes

Yes

Yes

Yes

VPDN MIB Feature

Yes

Yes

Yes

Yes

Multimedia and Quality of Service  

Generic Traffic Shaping

Yes

Yes

Yes

Yes

Random Early Detection (RED)

Yes

Yes

Yes

Yes

RSVP

Yes

Yes

Yes

Yes

Other Routing  

AURP

No

Yes

No

Yes

IPX RIP

No

Yes

No

Yes

NLSP

No

Yes

No

Yes

RTMP

No

Yes

No

Yes

SMRP

No

Yes

No

Yes

SRTP

No

Yes

No

Yes

Protocol Translation  

LAT

No

Yes

No

Yes

PPP

Yes

Yes

Yes

Yes

Rlogin

Yes

Yes

Yes

Yes

Telnet

Yes

Yes

Yes

Yes

TN3270

No

Yes

No

Yes

X.25

Yes

Yes

Yes

Yes

Remote Node  

ARAP 1.0/2.0

No

Yes

No

Yes

Asynchronous Master Interfaces

Yes

Yes

Yes

Yes

ATCP

No

Yes

No

Yes

CPPP

Yes

Yes

Yes

Yes

CSLIP

Yes

Yes

Yes

Yes

DHCP

Yes

Yes

Yes

Yes

IP Pooling

Yes

Yes

Yes

Yes

IPX and ARAP on Virtual Async Interfaces

No

Yes

No

Yes

IPXCP

No

Yes

No

Yes

MacIP

No

Yes

No

Yes

NASI

No

Yes

No

Yes

NetBEUI over PPP

No

Yes

No

Yes

PPP

Yes

Yes

Yes

Yes

SLIP

Yes

Yes

Yes

Yes

Scalability  

Airline Product Set (ALPS)

No

No

No

No

Cisco IOS File System

Yes

Yes

Yes

Yes

Entity MIB

Yes

Yes

Yes

Yes

Expression MIB

Yes

Yes

Yes

Yes

OSPF Point to Multipoint

Yes

Yes

Yes

Yes

Per Port Debugging (Conditionally Triggered Debugging)

Yes

Yes

Yes

Yes

SNMP Manager

Yes

Yes

Yes

Yes

Security  

Access Lists

Yes

Yes

Yes

Yes

Access Security

Yes

Yes

Yes

Yes

Additional Vendor-Proprietary RADIUS Attributes

Yes

Yes

Yes

Yes

Authenticating ACLs

No

No

No

No

Automated Double Authentication

No

Yes

No

Yes

Certificate Authority Interoperability

No

No

No

No

Context-Based Access Control (CBAC)

No

No

No

No

Extended Access Lists

Yes

Yes

Yes

Yes

Internet Key Exchange Security Protocol

No

No

No

No

IPSec Network Security

No

No

No

No

Kerberized Login

No

Yes

No

Yes

Kerberos V Client Support

No

Yes

No

Yes

Lock and Key

Yes

Yes

Yes

Yes

Mac Security for Hubs

Yes

Yes

Yes

Yes

Md5 Routing Authentication

Yes

Yes

Yes

Yes

MS-CHAP Support

No

Yes

No

Yes

Named Method Lists for AAA Authentication & Accounting

Yes

Yes

Yes

Yes

Network Layer Encryption (40-bit or Export Controlled 56-bit DES)

No

No

No

No

RADIUS

Yes

Yes

Yes

Yes

Router Authentication

No

No

No

No

Sublock Phase 1

Yes

Yes

Yes

Yes

TACACS+

Yes

Yes

Yes

Yes

Switching  

Enhanced ATM VC Configuration and Management

No

No

Yes

Yes

Multiple ISDN Switch Types

Yes

Yes

Yes

Yes

Terminal Services  

LAT

No

Yes

No

Yes

Rlogin

Yes

Yes

Yes

Yes

Telnet

Yes

Yes

Yes

Yes

TN3270

No

Yes

No

Yes

X.25 Pad

Yes

Yes

Yes

Yes

Xremote

No

Yes

No

Yes

Voice/Multimedia  

Analog Signaling

Yes

Yes

Yes

Yes

E1 CAS Signaling4

Yes

Yes

Yes

Yes

Gain Control

Yes

Yes

Yes

Yes

Local Dialing

Yes

Yes

Yes

Yes

Multiple Ring Tones

Yes

Yes

Yes

Yes

Multiflex Trunk

Yes

Yes

Yes

Yes

Off-Net Dialing

Yes

Yes

Yes

Yes

On-Net/Off-Net Call Rerouting

Yes

Yes

Yes

Yes

Pass-Through Voice

Yes

Yes

Yes

Yes

PLAR

Yes

Yes

Yes

Yes

Remote Dialing

Yes

Yes

Yes

Yes

T1 CAS Signaling

Yes

Yes

Yes

Yes

Voice Activity Detection

Yes

Yes

Yes

Yes

Voice over ATM

No

No

Yes

Yes

Voice over Frame Relay

Yes

Yes

Yes

Yes

Voice over HDLC

Yes

Yes

Yes

Yes

Voice over IP

No

No

No

No

Wan Optimization  

Bandwidth-on-Demand

Yes

Yes

Yes

Yes

Custom and Priority Queuing5

Yes

Yes

Yes

Yes

Dial Backup

Yes

Yes

Yes

Yes

Dial-on-Demand

Yes

Yes

Yes

Yes

DRP Server Agent

Yes

Yes

Yes

Yes

Header, Link and Payload Compression

Yes

Yes

Yes

Yes

Snapshot Routing

Yes

Yes

Yes

Yes

Weighted Fair Queuing5

Yes

Yes

Yes

Yes

Wan Services  

Always On/Direct ISDN

No

No

No

No

ATM LAN Emulation: Decnet Routing and Banyan Vines Support

No

No

Yes

Yes

ATM LAN Emulation: (HSRP and SSRP)

No

No

Yes

Yes

ATM: Rate Queues for SVC per Subinterface

No

No

Yes

Yes

ATM: UNI 3.1 Signaling for ATM

No

No

Yes

Yes

Combinet Packet Protocol (CPP)

No

No

No

No

Dialer Profiles

Yes

Yes

Yes

Yes

Dialer Watch

Yes

Yes

Yes

Yes

Frame Relay Compression (FRF.9)

Yes

Yes

Yes

Yes

Frame Relay SVCs Support (DTE)

No

No

No

No

Frame Relay Traffic Shaping

Yes

Yes

Yes

Yes

Frame Relay Switching

Yes

Yes

Yes

Yes

Frame Relay UNI

Yes

Yes

Yes

Yes

Frame Relay-ATM Interworking (FRF.5)

No

No

Yes

Yes

Half Bridge/Half Router For CPP And PPP

Yes

Yes

Yes

Yes

HDLC

Yes

Yes

Yes

Yes

IPXwan 2.0

No

Yes

No

Yes

ISDN

Yes

Yes

Yes

Yes

ISDN Advise of Charge

Yes

Yes

Yes

Yes

ISDN Caller ID Callback

Yes

Yes

Yes

Yes

ISDN NFAS

Yes

Yes

Yes

Yes

Leased Line ISDN at 128 kbps

No

No

No

No

MPPC-MS PPP Compression

Yes

Yes

Yes

Yes

MS Callback

No

No

No

No

Multichassis Multilink PPP (MMP)

No

Yes

No

Yes

National ISDN Switch Type

Yes

Yes

Yes

Yes

PPP

Yes

Yes

Yes

Yes

SMDS

Yes

Yes

Yes

Yes

Stackable Home Gateway

No

No

No

No

Switched 56

Yes

Yes

Yes

Yes

Virtual Private Dialup Network (VPDN)

No

Yes

No

Yes

X.25

Yes

Yes

Yes

Yes

X.25 Enhancements

Yes

Yes

Yes

Yes

X.25 on ISDN

Yes

Yes

Yes

Yes

X.25 Switching between PVCs and SVCs

Yes

Yes

Yes

Yes

1When the older motherboard (SCB 6.06) is used with this feature, serial port 1 cannot be used. When the new motherboard (SCB 6.07) is used, serial port 1 can be used, clocked at speeds up to 192 kbps.
2Voice signaling on CES is not available.
3ATM PVCs only. SVCs are not supported.
4Includes T1 CAS protocols, plus UK Standard CAS (Mercury protocol) and CEPT standard E&M.
5Applicable to data-only interfaces.

Cisco IOS File System

To make file management easier, the Cisco MC3810 provides a complete file system for software images, message files and reports. The standard Flash memory size is 8 MB, and a 16-MB upgrade option is available. The 16-MB version can hold two code images simultaneously for fail-safe upgrades.

Network Management

Management and configuration of the Cisco MC3810 should be familiar to the Cisco IOS user and compatible with existing management systems. As such, it provides a superset of the Cisco command-line interface (CLI). The Cisco MC3810 can be managed by standard Cisco management platforms and facilities. The Cisco MC3810 can be managed by CiscoView in addition to the native remote login facilities provided by Telnet and rlogin. Three types of configuration interfaces are provided:

The HTTP-based interface allows configuration from any Web browser such as Netscape Navigator or Microsoft Explorer. The SNMP MIB allows management of the Cisco MC3810 from SNMP managers (for example, HP OpenView).

New and Changed Information

The following sections list existing IOS features and new features that are supported by the Cisco MC3810 in Cisco IOS Release  12.0  T.

Existing IOS Features Supported on the Cisco MC3810 in this Release

The following existing IOS features are now supported on the Cisco MC3810 in the 12.0(2)T release:

For more information on Bisync and Polled Async, refer to the Cisco IOS Release 12.0 Bridging and IBM Networking Configuration Guide .  For more information on PPP Over ATM, refer to the Cisco IOS Release 12.0 Wide-Area Networking Configuration Guide .

New Features in Cisco IOS Release 12.0(2)T

The following sections describe new features that are supported on the Cisco MC3810 in Cisco IOS Release 12.0(2)T.

Call Detail Records

The Call Detail Records (CDR) feature provides the ability to track records for calls being processed by the Cisco MC3810. CDR data is collected for all POTS call attempts, and the data is collected for each call leg and also by each Cisco MC3810 involved in the call session.

The call legs for which CDR data is collected are:

CDR data is stored in an internal buffer on the Cisco MC3810 at call termination time, and becomes available to be polled periodically by the Cisco network management system (NMS) applications. The CDR/call history entries cannot be retrieved after a power loss or a software reload on the Cisco  MC3810, so the Cisco NMS is considered the final destination for storing and tailoring the CDR call history table into report form.

Cisco MC3810 - IGX 8400 Interworking

For locations terminating a greater number of voice channels, the Cisco IGX provides scalability that allows a network design in which connections can be made between remote Cisco MC3810 concentrators.

Cisco MC3810 - IGX 8400 Interworking allows the Cisco IGX 8400 to be used as a larger, central site access device that can do the following:

Common Channel Signaling Features

Cisco IOS Release 12.0(2)T introduces support for three new Common Channel Signaling (CCS) features that are described in the following sections.

QSIG PRI Voice Switching

This release adds support for QSIG, which is a Private Integrated services Network Exchange (PINX) signaling protocol that provides connectivity between PINXs in a corporate environment. Using the ISDN PRI QSIG Voice Signaling feature, the Cisco MC3810 can be used as an access device to allow corporate PINX networks at remote sites to be interconnected via a data network (WAN). The Cisco  MC3810 QSIG software allows incoming voice calls from a PINX to be routed across the WAN to a destination PINX. The Cisco MC3810 is responsible for establishing the necessary connection to the peer Cisco  MC3810 across the WAN where both signaling and voice packets can be transported on behalf of the PINXs.

The Cisco MC3810 also performs intelligent functions such as call routing to other Cisco  MC3810 concentrators in the WAN (for example, tandem switching) and interworking with other types of signaling already supported on the Cisco MC3810. Transport of Supplementary Services transparent through the network is also supported.

CCS Frame Forwarding

This release adds support for CCS frame forwarding, which enables the Cisco MC3810 Digital Voice Module (DVM) to connect two CCS Private Integrated services Network Exchanges (PINXs) without having to interpret CCS signaling information for call processing. This feature provides transparent CCS frame forwarding for PBXs that use proprietary forms of CCS. CCS frame forwarding forwards CCS messages by encapsulating them in either Frame Relay or ATM.

With CCS frame forwarding, the voice connections between PBXs over the network are configured as point-to-point links.Voice Activity Detection (VAD) is used to detect when a call is in progress.

CCS Transparent Signaling

This release adds support for transparent Common Channel Signaling, which provides point-to-point PINX connection capability to Cisco MC3810 digital voice module (DVM) interfaces when the PINX does not support QSIG, or when the PINX has a proprietary solution.

Default Routes

The default routes feature can be used to reduce the number of dial peers to be configured. It is designed for situations where, for example, the ports on a Cisco MC3810 have extension numbers, but all calls not terminating on those extensions should be sent to a central Cisco MC3810, usually for forwarding to a PBX. Instead of defining all the number blocks that can be called, the default route is a dial peer that automatically matches any call not terminated by other dial peers on the Cisco  MC3810.

Facility Data Link (FDL) Capability on the Multiflex Trunk Module

This release adds support for Facility Data Link (FDL) on the Multiflex Trunk module. You can specify the FDL format to use as either the ANSI T1.403 standard, or the AT&T TR54016 standard, or both.

G.726 (ADPCM)

This newly supported vocoder provides higher reliability for digit transport in networks with greater hop counts and can be used to support lower-speed modems (up to 9.6 kbps).

Multiflex Trunk Module with integrated BRI interface

This module provides all the same functionality as the existing MultiFlex Trunk module but now provides an additional interface for BRI data backup. The BRI module provides an S/T interface only, which can be used for European deployment. An inexpensive NT1 can be used to provide connectivity to ISDN services in the United States.

Multi-length Dial Patterns

Dial strings of multiple lengths can now be supported in the same network and on the same Cisco  MC3810.

OPX Ring-through

This feature allows a port on the Cisco MC3810 to act like an "Off-Premise Extension" to the PBX. When the PBX attempts to make a connection to the remote voice port on a Cisco  MC3810, OPX Ring-through allows the PBX to reroute the call if there is no answer.

Preference-based Hunt Group

The Multi-chassis hunt group has been enhanced to allow the preference command to be used to select remote dial peers before local dial peers using the priority values. This greatly extends the capability to support on-net to off-net rerouting of calls and alternate call center applications.

Important Notes

This section contains important information about the use of your Cisco IOS Release 12.0 T software.

Serial Interface Command Change in Release 12.0(2)T

In Cisco IOS Release 11.3(1) MA, serial 2 was a valid port number. Beginning with Cisco IOS Release 12.0(1), the interface serial 2 designation on the Cisco MC3810 is no longer valid. Depending on the application, you enter different designations for this interface as follows:

Deprecated MIBs

Because the older Cisco Management Information Bases (MIBs) do not scale well across Cisco products, they will be replaced in a future release. As an initial step toward this, the OLD-CISCO-* MIBS are being deprecated now. This has no immediate impact on any existing Cisco IOS product or any network management system (NMS) application. Application developers need to be aware that the following MIBS are being discontinued and update their applications accordingly. Table 4 lists the deprecated MIBs.


Table 4: Deprecated MIBs
Deprecated MIB Replacement

OLD-CISCO-APPLETALK-MIB

RFC1243-MIB

OLD-CISCO-CHASSIS-MIB

ENTITY-MIB

OLD-CISCO-CPUK-MIB

In Development

OLD-CISCO-DECNET-MIB

NA

OLD-CISCO-ENV-MIB

CISCO-ENVMON-MIB

OLD-CISCO-FLASH-MIB

CISCO-FLASH-MIB

OLD-CISCO-INTERFACES-MIB

IF-MIB CISCO-QUEUE-MIB

OLD-CISCO-IP-MIB

NA

OLD-CISCO-MEMORY-MIB

CISCO-MEMORY-POOL-MIB

OLD-CISCO-NOVELL-MIB

NOVELL-IPX-MIB

OLD-CISCO-SYS-MIB

(Compilation of other OLD* MIBS)

OLD-CISCO-SYSTEM-MIB

CISCO-CONFIG-COPY-MIB

OLD-CISCO-TCP-MIB

CISCO-TCP-MIB

OLD-CISCO-TS-MIB

NA

OLD-CISCO-VINES-MIB

CISCO-VINES-MIB

OLD-CISCO-XNS-MIB

NA

Using the Cisco MC3810 with the PSTN

This section describes important notes regarding use of the Cisco MC3810 with the Public Switched Telephone Network (PSTN).

Connections to a PSTN

Care should be exercised when connecting switched voice ports on the Cisco MC3810 directly to the PSTN because improper configurations can expose the corporate network to telephone fraud.

Switched Access from the PSTN

The Cisco MC3810 has the capability to connect a user from the PSTN directly to the corporate wide-area telephone network. As a phone switch, the Cisco MC3810 can be configured to switch the user to any location in that network, even remote locations that are connected again to another PSTN. However, the Cisco MC3810 does not provide any mechanism to restrict users from calling after they are connected. Without proper network design, this condition could result in the unauthorized use of the corporate network for making calls at the corporation's expense. To prevent this from occurring, Cisco does not recommend connecting a switched voice interface on the Cisco  MC3810 directly to the PSTN. Instead, it should be connected to a PBX that implements a security scheme that prevents unauthorized use.

Non-Switched Calls

The same opportunity for illicit use does not exist for non-switched call types such as pass-through connections (although the possibility for fraud does exist at the direct contact point). Pass-through calls create a path to only a single location specified by the network administrator. For example, a pass-through connection might be used to pass a trunk from a PBX to the PSTN. In this case, the trunk on the PBX will always pass straight through the Cisco MC3810 to the PSTN. As a result, the necessary security is provided by the PBX.

Caveats

This section contains the open and resolved caveats for the current Cisco IOS maintenance release only. For a list of software caveats that apply to previous maintenance releases (for example, Release 12.0(1)T), refer to the Caveats for Cisco IOS Release 12.0 T  document that accompanies these release notes.The caveats document is also located on CCO and the Documentation CD-ROM.

Caveats in Cisco IOS Release 12.0 also apply to Release 12.0 T. For information on caveats in Cisco IOS Release 12.0, refer to the "Caveats"  section in the cross-platform Release Notes for Cisco IOS Release 12.0  document located on CCO and the Documentation CD-ROM.


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: Tools: Bug Toolkit II.

Open Caveats---12.0(2)T

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

Basic System Services

The [no] atm rmon collect group-num command does not properly take effect when invoked. The ATM-RMON feature (available only on the LS-1010 platform) is fully functional, except when you assign ATM interfaces to ATM-RMON collection groups. In this situation, you must set the associated MIB objects with SNMP. See the portSelTable definitions in the ATM-RMON-MIB.my MIB document for more information. There is no workaround.

IP Routing Protocols

When you use sparse-mode PIM multicast, the multicast tree may take a few minutes to stabilize after the routers are booted. During this period, "PATH" messages sent to multicast addresses are not delivered, and RSVP path and reservation sessions are not established. This is a transient phenomenon that occurs only when the routers are being booted. Once the multicast tree stabilizes, paths and reservations are established quickly. This problem does not occur in unicast or dense-mode multicast networks.
Workaround: Use sparse-dense or dense mode PIM multicast, if possible.

Miscellaneous

The Token Ring Inter-Switch Link (TR-ISL) feature is currently not supported on either the Cisco  3620  router or the Cisco  3640  router. There is no workaround.
If flow-acceleration is enabled, then disabled, and encryption is subsequently enabled, the router may unexpectedly reload.
Workaround: Avoid enabling and then disabling flow-acceleration.
The IP portion of an incoming call might not terminate correctly if the caller closes the connection. This situation is the result of rare timing conditions. There is no workaround.
A Cisco  1600  router or Cisco  3600  series  router will reload when IPSEC is configured over the ISDN link. This condition is caused by the IP route-cache that is enabled by default on all interfaces.
Workaround: turn off fast switching with the no ip route-cache command on the ISDN interfaces.
Description: Cisco  800  series  routers configured for multilink and STAC compression experience a page leak after prolonged usage. This condition is rare (roughly 1 in 50 units experience it) and may take several days to manifest, depending on the number of calls.
Symptoms: Performance degrades until the unit thrashes; that is, the router runs so slowly that no useful work is accomplished. This is accompanied by continuous and heavy blinking of the OK LED.
Workaround: Disable multilink or disable STAC compression. A soft or hard reset (for example, reload command or power cycle) is the only way to clear the problem once it occurs.

Novell IPX, XNS, and Apollo Domain

IPX allows the primary interface and multiple ISL subinterfaces to have the same IPX network number and encapsulation.
Workaround: Do not configure interfaces with the same IPX network number.

Wide-Area Networking

A Cisco router might fail to reply to an Address Resolution Protocol (ARP) incoming on the Bridged Virtual Interface (BVI) when the ARP table is clean. The following error message appears if "debug arp" is turned on: "00:50:23: IP ARP req filtered src 10.1.1.254 0000.0c32.ed77, dst 10.1.1.1 0000.0000.0000 wrong cable, interface Virtual-Access."
Workaround: To install the ARP entries, initiate traffic from the router and force an incoming ARP BVI reply.
Removing a dialer interface while a call is up can result in the loss of use of one B channel.
Workaround: A reload of the router will bring the B channel back.

Resolved Caveats---Release 12.0(2)T

All the caveats listed in this section are resolved in Release 12.0(2)T. This section describes only severity 1 and 2 caveats.

IP Routing Protocols

On some platforms, for example the Cisco  7200  series  routers, RIP does not get enabled on Token Ring interfaces. The output of the sh ip proto command will indicate "Reset all is OK."
Workaround: Configure router rip on the router before configuring the address on the interface. A shut command followed by a no shut command might also bring up RIP on the interface.

Miscellaneous

RADIUS accounting does not work if you have separate authentication and accounting servers.
An IP client might not be able to ping the Route Switch Module (RSM). This situation might occur during Token Ring virtual LAN (TR VLAN) configuration on the RSM. It is most common when the IP client sends an Address Resolution Protocol (ARP) without a routing information field (RIF), and then sends an ARP with a RIF. The situation might also occur if the concentrator relay function (CRF) to which the client is connected is configured for source-route bridging (SRB).
Workaround: Change the CRF mode from SRB to source-route transparent (SRT) bridging.

Novell IPX, XNS, and Apollo Domain

The Internetwork Packet Exchange (IPX) input process might run out of stack, causing a system reload or reduced performance. There is no workaround.

Related Documentation

The following sections describe the documentation available for the Cisco  MC3810 multiservice access concentrator. Typically, these documents consist of hardware installation guides, software installation guides, Cisco IOS configuration and command references, system error messages, and feature modules. Feature modules are updates to the Cisco IOS documentation. Documentation is available as printed manuals or electronic documents. Feature modules 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. For more information on the CD-ROM, refer to the "Documentation CD-ROM" section.

These release notes should be used in conjunction with the documents listed in the following sections:

Release-Specific Documents

The following documents are specific to Release 12.0 T. They are located on CCO and the Documentation CD-ROM:

To access the cross-platform Release Notes for Cisco IOS Release 12.0 T on CCO, follow this path:
Software and Support: Cisco Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cross-Platform Release Notes for Cisco IOS Release  12.0  T
To access the cross-platform Release Notes for Cisco IOS Release 12.0 on the Documentation CD-ROM, follow this path:
Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cross-Platform Release Notes for Cisco IOS Release 12.0 T
To access these documents, refer to the Software Center at this path on CCO:
Software & Support: Software Center: Cisco IOS Software
As a supplement to the caveats listed in the "Caveats" section in these release notes, see the Caveats for Cisco IOS Release 12.0 T  document, which contains caveats applicable to all platforms for all maintenance releases of Release  12.0  T.
To access the caveat document on CCO, follow this path:
Products and Ordering: Cisco Documentation: Cisco IOS Software Configuration: Cisco  IOS Release 12.0: Caveats: Caveats for Cisco IOS Release 12.0 T
To access the caveat document on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS 12.0: Caveats: Caveats for Cisco IOS Release 12.0 T

Platform-Specific Documents

The documents listed in this section are available for the Cisco MC3810. These documents are also available on CCO and the Documentation CD-ROM.

To access Cisco MC3810 documents on CCO, follow this path:

Products and Ordering: Cisco Documentation: Access Servers and Access Routers: Multiservice Access Concentrators

To access platform documents on the Documentation CD-ROM, follow this path:

Cisco Product Documentation: Access Servers and Access Routers: Multiservice Access Concentrators

Feature Modules

Feature modules describe new features supported by Release 12.0 T and are an update to the Cisco  IOS documentation set. They consist of a brief overview of the feature, benefits, configuration tasks, and a command reference. As updates, the features modules are available online only. The feature module information is included in the next printing of the Cisco IOS documentation set.

To access the feature modules on CCO, follow this path:

Products and Ordering: Cisco Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation: New Features in Release 12.0 T

To access the feature modules on the Documentation CD-ROM, follow this path:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation: New Features in Release 12.0 T

Cisco IOS Software Documents

The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco  IOS command references, and several other supporting documents. These documents are shipped with your order in electronic form on the Documentation CD-ROM, unless you specifically ordered the printed versions.

Documentation Modules

Each module in the Cisco IOS documentation set 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.

On CCO and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set: configuration guides and command references.

To access these documents on CCO, follow this path:

Products and Ordering: Cisco Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References:  Cisco IOS Interface Configuration Guide  or Cisco IOS Interface Command Reference

To access these documents on the Documentation CD-ROM, follow this path:

Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References: Cisco IOS Interface Configuration Guide or Cisco IOS Interface Command Reference

Release 12.0 Documentation Set

Table 5 details the contents of the Cisco IOS Release 12.0 software documentation set. The document set is available in electronic form, and also in printed form upon request.


Note The most current Cisco IOS documentation can be found on the latest Documentation CD-ROM and on the Web. These electronic documents might contain updates and modifications made after the paper documents were printed.

To access the Cisco IOS documentation set on CCO, follow this path:

Products and Ordering: Cisco Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References

To access the Cisco IOS documentation set on the Documentation CD-ROM, follow this path:

Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References

.

Table 5: Cisco IOS Software Documentation Set for Release 12.0
Books Chapter Topics

  • Configuration Fundamentals Configuration Guide

  • Configuration Fundamentals Command Reference

Configuration Fundamentals Overview
Cisco IOS User Interfaces
File Management
Interface Configuration
System Management

  • 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
Cisco Database Connection
NCIA Client/Server Topologies
IBM Channel Attach

  • 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 Interface Configuration Guide

  • Cisco IOS Interface Command Reference

About the Cisco IOS Software Documentation
Using Cisco IOS Software
Interface Configuration Overview
Configuring LAN Interfaces
Configuring Serial Interfaces
Configuring Logical Interfaces

  • 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

  • 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

  • Cisco IOS Switching Services Configuration Guide

  • Cisco IOS Switching Services Command Reference

Switching Paths for IP Networks
Virtual LAN (VLAN) Switching and Routing

  • Wide-Area Networking Configuration Guide

  • Wide-Area Networking Command Reference

ATM
Frame Relay
SMDS
X.25 and LAPB

  • Voice, Video, and Home Applications Configuration Guide

  • Voice, Video, and Home Applications Command Reference

About the Cisco IOS Documentation
About Voice, Video, and Home Applications
Voice
Video
Broadband
Using Cisco IOS Software

  • Cisco IOS Software Command Summary

  • Dial Solutions Quick Configuration Guide

  • System Error Messages

  • Debug Command Reference

 

  • Configuration Fundamentals Configuration Guide

  • Configuration Fundamentals Command Reference

Configuration Fundamentals Overview
Cisco IOS User Interfaces
File Management
Interface Configuration
System Management

  • 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

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

For helpful tips on configuring Cisco products, follow this path on CCO:

Software & Support: Technical Tips  (button on left margin)

Hot Tips are popular tips and hints gathered from Cisco's Technical Assistance Center (TAC). Most of these documents are also available from the TAC's Fax-on-Demand service. To access Fax-on-Demand and receive documents at your fax machine, call 888-50-CISCO (888-502-4726). From international areas, call 415-596-4408.

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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