Table Of Contents
Release Notes for Cisco 2600 Series for Cisco IOS Release 12.1
Determining the Software Version
Upgrading to a New Software Release
Caveat CSCdr91706 and IOS HTTP Vulnerability
Command Changes in Release 12.1(5)
Cisco IOS Software Documentation Set
Release 12.1 Documentation Set
Software Configuration Tips on Cisco's Technical Assistance Center Home Page
Obtaining Technical Assistance
Contacting TAC by Using the Cisco TAC Website
Release Notes for Cisco 2600 Series for Cisco IOS Release 12.1
January 2, 2001
These release notes for the Cisco 2600 series support Cisco IOS Release 12.1(6). These release notes are updated as needed to describe new features, memory recommendations, 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 12.1(6), see Caveats for Cisco IOS Release 12.1 that accompanies these release notes. This caveats document is updated for every maintenance release and is also located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.1 located on CCO and the Documentation CD-ROM.
Contents
These release notes describe the following topics:
•
Software Configuration Tips on Cisco's Technical Assistance Center Home Page
•
Introduction
The Cisco 2600 series modular access routers are designed to adopt future technologies and scale to accommodate network expansion. The Cisco 2600 series shares modular interfaces with the Cisco 1600, Cisco 1700, and Cisco 3600 series, providing:
•
•
•
•
•
The Cisco 2600 series modular architecture adapts to changes in network technology as new services and applications become available. Driven by a powerful RISC processor, the Cisco 2600 series supports the advanced quality of service (QoS), security, and network integration features required in evolving enterprise networks.
System Requirements
This section describes the system requirements for Release 12.1:
•
•
Memory Recommendations
Note
Table 1 lists the minimum recommended memory for the Cisco 2600 series routers.
Hardware Supported
Cisco IOS Release 12.1 supports the Cisco 2600 series routers:
•
•
•
•
•
•
For detailed descriptions of the new hardware features for Cisco IOS Release 12.1, see the Cross-Platform Release Notes for Cisco IOS Release 12.1.
Table 2 lists the supported interfaces for the Cisco 2600 series routers.
Table 2 Supported Interfaces on the Cisco 2600 Series
1- or 2-port Ethernet (10BaseT)
All Cisco 2600 series platforms
1-port Token Ring (RJ-45)
Cisco 2612, Cisco 2613
1- or 2-port 10/100 Mbps Ethernet
Cisco 2620, Cisco 2621
1-port Ethernet
All Cisco 2600 series platforms
4-port Ethernet
All Cisco 2600 series platforms
1-port ATM-25 RJ-45 interface
All Cisco 2600 series platforms
16- or 32-port asynchronous/synchronous serial low speed (128 kbps max)
All Cisco 2600 series platforms
4- or 8-port asynchronous/synchronous serial low speed
(128 kbps max)All Cisco 2600 series platforms
4-port T1 ATM network module with IMA (NM-4T1-IMA)
All Cisco 2600 series platforms
4-port E1 ATM network module with IMA (NM-4E1-IMA)
All Cisco 2600 series platforms
8-port T1 ATM network module with IMA (NM-8T1-IMA)
All Cisco 2600 series platforms
8-port E1 ATM network module with IMA (NM-8E1-IMA)
All Cisco 2600 series platforms
1-port, 24-channel T1 voice/fax module, supports 24 channels of medium-complexity codecs: G.729a/b, G.726, G.711 and fax or 12 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, two PVDM-12s, and one VWIC-1MFT-T14 . Part number: NM-HDV-1T1-24
All Cisco 2600 series platforms
1-port, enhanced 24-channel T1 voice/fax module, supports 24 channels of high- and medium-complexity codecs: G.729a/b, G.726, G.729, G.728, G.723.1, G.711, and fax. Consists of one NM-HDV, four PVDM-12s, and one VWIC-1MFT-T14. Part number: NM-HDV-1T1-24E
All Cisco 2600 series platforms
2-port, 48-channel T1 voice/fax module, supports add/drop multiplexing (drop and insert); 48 channels of medium-complexity codecs: G.729a/b, G.726,G.711, and fax; or 24 channels of G726, G729, G723.1, G.728, G729a/b, G711, and fax. Consists of one NM-HDV, four PVDM-12, and one VWIC-2MFT-T1-DI4. Part number: NM-HDV-2T1-48
All Cisco 2600 series platforms
High-density voice/fax network module spare (NM-HDV)
Digital E1/T1 Packet Voice Trunk Network Modules spare component
12-channel packet voice DSP module upgrade spare (PVDM-12)
Digital E1/T1 Packet Voice Trunk Network Modules spare component
1-port RJ-48 multiflex trunk - T1 (VWIC-1MFT-T1)4
Digital E1/T1 Packet Voice Trunk Network Modules spare component
2-port RJ-48 multiflex trunk - T1 (VWIC-2MFT-T1)4
Digital E1/T1 Packet Voice Trunk Network Modules spare component
2-port RJ-48 multiflex trunk with drop and insert - T1 (VWIC-2MFT-T1-DI)4
Digital E1/T1 Packet Voice Trunk Network Modules spare component
1- or 2-port channelized T1/ISDN PRI
All Cisco 2600 series platforms
1- or 2-port channelized T1/ISDN PRI with CSU
All Cisco 2600 series platforms
1- or 2-port channelized E1/ISDN PRI balanced
All Cisco 2600 series platforms
1- or 2-port channelized E1/ISDN PRI unbalanced
All Cisco 2600 series platforms
4-or 8-port ISDN BRI S/T interface
All Cisco 2600 series platforms
4- or 8-port ISDN BRI U (NT1) interface
All Cisco 2600 series platforms
8- or 16-port analog modems
All Cisco 2600 series platforms
1-port T1 multiflex trunk interface (VWIC-1MFT-T1)
All Cisco 2600 series platforms
1-port E1 multiflex trunk interface (VWIC-1MFT-E1)
All Cisco 2600 series platforms
2-port T1 multiflex trunk interface (VWIC-2MFT-T1)
All Cisco 2600 series platforms
2-port E1 multiflex trunk interface (VWIC-2MFT-E1)
All Cisco 2600 series platforms
2-port T1 multiflex trunk interface with drop and insert (VWIC-2MFT-T1-DI)
All Cisco 2600 series platforms
2-port E1 multiflex trunk interface with drop and insert (VWIC-2MFT-E1-DI)
All Cisco 2600 series platforms
1- or 2- voice interface card slots
All Cisco 2600 series platforms
1-slot high-density T1/E1 voice interface card slots6
All Cisco 2600 series platforms
2-port FXS voice/fax interface card7
All Cisco 2600 series platforms with Voice/Fax network modules
2-port E&M voice/fax interface card3
All Cisco 2600 series platforms with Voice/Fax network modules
2-port FXO voice/fax interface card3
All Cisco 2600 series platforms Voice/Fax network modules
1-port ISDN BRI S/T interface (requires external NT1)
All Cisco 2600 series platforms
1-port ISDN BRI (NT1) U
All Cisco 2600 series platforms
1-port 56/64 Kbps DSU/CSU
All Cisco 2600 series platforms
1-port fractional T1 with DSU/CSU
All Cisco 2600 series platforms
1-port high-speed serial (up to 2.048 Mbps)
All Cisco 2600 series platforms
2-port dual high-speed serial (up to 2.048 Mbps; asynchronous/synchronous support)
All Cisco 2600 series platforms
2-port asynchronous/synchronous (up to 128 Kbps)
All Cisco 2600 series platforms
Data compression AIM (up to 8.192 Mbps)
All Cisco 2600 series platforms
1 The voice/fax and ATM-25 network modules require Cisco IOS Plus feature sets.
2 The 1- or 2-port 10/100 Ethernet LAN interface for the Cisco 2621 and Cisco 2621 series routers is only available in Cisco IOS Release 12.0 XC and later.
3 Requires the Cisco IOS Plus feature sets.
4 See T1/E1 multiflex voice/WAN Interface cards in this table.
5 T1 multiflex voice/WAN Interface cards can be used in a chassis slot or installed in a Digital T1 Packet Voice Trunk Module. E1 multiflex voice/WAN interface cards can be installed in a chassis slot.
6 Uses the VWIC-MFT T1/E1 interface cards.
7 Requires the NM-1V or NM-2V network module.
Determining the Software Version
To determine the version of Cisco IOS software running on a Cisco 2600 series router, log in to the router and enter the show version EXEC command:
router>show versionCisco Internetwork Operating System SoftwareIOS (tm) 2600 Software (c2600-i-mz), Version 12.1(6), RELEASE SOFTWAREUpgrading to a New Software Release
For general information about upgrading to a new software release, see the product bulletin Cisco IOS Upgrade Ordering Instructions on CCO located at:
Service & Support: Software Center: Cisco IOS Software: Product Bulletins: Software
Under General System Software Bulletins, click Cisco IOS Upgrade Ordering Instructions, No. 957
Other Firmware Code
The latest version of analog modem firmware for the Cisco 2600 series supports the internal analog modems (both NM-16AM and NM-8AM) in a wide range of countries, starting with Cisco IOS Release 11.3(5)T and later releases. The latest firmware (version 1.2.0) also supports dial-out and fax-out.
On CCO, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Access Servers and Access Routers: Modular Access Routers: Cisco 2600 Series Routers: Analog Modem Firmware
On the Documentation CD-ROM at:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 2600 Series Routers: Analog Modem Firmware
Feature Set Tables
Cisco IOS software is packaged in feature sets consisting of software images—depending on the platform. Table 3 lists the Cisco IOS Release12.1(6) feature set images for the Cisco 2600 series platforms.
Caution
Table 4 and Table 5 list the features and feature sets supported by the Cisco 2600 series in Cisco IOS Release 12.1(6) and use the following conventions:
•
•
Note
Table 4 Feature List by Feature Set for the Cisco 2600 Series
FW IDS
FW/ IDS Plus IPSec
56
IPX/
AT/
DEC
Plus
Plus
IPSec
3DES
Plus
IPSec
56
FW/ IDS
Plus
IPSec
3DES
IPX/
AT/
DEC
Plus
IPX/
AT/
DEC/
FW/ IDS Plus1FE2P Network Module
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Fast Ethernet (10baseT/100baseT Mbps) Network Ports1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Layer 2 Tunneling Protocol (L2TP)
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Layer 2 Tunneling Protocol Dial-out (L2TP)
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
RIP Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ Ethernet Redundancy
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ Load Balancing Enhancements
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ Peer Group Cluster
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ RSVP Bandwidth Reservation
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
SNA Switching Services
No
No
No
No
No
No
No
No
No
No
No
Airline Product Set Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Async over UDP
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Data Compression Advanced Interface Module (AIM)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Easy IP Phase 2-DHCP Server
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Flow-based WRED
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
IP RTP Priority
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
IS-IS Multiarea Support
No
No
No
No
No
No
No
No
No
No
No
NetFlow Policy Routing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
OSPF Packet Pacing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PGM Router Assist
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Response Time Reporter (RTR) Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Service Assurance Agent Enhancements (formerly RTR)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Web Cache Communications Protocol V2 (WCCPv2)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CNS Client for Cisco IOS (IPSec Policy Agent II)
No
No
Yes
No
No
No
No
Yes
Yes
No
No
ISDN MIB RFC 2127
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Multicast Routing Monitor
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Process MIB
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SNMP Version 3
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Subnetwork Bandwidth Manager
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CLI String Search
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Gateway Support for Alternate Gatekeeper
No
No
No
Yes
No
No
No
No
No
No
No
Express RTP and TCP Header Compression
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
H.235 Accounting and Security Enhancements for Cisco Gateways
No
No
No
Yes
No
No
No
No
No
No
No
H.323 Version 2 Support
No
No
No
Yes
No
No
No
No
No
No
No
Multimedia Conference Manager
No
No
No
Yes
No
No
No
No
No
No
No
H.323 Multizone Enhancements
No
No
No
Yes
No
No
No
No
No
No
No
IP to ATM Class of Service (CoS)
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Triple DES Encryption
No
No
No
No
No
No
Yes
No
Yes
No
No
Cisco Secure Integrated Software
No
Yes
Yes
No
No
No
No
No
Yes
No
Yes
Cisco IOS Firewall Feature Set Platform Support
No
Yes
Yes
No
No
No
No
No
Yes
No
Yes
Firewall Feature Set Enhancements
No
Yes
Yes
No
No
No
No
No
Yes
No
Yes
IOS STP Enhancements
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
1- and 2-port T1/E1 Multiflex VWICs
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Busyout Monitor
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
BRI Voice over IP: VIC-2BRI-S/T-TE
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Digital T1 Packet Voice Trunk Network Modules
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Interactive Voice Response for Cisco Access
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Voice over Frame Relay Enhancements (Queueing)
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Voice over Frame Relay Enhancements (FRF.11 and FRF.12)
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Class-Based Weight Fair Queuing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Low Latency Queuing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
802.1Q Support and ISL VLAN1
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Annex G (X.25) over Frame Relay
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Debit Card for Packet Telephony
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
DNS-Based X.25 Routing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Frame Relay End-to-End Keepalive
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
IOS IEEE 802.1Q Support
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
ISDN Dynamic Multiple Encaps for Dial-in
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
ISDN Dynamic Multiple Encaps for Dial-in with Frame Relay Support
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Mobile IP
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Multicast Source Discovery Protocol (MSDP)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Multiport T1/E1 ATM Network Module with Inverse Multiplexing over ATM
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Packet Telephony Settlement
No
No
No
No
No
No
No
No
No
No
No
PPP over Frame Relay
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Time-based Access Lists
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
VPDN Group Reorganization
No
No
No
No
Yes
No
No
No
No
Yes
Yes
VPDN Per-user Configuration
No
No
No
No
Yes
No
No
No
No
Yes
Yes
VPN Tunnel Management
No
No
No
No
Yes
No
No
No
No
Yes
Yes
X.25 Closed User Groups
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
X.25 Load Balancing
No
No
No
No
No
No
No
No
No
No
No
X.25 Switch Local Acknowledgment
No
No
No
No
No
No
No
No
No
No
No
X.25 over ISDN D-Channel
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
X.25 Remote Failure Detection
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
1 Cisco 2620 and 2621 only
Table 5 Feature List by Feature Set for the Cisco 2600 Series
prise
Plus
prise
Plus
IPSec
3DES
prise
Plus
IPSec 56
prise/
SNASw Plus
prise/
SNASw
Plus
IPSec
3DES
prise/
SNASw
PlusIPSec 56
prise/FW/IDS
Plus
IPSec
3DES
prise/FW/IDS
Plus
IPSec 561FE2P Network Module
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Fast Ethernet (10/100 Mbps) Network Ports1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Layer 2 Tunneling Protocol (L2TP)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Layer 2 Tunneling Protocal Dial-out (L2TP)
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
RIP Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ Ethernet Redundancy
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
DLSw+ Load Balancing Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
DLSw+ Peer Group Cluster
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
DLSw+ RSVP Bandwidth Reservation
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
SNA Switching Services
No
No
No
Yes
Yes
Yes
No
No
No
Airline Product Set Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Async over UDP
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Data Compression Advanced Interface Module (AIM)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Easy IP Phase 2-DHCP Server
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Flow-based WRED
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
IP RTP Priority
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
IS-IS Multiarea Support
No
No
No
No
No
No
No
No
No
NetFlow Policy Routing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
OSPF Packet Pacing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
PGM Router Assist
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Response Time Reporter Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Service Assistance Agent (formerly RTR) Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Web Cache Communications Protocol V2 (WCCPv2)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CNS Client for Cisco IOS (IPSec Policy Agent II)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
ISDN MIB RFC 2127
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Multicast Routing Monitor
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Process MIB
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SNMP Version 3
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Subnetwork Bandwidth Manager
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CLI String Search
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Gateway Support for Alternate Gatekeeper
No
No
No
No
No
No
No
No
No
Express RTP and TCP Header Compression
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
H.235 Accounting and Security Enhancements for Cisco Gateways
No
No
No
No
No
No
No
No
No
H.323 Version 2 Support
No
No
No
No
No
No
No
No
No
Multimedia Conference Manager
No
No
No
No
No
No
No
No
No
H.323 Multizone Enhancements
No
No
No
No
No
No
No
No
No
IP to ATM Class of Service (CoS)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Triple DES Encryption
No
Yes
No
No
Yes
No
Yes
No
No
Cisco Secure Integrated Software
No
No
No
Yes
Yes
No
No
No
No
Cisco IOS Firewall Feature Set Platform Support
No
No
No
No
No
No
Yes
Yes
No
Firewall Feature Set Enhancements
No
No
No
No
No
No
Yes
Yes
No
IOS STP Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
1 and 2-port T1/E1 Multiflex VWICs
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Busyout Monitor
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
BRI Voice over IP:
VIC-2BRI-ST-TEYes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Digital T1 Packet Voice Trunk Network Modules
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Interactive Voice Response for Cisco Access
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Voice over Frame Relay Enhancements (Queueing)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Voice over Frame Relay Enhancements (FRF.11 and FRF.12)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Class-Based Weighted Fair Queueing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Low Latency Queueing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
802.1Q Support and ISL VLAN1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Annex G (X.25) over Frame Relay
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Debit Card for Packet Telephony
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
DNS-Based X.25 Routing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Frame Relay End-to-End Keepalive
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
IOS IEEE 802.1Q Support
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
ISDN Dynamic Multiple Encaps for Dial-in
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
ISDN Dynamic Multiple Encaps for Dial-in with Frame Relay Support
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Mobile IP
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Multicast Source Discovery Protocol (MSDP)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Multiport T1/E1 ATM Network Module with Inverse Multiplexing over ATM
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Packet Telephony Settlement
No
No
Yes
No
No
No
No
No
No
PPP over Frame Relay
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Time-Based Access List
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
VPDN Group Reorganization
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
VPDN Per-user Configuration
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
VPN Tunnel Management
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
X.25 Closed User Groups
No
No
No
No
No
No
No
No
No
X.25 Load Balancing
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
X.25 Switch Local Acknowledgment
No
No
No
No
No
No
No
No
No
X.25 on ISDN D-Channel
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
X.25 Remote Failure Detection
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
1 Cisco 2620 and 2621 only
New and Changed Information
The following is a list of the new hardware and software feature categories supported by the Cisco 2600 for Release 12.1. These categories are broken down by feature in Tables 4 and 5.
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Important Notes
Caveat CSCdr91706 and IOS HTTP Vulnerability
A defect in multiple releases of Cisco IOS software will cause a Cisco router or switch to halt and reload if the IOS HTTP service is enabled, browsing to http://router-ip/anytext?/ is attempted, and the enable password is supplied when requested. This defect can be exploited to produce a denial of service (DoS) attack.
The vulnerability, identified as Cisco bug ID CSCdr91706, affects virtually all mainstream Cisco routers and switches running Cisco IOS software releases 12.0 through 12.1, inclusive. This is not the same defect as CSCdr36952.
The vulnerability has been corrected and Cisco is making fixed releases available for free to replace all affected IOS releases. Customers are urged to upgrade to releases that are not vulnerable to this defect as shown in detail below.
This vulnerability can only be exploited if the enable password is known or not set.
You are strongly encouraged to read the complete advisory, which is available at
http://www.cisco.com/warp/public/707/ioshttpserverquery-pub.shtml.
Command Changes in Release 12.1(5)
The ppp ipcp command, which supplies Domain Name System (DNS) or Windows Internet Naming Service (WINS) addresses during IP Control Protocol (IPCP) negotiation, has been enhanced with the reject and accept keywords. These keywords allow enabling or disabling support for the Microsoft IPCP extensions defined by RFC 1877.
Product Number Change
Beginning with Cisco IOS Release 12.0(7)XK, Cisco changed the product numbers used to order a specific Cisco IOS software image. In short, Cisco will remove the periods separating the release train, maintenance release, and build number. The following table provides some examples.
Deprecated MIBs
Older Cisco Management Information Bases (MIBs) will be replaced in a future release. OLD-CISCO-* MIBS are currently migrated into more scalable MIBs—without affecting existing Cisco IOS products or NMS applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 6.
Caveats
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only select severity 3 caveats are included in the caveats document.
For information on caveats in Cisco IOS Release 12.1, see Caveats for Cisco IOS Release 12.1, which lists severity 1 and 2 caveats and select severity 3 caveats for Cisco IOS Release 12.1 and is located on CCO and the Documentation CD-ROM.
Note
http://www.cisco.com/support/bugtools
Related Documentation
The following sections describe the documentation available for the Cisco 2600 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:
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Release-Specific Documents
The following documents are specific to or support Cisco IOS Release 12.1(6) and are located on CCO and the Documentation CD-ROM:
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On CCO, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes for Cisco IOS Release 12.1
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes for Cisco IOS Release 12.1
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To reach these documents, refer to the Service & Support section at this path on CCO:
Technical Documents
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On CCO, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats: Caveats for Cisco IOS Release 12.1
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS 12.1: Caveats: Caveats for Cisco IOS Release 12.1
Note
http://www.cisco.com/support/bugtools
Platform-Specific Documents
These documents are available for the Cisco 2600 on CCO and the Documentation CD-ROM:
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On CCO, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Access Servers and Access Routers: Modular Access Routers: Cisco 2600 Series Routers
On the Documentation CD-ROM at:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 2600 Series Routers
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 which 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, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References: Cisco IOS Interface Configuration Guide or Cisco IOS Interface Command Reference
On the Documentation CD-ROM at:
Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References: Cisco IOS Interface Configuration Guide or Cisco IOS Interface Command Reference
Release 12.1 Documentation Set
Table 7 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form upon request.
Note
You can reach the Cisco IOS documentation set on CCO, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
You can reach the Cisco IOS documentation set on the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
Note
Software Configuration Tips on Cisco's 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/technotes/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:
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Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following sites:
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Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
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http://www.cisco.com/cgi-bin/order/order_root.pl
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http://www.cisco.com/go/subscription
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Documentation Feedback
If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
You can e-mail your comments to bug-doc@cisco.com.
To submit your comments by mail, for your convenience many documents contain a response card behind the front cover. Otherwise, you can mail your comments to the following address:
Cisco Systems, Inc.
Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
Cisco.com provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can self-register on Cisco.com to obtain additional personalized information and services. Registered users can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.
To access Cisco.com, go to the following website:
http://www.cisco.com
Technical Assistance Center
The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:
http://www.cisco.com/tac
P3 and P4 level problems are defined as follows:
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In each of the above cases, use the Cisco TAC website to quickly find answers to your questions.
To register for Cisco.com, go to the following website:
http://www.cisco.com/register/
If you cannot resolve your technical issue by using the TAC online resources, Cisco.com registered users can open a case online by using the TAC Case Open tool at the following website:
http://www.cisco.com/tac/caseopen
Contacting TAC by Telephone
If you have a priority level 1(P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
P1 and P2 level problems are defined as follows:
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Guest
