Table Of Contents
Release Notes for Cisco IOS Release 12.1(6)E Software Feature Packs for the Cisco 7100 Series
Determining the Software Version
New Software Features in Cisco IOS Release 12.1(6)E
Deprecated and Replacement MIBs
Resolved Caveats—Cisco IOS Release 12.1(6)E2
Resolved Caveats—Cisco IOS Release 12.1(5c)E11
Resolved Caveats—Cisco IOS Release 12.1(5a)E4
Resolved Caveats—Cisco IOS Release 12.1(4)E
Resolved Caveats—Cisco IOS Release 12.1(3a)E4
Resolved Caveats—Cisco IOS Release 12.1(1)E3
Cisco IOS Software Documentation Set
Cisco IOS Release 12.1 Documentation Set Contents
Obtaining Technical Assistance
Contacting TAC by Using the Cisco TAC Website
Release Notes for Cisco IOS Release 12.1(6)E Software Feature Packs for the Cisco 7100 Series
June 25, 2001
Note
You can find the most current Cisco IOS documentation on Cisco.com. This set of electronic documents may contain updates and modifications made after CD-ROM documents are created.
These release notes for the Cisco 7100 series describe the enhancements provided in Cisco IOS Release 12.1(6)E2. These release notes are updated as needed.
For a list of the software caveats that apply to Cisco IOS Release 12.1(6)E2, see the "Caveats" section, the Caveats for Cisco IOS Release 12.1 document, and the Release Notes for Cisco 7000 Family for Cisco IOS Releases 12.0(5)XE through 12.0(7)XE1. All caveats in Cisco IOS Release 12.1(2) and Cisco IOS Release 12.0(7)XE1 are also in Cisco IOS Release 12.1(6)E2.
Use these release notes with the Cross-Platform Release Notes for Cisco IOS Release 12.1 and the Release Notes for Cisco 7000 Family for Cisco IOS Release 12.0(5)XE Through 12.0(7)XE1 located on Cisco.com and on the Documentation CD-ROM.
Contents
These release notes describe the following topics:
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Introduction
List of Terms
The following terms are used throughout this document:
Feature—Networking functionality that supports network technology and hardware. For example: Double Authentication, IP Multicast over Token Ring, Voice Over IP, PPP over ATM, and so forth.
Feature Set—A group of features. For example: IP, IP Plus, Enterprise Plus, IP IPSec 56, and so forth.
Image—Software code containing a Cisco IOS feature set. The image file nomenclature, such as c800-y6-mw, c1000-bnsy40-mz, and c2500-g-l, specifies a platform, feature set, and file compression method. For example, c4500-is56i-mz indicates:
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Feature Pack—A folder containing installation documentation and CDs that contain software images, applications and electronic documentation. Feature packs provide software upgrades for many of the Cisco hardware platforms.
Feature Pack Contents
Your feature pack contains:
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System Requirements
This section describes the system requirements for Cisco IOS Release 12.1(6)E2:
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Hardware Supported
Cisco IOS Release 12.1(6)E2 supports the Cisco 7100 series routers (including the Cisco 7120 and Cisco 7140).
A hardware-software compatibility matrix is available on Cisco.com for users with Cisco.com login accounts. Using this matrix, you can search for supported hardware components by entering a Cisco platform and an IOS release number. The hardware-software compatibility matrix tool is available at the following URL:
http://www.cisco.com/cgi-bin/front.x/Support/HWSWmatrix/hwswmatrix.cgi
Determining the Software Version
To determine the version of Cisco IOS software running on your Cisco 7100 series router, log in to the Cisco 7100 series router and enter the show version EXEC command. The following sample show version command output is from a router running a Cisco 7100 series software image with Cisco IOS Release 12.1(6)E2:
Router> show versionCisco Internetwork Operating System SoftwareIOS (tm) 7100 Software (C7100-JS56I-MZ), Version 12.1(6)E2, RELEASE SOFTWAREFeature Pack Table
Feature Set Table
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.
Cisco IOS Release 12.1(6)E2 supports the same feature sets as Cisco IOS Release 12.1(5)T, but Cisco IOS Release 12.1(6)E2 can include new features supported by the Cisco 7100 series.
Caution
Table 2 through Table 4 list the feature sets for Cisco 7100 series routers. 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 7100 series routers for Cisco IOS Release 12.1(6)E2.
All features in Cisco IOS Release 12.0(7)XE1 are also in Cisco IOS Release 12.1 E.
For a list of features for Cisco IOS Release 12.0(7)XE1, see the Release Notes for Cisco 7000 Family for Cisco IOS Releases 12.0(5)XE through 12.0(7)XE1.
All features in Cisco IOS Release 12.1(1) are also in Cisco IOS Release 12.1(2)E. For a list of features for Cisco IOS Release 12.1(1), see the Cross-Platform Release Notes for Cisco IOS Release 12.1.
New Software Features in Cisco IOS Release 12.1(6)E
The following new software feature was introduced in Cisco IOS Release 12.1(6)E.
VPN Device Manager
VPN Device Manager (VDM) software is installed directly onto Cisco VPN routers. It allows network administrators to use a web browser to manage and configure site-to-site VPNs on a single router. VDM implements a wizard-based graphical user interface (GUI) that allows simplified VPN configuration of the router on which it resides and peer-to-peer interfaces from that router to remote devices. VDM requires configuration of some Cisco IOS commands before it can be fully operational.
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VDM also monitors general system statistics and router health information such as tunnel throughput and errors. The graphing capability allows comparison of such parameters as traffic volume, tunnel counts, and system utilization.VDM supports site-to-site VPNs. Its step-by-step wizards simplify the configuration of common VPN setups, interfaces, and policies, including:
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MIBs
Current MIBs
To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
Deprecated and Replacement MIBs
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 network management system (NMS) applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 5.
Caveats
Resolved Caveats—Cisco IOS Release 12.1(6)E2
This section documents possible behavior by Cisco IOS Release 12.1(6)E2 and describes only severity 1 and 2 caveats and select severity 3 caveats.
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A Cisco router configured for tag distribution protocol (TDP) and operating with very little free memory may reload.
There are no known workarounds.
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A Cisco7100 series or Cisco 7200 series VPN router running CiscoIOS Release 12.1(6)E with ISA enabled may drop packets by the decrypting router due to a faulty switch decision after ISA decryption. This particularly occurs when process switching in involved.
Workaround:Disable the ISA card.
Alternative workaround:Use an earlier version of Cisco IOS (such as 12.1(5a)E2) instead of 12.1(6)E.
Alternative workaround:Use a version of Cisco IOS from the T-train or an IOS from the mainline instead of 12.1(6)E.
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A Cisco router running Cisco Express Forwarding (CEF) and IP Security (IPSEC) through a GRE tunnel and using the SA-ISA hardware encryption engine may cause memory allocation problems across the tunnel interface for multicast packets. The resulting SYS-3-INVMEMINT error message below indicates that multicast packets were not processed by the router:
002441 %SYS-3-INVMEMINT Invalid memory action (malloc) at interrupt levelThere are no known workarounds.
Resolved Caveats—Cisco IOS Release 12.1(5c)E11
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(5c)E11. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
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A Cisco 7000 series router with an Automatic Protection System (APS) switch will generate the following error message:
%SYS-3-INVMEMINT: Invalid memory action (malloc)There are no known workarounds.
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On a Cisco router, deleted subinterfaces may retain their settings and these settings may reappear when the same subinterface is created again.
Workaround: Cleanup all settings on a subinterface before deleteing it.
Alternative workaround: Delete all subinterface before deleting the main interface.
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A Cisco router configured for Tag Distribution Protocol (TDP) and operating with very little free memory may reload.
There are no known workarounds.
Resolved Caveats—Cisco IOS Release 12.1(5a)E4
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(5c)E4. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
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With multicast routing enabled, one may get %ALIGN-3-SPURIOUS at or near the following location:
ip_age_one_mroute(0x607c5d50)+0xc3cThe spurious interrupt would show a NULL pointer dereference with address at or near 0x558.
More detail:
In this particular case, the ALIGN-3-SPURIOUS syslog is harmless.The code was reading a boolean flag based on a pointer, and it didn't check whether the pointer was NULL or not. When the pointer was NULL, the code ended up reading a non-existing memory location and triggered the ALIGN-3-SPURIOUS syslog. On the MIPS based platform, such a read got a value of zero (i.e. FALSE for a boolean flag).
Since the same path would be taken either if the pointer is NULL, or the boolean flag is FLASE, the syslog in this case indicated a harmless event.
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When "priority" is configured in a class that matches on an access-list, and the priority kbps parameter is greater than 1/2 of the interface bandwidth, the feature does not function after router reloads.
An error message is displayed:
bandwidth of <x> kbps is not available (y).The workaround is to remove and re-attach the service-policy.
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After removing and reconfiguring a FR subinterface (or creating a new subinterfaces in some cases), the pings will succeed only 50%% and there will be cef drops. The workaround is to do a shut/no shut on the main interface or to remove and -quickly@ reconfigure- the dlci.
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The 'fair-queue queue-limit #packets command is not working and thus the per-flow queue-limit values cannot be tuned away from the default values. There is no workaround.
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Packet classification does not happen for router-originated packets when a distributed traffic-shaping (dTS) service policy is applied to a FR PVC. All router-originated packets are put in class-default queue and the class-map counter does not count those packets. The "packets output" counter for class-default is incremented normally, however.
The problem configuration is:
policy-map vc-cbwfq...policy-map vc-shapeclass class-defaultshape average <cir>service-policy vc-cbwfqmap-class frame-relay fooservice-policy output vc-shapeThere is no workaround.
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Removing "match access-group" criteria from class which has only that match criteria left can cause router crash for certain type of policy like policy with llq in one of classes.
Workaround: First add another match criteria with which "match access-group" criteria will be replaced and then remove "match access-group" criteria.
Resolved Caveats—Cisco IOS Release 12.1(4)E
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(4)E. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
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The bugID CSCdk52846 causes a router to advertise all areas and all nodes within its own area reachable via itself, with a cost of 704 and hop count of 29. The fix for bugID CSCdp25634 aids routing by having the router ignore these special updates. However, any other devices on that segment will still get the routing updates. This bug is filed to disable this feature or add a knob to disable the special updates.
Resolution:
A new CLI command 'decnet cluster-alias update' has been introduced. By default this command is enabled, and all cluster-alias updates will be propagated. However, if a user wishes to prevent these updates from propagating, he can configure 'no decnet cluster-alias update'.'no decnet cluster-alias update' will block all special updates, with a cost of 704 and hop count of 29.
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A Cisco router that receives a large packet that was fragmented before receipt may display the following error message at the rendezvous point of a multicast network that is running Protocol Independent Multicast (PIM) sparse mode:
%PIM-5-REG_ENCAP_INVALID: Bad register from <IP-address> for (<IP-address>,<Class-D-IP-address>). Trace = ....Workaround: Send a mix of large and small packets from the source, so that the source tree is set up correctly by the small packets between the first hop and the Route Processor (RP). If the multicast data is forwarded correctly, then this situation may not cause any real harm.
Alternate workaround: Reduce the packet size from the source, so that fragmentation does not occur between the first hop and the RP.
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WRED will classify all MPLS packets as precedence 0 in the MPLS->MPLS and MPLS->IP paths, regarless of their actual MPLS Experimental field value.
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A Cisco 7100 series router running Cisco IOS Release 12.1 E may reload with a bus error in crypto_classify_packet. There is no workaround.
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ISA firmware errors in malloc handling result in a possible crash, ISA lockup or 1cxx errors.
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When Server Load Balancing is configured, fragmented ICMP ping responses from the virtual ip address may be corrupted.
The last 14 bytes of the ping response are corrupted. Note that this only affects ICMP packets, not TCP or UDP packets. Typically, this only occurs if a large ping packet is sent to an SLB vserver.
One workaround is to deny fragmented ICMP packets with a destination ip address of a virtual server using an input Access Control List on the interfaces. This prevents Server Load Balancing from generating the corrupted response to the ping.
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After CSCdr76238 OSPF does not work on unnumbered interfaces.
Workaround is to configure IP address on the interface.
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When you use Multilink PPP over virtual private dial-up network (VPDN), the links fail to come up.
Workaround: Disable Multilink PPP over those links.
Resolved Caveats—Cisco IOS Release 12.1(3a)E4
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(3a)E4. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
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Resolved Caveats—Cisco IOS Release 12.1(1)E3
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(1)E3. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
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A Gigabit Ethernet Interface Processor (GEIP) that is configured for Cisco Encryption Technology (CET) decrypts packets correctly but fails to encrypt packets that match the crypto policy and should be encrypted. In this situation, the GEIP forwards the packets unencrypted.
Workaround: When network topology permits, use the VIP2-40 or VIP2-50 with one or two PA-FE port adapters.
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The VIP in the highest slot may not boot properly after a router reload.
There are no known workarounds.
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During the startup, default bandwidth was not being properly set up for ATM Dlx card. The default visible_bandwidth was set to BANDWIDTH_SCALE by the common interface initialization routine, which is 10000000. Now, the code has been changed to set up the default interface bandwidth and delay during startup config setup for ATM Dlx.
There are no known workarounds.
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In some configurations, if a policy-map is configured to use class-maps based on access lists, after bootup the classification does not occur properly (for example, packets that should match the class are not considered to match).
Workaround: Remove and redefine the class after bootup.
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CEF may not process an interface up event, resulting in a show interface command displaying the interface as up while the show cef interface command displays the same interface as down. This may result in missing prefixes in the CEF table.
Workaround: Repeat the no shutdown command on the interface. It is not necessary to first issue a shutdown command on the interface.
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Related Documentation
The following sections describe the documentation available for the Cisco 7100 series routers. These documents consist of hardware and software installation guides, Cisco IOS configuration guides 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 Release 12.1 and are located on Cisco.com and on the Documentation CD-ROM:
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On Cisco.com at:
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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Technical Documents
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As a supplement to the caveats listed in "Caveats" in these release notes, see the Caveats for Cisco IOS Release 12.1 document.
On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Caveats
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Caveats
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On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cisco 7000 Family Routers: Cisco 7000 Family—Release Notes for Release 12.0 XE: Release Notes for Cisco 7000 Family for Cisco Releases 12.0(5)XE through 12.0(7)XE1
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cisco 7000 Family Routers: Cisco 7000 Family—Release Notes for Release 12.0 XE: Release Notes for Cisco 7000 Family for Cisco IOS Releases 12.0(5)XE through 12.0(7)XE1
Platform-Specific Documents
These documents are available for the Cisco 7100 series routers on Cisco.com and on the Documentation CD-ROM:
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On Cisco.com at:
Technical Documents: Documentation Home Page: Core/High-End Routers
On the Documentation CD-ROM at:
Cisco Product Documentation: Core/High-End Routers
Feature Modules
Feature modules describe new features supported by Release 12.1 E 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 at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in 12.1-Based Limited Lifetime Releases: Cisco IOS Release 12.1 E
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in 12.1-Based Limited Lifetime Releases: Cisco IOS Release 12.1 E
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 Java Script 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. 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. The Cisco IOS software documentation set is 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 one or more configuration guides and one or more corresponding command references. Chapters in a configuration guide describe protocols, configuration tasks, and 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 at:
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 Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
Cisco IOS Release 12.1 Documentation Set Contents
Table 6 lists the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form if ordered.
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On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
The most current Cisco documentation is available on the World Wide Web at http://www.cisco.com. Translated documentation can be accessed at http://www.cisco.com/public/countries_languages.shtml.
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 products 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.
For your convenience, many documents contain a response card behind the front cover for submitting your comments by mail. 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
The following sections provide sources for obtaining technical assistance from Cisco Systems.
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/
Cisco.com registered users who cannot resolve a technical issue by using the TAC online resource 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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