Downloads |
Table Of Contents
Release Notes for the Cisco 10000 Series Router for Cisco IOS Release 12.0(30)SZ7
Upgrading to a New Software Release
Before You Upgrade the Cisco IOS Software
Information About Upgrading to a New Software Release
Deferral of Cisco IOS Software Images
Caveats for Cisco IOS Release 12.0(30)SZ7
Open Caveats in Cisco IOS Release 12.0(30)SZ7
Resolved Caveats in Cisco IOS Release 12.0(30)SZ7
Obtaining Documentation, Obtaining Support, and Security Guidelines
Release Notes for the Cisco 10000 Series Router for Cisco IOS Release 12.0(30)SZ7
First Published: June, 2008
These release notes provide information about Cisco IOS Release 12.0(30)SZ7 for the Cisco 10000 Series Router. This release is a maintenance release and has no new features.
For a list of the software caveats that apply to Cisco IOS Release 12.0(30)SZ7, see the "Caveats for Cisco IOS Release 12.0(30)SZ7" section.
Cisco IOS Release 12.0(30)SZ7 is based on the following releases:
•
Cisco IOS Release 12.0(30)S5
•
To review the release notes for Cisco IOS Release 12.0 S, go to:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/prod_release_notes_list.html
We recommend that you view the field notices for this release to see if your software or hardware platforms are affected. If you have an account on Cisco.com, you can find field notices at http://www.cisco.com/warp/public/tech_tips/index/fn.html. If you do not have a Cisco.com login account, you can find field notices at http://www.cisco.com/warp/public/tech_tips/index/fn.htm
Contents
These release notes describe the following topics:
•
•
•
System Requirements
The following sections describe the system requirements for Cisco IOS Release 12.0(30)SZ7:
Supported Hardware
For Cisco IOS Release 12.0(30)SZ7, you must have the performance routing engine (PRE), Part Number ESR-PRE1 installed in the Cisco 10000 series chassis. To verify which PRE is installed in the router, use the show version command.
For information about line cards supported by Cisco 10000 series routers, see the "Supported Line Cards for the 10000 Series Routers" section in the Cross-Platform Release Notes for Cisco IOS Release 12.0 S, Part 1: System Requirements at:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/prod_release_note09186a00803c2dcb.html
Feature Support
Cisco IOS software is packaged in feature sets, depending on the platform. Each feature set contains a specific set of Cisco IOS features.
Cisco IOS Release 12.0(30)SZ7 is based on Cisco IOS Release 12.0(30)S5 and subsequent Cisco IOS Release 12.0(30)SZx maintenance releases. All features supported by Cisco IOS Release 12.0S up to and including Release 12.0(30)S5 are supported by Cisco IOS Release 12.0(30)SZ7.
Caution
Upgrading to a New Software Release
The following sections provide information about upgrading your Cisco 10000 series router to a new software release:
•
•
Before You Upgrade the Cisco IOS Software
Before you upgrade (or downgrade) the Cisco IOS software running on the Cisco 10000 series router, save the running configuration file using the copy command. In route processor redundancy (RPR) mode, the router synchronizes only the startup configuration.
Information About Upgrading to a New Software Release
For specific information about upgrading your Cisco 10000 series router to a new software release, see the Cisco 10000 Series Router Performance Routing Engine Installation at:
http://www.cisco.com/en/US/products/hw/routers/ps133/prod_installation_guide09186a0080525aba.html
For general information about upgrading to a new software release, see the product bulletin Cisco IOS Upgrade Ordering Instructions at:
http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/957_pp.htm#wp26467
For additional information about ordering Cisco IOS software, see the Products and Services Ordering website at:
http://www.cisco.com/en/US/ordering/index.shtml
New and Changed Features
Cisco IOS Release 12.0(30)SZ7 is a maintenance release and has no new hardware or software features.
For information about new features supported on the Cisco 10000 series router in other releases, see the appropriate release notes at:
http://www.cisco.com/en/US/products/hw/routers/ps133/prod_release_notes_list.html
For information about Cisco IOS Release 12.0(30)S, see the appropriate document at:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/prod_release_notes_list.html
Important Notes
The following sections provide important information:
•
Inserting a New Line Card
Unlike other Cisco routers, if you insert a new or different line card into a Cisco 10000 series chassis slot that previously had a line card installed, the line card initially reports that it is administratively up.
Deferral of Cisco IOS Software Images
Cisco IOS software images are subject to deferral. We recommend that you view the deferral notices at the following URL to determine if your software release is affected:
http://www.cisco.com/public/sw-center/sw-ios-advisories.shtml
Caveats for Cisco IOS Release 12.0(30)SZ7
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats and only select severity 3 caveats are included in the caveats section of this document.
Cisco IOS Release 12.0(30)SZ7 is based on Cisco IOS Release 12.0(30)S5 and Releases 12.0(30)SZ through 12.0(30)SZ6, and contains all of the open and resolved caveats in these releases. For information on the caveats in these releases, see the following release notes documents:
•
http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/prod_release_note09186a00803c2609.html
•
http://www.cisco.com/en/US/products/hw/routers/ps133/prod_release_notes_list.html
Note
The following sections describe open and resolved caveats for Cisco IOS Release 12.0(30)SZ7:
•
•
Open Caveats in Cisco IOS Release 12.0(30)SZ7
This section describes caveats that are open in Cisco IOS Release 12.0(30)SZ7.
CSCdy45049
During a lab stress test, line rate traffic does not always achieve line rate when the configuration scales to more than 3000 serial interfaces. This occurs only when thousands of serial interfaces with PPP or HDLC encapsulation are used on the port and line rate traffic is sent through all interfaces.
Workaround: No workaround is available.
CSCeh48414
During high availability (HA) testing of the Stateful Switchover (SSO) feature, traffic is not stable before or after the switchover occurs. This behavior occurs on a Cisco 10000 series router with 200 serial network interfaces, two channelized OC-12 interfaces, and one Ethernet interface. This symptom is observed on the 200 interfaces and only when the router is running Cisco IOS Release 12.0(25)SX10.
Workaround: No workaround is available.
CSCeh73497
After a route processor (RP) switchover, the following message is sometimes observed. This occurs on the Cisco 10000 series router with redundant PRE1 cards and with RPR+ mode configured.
C10KEVENTMGR-1-IRONBUS_FAULT: Barium ErrorThe message results from an internal timing issue during the RP switchover. The affected line card recovers successfully and no performance impact is observed.
Workaround: No workaround is available.
CSCei93434
In a high availability (HA) environment with multilink PPP (MLPPP) interfaces configured, a small PXF buffer leak is observed after a PRE failover. As shown in the following sample output from the show hardware pxf cpu buffers command, for buffer pool 3 the total number of buffers (67666) does not equal the number of available buffers (67139). This is observed when the router is running Cisco IOS Release 12.0(28)S4.
pool size # buffer available allocate failures-----------------------------------------------------------0 9216 100 100 01 4672 500 500 02 1600 30000 30000 03 640 67666 67139 04 256 98165 98165 05 64 131000 131000 0Workaround: No workaround is available.
CSCej89322
Spurious memory access is observed at fib_notify_interface_state_change after the secondary switchover in the primary router. This symptom occurs on the router when running Cisco IOS Release 12.0(30)S4 and Release 12.0(28)S5.
Workaround: No workaround is available.
CSCsg51693
A random ping failure occurs between two CE routers and is randomly observed across different virtual private networks (VPNs) for more than 300 VPNs. The number of ping failures across the VPNs varies randomly. The number of VPNs is set to 500 and the number of VPN routes is set to 136. Ping operations between two PE routers are successful. The ping failure is not observed when the number of VPN routes is set to 0 and the number of VPNs is set to 999. This symptom occurs when the router is running Cisco IOS Release 12.0(30)SZ and Release 12.0(30)SZ2.
Workaround: No workaround is available.
CSCsj14143
The ifHCOutOctets and ifHCInOctets values retrieved from the IF-MIB are not correct.
Workaround: No workaround is available.
Resolved Caveats in Cisco IOS Release 12.0(30)SZ7
This section describes caveats that were fixed in Cisco IOS Release 12.0(30)SZ7.
CSCsd17253
The router failed and the following message appeared:
MGD timer Next timer has bad reverse linkage, timer = XThis symptom was observed on a Cisco 10000 series router running Cisco IOS Release 12.2(13)BZ with a PRE1 installed. The cause of the problem was that the output-command queue from the PXF toward the line cards became full due to high traffic volume. When this occurred, an interrupt generated an alert and attempted to modify the timer associated with the alert, which caused corruption of the timer tree. The router failed because interrupt-generated timer modifications are not allowed. This has been fixed.
CSCse34768
A VRF PIM neighbor was disconnected when the VRF mroute count exceeded the VRF route limit value. This has been fixed.
CSCse56501
A device running Cisco IOS software that has Internet Protocol version 6 (IPv6) enabled may be subject to a denial of service (DoS) attack. For the device to be affected by this vulnerability the device also has to have certain Internet Protocol version 4 (IPv4) User Datagram Protocol (UDP) services enabled. To exploit this vulnerability an offending IPv6 packet must be targeted to the device. Packets that are routed throughout the router cannot trigger this vulnerability. Successful exploitation will prevent the interface from receiving any additional traffic. The only exception is Resource Reservation Protocol (RSVP) service, which if exploited, will cause the device to crash. Only the interface on which the vulnerability was exploited will be affected.
Cisco is providing fixed software to address this issue. There are workarounds available to mitigate the effects of the vulnerability.
This advisory is posted at:
/en/US/products/products_security_advisory09186a008096986d.shtml
CSCsg35077
A device running Cisco IOS software failed when processing an Internet Key Exchange (IKE) message. The device had a valid and complete configuration for IPSec. IPSec virtual private network (VPN) features in Cisco IOS software that use IKE are site-to-site VPN tunnels, EzVPN (server and remote), DMVPN, IPSec over GRE, and GET VPN. This problem was triggered during IKE negotiation when an exchange of messages between IKE peers was necessary. This has been fixed.
CSCsg39295
Password information appeared in a syslog message such as the following:
%SYS-5-CONFIG_I: Configured from scp://userid:password@10.1.1.1/config.txt by consoleThis occurred when using SNMP to modify a configuration by using the CISCO-CONFIG-COPY-MIB. The password was exposed in the syslog message when ConfigCopyProtocol of the Service Control Protocol (SCP) or File Transfer Protocol (FTP) was selected. This has been fixed.
CSCsk33054
This is the Cisco Product Security Incident Response Team (PSIRT) response to a vulnerability that was reported on the Cisco NSP mailing list on August 17, 2007 regarding the crash and reload of devices running Cisco IOS after executing a command that uses, either directly or indirectly, a regular expression. The original post is available at the following link:
http://puck.nether.net/pipermail/cisco-nsp/2007-August/043002.html
The Cisco PSIRT posted a preliminary response on the same day and is available at the following link:
http://puck.nether.net/pipermail/cisco-nsp/2007-August/043010.html
Preliminary research pointed to a previously known issue that was documented as Cisco bug ID CSCsb08386 (registered customers only), and entitled "PRP crash by show ip bgp regexp", which was already resolved. Further research indicates that the current issue is a different but related vulnerability.
There are no workarounds available for this vulnerability. Cisco will update this document in the event of any changes.
The full text of this response is available at:
http://www.cisco.com/warp/public/707/cisco-sr-20070912-regexp.shtml
CSCsk63208
When the traffic rate was low, the Gigabit Ethernet queue was full, causing latency and packet loss. For example, the output of the show interface command indicated the following statistics:
Router# show interface gige0/x | include output queueOutput queue 8192/8192, x drops; input queue 0/75, 0 dropsThis has been fixed.
CSCso63116
The following error message appeared every 60 seconds on a Cisco 10000 series router running Cisco IOS Release 12.0(30)SZ6 with a PRE1 installed:
### ASSERTION FAILURE in ../src-4k-c10k/c10k_virtual.c, line 274<88>600407C0 60021634 6001F68C 604B9A8C 60470A84This occurred after enabling the following IS-IS configuration on an interface that had MPLS enabled:
ip router isisisis circuit-type level-1isis password isis level-1isis csnp-interval 30 level-1This has been fixed.
CSCso98271
Due to a memory leak in the IP-EIGRP(5): PDM process, a Cisco router consumed all available processor memory until memory allocation failure error messages appeared on the console. The router stopped functioning properly and had to be reloaded to recover the memory and restore normal operation. The memory leak was observed when EIGRP was configured on the router. This has been fixed.
Obtaining Documentation, Obtaining Support, and Security Guidelines
For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
CCDE, CCENT, Cisco Eos, Cisco Lumin, Cisco Nexus, Cisco StadiumVision, the Cisco logo, DCE, and Welcome to the Human Network are trademarks; Changing the Way We Work, Live, Play, and Learn is a service mark; and Access Registrar, Aironet, AsyncOS, Bringing the Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, IronPort, the IronPort logo, LightStream, Linksys, MediaTone, MeetingPlace, MGX, Networkers, Networking Academy, Network Registrar, PCNow, PIX, PowerPanels, ProConnect, ScriptShare, SenderBase, SMARTnet, Spectrum Expert, StackWise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the WebEx logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0805R)
Copyright © 2008 Cisco Systems, Inc. All rights reserved.
