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Table Of Contents
Release Notes for the Cisco 10000 Series ESR
for Cisco IOS Release 12.0(21)SX1Upgrading to a New Software Release
Upgrading Cisco IOS Software from Earlier Cisco IOS Releases
New and Changed Features in Cisco IOS Release 12.0(21)SX1
Core and Intake Critical Temperature Thresholds
New Features in Cisco IOS Release 12.0(21)SX
Cisco 24-Port E1 Line Card Description
Cisco 10000 ESR MIB Enhancements
Cisco 10000 Series ESR Software Features
Controlling the Rate of Logging Messages
Testing Performance of High-Speed Interfaces
Resolved Caveats in Cisco IOS Release 12.0(21)SX1
Resolved Caveats in Cisco IOS Release 12.0(21)SX
Obtaining Technical Assistance
Release Notes for the Cisco 10000 Series ESR
for Cisco IOS Release 12.0(21)SX1
April 8, 2002
These release notes provide information about Cisco IOS Release 12.0(21)SX1 running on the Cisco 10000 Series Edge Services Router (ESR). These release notes are identical to the release notes for Cisco IOS Release 12.0(21)SX, but were updated to:
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Include fixes for caveats discovered and resolved since the release of Cisco IOS Release 12.0(21)SX (see the "Resolved Caveats in Cisco IOS Release 12.0(21)SX1" section).
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These release notes are updated as needed to describe new features, memory requirements, hardware support, software platform deferrals, and changes to the microcode and related documents.
Cisco IOS Release 12.0(21)SX1 is based on the following previous releases:
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For a list of the software caveats that apply to Cisco IOS Release 12.0(21)SX1, see the "Resolved Caveats in Cisco IOS Release 12.0(21)SX1" section.
Use these release notes in conjunction with the Release Notes for Cisco IOS Release 12.0 S and the cross-platform Release Notes for Cisco IOS Release 12.0.
To review the release notes for Cisco IOS Release 12.0 S, go to www.cisco.com and click Technical Documents. Select Release 12.0 from the Cisco IOS Software drop-down menu. Then click Release Notes > Cisco 12000 Series Routers > Cisco 7000 Family and 12000 Series—Release Notes for Release Cisco IOS 12.0 S.
To review the cross-platform Release Notes for Cisco IOS Release 12.0, go to www.cisco.com and click Technical Documents. Select Release 12.0 from the Cisco IOS Software drop-down menu. Then click Release Notes > Cross-Platform Release Notes.
Contents
This document contains the following sections:
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Upgrading to a New Software Release
Caution
For specific information about upgrading your Cisco 10000 series ESR to a new software release, see the Cisco 10000 Series ESR Software Configuration Guide.
For general information about upgrading to a new software release, see the product bulletin Cisco IOS Upgrade Ordering Instructions located at:
http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/957_pp.htm
For additional information about ordering software, refer to the Cisco IOS Software Releases URL:
http://www.cisco.com/warp/public/cc/pd/iosw/iore/index.shtml
Upgrading Cisco IOS Software from Earlier Cisco IOS Releases
Caution
Before you upgrade to Cisco IOS Release 12.0(21)SX1, save your current configuration file. If you decide to re-install Release 12.0(14)SL, or an earlier release, you must also re-install the configuration file associated with that release. This is because some BGP configuration-file entries in Release 12.0(21)SX1 are not compatible with Release 12.0(14)SL or earlier releases.
System Requirements
For Cisco IOS Release 12.0(21)SX1 to run properly on the Cisco 10000 series ESR, the Performance Routing Engine (PRE) installed in the chassis must be the PRE1 version (Part Number ESR-PRE1). To verify the currently installed PRE in the chassis, invoke the show version command.
New and Changed Features in Cisco IOS Release 12.0(21)SX1
There are no new features in Cisco IOS Release 12.0(21)SX1. The sections that follow describe the features that have changed in this release:
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Auto-Shutdown Feature
In Cisco IOS Release 12.0(21)SX, the ESR shut down automatically in any of the following instances:
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Beginning with Cisco IOS Release 12.0(21)SX1, the following changes have been made to the auto-shutdown feature:
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Core and Intake Critical Temperature Thresholds
The ESR core and intake critical temperature threshold values have changed. When the ESR temperature exceeds one of these thresholds, the ESR generates a critical alarm and shuts down automatically if it is configured to do so (see the following section, "facility-alarm Command").
The new critical temperature thresholds (in Celsius) are as follows:
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facility-alarm Command
A new keyword (critical exceed-action shutdown) allows you to enable or disable the auto-shutdown feature on the ESR. Previously, auto-shutdown was enabled by default. When auto-shutdown is enabled, the ESR shuts down automatically when its core or intake temperature exceeds the critical temperature threshold for 2 minutes.
You can also use this command to set the temperature thresholds at which the ESR generates a major or minor alarm, or to disable those alarms.
The command format is as follows:
Router(config)# [ no ] facility-alarm { intake-temperature | core-temperature } { major [##] | minor [##] | critical exceed-action shutdown }Use the no format of the command to turn off the facility-alarm action (see "Command Examples").
Syntax Description
Command Examples
The following command configures the Cisco 10000 series ESR to shut down automatically when its core temperature exceeds the critical temperature threshold (85°C) for 2 minutes:
Router(config)# facility-alarm core-temperature critical exceed-action shutdownThe following command disables the auto-shutdown feature for the core critical temperature threshold (which means the ESR does not shut down when the core critical temperature is exceeded for 2 minutes):
Router(config)# no facility-alarm core-temperature critical exceed-action shutdownThe following command configures the ESR to generate a minor alarm when the intake temperature exceeds 55°C:
Router(config)# facility-alarm intake-temperature minor 55The following commands disable major and minor alarms for core and intake temperature thresholds:
Router(config)# no facility-alarm core-temperature majorRouter(config)# no facility-alarm intake-temperature minorNew Features in Cisco IOS Release 12.0(21)SX
This section lists new features and improvements that are supported in Cisco IOS Release 12.0(21)SX.
Cisco 24-Port E1 Line Card Description
The Cisco 24-port E1 line card is a full-slot line card with 24 ports which you can configure as E1 interfaces. Each port on the line card provides one or more interfaces that can be configured as framed (channelized) or unframed (unchannelized) interfaces.
The following E1 features are supported on the Cisco 24-port E1 line card:
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Cisco 10000 ESR MIB Enhancements
MIB enhancements in Cisco IOS Release 12.0(21)SX provide enhanced management features that enable the ESR to be managed through the Simple Network Management Protocol (SNMP). These enhanced management features allow you to:
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Other benefits include:
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Cisco 10000 Series ESR Software Features
Table 1 lists the features supported in the Cisco 10000 series ESR.
Limitations and Restrictions
This section describes any limitations and restrictions that you should review before you use the Cisco 10000 series ESR.
MIB Support
The MIBs described in the Cisco 10000 Series ESR MIB Specifications Guide have all been approved. If a MIB is revised in a later Cisco IOS release and new functionality is added, the Cisco 10000 series ESR might not support the new functionality; however, the previous MIB functionality always remains intact on the ESR.
Controlling the Rate of Logging Messages
It is important that you limit the rate that system messages are logged by the Cisco 10000 series ESR. This avoids a situation in which the ESR becomes unstable and the CPU is overloaded. Use the logging rate-limit command to control the output of messages from the system.
We recommend that you configure the logging rate-limit command as follows:
Router(config)# logging rate-limit console all 10 except criticalThis command limits the rate of messages to the console to 10 per second, except for messages with critical priority (level 3) or greater.
For more information on the logging rate-limit command, see the Cisco IOS Configuration Fundamentals Command Reference.
Testing Performance of High-Speed Interfaces
The Cisco 10000 series ESR has multiple queues for all classes of traffic over high-speed interfaces. The software selects a queue based on the source and destination address for the packet. This ensures that a traffic flow always uses the same queue and the packets are transmitted in order.
When the Cisco 10000 series ESR is installed in a real network, the high-speed interfaces work efficiently to spread traffic flows equally over the queues. However, using single traffic streams in a laboratory environment may result in less-than-expected performance.
Therefore, to ensure accurate test results, you should test the throughput of the gigabit Ethernet, POS, or ATM uplink with multiple source or destination addresses.
Tip
Important Notes
This section contains important issues that you should be aware of with Cisco IOS Release 12.0(21)SX1 and previous releases.
Frame Relay and PPP Sessions
You can run up to 4200 Frame Relay sessions or 1300 PPP sessions, and you can configure up to 800 BGP peers on the Cisco 10000 series ESR. The ESR also supports up to 512 Multilink Point-to-Point (MLP) protocol sessions.
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Cisco Discovery Protocol
Unlike other Cisco routers, the Cisco Discovery Protocol (CDP) on the Cisco 10000 series ESR is disabled by default. You can enable CDP on an interface using the cdp enable command.
Resolved Caveats in Cisco IOS Release 12.0(21)SX1
This section lists problems that are fixed in Cisco IOS Release 12.0(21)SX1.
CSCdw63804
The CISCO-ENTITY-ASSET-MIB now provides the correct ceAssetSerialNumber values for primary and secondary PREs.
CSCdw65099
The SNMP cefcModuleOperStatus object no longer remains in the boot(5) state when SNMP is used to set cefcModuleAdminStatus to reset(3).
CSCdw67901
Previously, you could not configure the correct default settings for clock source and framing on the Cisco 24-port E1 line card without performing a workaround. This problem has been fixed, and it is no longer necessary to perform any workarounds for proper ESR performance.
CSCdw81227
When you use SNMP to set ifAdminStatus on the Cisco 10000 series ESR, the ESR no longer reloads unexpectedly.
CSCdx05747
The Cisco 10000 series ESR no longer experiences a Parallel eXpress Forwarding (PXF) crash with a context memory (CM) error when it retrieves UDP ports that are on the borderline of the context—that is, when the ESR reads a port that is on the 0x7f/0x80 border.
Resolved Caveats in Cisco IOS Release 12.0(21)SX
This section lists problems that were fixed in Cisco IOS Release 12.0(21)SX.
CSCdw65903
An error can occur with management protocol processing. For more information, go to the following URL:
http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCdw65903
Other Resolved Caveats
This section includes caveats listed in previous release notes that are regarded as resolved because they are unreproducible or do not affect the behavior of the Cisco 10000 series ESR. In the event a caveat listed in this section causes problems, contact Cisco customer service.
CSCdw51779
The system stops responding on the Cisco 10000 series ESR when you configure GRE tunneling.
Obtaining Documentation
The following 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 the following URL:
Translated documentation is available at the following 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
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, use the following address:
Attn. Document Resource Connection
Cisco Systems, Inc.
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 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 to
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You can self-register on Cisco.com to obtain customized information and service. To access Cisco.com, go to the following URL:
Technical Assistance Center
The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Inquiries to Cisco TAC are categorized according to the urgency of the issue:
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Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
The Cisco TAC Web Site allows you 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 the following URL:
All customers, partners, and resellers who have a valid Cisco services 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 the following URL to register:
http://www.cisco.com/register/
If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered, you can open a case online by using the TAC Case Open tool at the following URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; 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 will automatically open a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following 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). In addition, please have available your service agreement number and your product serial number.
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