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Table Of Contents
Release Notes for the Cisco 10000 ESR for Cisco IOS Release 12.0(11)SL
Upgrading to a New Software Release
Cisco 10000 ESR Software Features
ChOC-12 and OC-12 ATM Line Card Support
Automatic Protection Switching Support
Channelized OC-12 Line Card Caveats
Resolved in Cisco IOS Release 12.0(11)SL
Obtaining Technical Assistance
Release Notes for the Cisco 10000 ESR for Cisco IOS Release 12.0(11)SL
November 13, 2000
These release notes provide information about Cisco IOS Release 12.0(11)SL, which runs on the Cisco 10000 Edge Services Router (ESR).
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(11)SL is based on Cisco IOS Release 12.0(11)S4. For a list of the software caveats that apply to Cisco IOS Release 12.0(11)SL, see the "Caveats" section and the release notes for Cisco IOS Release 12.0(S). To review the release notes for Cisco IOS Release 12.0S, go to www.cisco.com and click Technical Documents > Cisco Product Documentation > Cisco IOS Software Configuration > Cisco IOS Release 12.0 > Release Notes > Cisco 12000 Series Router > Cisco 7000 Family and 12000 Series - Release Notes for Release 12.0(S).
Use these release notes in conjunction with the cross-platform Release Notes for Cisco IOS Release 12.0.
Contents
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Upgrading to a New Software Release
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Upgrading to a New Software Release
For specific information about upgrading your Cisco 10000 ESR to a new software release, see the Cisco 10000 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 Cisco IOS software, refer to the Cisco IOS Software Releases URL:
http://www.cisco.com/warp/public/cc/pd/iosw/iore/index.shtml
System Requirements
We recommend that you use 512 MB of memory on the Performance Routing Engine (PRE). New PREs are shipped with 512 MB of memory. In a redundant setup, both PREs should have the same amount of memory.
Cisco 10000 ESR Software Features
The following features are supported in the Cisco 10000 ESR.
Limitations and Restrictions
This section describes important limitations and restrictions that you should review before you use the Cisco 10000 ESR.
ChOC-12 and OC-12 ATM Line Card Support
Software support is available for the Channelized OC-12 (ChOC-12) line card and the OC-12 ATM line card.
Be sure to review the caveats described in the "Channelized OC-12 Line Card Caveats" section and the "OC-12 ATM Line Card Caveats" section.
Automatic Protection Switching Support
Automatic protection switching is supported on the OC-12 POS line card, with the following limitation.
For APS to work properly, you must always have an OC-12 POS line card installed in the lower-numbered (odd) slot.
The system receives clocking information from the line card in the odd slot. If you remove the odd-numbered card (or if the clocking mechanism on that card fails), the clocking is lost and the data path is shut down. (Caveat no. CSCdr81416)
To manage this APS behavior, we recommend the following:
1.
2.
Router(config)# redundancyRouter(config-r)# no associate 5 6Router(config-r-a-sl)# exitRouter(config)# interface pos 5/0/0Router(config-if)# shutdownYou can now remove the card in slot 5.
3.
Important Notes
You can run up to 2000 Frame Relay sessions or 1300 PPP sessions, and you can configure up to 300 BGP peers on the Cisco 10000 ESR. The router also supports up to 512 Multilink Point-to-Point (MLP) protocol sessions.
Note
Caveats
This section describes the caveats for the Cisco 10000 ESR running under Cisco IOS software Release 12.0(11)SL. Additional caveats can be found in the "Channelized OC-12 Line Card Caveats" section and the "OC-12 ATM Line Card Caveats" section.
CSCdr19206
If you preconfigure a line card using the card command, this significantly degrades PRE performance.
Workaround: Do not use the card command to preconfigure line cards. Instead, use the no card command to remove references to cards that are not in the chassis.
CSCdr25441
The router sends out DHCP INFORM and DISCOVER messages containing an incorrect Ethernet address.
Workaround: No workaround is necessary. This caveat is harmless because these DHCP messages are not used to acquire IP addresses. They are used to gather environmental data such as the domain name server address.
CSCdr36564
When you use the Frame Relay autosense feature, the Cisco 10000 ESR sends all three LMI status message types immediately after the interface starts responding. However, sometimes the switch at the other end is not ready to receive messages and as a result, misses one or two messages that were sent. LMI autosense waits until the next scheduled interval (default is 1 minute) to send the messages again.
This problem primarily affects clear channel CT3 interfaces.
Workaround: There is currently no workaround.
CSCdr43835
When you send large numbers of packets from the Gigabit Ethernet line card to the PRE in the Cisco 10000 ESR, you may lose a small number of packets. This only occurs for some packet sizes at very high bandwidths, with loss rates of a few parts per million.
Workaround: There is currently no workaround.
CSCdr47500
During periods of heavy traffic (approaching interface line rate), some interfaces may experience inconsistent performance between interfaces of the same type.
Workaround: There is currently no workaround.
CSCdr50586
You cannot generate FDL Bellcore remote loopback requests.
The Bellcore keyword in the t1 <t1-number> loopback remote line fdl bellcore command is not supported. Bellcore (Telcordia) began phasing out their standard in favor of the ANSI standard in the early 1990s.
The software responds to FDL Bellcore remote loopback requests, but does not generate these requests.
Workaround: Use the t1 <t1-number> loopback remote line fdl ansi command to run a remote loopback.
CSCdr52081 and CSCdj94209
The PRE may crash if you repeatedly change a port back and forth from channelized to unchannelized.
Repeated conversions of a T3 port from channelized mode to unchannelized mode and back, with intervening assignments of IP addresses to the interfaces and ping testing, may cause the PRE crash.
Workaround: Reload the chassis.
CSCdr52708
If you remove a line card during periods of heavy traffic and then reinsert it (or another line card of the same type), on rare occasion the card fails to pass traffic.
Workaround: Use the shutdown command to shut down interfaces and controllers before you remove the line card. If a failure occurs, you can activate the card by entering the privileged EXEC mode microcode reload pxf command.
CSCdr62013
If large MLP configurations are in use, and you attempt to copy the configuration from a TFTP server directly into the running config, the copy may fail. Failures may include interfaces not appearing or IPCP or LCP states not opening correctly.
Workaround: These failures are far less likely to occur if the configuration is copied to bootflash, and then from bootflash to the running config. Copy the configuration file to the startup config and then reload the router.
CSCdr81416
Limited support for APS. For detailed information, refer to the "Automatic Protection Switching Support" section.
CSCdr92058 and CSCdr98370
Large multicast groups may cause CPU hog issues in the PIM process. The tested number of 500 destinations in one group caused CPU hog messages (max limit is unknown).
Workaround: There is currently no workaround.
CSCdr95685
Packet throughput may be less than optimal on all interfaces when a large number of MLP bundles are configured or during periods of heavy MLP traffic.
Workaround: Limit the number of MLP bundles you configure.
CSCdr98341
The Flash disk can fall into the chassis when you insert the disk into the empty space to the right of the slot B in the PRE flash assembly.
Workaround: Pay extra attention when inserting a flash disk into the PRE flash assembly. Do not insert the disk in the empty space to the right of the slot B—if you insert a card in that space, it will fall into the chassis.
CSCds01233
If you send a large number of small packets in large multicast groups, this may cause the following debug messages to appear on the console:
### ASSERTION FAILURE in../src-4k-c10k/c10k_isr_ct3.c, line 548<idb invalid on vc 0x624FA974, slot 12 port 0 chan 104dh 05E0001F 680100FF>60044EB4 60016E48 60017238 601F2C9C 601D0404### ASSERTION FAILURE in../src-4k-c10k/c10k_isr_ct3.c, line 535<port 7 invalid>60044CEC 60016E48 60017238 601F2C9C 601D0404Workaround: Decrease the number of small packets.
CSCds04367
When older CT3 line cards are powered on with live DS3 signals present at the receive BNC connector, the receive line interface device on the board may lock up, preventing the controller from running. You can verify this symptom by using the show controller t3 command, which shows that the controller is down, the Receiver has Loss of Frame, and the Line Code Violations counter is counting errors at a rapid rate.
Workaround: Replace the CT3 line card with an upgraded line card. CT3 line cards with Version 800-05547-04 Revision A0 or later have a hardware design change to avoid this problem. On older cards, you can work around the problem by removing the receive signal momentarily after the line card is powered on. For example, remove and reinsert the coaxial cable on the associated RX BNC connector on the rear of the chassis.
CSCds20932
When a Cisco 10000 is reloaded with a large number interfaces configured as Frame Relay DCE, line cards may report down and up again before the chassis stabilizes.
Workaround: Wait for couple of minutes until the chassis stabilizes.
CSCds25069
The default logging parameter (logging rate-limit console all 10 except critical) sets console logging to disabled.
Workaround: Enter the logging console critical command to view the most important events such as card up/down and toaster failure events.
CSCds26407
If you are running more than 1300 PPP sessions on a Cisco 10000, some of those sessions may not come up after you reload the Cisco 10000. In the show interface command display, those sessions may appear in an LCP closed state or an IPCP closed state.
Workaround: Shut/no shut the underlying interface.
CSCds36117
If you enter the clear ip mroute command on a system with large multicast groups, CPU hog issues may arise that cause problems of moderate severity (such as losing keepalives).
Workaround: Do not use the clear ip mroute command in large multicast groups.
CSCds41791
If you reload a Cisco 10000, some initialization messages are logged to the console before the startup-config is loaded. These initialization messages are transitional and may report an incorrect state, especially for the FastEthernet interface.
00:00:15: Downloading Microcode: file=system:pxf/ucode_file, version=2.0(21.4), description=Nightly Build Software created Wed 13-Sep-00 00:3800:00:21: %LINK-3-UPDOWN: Interface Ethernet0/0/0, changed state to up00:00:21: %LINK-5-CHANGED: Interface FastEthernet0/0/0, changed state to reset00:00:23: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0/0, changed state to up0:00:23: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0/0, changed state to downThese messages are not displayed in the buffered log.
Workaround: Ignore these messages.
CSCds42218
Under heavy load on the Cisco 10000, serial line keepalives may be dropped, which causes serial lines to go down and then recover.
Workaround: There is currently no workaround.
CSCds49957
When you boot the Cisco 10000, the system may display the following messages:
*Oct 17 12:32:48.287: %SNMP-3-TRAPBLOCK: Attempt to generate SNMP trap from a process with blocking disabled-Traceback= 60565064 606A6B34 60678238 60678438 6067AD88 6067AF30 602FCBDC 6024817C 60248168Workaround: Ignore the messages.
CSCds50146
If you run the show interface command on interfaces with HDLC encapsulation, the input bytes statistics do not update properly. The input bytes display (or polling the mib value if InOctets) reports a very large (a negative value) number.
Workaround: There is currently no workaround.
CSCds50249
If incoming multicast packets match an input access list that has the log option enabled, the output of the show log command and show access-list commands display double the number of matches.
Workaround: There is currently no workaround.
CSCds50625
If the PRE microcode is reloaded because of an unusual condition (such as a system crash), multiple pxf_crashinfo files are produced within a 1 or 2 seconds of each other.
Workaround: There is currently no workaround.
CSCds51102
If you perform an SNMP walk or view entries in the if table, cef-layer internal interfaces appear in the interface table.
Workaround: Ignore interfaces whose descriptor contains the string .0-cef layer.
CSCds51521
Inverse ARP requests are sometimes generated for only 5 of 10 configured PVCs.
Workaround: There is currently no workaround.
CSCds53043
A large number of BGP networks can cause 100% CPU utilization on the PRE. If this occurs, the line cards may reload.
Workaround: There is currently no workaround.
CSCds55172
The CLI help text for the access-list command does not show the A.B.C.D option for the source address. For example:
Router(config)#access-list 1 ?deny Specify packets to rejectpermit Specify packets to forwardWorkaround: Disregard the help text and, enter the complete access-list command as you normally do. For example:
Router(config)#access-list 1 permit 1.1.1.1 0.255.255.255 logRouter(config)#CSCds55817
If you copy a large set of reconfiguration instructions to a large configuration using TFTP, the Cisco 10000 can crash. For example, if the configuration instructs the system to run the no channelized command on each T3 controller, the router may crash.
Workaround: Either limit the number of reconfiguration instructions, or reload the router with a blank configuration before you copy config information into the running config.
CSCds55838
When you change the configuration of the two PRE slots from redundant to nonredundant, TBB_LENGTH_ERRORs appear and the PXF reloads.
#config t(config)#red(config-r)#no associate slot 1 2<now TBB_LENGTH_ERROR message appear, and toaster reload>This problem occurs if you first boot the system without APS, then configure APS, then deconfigure APS while there is active traffic on the redundant slot.
Workaround: Boot the system with APS configured before deconfiguring it, or turn off all traffic, keepalives, and CDP packets on the secondary slot before deconfiguring APS.
CSCds57109
On rare occasions, a hardware timing problem may cause a PRE fault.
If this error occurs, the event below is logged in SysLog as follows:
%C10KEVENTMGR-1-MAJOR_FAULT: PXF DMA TBB Length Error, Restarting PXFWorkaround: There is no workaround for this problem. The PXF is restarted by Cisco IOS and normal communications should resume.
Channelized OC-12 Line Card Caveats
This section describes the caveats for the Cisco 10000 ESR ChOC-12 line card.
OC-12 ATM Line Card Caveats
This section describes the caveats for the Cisco 10000 ESR OC-12 ATM line card.
Resolved Problems
This section lists resolved problems.
Resolved in Cisco IOS Release 12.0(11)SL
This section lists problems that are resolved in Cisco IOS Release 12.0(11)SL. For a list of problems that were resolved in previous Cisco IOS Releases, refer to the release notes for those particular versions.
CSCdr42326
The show controller t3 command does not display DSU information.
CCSCdr57030
If the ChOC-12 line card is reloaded, the SONET controller on the line card may not respond.
CSCdr59310
The show hardware command lists preconfigured cards (cards that are not physically located in the chassis).
CSCdr61927
The ChOC-12 line card CLI (and the printed version of the Cisco 10000 ESR Software Configuration Guide) list several T1 BERT tests that are not supported on the ChOC-12 line card.
SCdr63819
After you reload a router in a configuration that includes back-to-back CT3 connections using Frame Relay subinterfaces, the system may report that, for some interfaces, the interface is up but the line protocol is down.
CSCdr63866
If 2000 Frame Relay connections are configured between back-to-back Cisco 10000 routers, and if you restart one chassis, this causes line cards on the other chassis to report a down state before returning to an up state.
CSCdr82364
The output from the show controller sonet command always displays the STS Path Signal Label as 00.
CSCdr84791 and CSCdr98217
The Cisco 10000 ESR console may stop responding if you run two Cisco 10000 ESRs back-to-back with the following characteristics: approximately 350 T1 and sub-T1 lines between them and POS ports that bounce every 30 to 60 seconds.
CSCdr91687
In rare situations, the gigabit Ethernet port stops receiving packets, causing the input drop count to increment.
CSCdr91975
If you ping a multicast group of more than 200 interfaces or bring up such a node in a live network, this may cause CT3 line card protocols to stop responding.
CSCdr93015
T1 frames remain in loopback mode on the Channelized OC-12 line card.
CSCdr97304
Under rare conditions, it is possible to run a fully-booted IOS on both PRE modules at the same time. (At least one of the IOS images will be the "eboot" boothelper image.) In this situation, the console logs on both of the PREs may report that a duplicate address has been detected.
CSCds00101
The Cisco 10000 ESR may crash with a watchdog timeout after it dumps several individual CPUHOG messages (if CPUHOG checking is active).
CSCds02306
When the Cisco 10000 gigabit Ethernet line card receives giant frames of 17000 to 18000 bytes, the gigabit Ethernet line card reloads.
CSCds02514
SNAP and SAP/IP packets received on the gigabit Ethernet interface are dropped when parallel express forwarding is enabled.
CSCds07299
Pinging may fail when you attempt to ping through the ATM interface with a packet size that is greater than the MTU for the interface.
CSCds14381
When two Cisco 10000s are connected back-to-back by CT3 links, if no CT3 framing is configured on either end of the link, the show controller t3 command may report incorrect framing types.
CSCds19278
On system startup, some T1s in a T3 may not report as running. As a result, all interfaces on each affected T1 remain in a down state.
CSCds27170
On rare occasion, when the local traffic load approaches maximum sustainable throughput while processing packets that are less than 512 bytes in length, the PRE may restart.
CSCds25781
The show interface multilink command generates two traceback messages.
CSCds28990
The aps ber threshold and the pos threshold commands modify both the interface threshold (which triggers the facility alarm on the PRE) and the APS threshold (which triggers line card APS cutovers).
CSCds29346
On rare occasions, the host software loses management synchronization with the SAR firmware.
CSCds36945
Copying a configuration with a large number of channel groups, in this case the maximum number of channels 768 with encapsulation PPP, ipc is disabled on that line card. This causes the protocol state of all serial interfaces to remain in the down state.
CSCds37535
The hw-module slot <x> shutdown configuration command is ignored after IOS reloads even though it appears in the running configuration.
CSCds39362
On a Cisco 10000 system with a channelized OC-12 line card where the card has been configured with one or more channel groups (nxDS0) we have observed that sometimes the channel in question stops forwarding inbound packets.
CSCds41040
When this ucode crash and reload happens, once in a while the PPP state between RP and toaster are getting out of state giving rise to the SW exception.
CSCds41744
This bug occurs when the Kentrox CSU/DSU and the C10000 CT3 card are both configured for full bandwidth DS3 (45.0Mbps on Kentrox, 44210Kbps on CT3). With this configuration the interface will not pass data.
CSCds44684
Under rare situations, a DS1 channel will generate a stream of erroneous packets after the channel is configured. Normal traffic will not be able to be passed on this channel.
CSCds46785
High volumes of traffic can lead to unnecessary packet drops on an OC-12 ATM line card.
CSCds46789
Sometimes PPP does not negotiate. The end result is that the interface line and protocol say up, but PPP is stuck in a IPCP listen state.
Unreproducible Caveats
This section lists problems that were previously listed under Caveats in Cisco IOS Release 12.0(10)SL, but have not been reproduced during testing. In the unlikely event you experience the problems described in this section, contact Cisco customer service.
For a list of unreproducible caveats in previous Cisco IOS Releases, refer to the release notes for those particular versions.
CSCds07681
In rare cases, after extended use, the system does not allow you to access the NVRAM. In these situations, the show start command returns a No such device message, and the cd nvram command returns a No memory available message.
Workaround: Free up memory by restarting the router.
CSCds12361
Some combinations of config register settings, boot config flashdevice:filename settings, and redundancy configurations may cause the system to report that there is not enough space to save the startup configuration. In particular, the CONFIG_FILE variable, which in normal usage should follow the value of the boot config command, may take on a value unexpectedly.
Workaround: Use the no boot config command to remove the redirection of the startup configuration. As a safety measure, save a copy of the current configuration first.
Obtaining Documentation
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
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
Registered CCO users can order the Documentation CD-ROM and other Cisco Product documentation through our online Subscription Services at http://www.cisco.com/cgi-bin/subcat/kaojump.cgi.
Nonregistered CCO users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-4000 or, in North America, call 800 553-NETS (6387).
Obtaining Technical Assistance
Cisco provides Cisco Connection Online (CCO) as a starting point for all technical assistance. Warranty or maintenance contract customers can use the Technical Assistance Center. All customers can submit technical feedback on Cisco documentation using the web, e-mail, a self-addressed stamped response card included in many printed docs, or by sending mail to Cisco.
Cisco Connection Online
Cisco continues to revolutionize how business is done on the Internet. Cisco Connection Online 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.
CCO's broad range of features and services helps customers and partners to streamline business processes and improve productivity. Through CCO, you will find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online support services, 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 CCO to obtain additional personalized information and services. Registered users may order products, check on the status of an order and view benefits specific to their relationships with Cisco.
You can access CCO in the following ways:
•
•
•
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You can e-mail questions about using CCO to cco-team@cisco.com.
Technical Assistance Center
The Cisco Technical Assistance Center (TAC) is available to warranty or maintenance contract customers who need technical assistance with a Cisco product that is under warranty or covered by a maintenance contract.
To display the TAC web site that includes links to technical support information and software upgrades and for requesting TAC support, use www.cisco.com/techsupport.
To contact Cisco by e-mail, use one of the following:
In North America, TAC can be reached at 800 553-2447 or 408 526-7209. For other telephone numbers and TAC e-mail addresses worldwide, consult the following web site: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.
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 and value your comments.
This document is to be used in conjunction with the Cisco 10000 ESR documentation.
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