Table Of Contents
Release Notes for the Cisco 2600 Series for Cisco IOS Release 12.1 XM
Upgrading to a New Software Release
Determining the Software Version
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM7
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM6
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM5
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM4
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM3
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM2
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM1
New Hardware Features in Cisco IOS Release 12.1(5) XM
2-Port Analog DID Voice Interface (VIC2-DID)
New Software Features in Cisco IOS Release 12.1(5) XM
Analog DID for Cisco 2600 and Cisco 3600 Series Routers
MGCP Basic CLASS and Operator Services
SIP Diversion Header Implementation for Redirecting Number
SIP Gateway Support for Third Party Call Control
WT-2750 Multipoint Broadband Wireless System
Non-Software Caveats - UNII Configuration
Open Caveats — Cisco IOS Release 12.1(5) XM7
Resolved Caveats — Cisco IOS Release 12.1(5) XM7
Open and Resolved Caveats for Release 12.1(5) XM6
Open and Resolved Caveats for Release 12.1(5) XM5
Open Caveats for Release 12.1(5) XM4
Resolved Caveats for Release 12.1(5) XM4
Open Caveats for Release 12.1(5) XM3
Resolved Caveats for Release 12.1(5) XM3
Open Caveats for Release 12.1(5) XM2
Closed and Resolved Caveats for Release 12.1(5) XM2
Open Caveats for Release 12.1(5) XM1
Closed and Resolved Caveats for Release 12.1(5) XM1
Open Caveats for Release 12.1(5) XM
Resolved Caveats for Release 12.1(5) XM
Cisco IOS Software Documentation Set
Release 12.1 Documentation Set
Obtaining Technical Assistance
Contacting TAC by Using the Cisco TAC Website
Release Notes for the Cisco 2600 Series for Cisco IOS Release 12.1 XM
June 13, 2002
Cisco IOS Release 12.1(5) XM7
78-12048-01 Rev. G1
These release notes for the Cisco 2600 series describe the enhancements provided in Cisco IOS Release 12.1(5) XM7. These release notes are updated as needed.
For a list of the software caveats that apply to Release 12.1(5) XM7, see the "Caveats" section and Caveats for Cisco IOS Release 12.1T that accompanies these release notes. This caveats document is updated for every maintenance release and is also located on Cisco.com and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.1 located on Cisco.com and the Documentation CD-ROM.
Contents
These release notes describe the following topics:
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Obtaining Technical Assistance
Introduction
Cisco Systems extends enterprise-class and managed services Customer Premises Equipment (CPE) versatility, integration, and power to branch offices with the Cisco 2600 series modular access router family. The widely deployed Cisco 2600 series modular access routers are designed to enable customers to easily 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 a solution to meet today's branch office needs for applications such as:
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The Cisco 2600 series modular architecture provides the versatility needed to adapt 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 today's evolving enterprise networks.
For information on new features and Cisco IOS commands supported by Cisco IOS Release 12.1(5)XM7, see "New and Changed Information," page 9 and "Related Documentation," page 20.
System Requirements
This section describes the system requirements for Cisco IOS Release 12.1(5) XM7:
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Memory Recommendations
Table 1 lists recommended memory for the Cisco 2600 series routers for Cisco IOS Release 12.1(5) XM7.
Hardware Supported
Cisco IOS Release 12.1(5) XM7 supports the following Cisco 2600 series routers:
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•
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For detailed descriptions of the new hardware features, see the "New and Changed Information" section.
Table 2 lists the supported interfaces on the Cisco 2600 series routers for Cisco IOS Release 12.1(5) XM7.
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, Cisco 2650, Cisco 26513
1-port Ethernet
All Cisco 2600 series platforms
4-port Ethernet
All Cisco 2600 series platforms
16- or 32-port asynchronous serial low speed (128 kbps max; NM-16A and NM-32A)
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 ATM T3 network module (NM-1A-T3)
All Cisco 2600 series platforms
1-port ATM E3 network module (NM-1A-E3)
All Cisco 2600 series platforms
1-port ATM-25 RJ-45 interface
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 T1/E1 packet voice trunk network modules spare component
12-channel packet voice DSP5 module upgrade spare (PVDM-12)
Digital T1/E1 packet voice trunk network modules spare component
1-port RJ-48 multiflex trunk - T1 (VWIC-1MFT-T1)4
Digital T1/E1 packet voice trunk network modules spare component
2-port RJ-48 multiflex trunk - T1 (VWIC-2MFT-T1)4
Digital T1/E1 packet voice trunk network modules spare component
2-port RJ-48 multiflex trunk with drop and insert - T1 (VWIC-2MFT-T1-DI)4
Digital T1/E1 packet voice trunk network modules spare component
1-port 30-channel E1 high-density voice network module (NM-HDV-1E1-30)
All Cisco 2600 series platforms
1-port enhanced 30-channel E1 high-density voice network module (NM-HDV-1E130E)
All Cisco 2600 series platforms
2-port 60-channel high-density voice network module (NM-HDV-2E1-60)
All Cisco 2600 series platforms
1- or 2-port channelized T1/ISDN PRI
All Cisco 2600 series platforms
1- or 2-port channelized T1/ISDN PRI with 6
All Cisco 2600 series platforms
1- or 2-port channelized E1/7 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 BRI8 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 slots10
All Cisco 2600 series platforms
2-port analog voice interface (VIC2-DID)
All Cisco 2600 series platforms
All Cisco 2600 series platforms with voice/fax network modules
2-port E&M13 voice/fax interface card3
All Cisco 2600 series platforms with voice/fax network modules
2-port FXO14 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/CSU15
All Cisco 2600 series platforms
1-port T1/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
Hardware Encryption AIM
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 2620 and Cisco 2621 series routers is only available in Cisco IOS Release 12.0 XC and later.
3 Cisco 2650 and 2651 routers require Cisco IOS Release 12.1(3a)T1 or later.
4 See T1/E1 multiflex voice/WAN interface cards in this table.
5 DSP = digital signal processor
6 CSU = channel service unit
7 ISDN = integrated services digital network
8 BRI = basic rate interface
9 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.
10 Uses the VWIC-MFT T1/E1 interface cards.
11 FXS = foreign exchange station
12 Requires the NM-1V or NM-2V network module.
13 E & M = recEiver and transMitter (or Ear and Mouth)
14 FXO = foreign exchange office
15 DSU/CSU = data service unit/channel service unit
Upgrading to a New Software Release
For general information about upgrading to a new software release, refer to Upgrading the Cisco IOS Software Release in Cisco Routers and Modems located at:
http://www.cisco.com/warp/public/130/upgrade_index.shtml
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(5) XM7, RELEASE SOFTWAREOther 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 Cisco.com, 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
The following sections list the new hardware and software features supported by the Cisco 2600 for Cisco IOS Release 12.1(5) XM7.
Caution
Tables 3, Part 1 and 3, Part 2 list the features and feature sets supported by the Cisco 2600 series in Cisco IOS Release 12.1(5) XM7 and use the following conventions:
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Note
Table 3, Part 1 Feature List by Feature Set for the Cisco 2600 Series
FW/IDS Plus IPSec 56
Plus
Plus
IPSec 3DES
Plus
IPSec 56
FW/IDS
Plus
IPSec 3DES
IPX/
AT/
DEC
Plus
IPX/
AT/
DEC/
FW/ IDS PlusAnalog DID for Cisco 2600 and Cisco 3600 Series Routers
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
High Performance Gatekeeper
No
Yes
Yes
No
No
No
No
No
MGCP CAS PBX and AAL2 PVC1
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
MGCP Basic CLASS and Operator Services
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
SIP Diversion Header Implementation for Redirecting Number
Yes
Yes
Yes
Yes
Yes
Yes
No
No
SIP Gateway support for Third Party Call Control
Yes
Yes
Yes
Yes
Yes
Yes
No
No
SIP User Agent MIB
Yes
Yes
Yes
Yes
Yes
Yes
No
No
WT-2750 Multipoint Broadband Wireless System
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
1 AAL2 PVC is not implemented in this release.
Table 3, Part 2 Feature List by Feature Set for the Cisco 2600 Series
prise
Plus
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 56Analog DID for Cisco 2600 and Cisco 3600 Series Routers
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
High Performance Gatekeeper
Yes
No
No
No
No
No
No
No
MGCP CAS PBX and AAL2 PVC1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
MGCP Basic CLASS and Operator Services
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SIP Diversion Header Implementation for Redirecting Number
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SIP Gateway support for Third Party Call Control
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SIP User Agent MIB
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
WT-2750 Multipoint Broadband Wireless System
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
1 AAL2 PVC is not implemented in this release.
New and Changed Information
The following sections list the new hardware and software features supported by the Cisco 2600 series for Release 12.1(5) XM7.
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM7
There are no new hardware and software features in the Cisco 2600 series for Cisco IOS Release 12.1(5) XM7.
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM6
Cisco IOS Release 12.1(5) XM6 does not support the Cisco 2600 series .
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM5
Cisco IOS Release 12.1(5) XM5 does not support the Cisco 2600 series .
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM4
There are no new hardware and software features in the Cisco 2600 series for Cisco IOS Release 12.1(5) XM4.
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM3
There are no new hardware and software features in the Cisco 2600 series for Cisco IOS Release 12.1(5) XM3.
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM2
There are no new hardware and software features in the Cisco 2600 series for Cisco IOS Release 12.1(5) XM2.
New Hardware and Software Features in Cisco IOS Release 12.1(5) XM1
There are no new hardware and software features in the Cisco 2600 series for Cisco IOS Release 12.1(5) XM1.
New Hardware Features in Cisco IOS Release 12.1(5) XM
The following new hardware features are supported by the Cisco 2600 series for Cisco IOS Release 12.1(5)XM.
2-Port Analog DID Voice Interface (VIC2-DID)
This Direct Inward Dial (DID) voice interface enables a Cisco 2600 series router to provide DID service to extensions on a PBX.
Wireless Network Module
The NM-WMDA wireless network module installs in the network module slot of a Cisco 2600 series router. Installing a wireless network module enables the Cisco 2600 series router to act as a subscriber unit (SU) in a point-to-multipoint wireless network. It is configured through the router's system console or via the CiscoView network management system. The network module provides the control and data interface between the Cisco 2600 series digital motherboard and the radio frequency (RF) subsystem in the wireless transverter. It also provides the up/down conversion from baseband to intermediate frequency (IF). One network module supports one or two wireless transverters (main and diversity).
Microcode software images ship in Flash memory along with the system software image. When the router starts, the system software unpacks the microcode software bundle and loads the proper software on all the interface linecards.
It is possible to use a later version of microcode software than the one shipped with the Cisco IOS software from the factory. The microcode software in Flash memory is mapped to the linecards. Unless you fully understand how Cisco IOS software uses microcode software, it is important to keep the factory configuration.
The multipoint wireless modem card requires external microcode software. Information about this microcode software is available (with a Cisco.com login) at:
http://www.cisco.com/cgi-bin/tablebuild.pl/rsu.
For further information regarding the network module, refer to the Cisco Network Modules Hardware Installation Guide (for Cisco 2600 series routers) for detailed installation instructions, and the Software Configuration Guide (for Cisco 2600 series routers) for an overview of network module configuration procedures and information on configuring specific network modules.
New Software Features in Cisco IOS Release 12.1(5) XM
The following new software features are supported by the Cisco 2600 series for Cisco IOS Release 12.1(5)XM.
Analog DID for Cisco 2600 and Cisco 3600 Series Routers
Direct Inward Dialing (DID) is a service offered by telephone companies that enables callers to dial directly to an extension on a Private Branch Exchange (PBX) without the assistance of an operator or automated call attendant. This service makes use of DID trunks, which forward only the last three to five digits of a phone number to the PBX. If, for example, a company has a PBX with extensions 555-1000 to 555-1999, and a caller dials 555-1234, the local CO would forward 234 to the PBX. The PBX would then ring extension 234. This entire process is transparent to the caller.
When this feature is configured, a voice-enabled Cisco 2600 and Cisco 3600 series router can receive calls from a DID trunk and connect them to the appropriate extensions.
High Performance Gatekeeper
The High Performance Gatekeeper feature provides the network administrator the ability to identify H.323 traffic and apply appropriate policies.
The High Performance Gatekeeper feature is implemented on Cisco IOS software and enables a network manager to:
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MGCP CAS PBX and AAL2 PVC
The MGCP CAS PBX and AAL2 PVC feature set extends the earlier Simple Gateway Control Protocol (SGCP) CAS and AAL2 support onto the merged SGCP/MGCP software base. These features enable various service provider solutions, including Integrated Access, IP PBX, Residential Cable Access, and Voice over DSL. The added AAL2 PVC features are not implemented in this release.
MGCP Basic CLASS and Operator Services
The MGCP Basic CLASS and Operator Services feature is a set of calling features, sometimes called "custom calling" features, that use MGCP to transmit voice, video, and data over the IP network. These features are usually found in circuit-based networks. MGCP BCOS brings them to the Cisco IOS gateways on packet-based networks.
The MGCP BCOS software supports MGCP 0.1 and the earlier protocol versions Simple Gateway Control Protocol (SGCP) 1.1 and 1.5.
The following MGCP BCOS features are available on Residential Gateways (RGWs):
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•
•
•
•
•
•
•
•
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The following two features can be run as RGW or trunking gateway (TGW) features:
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SIP Diversion Header Implementation for Redirecting Number
The SIP Diversion Header Implementation for Redirecting Number feature provides support for a new Session Initiation Protocol (SIP) header field; Call Control (CC)-Diversion. The CC-Diversion header field enables the SIP gateway to pass call control redirecting information during the call setup. Call control redirection is the redirection of a call based on a subscriber service such as call forwarding, and is typically used for Unified Messaging and voice mail services to identify the recipient of a message. SIP gateway support has also been enhanced to process a SIP 3xx Redirection response after the receipt of a SIP 18x Information response. More information about this feature is available at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121rel/sipcfs/hennigan.htm
More information about the Session Initialtion Protocol Gateway Call Flows is available at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121rel/sipcfs/
SIP Gateway Support for Third Party Call Control
The SIP Gateway Support for Third-Party Call Control feature enables one endpoint (for example, a call controller) to create, modify, or terminate calls between other endpoints via delayed media negotiation. A delayed media negotiation is one where the Session Description Protocol (SDP) information is not completely advertised in the initial call setup. Third-party call control is often used for operator services (creating a call connecting two parties together) and conferencing. SIP gateway support has also been enhanced to allow SIP gateways to route using a Fully Qualified Domain Name (FQDN) in addition to using an IP address. More information about this feature is available at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121rel/sipcfs/caribou.htm
More information about the Session Initialtion Protocol Gateway Call Flows is available at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121rel/sipcfs/
SIP User Agent MIB
The SIP User Agent MIB adds the ability to manage a Session Initiation Protocol (SIP) network via an SNMP-based network management platform.
WT-2750 Multipoint Broadband Wireless System
The Cisco broadband fixed wireless point-to-multipoint system is an integrated solution consisting of one headend and multiple subscriber units. The fixed wireless point-to-multipoint subscriber unit is designed to receive radio frequency (RF) signals from the headend. It also transmits a return signal to the headend. This return signal is a point-to-point signal, so a properly installed subscriber antenna must be correctly oriented with the headend antenna to which it is transmitting. For more information about the fixed wireless point-to-multipoint headend feature, see Point-to-Multipoint Support for the Cisco uBR7200 Series Universal Broadband Router.
Important Notes
The following sections contain important notes about Cisco IOS Release 12.1(5) XM7 that can apply to the Cisco 2600 series.
Non-Software Caveats - UNII Configuration
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A shift in frequency-locked loop (FLL) control voltage causes a 24-MHz reference signal drift on the wireless multipoint network module with diversity (NM-WMDA). As a result, a large-frequency offset occurs in unlicensed national information infrastructure (UNII) outdoor unit (ODU) receive (Rx) and transmit (Tx) oscillators, which are locked on to the 24 MHz reference coming from the NM-WMDA. That causes signal-to-noise ratio (SNR) degradations for both upstream and downstream signals.
The SNR degradation is insignificant in multichannel multipoint distribution service (MMDS) links. However, In UNII links the degradation can be significant, since the local oscillator (LO) multiplication ratio is much higher for UNII frequencies.
Workaround for UNII: The shift in the 24 MHz reference must be minimized by imposing a maximum 2 ms continuous burst size. This is achieved by not using the following slow upstream modulation profiles:
–
–
In addition to eliminating slow upstream modulation profiles, it is also necessary to set the maximum packet concatenation size to 1522 bytes for all supported modulation profiles. This is done by setting sub-TLV 6 (Maximum Upstream Channel Transmit Burst Configuration Setting), which is part of TLV 4 (Class of Service Configuration Setting), to 1522, which is the maximal number of bytes that can be concatenated. Note that the "Maximum Upstream Channel Transmit Burst Configuration Setting" has to be set for the customer-premise equipment (CPE) to be operational, so the above-mentioned modification is minimal.
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.
MIBs
Old Cisco Management Information Bases (MIBs) will be replaced in a future release. Currently, OLD-CISCO-* MIBs are being converted 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 4.
Note
Caveats
Caveats describe unexpected behavior or defects 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(5) XM7, see this "Caveats" section as well as Caveats for Cisco IOS Release 12.1 and Caveats for Cisco IOS Release 12.1T. These documents list severity 1 and 2 caveats and select severity 3 caveats for Cisco IOS Releases 12.1 and 12.1T and are located on Cisco.com and the Documentation CD-ROM.
All caveats in Cisco IOS Release 12.1(5)T are also in Cisco IOS Release 12.1(5) XM7.
Caveat numbers and brief descriptions are listed in Table 5. For details about a particular caveat, go to Bug Toolkit at:
http://www.cisco.com/kobayashi/bugs/bugs.html
To access this location, you must have an account on Cisco.com. For information about how to obtain an account, go to the "Feature Navigator" section.
Note
http://www.cisco.com/support/bugtools.
Open Caveats — Cisco IOS Release 12.1(5) XM7
There are no open caveats specific to Cisco IOS Release 12.1(5) XM7 that require documentation in the release notes.
Resolved Caveats — Cisco IOS Release 12.1(5) XM7
All the caveats listed in Table 5 are open in Cisco IOS Release 12.1(5) XM7. This table lists only severity 1 and 2 caveats and select severity 3 caveats.
Open and Resolved Caveats for Release 12.1(5) XM6
Cisco IOS Release 12.1(5) XM6 does not support the Cisco 2600 series .
Open and Resolved Caveats for Release 12.1(5) XM5
Cisco IOS Release 12.1(5) XM5 does not support the Cisco 2600 series .
Open Caveats for Release 12.1(5) XM4
All the caveats listed in Table 6 are open in Cisco IOS Release 12.1(5) XM4. This table lists only severity 1 and 2 caveats and select severity 3 caveats.
Table 6 Open Caveats for Release 12.1(5)XM4
CSCdt61467
Need a way to change the default value of VPDN parameters
Resolved Caveats for Release 12.1(5) XM4
All the caveats listed in Table 7 are resolved in Cisco IOS Release 12.1(5) XM4. This table lists only severity 1 and 2 caveats and select severity 3 caveats.
Open Caveats for Release 12.1(5) XM3
All the caveats listed in Table 6 are open in Cisco IOS Release 12.1(5) XM3. This table lists only severity 1 and 2 caveats and select severity 3 caveats.
Resolved Caveats for Release 12.1(5) XM3
All the caveats listed in Table 7 are resolved in Cisco IOS Release 12.1(5) XM3. This table lists only severity 1 and 2 caveats and select severity 3 caveats.
Open Caveats for Release 12.1(5) XM2
This section documents possible unexpected behavior by Cisco IOS Release 12.1(5) XM2 and describes only severity 1 and 2 caveats and select severity 3 caveats.
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During brief periods of high-traffic activity on the subscriber-unit router and with the router's CPU overloaded, the radio "link-metrics" (continuous codeword error statistics) might not be collected because network-packet traffic has priority over the radio "link-metrics" on the CPU. This might cause the "link-metrics" tables to show zeros only and/or error messages to be generated. There is no workaround.
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The system will accept a statistic parameter for a second antenna even though it is a single-antenna system.
Workaround: Disregard data for the second antenna.
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When the PPP Password Authentication Protocol (PAP)-password validation fails—that is, when the PPP PAP password is configured incorrectly—a slow memory leak occurs. There is no workaround.
Closed and Resolved Caveats for Release 12.1(5) XM2
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(5) XM2. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
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Cisco IOS software contains a flaw that permits the successful prediction of TCP Initial Sequence Numbers.
This vulnerability is present in all released versions of Cisco IOS software running on Cisco routers and switches. It only affects the security of TCP connections that originate or terminate on the affected Cisco device itself; it does not apply to TCP traffic forwarded through the affected device in transit between two other hosts.
To remove the vulnerability, Cisco is offering free software upgrades for all affected platforms. The defect is described in DDTS record CSCds04747.
Workarounds are available that limit or deny successful exploitation of the vulnerability by filtering traffic containing forged IP source addresses at the perimeter of a network or directly on individual devices.
This notice will be posted at http://www.cisco.com/warp/public/707/ios-tcp-isn-random-pub.shtml.
This caveat is resolved in Cisco IOS Release 12.1(5)XM2.
Open Caveats for Release 12.1(5) XM1
The caveats listed in this section are open in Cisco IOS Release 12.1(5) XM1.
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GKTMP does not retry the backend server for five minutes when the connection is dropped due to link integrity or stress conditions. The problem may occur because of the backend server not being able to keep up with the gatekeeper(s) it is serving. The gatekeeper (GK) will send all requests to the server but because of a slow link or processor capacity, the server does not respond in time. In this case, the GK may mark the server as unreachable and drop the connection. Once the connection is dropped it will not be re-established for another five minutes if there were static triggers configured by the CLI.
Symptom: Server connection is dropped and is not retried for another five minutes.
Workaround: None. Try to match server capacity to process requests with the number and capacities of the gatekeepers it is serving.
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The system will accept a statistic parameter for a second antenna even though it is a single-antenna system.
Workaround: Disregard data for the second antenna.
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During brief periods of high-traffic activity on the subscriber-unit router and with the router's CPU overloaded, the radio "link-metrics" (continuous codeword error statistics) might not be collected because network-packet traffic has priority over the radio "link-metrics" on the CPU. This might cause the "link-metrics" tables to show zeros only and/or error messages to be generated. There is no workaround.
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FXS VIC and DID VIC fail to recognize on-hook.
Closed and Resolved Caveats for Release 12.1(5) XM1
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(5) XM1. This section describes only severity 1 and 2 caveats and select severity 3 caveats. All caveats that are closed and resolved in Release 12.1(5)T are also closed and resolved in Release 12.1(5) XM1.
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A Cisco 2600 series router Signaling Link Terminal (SLT) produces the following message on the console:
* <timestamp>: %PQUICC=1-TOOSMALL: PQUICC(0/0), packet was less than 2 bytesAs a result of this unexpected behavior, the SS7 link goes in and out of service until the SLT is reloaded. There is no workaround.
This caveat has been resolved in Cisco IOS Release 12.1(5)XM1.
Open Caveats for Release 12.1(5) XM
The caveats listed in this section are open in Cisco IOS Release 12.1(5) XM.
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During brief periods of high-traffic activity on the subscriber-unit router and with the router's CPU overloaded, the radio "link-metrics" (continuous codeword error statistics) might not be collected because network-packet traffic has priority over the radio "link-metrics" on the CPU. This might cause the "link-metrics" tables to show zeros only and/or error messages to be generated. There is no workaround.
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The system will accept a statistic parameter for a second antenna even though it is a single-antenna system.
Workaround: Disregard data for the second antenna.
Resolved Caveats for Release 12.1(5) XM
There are no open caveats specific to Cisco IOS Release 12.1(5) XM that require documentation in the release notes.
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 Cisco.com 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(5) XM7 and are located on Cisco.com and the Documentation CD-ROM:
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On Cisco.com, 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
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes
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To reach these documents, refer to the Service & Support section at this path on Cisco.com:
Technical Documents
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On Cisco.com, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: 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: Release Notes: Caveats: Caveats for Cisco IOS Release 12.1
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http://www.cisco.com/support/bugtools.
Platform-Specific Documents
These documents are available for the Cisco 2600 series on Cisco.com and the Documentation CD-ROM:
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On Cisco.com, 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
Feature Modules
Feature modules describe new features supported by Cisco IOS Release 12.1(5) XM7 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 Cisco.com, beginning under the Service & Support heading:
Technical Documents:Documentation Home Page:Cisco IOS Software Configuration:Cisco IOS Release 12.1:New Feature Documentation:12.1-Based Limited Lifetime Releases:New Features in 12.1 X Releases:New Features in Release 12.1 XM:New Features in Release 12.1(5)XM
To reach the feature modules on the Documentation CD-ROM, follow this path:
Cisco Product Documentation:Cisco IOS Software Configuration:Cisco IOS Release 12.1:New Feature Documentation:12.1-Based Limited Lifetime Releases:New Features in 12.1 X Releases:New Features in Release 12.1 XM:New Features in Release 12.1(5)XM
Feature Navigator
Feature Navigator is a web-based tool that enables you to quickly determine which Cisco IOS software images support a particular set of features and which features are supported in a particular Cisco IOS image.
Feature Navigator is available 24 hours a day, 7 days a week. To access Feature Navigator, you must have an account on Cisco.com. If you have forgotten or lost your account information, e-mail the Contact Database Administration group at cdbadmin@cisco.com. If you do not have an account on Cisco.com, go to http://www.cisco.com/register and follow the directions to establish an account.
To use Feature Navigator, you must have a JavaScript-enabled web browser such as Netscape 3.0 or later, or Internet Explorer 4.0 or later. Internet Explorer 4.0 always has JavaScript enabled. To enable JavaScript for Netscape 3.x or Netscape 4.x, follow the instructions provided with the web browser. For JavaScript support and enabling instructions for other browsers, check with the browser vendor.
Feature Navigator is updated when major Cisco IOS software releases and technology releases occur. It contains feature information about mainline-, T-, S-, and P-trains. You can access Feature Navigator at the following URL:
http://www.cisco.com/go/fn
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 Cisco.com and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set.
On Cisco.com, 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
On the Documentation CD-ROM at:
Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
Release 12.1 Documentation Set
Table 10 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.
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On Cisco.com, 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
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Obtaining Documentation
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com. Translated documentation can be accessed at http://www.cisco.com/public/countries_languages.shtm.
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. Therefore, it is probably 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.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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