Cisco 1700 Series - Cisco IOS Release 12.2(8)YL
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Table Of Contents
Release Notes for the Cisco 1700 Series Routers for Cisco IOS Release 12.2(8)YL
Determining the Software Version
Upgrading to a New Software Release
New Software Features in Release12.2(8)YL
Software Based LZ Compression with Hardware Encryption
Voice Support on Digital T1/E1 Interfaces
New Software Features in Release 12.2(8)T
Maximum Number of Store and Forward Fax Calls
Additional Restriction Information
T1/E1 VWIC Support on Cisco 1751 and 1760 Routers
Fan Operation in Cisco 1700 Series Routers
Flash defaults to Flash:1 on Multipartition Flash
Peak Cell Rate and Sustainable Cell Rate Values
Using Dialer Interface with MLPPPoATM
Resolved Caveats - Release 12.2(8)YL1
Open Caveats - Release 12.2(8)YL
Resolved Caveats - Release 12.2(8)YL
Obtaining Technical Assistance
Release Notes for the Cisco 1700 Series Routers for Cisco IOS Release 12.2(8)YL
August 1, 2003
These release notes describe new features and significant software components for the Cisco 1700 series routers that support Cisco IOS Release 12.2 T, up to and including Release 12.2(8)YL1. These release notes are updated as needed to describe new memory requirements, new features, new hardware support, software platform deferrals, microcode or modem code changes, related document changes, and any other important changes. Use these release notes with the Cross-Platform Release Notes for Cisco IOS Release 12.2 T located on CCO and the Documentation CD.
For a list of the software caveats that apply to Release 12.2(8)YL1, refer to the section "Caveats" and to the online Caveats for Cisco IOS Release 12.2 T document. The caveats document is updated for every 12.2 T maintenance release and is located on Cisco Connection Online (CCO) and the Documentation CD.
Contents
These release notes discuss the following topics:
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Obtaining Technical Assistance
System Requirements
This section describes the system requirements for Release 12.2(8)YL1 and includes the following sections:
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Memory Requirements
This section describes the memory requirements for the Cisco IOS feature sets supported by Cisco IOS Release 12.2(8)YL1 on the Cisco 1700 series routers.
Hardware Supported
Cisco IOS Release 12.2(8)YL1 supports the following Cisco 1700 series routers:
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The Cisco 1710, 1720, and 1721routers run data images only. The Cisco 1750, 1750-2V, and 1750-4V routers run data or data-and-voice images, providing analog voice support. Cisco 1751, 1751-V, 1760, and 1760-V routers run data or data-and-voice images, providing digital and analog voice support.
For detailed descriptions of new hardware features and which features are supported on each router, see the "New and Changed Information" section. For descriptions of existing hardware features and supported modules, see the hardware installation guides, configuration and command reference guides, and additional documents specific to Cisco 1700 series routers, which are available on Cisco.com and the Documentation CD at the following location:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1700/index.htmThis URL is subject to change without notice. If it changes, point your web browser to CCO, and click the following path:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 1700 Series Routers: <platform_name>Determining the Software Version
To determine the version of Cisco IOS software currently running on your Cisco 1700 series router, log in to the router and enter the show version EXEC command. The following sample output from the show version command indicates the version number on the second output line:
router> show versionCisco Internetwork Operating System SoftwareIOS (tm) C1700 Software (C1700-Y-MZ), Version 12.2(8)YL1, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)Synched to technology version 12.2(5.4)TUpgrading to a New Software Release
For general information about upgrading to a new software release, see Software Installation and Upgrade Procedures located at: http://www.cisco.com/warp/public/130/upgrade_index.shtml.
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 12.2(8)YL1 supports the same feature sets as Releases 12.2 and 12.2(8)T, but Release 12.2(8)YL1 includes new features supported by the Cisco 1700 series routers.
Caution
Table 2 through Table 6 list the features and feature sets supported in Cisco IOS Release 12.2(8)YL1:
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The tables use the following conventions:
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New and Changed Information
The following sections list the new hardware and software features supported by the Cisco 1700 series routers for Release 12.2.(8)YL.
New Software Features in Release12.2(8)YL
The following sections describe the new software features supported by the Cisco 1700 series routers for Release 12.2.(8)YL.
Software Based LZ Compression with Hardware Encryption
This feature enables the Cisco 1700 Series routers to support Layer 3 compression (through use of the Lempel-Ziv, or LZ, standard) in software with hardware-based IPSec encryption. Previously, this combination could not be supported.
Benefits
One benefit of this feature is that, through LZ compression, encrypted packets being transmitted are decreased in size, resulting in reduced WAN bandwidth demands. This allows VPNs to be supported more effectively in regions of the world that only utilize low-speed WAN links.
Additionally, by supporting LZ compression with hardware encryption, greater processing power is used for the encryption process, thereby increasing performance. By combining LZ compression with hardware encryption, customers can realize high performance VPNs with reduced bandwidth demands.
Voice Support on Digital T1/E1 Interfaces
Release 12.2(8)YL1 adds voice support to digital T1/E1 interfaces. All the voice functionality that has been supported on analog interfaces (Release 12.2(4)YB) will now be supported on digital T1/E1 interfaces.
The features that are included in this voice support are the following:
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See the following Cisco IOS release notes for further information regarding these features:
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New Software Features in Release 12.2(8)T
For information regarding the features supported in Cisco IOS Release 12.2 T, refer to the Cross-Platform Release Notes and New Feature Documentation links at the following location on CCO:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/xprn122t/index.htm
This URL is subject to change without notice. If it changes, point your web browser to CCO, and click the following path:
Service & Support: Technical Documents: Cisco IOS Software: Release 12.2: Release Notes: Cross-Platform Release Notes (Cisco IOS Release 12.2T)
Limitations
Data Compression
Packets of size less than 128 bytes or greater than 5000 bytes will not be compressed. Also, all cases of degenerative compression, where the packet is actually expanded rather than compressed, will be discarded, and the original packets will be forwarded.
Maximum Number of Store and Forward Fax Calls
The Cisco 1751 router supports 30 voice calls and the Cisco 1760 router supports 48 voice calls. However, these routers might not be able support more than 10 store and forward fax calls due to memory constraints.
Additional Restriction Information
See the following Cisco IOS release notes for further information regarding limitations and restrictions:
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Important Notes
The following sections contain important notes about Cisco IOS Release 12.2.(8)YL that can apply to the Cisco 1700 series routers. (Also, see the "Caveats" section.)
T1/E1 VWIC Support on Cisco 1751 and 1760 Routers
The Cisco 1751 and 1760 routers no longer need a voice image to support data applications on T1/E1 VWICs.
Fan Operation in Cisco 1700 Series Routers
Cisco 1760 and 1760-V router fans are always on, and Cisco 1710 routers do not contain a fan. However, the fans in Cisco 1720, 1721, 1750, and 1751 routers stay off until thermally activated.
Flash defaults to Flash:1 on Multipartition Flash
When using a multipartition flash card, the various flash partitions are referred to as "flash:1:", "flash:2:", etc. If you specify only "flash" in a multipartition flash, the parser assumes "flash:1:." For example, if you enter show flash all the parser defaults to "show flash:1: all" and only the flash information for the first partition displays. To see information for all flash partitions, enter show flash ?. This will list all of the valid partitions. Then enter show flash:xx: all on each valid partition.
Peak Cell Rate and Sustainable Cell Rate Values
On Cisco 1700 routers, specify the Peak Cell Rate (PCR) and Sustainable Cell Rate (SCR) as multiples of 32 Kbps. Other rates are treated as the next lower value of a multiple of 32. For example, an entered PCR value of 150 is considered 128.
Using the boot flash Command
Booting a Cisco 1700 series router with the commands boot flash or boot system flash results in unpredictable behavior. To work around this problem, be sure to enter a colon (:) following both commands (for example, boot flash: or boot system flash:).
Using Dialer Interface with MLPPPoATM
This feature is not supported on the Cisco 1700 series platforms. Please use the Virtual Template interface instead.
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, and severity 3 caveats are the least serious of these three severity levels.
Caveats in Release 12.2 T are also in Release 12.2(8)YL1. For information on caveats in Cisco IOS Release 12.2 T, refer to the Caveats for Cisco IOS Release 12.2 T document. For information on caveats in Cisco IOS Release 12.2, refer to the Caveats for Cisco IOS Release 12.2 document. These documents list severity 1 and 2 caveats, and are located on CCO and the Documentation CD.
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Resolved Caveats - Release 12.2(8)YL1
Cisco IOS Release 12.2(8)YL1 is a rebuild release for Cisco IOS Release 12.2(8)YL. This section describes unexpected behavior that is fixed in Release 12.2(8)YL1.
Miscellaneous
CSCdz71127
Cisco routers and switches running Cisco IOS software and configured to process Internet Protocol version 4 (IPv4) packets are vulnerable to a Denial of Service (DoS) attack. A rare sequence of crafted IPv4 packets sent directly to the device may cause the input interface to stop processing traffic once the input queue is full. No authentication is required to process the inbound packet. Processing of IPv4 packets is enabled by default. Devices running only IP version 6 (IPv6) are not affected. A workaround is available.
Cisco has made software available, free of charge, to correct the problem.
This advisory is available at
http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml
CSCea02355
Cisco routers and switches running Cisco IOS software and configured to process Internet Protocol version 4 (IPv4) packets are vulnerable to a Denial of Service (DoS) attack. A rare sequence of crafted IPv4 packets sent directly to the device may cause the input interface to stop processing traffic once the input queue is full. No authentication is required to process the inbound packet. Processing of IPv4 packets is enabled by default. Devices running only IP version 6 (IPv6) are not affected. A workaround is available.
Cisco has made software available, free of charge, to correct the problem.
This advisory is available at
http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml
Open Caveats - Release 12.2(8)YL
This section describes unexpected behavior in Release 12.2.(8)YL.
Miscellaneous
CSCdx19900
Packet greater than 5000 bytes fails when SW compression with HW encryption is done.
CSCdx32291
Crypto console error generated when tunnel is initiated via EM module.
CSCdx63850
Broadcast address is being sent as MAC Address in the Cisco 1720, 1721 and 1750 routers when an Ethernet WIC is in slot 1. When there is a one-port Ethernet WIC (WIC-1E) in slot 1 and a TLV 4 EEPROM WIC, like an ADSL WIC, in slot 0, the MAC Address of the Ethernet interface is incorrectly set to the broadcast address ffff.ffff.ffff. The work-around for this problem is to place the Ethernet WIC in slot 0 only.
CSCdx64971
IPSec does not work when set pfs group# is in the configuration. For example:
crypto ap mymap1 11 ipsec-isakmpset peer 10.0.0.1set security-association level per-hostset transform-set 1+5+8set pfs group2match address 101The work-around for this problem is to remove set pfs group# from the configuration.
CSCdx90637
A Cisco 1700 Series router with a WIC-2AM (2-port asynchronous interface) may reload while issuing the ipx routing CLI. The work-around is to configure ipx routing without running traffic.
CSCdy03960
When configuring MLP, the Cisco 1720 router CPEs crash when an interface is entered into a multilink group. No work-around is available, but it is known that the problem will not occur when using images from Cisco IOS Release 12.2(4)XL.
CSCdy05964
The Cisco 1760 router crashes at bootup if both VIC-2FXO-EU abd VIC-2FXO-M3 interface cards are inserted. Additionally, having the VIC-2FXO-EU card inserted alone will cause a traceback at bootup. There is no work-around.
CSCdy07777
A traceback appears on the router when MGCP calls are made with RSVP, causing the call to fail. This happens when using Call Admission Control with RSVP for MGCP calls. A work-around for this problem is to create a dummy dial-peer as follows:
dial-peer voice 1000 voipreq-qos guaranteed-delayCSCin10786
Crash observed when T1 card is in slot 0 and rqnt is sent.
CSCin11036
IVR application is not played in MGCP when sent through CRCX.
CSCin11039
GW uses Cisco fax-relay mode if fx=gw is used in LCO.
Resolved Caveats - Release 12.2(8)YL
This section describes unexpected behavior that is fixed in Release 12.2(8)YL.
Miscellaneous
CSCin09241
The "IPV4_ADDR" identity only is supported.
CSCdw25878
When using SIP, the URL name in the terminating message is not the same as the URL name in the originating message. An IP address shows up instead.
CSCdw92918
Using "bvi/irb/network-extension mode", unable to ping server.
CSCdx47760
If an IP Address is acquired through DHCP and the interface is subsequently shut down, the IP address is not assigned to the Fast Ethernet interface after you enter the following command for the interface: ip address a.b.c.d mask. This occurs on all 1700 platforms.
CSCdy03472
Cisco 1700 Series router with ADSL WIC fails to boot due to insufficient memory.
CSCdy13841
After "service-policy output x" is configured on CE's outbound interface to PE, multi-vrf can only ping the first VRF and the pings to remaining VRFs will fail. Problem remains even after "service-policy output x" is removed.
Related Documentation
The following sections describe the documentation available for the Cisco 1700 series routers. Typically, 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.
Use these release notes with the documents listed in the following sections:
Release-Specific Documents
The following documents are specific to Release 12.2 and apply to Release 12.2(8)YL1. They are located on Cisco.com and the Documentation CD (under the heading Service & Support):
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Technical Documents: Cisco IOS Software: Release 12.2: Release Notes: Cisco 1700 Series Routers: Cisco 1700 Series - Release Notes for Release 12.2(8)YJ
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Technical Documents: Cisco IOS Software: Release 12.2: Release Notes: Cisco IOS Release 12.2 T
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Technical Documents: Product Bulletins
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Technical Documents: Cisco IOS Software: Release 12.2: Caveats
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Platform-Specific Documents
Hardware installation guides, configuration and command reference guides, and additional documents specific to Cisco 1700 series routers are available on Cisco.com and the Documentation CD at the following location:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1700/index.htm
This URL is subject to change without notice. If it changes, point your web browser to CCO, and click the following path:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 1700 Series Routers: <platform_name>
Obtaining Documentation
These sections explain how to obtain documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at this URL:
Translated documentation is available at this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped 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 through an annual subscription.
Ordering Documentation
You can order Cisco documentation in these 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
You can submit comments electronically on Cisco.com. In the Cisco Documentation home page, click the Fax or Email option in the "Leave Feedback" section at the bottom of the page.
You can e-mail your comments to bug-doc@cisco.com.
You can submit your comments by mail by using the response card behind the front cover of your document or by writing to the following address:
Cisco Systems
Attn: 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 online documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.
Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a broad range of features and services to help you with these tasks:
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If you want to obtain customized information and service, you can self-register on Cisco.com. To access Cisco.com, go to this URL:
Technical Assistance Center
The Cisco Technical Assistance Center (TAC) is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Cisco TAC inquiries are categorized according to the urgency of the issue:
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The Cisco TAC resource that you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
You can use the Cisco TAC Web Site to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to this URL:
All customers, partners, and resellers who have a valid Cisco service contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to this URL to register:
http://www.cisco.com/register/
If you are a Cisco.com registered user, and you cannot resolve your technical issues by using the Cisco TAC Web Site, you can open a case online by using the TAC Case Open tool at this URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. These classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). When you call the center, please have available your service agreement number and your product serial number.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
Copyright © 2002, Cisco Systems, Inc.
All rights reserved.
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