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Release Notes for Cisco 800 Series for Cisco IOS Release 12.0 T

Release Notes for Cisco 800 Series for Cisco IOS Release 12.0 T

December 13, 1999

These release notes for Cisco 800 series support Cisco IOS Release 12.0 T, up to and including Release 12.0(7)T. These release notes are updated as needed to describe new features, memory requirements, hardware support, software platform deferrals, and changes to the microcode or modem code and related documents.

For a list of the software caveats that apply to Release 12.0(7)T, see the Caveats for Cisco I OS Release 12.0 T document that accompanies these release notes. The caveats document is updated for every maintenance release and is located on Cisco Connection Online (CCO) and the Documentation CD-ROM.

Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.0 on CCO and the Documentation CD-ROM.


Note   Cisco IOS Release 12.0(5)T and earlier support the Cisco 801-804 only. The Cisco 805 router was introduced in the latest release, Release 12.0(7)T.

Contents

These release notes describe the following topics:

System Requirements

This section describes the system requirements for Release 12.0 T:

Memory Requirements


Table 1: Memory Requirements for the Cisco 800 Series
Platforms Image Name Software Image Required Flash Memory Required DRAM Memory Runs From

Cisco 801-804 Routers

IP

c800-y6-mw

8 MB

4 MB

RAM

IP Plus

c800-sy6-mw

8 MB

4 MB

RAM

IP/IPX Plus

c800-nsy6-mw

8 MB

4 MB

RAM

IP/Firewall

c800-oy6-mw

8 MB

4 MB

RAM

IP/Firewall Plus

c800-osy6-mw

8 MB

4 MB

RAM

IP/FW/Plus/IPSEC56

c800-osy656i-mw

8 MB

8 MB

RAM

IP/IPX/FW/IPSEC56/Plus

c800-nosy656i-mw

8 MB

8 MB

RAM

Cisco 805 Router

IP

c805-y6-mw

4 MB

8 MB

RAM

IP Plus

c805-sy6-mw

4 MB

8 MB

RAM

IP/IPX Plus

c805-nsy6-mw

4 MB

8 MB

RAM

IP/Firewall

c805-oy6-mw

4 MB

8 MB

RAM

IP/Firewall Plus

c805-osy6-mw

4 MB

4 MB

RAM

IP/FW/Plus/IPSEC56

c805-osy656i-mw

8 MB

8 MB

RAM

IP/IPX/FW/IPSEC56/Plus

c805-nosy656i-mw

8 MB

8 MB

RAM

Hardware Supported

Cisco IOS Release 12.0 T supports the Cisco 800 series:


Note   Cisco IOS Release 12.0(5)T and earlier support the Cisco 801-804 only. The Cisco 805 router was introduced in the latest release, Release 12.0(7)T.

For detailed descriptions of the new hardware features, see the "New and Changed Information" section.


Table 2: Supported Interfaces for the Cisco 800 Series
Router Ethernet Ports ISDN Ports Serial Ports Telephone Ports Console Ports

Cisco 801

One 10BaseT (RJ-45)

ISDN BRI S/T (RJ-45)

-

-

RJ-45

Cisco 802

One 10BaseT (RJ-45)

ISDN BRI U, integrated Network Termination 1 (NT-1) (RJ-45)

-

-

RJ-45

Cisco 803

Four-port 10BaseT (RJ-45) hub

ISDN BRI S/T (RJ-45)

-

Two (RJ-11)

RJ-45

Cisco 804

Four-port 10BaseT (RJ-45) hub

ISDN BRI U, integrated NT-1 (RJ-45)

-

Two (RJ-11)

RJ-45

Cisco 805

One 10BaseT (RJ-45)

-

One smart serial (RS-232, RS-449, RS-530, RS-530A,X.21 and V.35)

-

RJ-45

Cisco 801-804 Routers

The Cisco 801-804 routers provide the following key hardware features:


Note   To add additional Flash memory to the Cisco 801-804, you will remove the existing Flash card and install a the new one.

Cisco 805 Router

The Cisco 805 router connects small professional offices over serial lines to corporate networks and to the Internet, and provides the following key features:

Determining the Software Version

To determine the version of Cisco IOS software running on your Cisco 800 series, log in to the router and enter the show version EXEC command:

router> show version
Cisco Internetwork Operating System Software 
IOS (tm) 800 Software (C800-Y6-MW), Version 12.0(7)T, RELEASE SOFTWARE
 

Upgrading to a New Software Release

For information on upgrading to a new software release, see the product bulletin Cisco IOS Software Release  12.0 T Upgrade Paths and Packaging Simplification (#819: 1/99)   on CCO at:

Technical Documents: Product Bulletins: Software

Under Cisco IOS 12.0, click Cisco IOS Software Release 12.0 T Upgrade (#819: 1/99).

Feature Set Tables

The Cisco IOS software is packaged in feature sets consisting of software images--depending on the platform. Each feature set contains a specific set of Cisco IOS features.

Release 12.0 T supports the same feature sets as Release 12.0, but Release 12.0 T can include new features supported by the Cisco 800 series.


Table 3: Feature Sets Supported by the Cisco 800 Series 
Image Names Feature Set Matrix Term Software Image Platforms In1

IP

Basic2

c800-y6-mw

Cisco 801-804

c805-y6-mw

Cisco 805

(7)

IP Plus

Plus3

c800-sy6-mw

Cisco 801-804

c805-sy6-mw

Cisco 805

(7)

IP/IPX Plus

Plus

c800-nsy6-mw

Cisco 801-804

c805-nsy6-mw

Cisco 805

(7)

IP/Firewall

Basic

c800-oy6-mw

Cisco 801-804

c805-oy6-mw

Cisco 805

(7)

IP/Firewall Plus

Plus

c800-osy6-mz

Cisco 801-804

(5)

c805-osy6-mz

Cisco 805

(7)

IP/FW/Plus/IPSEC56

Plus, IPSec 564

c800-osy656i-mw

Cisco 801-804

(5)

c805-osy656i-mw

Cisco 805

(7)

IP/IPX/FW/IPSEC56/Plus

Plus, IPSec 56

c800-nosy656i-mw

Cisco 801-804

(5)

c805-nosy656i-mw

Cisco 805

(7)

1The number in the "In" column indicates the Cisco IOS release when the image was first introduced. For example, (4) means an image was introduced in Release 12.0(4)T. If a cell in this column is empty, the interface was included in the initial base release.
2This feature set is offered in the basic feature set.
3This feature set is offered in the Plus feature set.
4This feature set is offered in the encryption feature sets, which consist of IPSec 56-bit (Plus IPSec 56) data encryption feature sets.


Caution Cisco IOS images with strong encryption (including, but not limited to 168-bit (3DES) data encryption feature sets) are subject to United States government export controls and have limited distribution. Strong encryption images to be installed outside the United States may require an export license. Customer orders may be denied or subject to delay due to United States government regulations. When applicable, the purchaser or the user must obtain local import and use authorizations for all encryption strengths. Contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com.

Table 4 and Table 5 list the features and feature sets supported by the Cisco 801-804 routers in Cisco IOS Release 12.0 T, and Table 6 lists the features and feature sets supported by the Cisco 805 router. All three tables use the following conventions:


Note   These feature set tables only contain a selected list of features. These tables are not cumulative-- nor do they list all the features in each image.


Table 4: Feature List by Feature Set for the Cisco 801-804 Routers
Feature Set
Features In IP IP Plus IP/IPX Plus IP/FW IP/FW Plus IP/FW/Plus/
IPSEC56 (VPN)
IP/IPX/FW/
IPSEC56/
Plus
Address Conservation

PAT (NAT Overload)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

NAT

Yes

Yes

Yes

Yes

Yes

Yes

Yes

NAT with H.323

No

No

No

No

No

No

No

Advanced Telephone Features1

Call Forward (Sweden and Finland only)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Call Forward Variable (North America only)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Call Hold Retrieve (North America only)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Call Transfer (North America only)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Call Waiting

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Caller ID Number delivery to POTS ports (North America only)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Caller ID Name delivery to POTS ports (North America only)

No

No

No

No

No

No

No

Data-Over-Voice Bearer (North America only)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Distinctive Ringing

Yes

Yes

Yes

Yes

Yes

Yes

Yes

ISDN-Voice Priority

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Basic Services

GRE Tunneling

No

Yes

Yes

No

Yes

Yes

Yes

NAT

Yes

Yes

Yes

Yes

Yes

Yes

Yes

PAP, CHAP, MSCHAP, Local Password

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Ease of Use and Deployment

Auto SPID / Switch Detection

(3)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Cisco ConfigMaker

Yes

Yes

Yes2.

Yes

Yes

Yes

Yes

Cisco FastStep

Yes

Yes

Yes2

Yes

Yes

Yes

Yes

Easy IP Phase I and II (IPCP Address Negotiation and DHCP Server)

(3)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

TFTP Client and Server

Yes

Yes

Yes

Yes

Yes

Yes

Yes

LAN

AppleTalk

No

No

No

No

No

No

No

IP

Yes

Yes

Yes

Yes

Yes

Yes

Yes

IPX

No

No

Yes

No

No

No

Yes

NetBIOS Access Lists

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Transparent Bridging

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Management

Cisco View

Yes

Yes

Yes

Yes

Yes

Yes

Yes

SNMP, Telnet, Console Port

Yes

Yes

Yes

Yes

Yes

Yes

Yes

SNTP

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Syslog

No

Yes

Yes

No

Yes

Yes

Yes

Routing

BGP

No

No

No

No

No

No

No

EGP

No

No

No

No

No

No

No

IGRP

No

No

No

No

No

No

No

IP Enhanced IGRP (IP-EIGRP)

No

Yes

Yes

No

Yes

Yes

Yes

IPX Enhanced IGRP (IPX-EIGRP)

No

No

No

No

No

No

No

IP Multicast (relay only)

No

Yes

Yes

No

Yes

Yes

Yes

IP-Policy Routing

No

Yes

Yes

No

Yes

Yes

Yes

IPXWAN

No

No

Yes

No

No

No

Yes

OSPF

No

No

No

No

No

No

No

RIP, RIPv2, Triggered RIP

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Security

AAA Radius

No

No

No

No

No

No

No

AAA TACACS+

No

Yes

Yes

No

Yes

Yes

Yes

Additional Vendor-Proprietary RADIUS Attributes

No

No

No

No

No

No

No

Authenticating ACL

No

No

No

No

No

No

No

Automated Double Authentication (server functionality)

No

No

No

No

No

No

No

Certificate Authority Interoperability3

No

No

No

No

No

Yes

Yes

Internet Key Exchange Security Protocol

No

No

No

No

No

Yes

Yes

IPSec Network Security

(5)

No

No

No

No

No

Yes

Yes

IOS Firewall Phase I

    • Context Based Access Control Lists

No

No

No

Yes

Yes

Yes

Yes

    • Java Blocking

No

No

No

Yes

Yes

Yes

Yes

    • Denial of Service Detection and Prevention

No

No

No

Yes

Yes

Yes

Yes

    • Real-time Alerts and Audit Trails

No

No

No

Yes

Yes

Yes

Yes

IPSec Encryption with 56 bit DES

No

No

No

No

No

Yes

Yes

Lock and Key

Yes

Yes

Yes

Yes

Yes

Yes

Yes

LT2P

No

No

No

No

No

Yes

Yes

Named Method Lists for AAA Authentication & Accounting

No

No

No

No

No

No

No

Route and Router Authentication

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Token Card - Double Authentication

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Voice Technologies

Called Party Number Port

(5)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

WAN

Frame Relay Encapsulation (for ISDN LL)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

ISDN Digital Subscriber Line (IDSL, up to 144 kbps)
(Cisco 802 & Cisco 804 only)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

ISDN Digital Subscriber Line (IDSL)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Frame Relay Inverse ARP

No

No

No

No

No

No

No

ISDN

Yes

Yes

Yes

Yes

Yes

Yes

Yes

ISDN Leased Line (up to 144 kbps)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

ML-PPP, PPP Compression

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Mobile IP

No

No

No

No

No

No

No

PPP over Frame Relay (RFC 1973)

No

No

No

No

No

No

No

WAN Optimization

Always On/Dynamic ISDN (AO/DI)

No

Yes

Yes

No

Yes

Yes

Yes

Bandwidth on Demand (BOD)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Dial on Demand (DDR)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

HSRP

No

No

No

No

No

No

No

IPX and SPX Spoofing

No

No

Yes

No

No

No

Yes

ISDN Caller ID Callback

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Snapshot Routing

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Stac Compression

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Time-based Access Lists

(3)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

X.25 ID

No

Yes

Yes

No

Yes

Yes

Yes

1Advanced Telephone Features are available on the Cisco 803 and 804 routers only. These features require supplementary services from a telephone company.
2The X.25 configuration feature requires the use of the Cisco command line interface (CLI).
3
Interoperability with Certification Authority servers from VeriSign is not supported for IPSec in Release 12.0(5)T and earlier releases on Cisco 800 series routers.

The Cisco 800 series routers also support the features listed in Table 5.
Table 5: Additional Features supported by Cisco 800 Routers
Feature IP IP Plus IP/IPX Plus IP/FW IP/FW Plus IP/FW/Plus/
IPSec
IP/FW/Plus/
IPSec Plus

Routed Protocol

IP

IP

IP/IPX

IP

IP

IP

IP/IPX

Routing Protocol

RIP

Snapshot

RIP/IP-
EIGRP

Snapshot

RIP/IP-
EIGRP/IPX
WAN

Snapshot

RIP/IP-
EIGRP

Snapshot

RIP/IP-
EIGRP

Snapshot

RIP/IP-
EIGRP

Snapshot

RIP/IP-
EIGRP/IPX
WAN

Snapshot

Tunneling

GRE

GRE

GRE

GRE

GRE

X.25

X.25

X.25

X.25

X.25

X.25

SNTP (Simple Network Time Protocol)

SNTP

SNTP

SNTP

SNTP

SNTP

SNTP

SNTP

Multicast

IP Multicast Forwarding

IP Multicast Forwarding

IP Multicast Forwarding

IP Multicast Forwarding

IP Multicast Forwarding

Management

SNMP

SNMP/
SYSLOG

SNMP/
SYSLOG

SNMP

SNMP/
SYSLOG

SNMP/
SYSLOG

SNMP/
SYSLOG

Manual ISDN Calls (see reference for commands)

Yes

Yes

Yes

Yes

Yes

Yes

Yes


Table 6: Feature List by Feature Set for the Cisco 805 Router
Feature Set
Features IP IP Plus IP/IPX Plus IP/FW IP/FW Plus IP/FW/Plus/
IPSEC56 (VPN)
IP/IPX/FW/
IPSEC56/
Plus
Address Conservation

PAT (NAT Overload)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

NAT

Yes

Yes

Yes

Yes

Yes

Yes

Yes

NAT with H.323

No

No

No

No

No

No

No

Basic Services

GRE Tunneling

No

Yes

Yes

No

Yes

Yes

Yes

NAT

Yes

Yes

Yes

Yes

Yes

Yes

Yes

PAP, CHAP, MSCHAP, Local Password

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Ease of Use and Deployment

Cisco ConfigMaker

Yes

Yes

Yes2.

Yes

Yes

Yes

Yes

Cisco FastStep

Yes

Yes

Yes1

Yes

Yes

Yes

Yes

Easy IP Phase I and II (IPCP Address Negotiation and DHCP Server)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

TFTP Client and Server

Yes

Yes

Yes

Yes

Yes

Yes

Yes

LAN

AppleTalk

No

No

No

No

No

No

No

IP

Yes

Yes

Yes

Yes

Yes

Yes

Yes

IPX

No

No

Yes

No

No

No

Yes

NetBIOS Access Lists

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Transparent Bridging

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Management

Cisco View

Yes

Yes

Yes

Yes

Yes

Yes

Yes

SNMP, Telnet, Console Port

Yes

Yes

Yes

Yes

Yes

Yes

Yes

SNTP

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Syslog

No

Yes

Yes

No

Yes

Yes

Yes

Routing

BGP

No

No

No

No

No

No

No

EGP

No

No

No

No

No

No

No

IGRP

No

No

No

No

No

No

No

IP Enhanced IGRP (IP-EIGRP)

No

Yes

Yes

No

Yes

Yes

Yes

IPX Enhanced IGRP (IPX-EIGRP)

No

No

No

No

No

No

No

IP Multicast (relay only)

No

Yes

Yes

No

Yes

Yes

Yes

IP-Policy Routing

No

Yes

Yes

No

Yes

Yes

Yes

IPXWAN

No

No

Yes

No

No

No

Yes

OSPF

No

No

No

No

No

No

No

RIP, RIPv2, Triggered RIP

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Security

AAA Radius

No

No

No

No

No

No

No

AAA TACACS+

No

Yes

Yes

No

Yes

Yes

Yes

Additional Vendor-Proprietary RADIUS Attributes

No

No

No

No

No

No

No

Authenticating ACL

No

No

No

No

No

No

No

Automated Double Authentication (server functionality)

No

No

No

No

No

No

No

Certificate Authority Interoperability

No

No

No

No

No

Yes

Yes

Internet Key Exchange Security Protocol

No

No

No

No

No

Yes

Yes

IPSec Network Security

No

No

No

No

No

Yes

Yes

IOS Firewall Phase I

    • Context Based Access Control Lists

No

No

No

Yes

Yes

Yes

Yes

    • Java Blocking

No

No

No

Yes

Yes

Yes

Yes

    • Denial of Service Detection and Prevention

No

No

No

Yes

Yes

Yes

Yes

    • Real-time Alerts and Audit Trails

No

No

No

Yes

Yes

Yes

Yes

IPSec Encryption with 56 bit DES

No

No

No

No

No

Yes

Yes

Lock and Key

Yes

Yes

Yes

Yes

Yes

Yes

Yes

LT2P

No

No

No

No

No

Yes

Yes

Named Method Lists for AAA Authentication & Accounting

No

No

No

No

No

No

No

Route and Router Authentication

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Token Card - Double Authentication

Yes

Yes

Yes

Yes

Yes

Yes

Yes

WAN

Frame Relay Encapsulation (for ISDN LL)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Frame Relay Inverse ARP

Yes

Yes

Yes

Yes

Yes

Yes

Yes

ML-PPP, PPP Compression

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Mobile IP

No

No

No

No

No

No

No

PPP over Frame Relay (RFC 1973)

No

No

No

No

No

No

No

WAN Optimization

Bandwidth on Demand (BOD)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Dial on Demand (DDR)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

HSRP

No

No

No

No

No

No

No

IPX and SPX Spoofing

No

No

Yes

No

No

No

Yes

Snapshot Routing

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Stac Compression

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Time-based Access Lists

Yes

Yes

Yes

Yes

Yes

Yes

Yes

X.25 ID

No

Yes

Yes

No

Yes

Yes

Yes

1The X.25 configuration feature requires the use of the Cisco command line interface (CLI).

New and Changed Information

The following sections list the new hardware and software features supported by the Cisco 800 series for Release 12.0 T:

New Hardware Features in Release 12.0(7)T

The following new hardware feature is supported by the Cisco 800 series for Release 12.0(7)T and later releases:

Cisco 805 Router

Cisco IOS Release 12.0(7)T includes support for the Cisco 805 router, which offers flexibility to small offices requiring secure and manageable Internet, intranet, and corporate LAN access. The Cisco 805 router has a fixed hardware configuration with one 10BaseT Ethernet port and one serial port. The serial port can connect X.21, V.35, RS-232, RS-449, RS-530 and RS-530A DTE and DCE.

New Software Features in Release 12.0(7)T

The following new software enhancements are supported by the Cisco 800 series for Release 12.0(7)T and later releases:

TACACS+ on Cisco 800 Series Routers

Cisco 800 series routers now support the Terminal Access Controller Access Control System Plus (TACACS+) protocol through Telnet. TACACS+ is a Cisco proprietary authentication protocol that provides remote access authentication and related network security services, such as event logging. User passwords are administered in a central database rather than in individual routers.

The TACACS+ security application provides the centralized validation of users attempting to gain access to a router or network access server. TACACS+ services are maintained in a database on a TACACS+ daemon that typically runs on a UNIX or Windows NT workstation. The goal of TACACS+ is to provide a methodology for managing multiple network access points from a single management service. You must have access to and must configure a TACACS+ server before the configured TACACS+ features on your network access server are available.

The TACACS+ feature is supported by the authentication, authorization, and accounting (AAA) facility, which is configured at individual routers. However, Cisco 800 series routers do not support the RADIUS or Kerberos protocols. The TACACS+ AAA services are defined as follows:

Authentication--Provides complete control of authentication through login and password dialog, challenge and response, messaging support. The authentication facility provides the ability to conduct an arbitrary dialog with the user (for example, after a login and password are provided, to challenge a user with a number of questions, like home address, mother's maiden name, service type, and social security number. In addition, the TACACS+ authentication service supports sending messages to user screens. For example, a message could notify users that their passwords must be changed because of a company password aging policy.

Authorization--Provides fine-grained control over user capabilities for the duration of the a user session, including but not limited to setting autocommands, access control, session duration, or protocol support. You can also enforce restrictions on what commands a user can execute with the TACACS+ authorization feature.

Accounting--Collects and sends information used for billing, auditing, and reporting to the TACACS+ daemon. Network managers can use the accounting facility to track user activity for a security audit or to provide information for user billing. Accounting records include user identities, start and stop times, executed commands (such as PPP), number of packets, and number of bytes.

For additional information, see and the Cisco 800 Series Routers Software Configuration Guide, Cisco 805 Router Software Configuration Guide, and the security-related configuration guides and command references located on CCO and the Documentation CD-ROM:

New Software Features in Release 12.0(5)T

The following new software enhancements are supported by the Cisco 800 series in Release 12.0(5)T and later releases.

Cisco IOS Firewall Feature Set for the Cisco 800 Series

Cisco IOS Firewall Feature Set is not new to Release 12.0(5)T; however, the Cisco IOS Firewall Feature Set combined with IPSEC is new to this release.

Enhancements to the Cisco IOS Firewall feature set are now available on the Cisco 800 series routers. This feature set is available on the IP Firewall, IP Firewall Plus, IP Firewall Plus IPSec, and IP/IPX Firewall Plus IPSec images only. This feature set provides the following additional capabilities:

The Cisco IOS Firewall Feature Set feature module provides several sample firewall configurations, including the following examples for small-office environments:

If you want to configure a firewall in an IP-network-to-Internet network, you can use the Cisco 800 Fast Step application (recommended for inexperienced network administrators) or the Cisco IOS software command-line interface (CLI) (recommended for more experienced network administrators). You can also configure a firewall by using Cisco ConfigMaker software version 2.3.

With the Cisco 800 Fast Step application, you can configure CBAC only. For information on how to use the Cisco 800 Fast Step application, refer to the application online help.

If you want to configure a firewall in a remote-office-to-corporate-office network, you must use the Cisco IOS CLI. For information on how to configure a firewall using the CLI, refer to the following online documents:

IPSec Network Security

The IPSec network security feature is now available on the Cisco 800 series routers (IP/Firewall/Plus/IPSec56 and IP/IPX/Firewall/IPSec56/Plus images only). This feature supports the 56-bit Data Encryption Standard (DES); it does not support the triple DES. Enabling this feature can impact your router performance.

IPSec is a framework of open standards that provides data confidentiality, data integrity, and data authentication between participating peers, such as two routers. IPSec provides these security services on IP datagrams.

For information on configuring this feature, refer to the Cisco IOS Release 12.0 Security Configuration Guide.

Called Party Number Port

Some switches do not include a called party number when they send a voice call to a Cisco 800 router. These calls are directed to port 1 by default. The feature Called Party Number Port allows the router to direct calls of this type to a specified port. When this feature is combined with the command forward-to-unused-port, the router can direct a second call to the same port as the first call or to another port.

Layer Two Tunneling Protocol (L2TP)

Layer Two Tunneling Protocol (L2TP) is an emerging Internet Engineering Task Force (IETF) standard that combines the best features of two existing tunneling protocols: Cisco's Layer Two Forwarding (L2F) and Microsoft's Point-to-Point Tunneling Protocol (PPTP). L2TP is an extension to the Point-to-Point Protocol (PPP), which is an important component for Access Virtual Private Networks (VPNs). Access VPNs allow mobile users to connect to their corporate intranets or extranets, thus improving flexibility and reducing costs.

Traditional dial-up networking services only supported registered IP address, which limited the types of applications that could be implemented over Virtual Private Networks (VPNs). L2TP supports multiple protocols and unregistered and privately administered IP addresses over the Internet. This allows the existing access infrastructure, such as the Internet, modems, access servers, and ISDN terminal adaptors (TAs), to be used.

L2TP can be initiated wherever PPTP or L2F is currently deployed and can be operated as a client initiated tunnel, such as PPTP, or a network access server (NAS) initiated tunnel, such as L2F.

New Software Features in Release 12.0(4)T

The following new software enhancements are supported by the Cisco 800 series in Release 12.0(4)T1 and later releases.

Cisco IOS Firewall Feature Set for the Cisco 800 Series

The Cisco IOS Firewall feature set is now available on the Cisco 800 series routers. This feature set is available on the IP/Firewall image only; the product code for this image is S8CH-12.0(4)T. This feature set provides the following capabilities:

The Cisco IOS Firewall Feature Set feature module provides several sample firewall configurations, including the following examples for small-office environments:

If you want to configure a firewall in an IP-network-to-Internet network, you can use the Cisco 800 Fast Step application (recommended for inexperienced network administrators) or the Cisco IOS software command-line interface (CLI) (recommended for more experienced network administrators). You can also configure a firewall by using Cisco ConfigMaker software version 2.3.

With the Cisco 800 Fast Step application, you can configure CBAC only. If you want to configure a firewall in a remote-office-to-corporate-office network, you must use the Cisco IOS CLI.

For information on how to use the Cisco 800 Fast Step application, refer to the application online help. For information on how to configure a firewall using the CLI, refer to the Cisco IOS Firewall Feature Set feature module. (See the "Feature Modules" section.)

Forwarding Incoming Call to Unused Port

A new command forward-to-unused-port has been added to the dial peer configuration. The default is no forward-to-unused-port.

Suppose a call to 555-1111 is received and its dial peer is fetched and this points to port 1. The following will determine where the new call will be forwarded:

Outgoing SPID Hunt

Outgoing hunt is a new pots feature on the Cisco 800 series. This feature is available for US switch types only. When enabled, the CSM will look for a free SPID to use for out going voice calls. If no calls are in progress then the SPID associated with the dial-peer destination is used. The customer must continue to program dial peers. By default, this feature is off.

Command syntax:

pots outgoing-hunt
no pots outgoing-hunt

New Features in Release 12.0(3)T

Cisco IOS Release 12.0(3)T was the first 12.0 T release to support Cisco 800 series routers.

The following new software enhancements, which were introduced in Release 12.0(1)T, are supported by the Cisco 800 series beginning in this release.

Voice Features Over ISDN

The Cisco 800 series routers support the connection of analog telephones, fax machines, and modems. These devices are connected to basic telephone services through the ISDN line. The routers support the following supplementary services, which can be ordered from the telephone service provider:

The ISDN voice priority feature controls the priority of data and voice calls for the devices connected to the router telephone ports. If an ISDN circuit endpoint is busy with a data call or calls, and either a voice call comes in or you attempt to place a voice call, the data call is handled per the voice priority setting.

Automatic Detection of ISDN Switch and SPIDs

This feature applies to North America only. The Cisco 800 series routers can detect the ISDN switch that supports the ISDN line and the service profile identifiers (SPIDs) assigned by the telephone service provider. SPIDs identify the ISDN B channels. The SPID format is generally an ISDN telephone number with numbers added to it, for example, 40855522220101. Depending on the switch that supports the ISDN line, the ISDN line could be assigned zero, one, or two SPIDs.

Easy IP Phase 2-DHCP Server

With the introduction of Easy IP Phase 2, Cisco IOS software also supports Intelligent DHCP Relay functionality. A DHCP Relay Agent is any host that forwards DHCP packets between clients and servers. A DHCP Relay Agent enables the client and server to reside on separate subnets. If the Cisco IOS DHCP server cannot satisfy a DHCP request from its own database, it can forward the DHCP request to one or more secondary DHCP servers defined by the network administrator using standard Cisco IOS ip helper-address functionality.

Time-Based Access Lists

It is now possible to implement access lists based on the time of day. To do so, you create a time range that defines specific times of the day and week. The time range is identified by a name, and then referenced by a function, so that those time restrictions are imposed on the function itself.

Currently, IP and IPX extended access lists are the only functions that can use time ranges. The time range allows the network administrator to define when the permit or deny statements in the access list are in effect. Prior to this feature, access list statements were always in effect once they were applied. Both named or numbered access lists can reference a time range.

RIP Enhancements

Triggered extensions to IP RIP increase efficiency of RIP on point-to-point, serial interfaces.

Routers are used on connection-oriented networks to allow potential connectivity to many remote destinations. Circuits on the WAN are established on demand and are relinquished when the traffic subsides. Depending on the application, the connection between any two sites for user data could be short and relatively infrequent.

There were two problems using RIP to connect to a WAN:

To overcome these limitations, triggered extensions to RIP cause RIP to send information on the WAN only when there has been an update to the routing database. Periodic update packets are suppressed over the interface on which this feature is enabled.

ISDN MIB RFC2127

The new Integrated Services Digital Network (ISDN) Management Information Base (MIB) RFC2127 has been designed to provide useful information in accordance with the IETF's new standard for the management of ISDN interfaces. It controls all aspects of ISDN interfaces. RFC2127 provides information on the physical Basic Rate Interfaces (BRIs), control and statistical information for B (bearer) and D (signaling) channels, terminal endpoints, and directory numbers.

Important Notes

The following sections contain important notes about Cisco IOS Release 12.0 that can apply to the Cisco 800 series.

Last Maintenance Release of Cisco IOS Release 12.0 T

Cisco IOS Release 12.0(6)T has been renamed 12.0(7)T to align this release with the 12.0(7) mainline release. The closed caveats for Release 12.0(7)T are identical to the caveats closed in the 12.0(7) mainline release. There was no change in the feature content of the renamed release--the features in 12.0(6)T are the same as 12.0(7)T. Release 12.0(7)T is the last maintenance release of the 12.0 T release train.

Customers needing closure of caveats for the 12.0 T features should migrate to the 12.1mainline release, which has the complete feature content of Release 12.0 T and will eventually reach General Deployment (GD). Release 12.0 T is a super set of the 12.0 mainline release, so all caveats closed in the 12.0 mainline are also closed in 12.0 T.

Cisco 800 Series Router Clock--CSCdp09409

To run IPSec successfully, the Cisco 800 series router clock needs to be set accurately. Cisco 800 series router clocks are set and maintained using Simple Network Time Protocol (SNTP). For best results, set up a Network Time Protocol (NTP) server to periodically send time information messages to Cisco 800 series routers. See the SNTP configuration and command reference documentation for configuration instructions. If you do not have an NTP server, you must reset the Cisco 800 series router clock using the clock set command each time you restart the router.

The SNTP configuration documentation is available in the chapter "Monitoring the Router and Network" in the "System Management" volume of the Configuration Fundamentals Configuration Guide in the Cisco IOS documentation set.

The SNTP command reference documentation is available in the chapter "Router and Network Monitoring Commands" in the "System Management Commands" volume of the Configuration Fundamentals Command Reference manual in the Cisco IOS documentation set.

Downloading Images

Before attempting to download new images, you must first delete files in your router's Flash memory. Be sure to use the delete command, not erase, to free up space. Entering erase will remove all files, including the configuration.

Cisco IOS Release 12.0(4)XM

The images introduced in Release 12.0(4)XM apply to the Cisco 805 router only. They are not supported by the Cisco 801, 802, 803 or 804. For more information about this special release, see the Release Notes for the Cisco 805 Router for Cisco IOS Release 12.0(4)XM on CCO.

Dial Peer Limitation

The isdn answer1 and isdn answer2 commands determine which called telephone numbers, for example, 555-1111 and 555-2222, a Cisco 800 series router can answer. Using these commands limits a router to using the two dial peers that contain the telephone numbers 555-1111 and 555-2222. (When not using these commands, a router can use up to six dial peers.)

A sample scenario in which the isdn answer1 and isdn answer2 commands are used is when a Cisco 801 or Cisco 803 router is connected with other ISDN devices to an ISDN S-bus.

Excessive ISDN Line Activation

The following protocols send updates that can cause an ISDN line to be activated excessively thereby increasing your monthly ISDN line cost:

For information on preventing this situation, refer to the Cisco 800 Series Routers Software Configuration Guide. This guide contains information on setting up extended access lists to prevent IP, UDP, IPX, and SNTP updates from activating the ISDN line. For CDP, make certain that you enter the no cdp enable command to disable CDP.

Hanging During Boot

If an illegal console configuration is issued to the router, the console will then fail the POST test during boot and cause the router to hang. There is no way to recover a unit in this state except for pulling the soldered boot flash and re-burning the boot ROM.

This problem has been resolved in TinyROM version 1.0(3), a downloadable ROM upgrade available from CCO. Please contact Cisco to upgrade to this version or later, and prevent this problem from occurring.

Phone Mate Answering Machine Model 9200

Phone Mate answering machine model 9200 failed to recognize the ringing signal sent by AMD R79 ringing SLIC. This was confirmed by testing against Phone Mate model 3750 and newer model 9300.

NVRAM Data Storage Limitation in Release 12.0(4)T and Earlier

The Cisco 800 router nonvolatile RAM (NVRAM) has a configuration data storage limitation in Cisco IOS Release 12.0(4)T and earlier releases. This problem was resolved in Release 12.0(5)T. Because of this limitation, you might not be able to save the digital certificate into the NVRAM if a large amount of other configuration data already exists. Cisco recommends that you not power off your router if you were not able to save the digital certificate. If you power off your router without successfully saving the digital certificate, you will need to generate the keys and request a new digital certificate from the Certificate Authority (CA) server after powering on the router again.

B Channel Activation

When a call comes in, a B channel is activated. If the amount of traffic on the B channel exceeds a threshold, the other B channel is activated. If the amount of traffic falls below the threshold, one of the B channels is deactivated. The B channel that is initially activated when the call comes in is not necessarily B1 nor is the B channel that is deactivated when the traffic level lessens necessarily B2.

Cisco IOS Syslog Failure

Certain versions of Cisco IOS software may fail or hang when they receive invalid User Datagram Protocol (UDP) packets sent to their syslog ports (port 514). At least one commonly used Internet scanning tool generates packets that cause such problems. This fact has been published on public Internet mailing lists, which are widely read both by security professionals and by security crackers. This information should be considered in the public domain.

Attackers can cause Cisco IOS devices to repeatedly fail and reload, resulting in a completely disabled Cisco IOS device that needs to be reconfigured by its administrator. Some Cisco IOS devices have been observed to hang instead of failing when attacked. These devices do not recover until they are manually restarted by reset or power cycling. An administrator must personally visit an attacked, hung device to restart it, even if the attacker is no longer actively sending any traffic. Some devices have failed without providing stack traces; some devices may indicate that they were "restarted by power-on," even when that is not the case.

Assume that any potential attacker is likely to know that existence of this problem and the ways to exploit it. An attacker can use tools available to the public on the Internet and does not need to write any software to exploit the vulnerability. Minimal skill is required and no special equipment is required.

Despite Cisco specifically inviting such reports, Cisco has received no actual reports of malicious exploitation of this problem.

This vulnerability notice was posted on Cisco's World Wide Web site:

http://www.cisco.com/warp/public/770/iossyslog-pub.shtml

This information was also sent to the following e-mail and USENET news recipients:

Affected Devices and Software Versions

Vulnerable devices and software versions are specified in Table 7, Affected and Repaired Software Versions. Affected versions include Releases 11.3 AA, 11.3 DB, and all 12.0 versions (including 12.0 mainline, 12.0 S, 12.0 T, and any other regular released version whose number starts with 12.0), up to the repaired releases listed in Table 7. Cisco is correcting the problem in certain special releases and will correct it in future maintenance and interim releases. See Table 7, Affected and Repaired Software Versions for details. Cisco intends to provide fixes for all affected IOS variants.

No particular configuration is needed to make a Cisco IOS device vulnerable. It is possible to filter out attack traffic by using access lists. See the "Workarounds" section for techniques. However, except at Internet firewalls, the appropriate filters are not common in customer configurations. Carefully evaluate your configuration before assuming that any filtering you have protects you against this attack.

The most commonly used or asked-about products are listed below. If you are unsure whether your device is running Cisco IOS software, log in to the device and issue the show version command. Cisco IOS software will identify itself simply as "IOS" or "Internetwork Operating System Software". Other Cisco devices will not have the show version command, or they will identify themselves differently in their output. The most common Cisco devices that run Cisco IOS software include the following:

Affected software versions, which are relatively new, are not necessarily available on every device listed above. If you are not running Cisco IOS software, you are not affected by this problem.

The following Cisco devices are not affected:

This vulnerability has been assigned Cisco bug ID CSCdk77426.

Solution

Cisco offers free software updates to correct this vulnerability for all affected customers--regardless of their contract status. However, because this vulnerability information has been disseminated by third parties, Cisco has released this notice before updates are available for all software versions. Table 7 gives Cisco's projected fix dates.

Make sure your hardware has adequate RAM to support the new software before installing it. The amount of RAM is seldom a problem when you upgrade within a major release (say, from 11.2[11]P to 11.2[17]P), but it is often a factor when you upgrade between major releases (say, from 11.2 P to 11.3 T).

Because fixes will be available for all affected releases, this vulnerability will rarely, if ever, require an upgrade to a new major release. Cisco recommends very careful planning for any upgrade between major releases. Make certain no known bugs will prevent the new software from working properly in your environment.

Further upgrade planning assistance is available on Cisco's World Wide Web site at:

http://www.cisco.com

If you have service contracts you can obtain new software through your regular update channels (generally through Cisco's World Wide Web site). You can upgrade to any software release, but you must remain within the boundaries of the feature sets you have purchased.

If you do not have service contracts, you can upgrade to obtain only the bug fixes; free upgrades are restricted to the minimum upgrade required to resolve the defects. In general, you will be restricted to upgrading within a single row of Table 7, except when no upgrade within the same row is available in a timely manner. Obtain updates by contacting one of the following Cisco Technical Assistance Centers (TACs):

Give the URL of this notice (http://www.cisco.com/warp/public/770/iossyslog-pub.shtml) as evidence for a free update. Non-contract customers must request free updates through the TAC. Please do not contact either "psirt@cisco.com" or "security-alert@cisco.com" for software updates.

Workarounds

You can work around this vulnerability by preventing any affected Cisco IOS device from receiving or processing UDP datagrams addressed to its port 514. This can be done either by using packet filtering on surrounding devices, or by using input access list filtering on the affected IOS device itself.

If you use an input access list, apply that list to all interfaces to which attackers may be able to send datagrams. Interfaces include not only physical LAN and WAN interfaces but also virtual subinterfaces of those physical interfaces, as well as virtual interfaces and interface templates corresponding to GRE, L2TP, L2F, and other tunneling protocols.

The input access list must block traffic destined for UDP port 514 at any of the Cisco IOS device's own IP addresses, as well as at any broadcast or multicast addresses on which the Cisco IOS device may be listening. Be sure to block both old-style "all-zeros" broadcasts and new-style "all-ones" broadcasts. It is not necessary to block traffic being forwarded to other hosts--only traffic actually addressed to the Cisco IOS device is of interest.

No single input access list works in all configurations. Know the effect of your access list in your specific configuration before activating it.

The following example shows a possible access list for a three-interface router, along with the configuration commands needed to apply the list. The example assumes input filtering is not needed, other than as a workaround for this problem:

! Deny all multicasts, and all unspecified-net broadcasts, to port 514
access-list 101 deny udp any 224.0.0.0 31.255.255.255 eq 514
! Deny old-style unspecified-net broadcasts
access-list 101 deny udp any host 0.0.0.0 eq 514
! Deny network-specific broadcasts. This example assumes that all of
! the local interfaces are on the class B network 172.16.0.0, subnetted
! everywhere with mask 255.255.255.0. This will differ from network
! to network. Note that we block both new-style and old-style broadcasts.
access-list 101 deny udp any 172.16.0.255 0.0.255.0 eq 514
access-list 101 deny udp any 172.16.0.0   0.0.255.0 eq 514
! Deny packets sent to the addresses of our own network interfaces.
access-list 101 deny udp any host 172.16.1.1 eq 514
access-list 101 deny udp any host 172.16.2.1 eq 514
access-list 101 deny udp any host 172.16.3.3 eq 514
! Permit all other traffic (default would be to deny)
access-list 101 permit ip any any
 
! Apply the access list to the input side of each interface
interface ethernet 0
ip address 172.16.1.1 255.255.255.0
ip access-group 101 in
 
interface ethernet 2
ip address 172.16.2.1 255.255.255.0
ip access-group 101 in
 
interface ethernet 3
ip address 172.16.3.3 255.255.255.0
ip access-group 101 in
 

Listing all possible addresses--especially all possible broadcast addresses--to which attack packets may be sent is complicated. If you do not need to forward any legitimate syslog traffic received on an interface, you can block all syslog traffic arriving on that interface. Remember that blocking will affect traffic routed through the Cisco IOS device as well as traffic destined to the device; if the IOS device is expected to forward syslog packets, you will have to do the detailed filtering. Because input access lists impact system performance, install them with caution--especially on systems running very near their capacity.

Software Versions and Fixes

Many Cisco software images have been or will be specially reissued to correct this vulnerability. For example, regular released Cisco IOS version 12.0(2) is vulnerable, as are interim versions 12.0(2.1) through 12.0(2.3). The first fixed interim version of Release12.0 mainline software is Release12.0(2.4). However, a special release, 12.0(2a), contains only the fix for this vulnerability and does not include any other bug fixes from later 12.0 interim releases.

If you are running Release 12.0(2) and want to fix this problem without risking possible instability presented by installing the 12.0(2.4) interim release, you can upgrade to Release 12.0(2a). Release 12.0(2a) is a "code branch" from the Release 12.0(2) base, which will merge back into the Release 12.0 mainline at Release 12.0(2.4).

Special releases, like 12.0(2a), are one-time, spot fixes, and they will not be maintained. Thus, the upgrade path from Release 12.0(2a) is to Release 12.0(3).

Table 7 specifies information about affected and repaired software versions.


Note   All dates within this table are subject to change.


Table 7: Affected and Repaired Software Versions
Cisco IOS Major Release Description Special Fix1 First Fixed Interim Release2 Fixed Maintenance Release3
Unaffected Releases

11.2 and earlier releases--all variants

Unaffected early releases (no syslog server)

Unaffected

Unaffected

Unaffected

11.3, 11.3  T, 11.3 DA, 11.3 MA, 11.3 NA, 11.3 WA, 11.3(2)XA

11.3 releases without syslog servers

Unaffected

Unaffected

Unaffected

Releases Based on 11.3

11.3 AA

11.3 early deployment for AS58xx

11.3(7)AA2, 8-JAN-19994

11.3(7.2)AA

11.3(8)AA, 15-FEB-1999

11.3 DB

11.3 for Cisco NRP routing blade in Cisco 6400 xDSL DSLAM

 

 

11.3(7)DB2, 18-JAN-1999

Releases Based on 12.0

12.0

12.0 Mainline

12.0(2a), 8-JAN-1999

12.0(2.4)

12.0(3), 1-FEB-1999

12.0 T

12.0 new technology early deployment

12.0(2a)T1, 11-JAN-1999

12.0(2.4)T

12.0(3)T, 15-FEB-1999

12.0 S

ISP support; 7200, RSP, GSR

 

12.0(2.3)S, 27-DEC-1998

12.0(2)S5, 18-JAN-1999

12.0 DB

12.0 for Cisco 6400 universal access concentrator node switch processor (lab use)

 

 

12.0(2)DB, 18-JAN-1999

12.0(1)W

12.0 for Catalyst 8500 and LS1010

12.0(1)W5(5a) and 12.0(1a)W5(5b) (LS1010 platform only)

12.0(1)W5(5.15)

12.0(1)W5(6) (platform support for Catalyst 8540M will be in 12.0(1)W5(7))

12.0(0.6)W5

One-time early deployment for CH-OC-12 module in Catalyst 8500 series switches

Unaffected; one-time release

Unaffected

Unaffected; To upgrade use 12.0(1)W5 releases.

12.0(1)XA3

Short-life release; merged to 12/0T at 12.0(2)T

Obsolete

Merged

Upgrade to 12.0(2a)T1 or to 12.0(3)T.

12.0(1)XB

Short-life release for Cisco 800 series; merged to 12.0 T and 12.0 (3)T

12.0(1)XB1

Merged

Upgrade to 12.0(3)T.

12.0(2)XC

Short-life release for new features in Cisco 2600, Cisco 3600, uBR7200, uBR900 series; merged to 12.0 T at 12.0(3)T

12.0(2)XC1, 7-JAN-1999

Merged

Upgrade to 12.0(3)T

12.0(2)XD

Short-life release for ISDN voice features; merged to 12.0 T at 12.0(3)T

12.0(2)XD1, 18-JAN-1999

Merged

Upgrade to 12.0(3)T

12.0(1)XE

Short-life release

12.0(2)XE, 18-JAN-1999

Merged

Upgrade to 12.0(3)T

1A special fix is a one-time release that provides the most stable immediate upgrade path.
2Interim releases are tested less rigorously than regular maintenance releases; interim releases can contain serious bugs.
3Fixed maintenance releases are on a long-term upgrade path. Other long-term upgrade paths also exist.
4All dates in this table are estimates and are subject to change.
5This entry is not a misprint. The 12.0(2.3)S interim release is available before the 12.0(2)S regular release.

Caveats

Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.

This section only contains open and resolved caveats for the current Cisco IOS maintenance release.

All caveats in Release 12.0 T are also in Release 12.0.

For information on caveats in Cisco IOS Release 12.0, see Caveats for Cisco IOS Release  12.0 .

For information on caveats in Cisco IOS Release 12.0 T, see Caveats for Cisco IOS Release  12.0  T, which lists severity 1 and 2 caveats and is 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. You can reach Bug Navigator II on CCO at Software Center: Cisco IOS Software: Cisco IOS BugToolkit: Cisco Bug Navigator II, or at http://www.cisco.com/support/bugtools

Caveats for Release 12.0(7)T

This section describes possibly unexpected behavior by Release12.0(7)T, specific to the Cisco 800 series routers. Only severity 1 and 2 caveats are included.

CSCdp09409

To run IPSec successfully, the Cisco 800 series router clock needs to be set accurately. Cisco 800 series router clocks are set and maintained using Simple Network Time Protocol (SNTP). For best results, set up a Network Time Protocol (NTP) server to periodically send time information messages to Cisco 800 series routers. See the SNTP configuration and command reference documentation for configuration instructions. If you do not have an NTP server, you must reset the Cisco 800 series router clock using the clock set command each time you restart the router.
The SNTP configuration documentation is available in the chapter "Monitoring the Router and Network" in the "System Management" volume of the Configuration Fundamentals Configuration Guide in the Cisco IOS documentation set.
The SNTP command reference documentation is available in the chapter "Router and Network Monitoring Commands" in the "System Management Commands" volume of the Configuration Fundamentals Command Reference manual in the Cisco IOS documentation set.

CSCdp20454

The command show isdn status does not show the correct spid1/spid2 status. The command displays the SPIDs as not valid. This is only a cosmetic problem in Cisco IOS release 12.0(7)T; therefore, the SPIDs might actually be valid. To determine whether or not the SPIDs are valid, in Privileged EXEC mode use the command isdn call int bri 0 phone_number to make a call to the remote router. With the command debug isdn q931 turned on, the SPIDS are valid if the call "setup" and "teardown" appear identical. Alternatively, make a call to the remote router by using the command ping remote_IP_address. Receiving a successful response indicates that the SPIDS are valid. An example of cosmetically incorrect command ouput is displayed as follows:
    router# show isdn status
    Global ISDN Switchtype = basic-ni
    ISDN BRI0 interface
            dsl 0, interface ISDN Switchtype = basic-ni
        Layer 1 Status:
            ACTIVE
        Layer 2 Status:
            TEI = 123, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
            TEI = 124, Ces = 2, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
            TEI 123, ces = 1, state = 8(established)
                spid1 configured, spid1 sent, spid1 NOT valid
            TEI 124, ces = 2, state = 8(established)
                spid2 configured, spid2 sent, spid2 NOT valid
        Layer 3 Status:
            0 Active Layer 3 Call(s)
        Activated dsl 0 CCBs = 0
        The Free Channel Mask:  0x80000003
        Total Allocated ISDN CCBs = 0
    

CSCdp60086

The frame-relay tunnel subcommand is not available on the Cisco 1600, 1700, and 800 series platforms. This subcommand is only available in IOS images corresponding to Enterprise feature sets:

router(config-if)# frame-relay route 19 interface ?

Serial Serial
Tunnel Tunnel interface

CSCdp62196

If a Cisco 804 router is running the Cisco IOS Release 12.0(4)T1 IP image and using an electrical phone plugged into a plain old telephone service (POTS) port with the ISDN line provisioned with US Caller ID, the router might have intermittent ringing problems.

This caveat has been resolved in Cisco IOS Release 12.1(3)T.

Related Documentation

The following sections describe the documentation available for the Cisco 800 series. These documents consist of hardware and software installation guides, Cisco IOS configuration and command references, system error messages, feature modules, and other documents.

Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online on CCO and the Documentation CD-ROM.

Use these release notes with these documents:

Release-Specific Documents

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

On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cross-Platform Release Notes
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cross-Platform Release Notes
Service & Support: Technical Documents
This document contains caveats applicable to all platforms for all maintenance releases of Release 12.0 T.
On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Caveats
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Caveats

Note   If you have an account with CCO, you can use Bug Navigator II to find caveats of any severity for any release. You can reach Bug Navigator II on CCO at Software Center: Cisco IOS Software: Cisco IOS BugToolkit: Cisco Bug Navigator II, or at http://www.cisco.com/support/bugtools

Platform-Specific Documents

These documents are available for the Cisco 800 series on CCO and the Documentation CD-ROM:

On CCO at:

Technical Documents: Documentation Home Page: Access Servers and Access Routers: Fixed Access Routers: Cisco 801-804 Routers or Cisco 805 Router

On the Documentation CD-ROM at:

Cisco Product Documentation: Access Servers and Access Routers: Fixed Access Routers: Cisco 801-804 Routers or Cisco 805 Router

Feature Modules

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

On CCO at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation

Cisco IOS Software Documentation Set

The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents that 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, Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide 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.

On CCO at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0:Configuration Guides and Command References

On the Documentation CD-ROM at:

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

Release 12.0 Documentation Set

Table 8 describes the contents of the Cisco IOS Release 12.0 software documentation set, which is available in electronic form and in printed form upon request.


Note   You can find the most current Cisco IOS documentation on CCO and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hard-copy documents were printed.

On CCO at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0


Table 8: Cisco IOS Software Release 12.0 Documentation Set
Books Chapter Topics

  • Configuration Fundamentals Configuration Guide

  • Configuration Fundamentals Command Reference

Configuration Fundamentals Overview
Cisco IOS User Interfaces
File Management
System Management

  • Bridging and IBM Networking Configuration Guide

  • Bridging and IBM Networking Command Reference

Transparent Bridging
Source-Route Bridging
Token Ring Inter-Switch Link
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
Cisco Mainframe Channel Connection
Airline Product Set

  • Dial Solutions Configuration Guide

  • Dial Solutions Command Reference

X.25 over ISDN
Appletalk Remote Access
Asynchronous Callback, DDR, PPP, SLIP
Bandwidth Allocation Control Protocol
ISDN Basic Rate Service
ISDN Caller ID Callback
PPP Callback for DDR
Channelized E1 & T1
Dial Backup for Dialer Profiles
Dial Backup Using Dialer Watch
Dial Backup for Serial Lines
Peer-to-Peer DDR with Dialer Profiles
DialOut
Dial-In Terminal Services
Dial-on-Demand Routing (DDR)
Dial Backup
Dial-Out Modem Pooling
Large-Scale Dial Solutions
Cost-Control Solutions
Virtual Private Dialup Networks
Dial Business Solutions and Examples

  • Cisco IOS Interface Configuration Guide

  • Cisco IOS Interface Command Reference

Interface Configuration Overview
LAN Interfaces
Logical Interfaces
Serial Interfaces

  • Network Protocols Configuration Guide, Part 1

  • Network Protocols Command Reference, Part 1

IP Overview
IP Addressing and 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

Network Protocols Overview
Apollo Domain
Banyan VINES
DECnet
ISO CLNS
XNS

  • Security Configuration Guide

  • Security Command Reference

AAA Security Services
Security Server Protocols
Traffic Filtering and Firewalls
IP Security and Encryption
Passwords and Privileges
Neighbor Router Authentication
IP Security Options

  • Cisco IOS Switching Services Configuration Guide

  • Cisco IOS Switching Services Command Reference

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

  • Wide-Area Networking Configuration Guide

  • Wide-Area Networking Command Reference

Wide-Area Network Overview
ATM
Frame Relay
SMDS
X.25 and LAPB

  • Voice, Video, and Home Applications Configuration Guide

  • Voice, Video, and Home Applications Command Reference

Voice over IP
Voice over Frame Relay
Voice over ATM
Voice over HDLC
Frame Relay-ATM Internetworking
Synchronized Clocks
Video Support
Universal Broadband Features

  • Quality of Service Solutions Configuration Guide

  • Quality of Service Solutions Command Reference

Policy-Based Routing
QoS Policy Propagation via BGP
Committed Access Rate
Weighted Fair Queueing
Custom Queueing
Priority Queueing
Weighted Random
Early Detection
Scheduling
Signaling
RSVP
Packet Drop
Frame Relay Traffic Shaping
Link Fragmentation
RTP Header Compression

  • Cisco IOS Software Command Summary

  • Dial Solutions Quick Configuration Guide

  • System Error Messages

  • Debug Command Reference

 


Note   Cisco Management Information Base (MIB) User Quick Reference is no longer published. For the latest list of MIBs supported by Cisco, see Cisco Network Management Toolkit on Cisco Connection Online. From CCO, click on the following path: Service & Support: Software Center: Network Mgmt Products: Cisco Network Management Toolkit: Cisco MIB.

Service and Support

For service and support for a product purchased from a reseller, contact the reseller, who offers a wide variety of Cisco service and support programs described in "Service and Support" of Cisco 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 Technical Assistance Center Home Page

If you have a CCO login account, you can access the following URL, which contains links and 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 CCO  and click on this path: Products & Technologies: Products: Technical Tips.

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 reach 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 package that 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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Posted: Sun Aug 13 02:01:36 PDT 2000
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