Table Of Contents
Release Notes for Cisco 6400 NRP for Cisco IOS Release 12.0(7)DC
Determining Your Software Release
Upgrading to a New Software Release
New Hardware and Software Features in Release 12.0(7)DC1
New Software Features in Release 12.0(7)DC
Layer 2 Tunnel Protocol Scalability Enhancements
Node Route Processor-Service Selection Gateway Enhancements II
Web Cache Communication Protocol Version 2
New Software Features in Release 12.0(5)DC
Combined Network Management Ethernet Interface
Service Selection Gateway Features
New Software Features in Release 12.0(3)DC
Point-to-Point Protocol over Ethernet
Node Route Processor—Service Selection Gateway
Pre-Existing NRP Hardware Caveats
Determining Your NRP Part Number
Open Caveats - Release 12.0(7)DC1
Resolved Caveats - Release 12.0(7)DC1
Open Caveats - Release 12.0(7)DC
Resolved Caveats - Release 12.0(7)DC
Cisco IOS Software Document Set
Release 12.0 Documentation Set
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
Release Notes for Cisco 6400 NRP for Cisco IOS Release 12.0(7)DC
February 16, 2002
These release notes for the node route processor (NRP) of the Cisco 6400 UAC support Cisco IOS Release 12.0DC, up to and including Cisco IOS Release 12.0(7)DC1. These release notes are updated as needed to describe new features, memory requirements, hardware support, software platform deferrals, and changes to the microcode or modem code and related documents.
For a list of the software caveats that apply to Cisco IOS Release 12.0(7)DC1, see the "Software Caveats" section and Caveats for Cisco IOS Release 12.0 T. The caveats document is updated for every maintenance release and is located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
Use these release notes in conjunction with the cross-platform Release Notes for Cisco IOS Release 12.0 located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
Contents
These release notes discuss the following topics:
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Pre-Existing NRP Hardware Caveats
System Requirements
This section describes the system requirements for the Cisco 6400 UAC NRP and includes the following sections:
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Memory Requirements
Table 1 describes the memory requirements for the Cisco 6400 NRP.
Table 1 Cisco 6400 NRP Memory Requirements
Note
Hardware Supported
Cisco IOS Release 12.0(7)DC1 supports the Cisco 6400 NRP. For detailed descriptions of the new hardware features, see the "New and Changed Information" section.
Software Compatibility
Cisco IOS Release 12.0(7)DC1 works with the Cisco Service Selection Dashboard, version 2.2.
Cisco recommends that you use Cisco IOS Release 12.0(7)DC1 for the NRP concurrently with Cisco IOS Release 12.0(7)DB for the Cisco 6400 node switch processor (NSP). For information about Cisco IOS Release 12.0(7)DB for the NSP, see the Release Notes for Cisco 6400 Node Switch Processor (NSP) for Cisco IOS Release 12.0(7)DB.
Determining Your Software Release
To determine the version of Cisco IOS software currently running on your router, log on to the Cisco 6400 NRP and enter the show version EXEC command:
router> show versionAn output appears similar to the following. The Cisco IOS version appears in the second line.
Cisco Internetwork Operating System SoftwareIOS (tm) 6400 Software (c6400r-g4p5-mz), Version 12.0(7)DC1.......The output includes additional information including processor revision numbers, memory amounts, hardware IDs, and partition information. To upgrade to a new software release, see the "Cisco Connection Online" section.
Upgrading to a New Software Release
For information about upgrading software on the Cisco 6400 Universal Access Concentrator (UAC), including upgrading a single- or dual-NRP system to a new software release, see the software note Upgrading Software on the 6400 UAC located at:
http://www.cisco.com/univercd/cc/td/doc/product/dsl_prod/6400/softnote/upgradsw.htm
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
If you do not have an account on CCO and want general information about upgrading to a new software release, see the product bulletin Cisco IOS Software Release 11.3 Upgrade Paths and Packaging Simplification (#703: 12/97) on CCO at:
Technical Documents: Product Bulletins: Software:Cisco IOS 11.3:
Cisco IOS Software Release 11.3 Upgrade Paths No. 703This product bulletin does not contain information specific to Cisco IOS Release 12.0 but provides generic upgrade information that may apply to Cisco IOS Release 12.0.
Feature Table
The Cisco IOS software is packaged in software images that each contain a specific set of Cisco IOS features. Table 2 lists the features supported by the Cisco 6400 NRP image called c6400r-g4p5-mz.
Note
New and Changed Information
The following sections list the new features supported by the NRP in Cisco IOS Release 12.0(7)DC1 and Cisco IOS Release 12.0(7)DC.
New Hardware and Software Features in Release 12.0(7)DC1
No new hardware or software features are supported in Cisco IOS Release 12.0(7)DC1.
New Software Features in Release 12.0(7)DC
Border Gateway Protocol
The Cisco 6400 supports BGP4, the current version of Border Gateway Protocol (BGP). For more information on Border Gateway Protocol, see the "Border Gateway Protocol (BGP)" chapter in the Internetworking Technology Overview.
Layer 2 Tunnel Protocol Scalability Enhancements
By improving L2TP control connection processing and virtual template cloning, these scalability enhancements provide resilience to dropouts between the L2TP access concentrator (LAC) and L2TP network server (LNS) while supporting the following combinations of PPP sessions and L2TP tunnels:
PPP Sessions
Supported L2TP TunnelsPPPoE
up to 2000
up to 300
PPPoA
up to 1700
up to 300
Combined
PPPoE and PPPoAup to 1700
up to 100
For more information on these enhancements, see the Layer 2 Tunnel Protocol Scalability Enhancements feature module.
Note
Multiprotocol Label Switching
The Cisco 6400 NRP can participate in a Multiprotocol Label Switching (MPLS) network as an MPLS label switch controller (LSC) for the Cisco BPX 8650. For more information, see the MPLS Label Switch Controller Enhancements feature module.
The NRP can also participate in an MPLS network as a label switch router (LSR) or as an Edge LSR, as well support MPLS virtual private networks (VPNs). For more information on MPLS on the 6400, see the Configuring Multiprotocol Label Switching on the Cisco 6400 UAC configuration note.
Node Route Processor-Service Selection Gateway Enhancements II
The Node Route Processor-Service Selection Gateway (NRP-SSG) feature is now disabled by default. To use NRP-SSG in this release, enter the ssg enable global configuration command.
NRP-SSG now also supports L2TP. When a subscriber selects a service via the Service Selection Dashboard (SSD), the NRP as an L2TP Access Concentrator (LAC) will send the PPP session through the service specific L2TP tunnel. If the tunnel does not already exist, the NRP-LAC creates the proper tunnel to the L2TP Network Server (LNS).
For more information on these NRP-SSG enhancements, see the Node Route Processor—Service Selection Gateway Enhancements II feature module.
RADIUS VC Logging Enhancement
This feature enhancement provides a new show command to display the VPI/VCI information that can be used by the RADIUS VC Logging feature. For more information, see the RADIUS VC Logging Enhancement feature module.
Web Cache Communication Protocol Version 2
The Cisco 6400 NRP supports Web Cache Communication Protocol (WCCP) Version 2. The WCCP feature allows you to use a Cache Engine to handle web traffic, reducing transmission costs and downloading time. For more information on WCCP Version 2, see Appendix C, "Web Cache Communication Protocol Version 2", in the Cisco Cache Engine User Guide, Version 2.0.0.
New Software Features in Release 12.0(5)DC
Layer 2 Tunnel Protocol
The Cisco 6400 NRP supports the use of layer 2 tunnel protocol (L2TP), an extension to the PPP protocol used for virtual private networks (VPNs). Release 12.0(5)DC supports L2TP with up to 400 sessions and up to 25 tunnels. For more information about L2TP, see the Layer 2 Tunnel Protocol feature module.
Note
Combined Network Management Ethernet Interface
The combined network management Ethernet (NME) interface allows the entire Cisco 6400 system, including the NSP and all installed NRPs, to be managed through a single Ethernet interface. The NME interface eliminates the need for Ethernet cables and connections on individual NRPs.
Use of the combined NME interface requires Cisco IOS Release 12.0(5)DB for the NSP. See "Software Compatibility" section for more information.
For more information about using the combined NME interface, see "Configuring the NSP" and "Configuring the NRP" in the Cisco 6400 UAC Software Configuration Guide.
RADIUS VC Logging
RADIUS Virtual Circuit (VC) Logging allows the Cisco 6400 Universal Access Concentrator to accurately record the virtual path interface (VPI) and virtual circuit interface (VCI) of an incoming subscriber session. With RADIUS VC Logging enabled, the RADIUS network access server (NAS) port field is extended and modified to carry VPI/VCI information.This information is logged in the RADIUS accounting record created at session startup. For more information about RADIUS VC logging, see the RADIUS VC Logging feature module.
IPCP Subnet Mask Support
IP Control Protocol (IPCP) subnet mask support allows customer premise equipment (CPE) to connect to the Cisco 6400 NRP and obtain an IP address and subnet mask range which it can use to populate its DHCP server database. To enable IPCP subnet mask support, you must specify a value for the Framed-IP-Netmask attribute (IETF RADIUS attribute 9) in the RADIUS user profile.
Using IPCP, the Cisco 6400 brings up PPP sessions with the CPE and authenticates each CPE as a separate user. The Cisco 6400 adds a static route for the IP address with the mask specified. If the netmask is specified in the user profile, the Cisco 6400 passes the IP netmask value and the IP address to the CPE during IPCP negotiation. The CPE uses the netmask to calculate an IP address pool from which IP addresses are assigned to PCs using the access link.
ATM Routed Bridge Encaps
The ATM routed bridge encaps feature on the Cisco 6400 NRP is used to route IP over bridged RFC 1483 Ethernet traffic from a stub bridged LAN. Bridged IP packets received on an ATM interface configured in route-bridged mode are routed via the IP header. Such interfaces take advantage of the characteristics of a stub LAN topology and offer increased performance and flexibility over integrated routing and bridging (IRB). For more information about ATM routed bridge encaps, see the ATM Routed Bridge Encaps feature module.
Service Selection Gateway Features
Enhancements to the Cisco 6400 NRP Service Selection Gateway (SSG) include IOS network address translation (NAT), support for Cisco Express Forwarding (CEF), VPI/VCI indexing to service profile, and RADIUS interim accounting record generation. For more information about SSG enhancements, see the Node Route Processor-Service Selection Gateway Enhancements feature module.
New Software Features in Release 12.0(3)DC
Point-to-Point Protocol over Ethernet
The Cisco 6400 NRP now supports Point-to-Point Protocol over Ethernet (PPPoE), which allows you to configure PPP over Ethernet on ATM using a virtual circuit (VC) multiplexed encapsulation mode. Using a PPPoE client, a PPP session can be initiated on a simple bridged Ethernet connected client through a standard Digital Subscriber Line (DSL) modem. The session is transported over the ATM DSL link via RFC 1483 Ethernet bridged frames and terminated in the Cisco 6400 NRP. The Cisco 6400 NRP does not support PPPoE on the Fast Ethernet port.
For more information about PPPoE, see the PPP over Ethernet feature module.
Node Route Processor—Service Selection Gateway
The Node Route Processor-Service Selection Gateway (NRP-SSG) is a switching solution for service providers who offer intranet, extranet and Internet connections to subscribers using high-speed data circuit equipment (DCE) such as Asymmetric Digital Subscriber Line (ADSL) equipment to allow simultaneous access to network services. The NRP-SSG allows the Cisco 6400 to act as a central control point for Layer 2 and Layer 3 services. This can include services available through ATM VCs, virtual private dial-up networks (VPDNs) or normal routing methods. The NRP-SSG feature is designed to work with the Cisco Service Selection Dashboard version 2.1 for Layer 3 services available on CCO.
For more information about the Service Selection Gateway, see the Node Route Processor—Service Selection Gateway feature module
Pre-Existing NRP Hardware Caveats
This section describes possible unexpected behavior by earlier hardware versions of the NRP.
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Affected Part Number: 800-03785-03
Symptom:
While the NSP is in Slot 0A of a single NSP system, the NRPs reset during NSP reloads or resets.
Workaround:
In a non-redundant system using an NSP of P/N 800-03785-03, place the NSP in Slot 0B.
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Affected Part Numbers:
800-03655-01, 800-03655-02, 800-03655-03, 800-03655-04
Symptoms:
Regardless of any boot system global configuration command entries in the startup configuration, the NRP boots the first image in flash after a reset. This problem occurs after one of the following actions:
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Workaround:
To avoid this problem, make sure that the desired image is the first file on the flash device. Complete the following steps in EXEC mode:
1
2
3
4
Recovery:
If you encounter the problem before implementing the workaround, reset the NRP once by using the hw-module slot number reset EXEC command on the NSP. As long as the NSP sends a single reset to the NRP, the NRP does not ignore the boot system global configuration command entries in the startup configuration.
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Affected Part Numbers:
800-03655-04, 800-03655-05, 800-03655-06
Symptoms:
With or without redundancy configured, an NRP inserted into a live system might reset the NRP in the adjacent slot of the slot pair. NRP slot pairs are slots 1-2, 3-4, 5-6, and 7-8.
Workaround (use one of the following):
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•
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Affected Part Number: 800-03655-01
Symptoms:
When the terminal server is configured such that hardware flow control is enabled on the port attached to the NRP console, the NRP console port does not respond.
Workaround:
Configure your terminal server to disable hardware flow control on the port attached to the NRP console.
Determining Your NRP Part Number
To determine the NRP part number, use one of the following methods along with Table 3:
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•
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The following example displays the show nrp command output for an NRP with part number 73-3082-06:
6400-nrp# show nrpRouter installed in slot 5Network IO Interrupt Throttling:throttle count=0, timer count=0active=0, configured=0netint usec=4000, netint mask usec=200NRP CPU ID EEPROM:Hardware revision 4.255 Board revision A0Serial number 12346818 Part number 73-3082-06
Test history 0x0 RMA number 00-00-00EEPROM format version 2EEPROM contents (hex):0x00: 02 E3 04 FF 00 BC 65 C2 49 0E 26 05 00 00 00 000x10: 50 00 00 00 07 CF 04 09 00 00 00 78 00 00 00 006400-nrp#Table 3 NRP Part Numbers
Software Caveats
This section contains open caveats for the current Cisco 6400 NRP release only. Caveats in Cisco IOS Release 12.0 also apply to Release 12.0(7)DC1. For information about caveats in the Cisco IOS Release 12.0, refer to the "Caveats" sections in the Cross-Platform Release Notes for Cisco IOS Release 12.0 document located on CCO and the Documentation CD-ROM.
In addition, caveats from Cisco IOS Release 11.3(9)DB2 and Cisco IOS Release 12.0(5)DC also apply to Cisco IOS Release 12.0(7)DC1. Information regarding these caveats can be found in Release Notes for Cisco 6400 NRP for Cisco IOS Release 11.3(9)DB2 and Release Notes for Cisco 6400 NRP for Cisco IOS Release 12.0(5)DC, respectively.
Note
Open Caveats - Release 12.0(7)DC1
There are no open caveats specific to Cisco IOS Release 12.0(7)DC1 that require documentation in the release notes.
Resolved Caveats - Release 12.0(7)DC1
All the caveats listed in this section are resolved in Release 12.0(7)DC1. This section describes severity 1, 2, and selected severity 3 caveats.
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An error can occur with management protocol processing. Please use the following URL for further information:
http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCdw65903
Open Caveats - Release 12.0(7)DC
This section describes possibly unexpected behavior by Release 12.0(7)DC. This section describes severity 1, 2, and selected severity 3 caveats.
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After all NRP-SSG users log off a specific service, the service object is cleared, but the subblock associated with the interface is not reset. As a result, all traffic from the interface is still treated by NRP-SSG as downstream traffic.
Workaround (do one of the following):
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•
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Changing service binding while using the service might cause an inconsistency in the service binding table and break the NRP-SSG data path forwarding table.
Workaround: Avoid changing service binding while the service is in use.
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Problem symptom: The NRP ATM interface stops to transmit. (This problem only happens at one customer's site). We can not reproduce the problem in the "DevTest" lab and have not received any other customer's report on this problem.
Workaround: issue a shut command followed by a no shut command.
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The traffic coming from FE interface on the NRP, with ISL encapsulation, forwarded out of the ATM RBE interface, might not be fast-switched but process switched when bridge irb is configured on the NRP.
The workaround is to remove the "bridge irb" statement from the configuration.
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PPPoE sessions terminated on a 6400 do not release IP addresses in the pool. This exhausts the pool way too fast. There is no workaround.
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CPU hog messages appear on the NRP console when performing a shutdown/no shutdown on the ATM interface of the NRP configured with 2000 RBE sessions. This might cause RBE traffic to freeze. There is no workaround.
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Sometimes the escape sequence does not work on the NRP. For example, during an extended ping, one is unable to escape using either the default escape sequence CTRL+SHFT+6,x or a user defined one such as "escape-character 3" on the console "line con 0". There is no workaround.
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When aal5cisco encapsulation is used, traffic with 1514 packet size coming from L2TP session to PPPoA client experiences a performance drop when compared with that of Cisco IOS Release 12.0(5)DC. For other packet sizes or other encapsulations (such as aal5mux), the performance number is comparable to Cisco IOS Release 12.0(5)DC.
Workaround: Change the encapsulation to aal5mux.
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The upstream traffic for PPPOE is not showing up under the main ATM interface counters. If you send packets from a PPPOE client, the ATM interface counters for the ingress direction will not increase.
There is no workaround.
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When an NRP-SSG subscriber exceeds the maximum number of services determined by the ssg maxservice global configuration command, the Cisco SSD incorrectly displays the following message: "The server returned an invalid or unrecognized response."
The correct message reads: "You have reached the maximum allowed number of concurrently logged in services for your system, host-ID. Please logoff of at least one service, and try your service logon request again."
Workaround: Simply click the "Ok" button to recognize the error, and select the service on the viewService frame again. The correct message will appear.
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The NRP-LNS occasionally crashes if you enter the following command sequence with a configuration of 50 tunnels and 1326 PPPoA sessions: (1) write erase, (2) reload, (3) copy tftp running-config.
Workaround: Avoid the stated operation sequence.
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Using WebConsole, when you click the "configure" button for an NRP, you might get an error message in your browser indicating that the browser cannot locate the server. There is no known workaround.
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Cisco IOS Release 12.0(7)DC supports L2TP as a service type. When you have a L2TP service type configured, the subscriber can start the service using the Cisco SSD. The subscriber can also start the service using PPPoA or PPPoE if you have configured this service as "Auto logon" for this subscriber. This problem happens if you configured L2TP type of service with PPPoA or PPPoE. There is no workaround.
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Cisco IOS Release 12.0(7)DC supports L2TP as a service type. When you have a L2TP service type configured, the subscriber can start the service using the Cisco SSD. The subscriber can also start the service using PPPoA or PPPoE if you have configured this service as "Auto logon" for this subscriber. This problem happens if you configured L2TP type of service with PPPoA or PPPoE. There is no workaround.
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The vpdn softshut global configuration command does not function with NRP-SSG.
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The vpdn session-limit global configuration command does not function with NRP-SSG.
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If Cisco Express Forwarding (CEF) is turned on globally while using NRP-SSG with a PPPoA client and selected service type L2TP, NRP-SSG data-path forwarding breaks.
Workaround: Enter the no ip route-cache cef global configuration command for the affected interface.
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The command syntax help (using the "?" in the CLI) does not work for the ip wccp global configuration commands. To view the command menu, enter the show ip wccp EXEC command.
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When the Service Selection Gateway (SSG) is enabled after an upgrade from Cisco IOS Release 12.0(3) DC or Release 12.0(5) DC to Release 12.0(7) DC, the SSG transparent passthrough feature is no longer supported.
Workaround: To enable non-SSG connections to pass through the NRP, disable the SSG with the no ssg enable command.
Resolved Caveats - Release 12.0(7)DC
All the caveats listed in this section are resolved in Release 12.0(7)DC. This section describes severity 1, 2, and selected severity 3 caveats.
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By turning on fast switching on an ATM subinterface doing RFC1483 routing, IP connectivity is lost.
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The 6400 NRP FE interface cannot be run in full-duplex mode.
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This bug deals with inconsistent alarm reporting of FE ports on the NRP. If there is no cable in the FE port of the NRP some Cisco 6400s will display and alarm and others will not. This needs to be made consistent. Also no alarm should be reported if the port is in "admin down" state.
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If a permanent virtual circuit (PVC) or virtual channel identifier (VCI) is added to a subinterface and then an identifier is added, the router might reload with memory corruption after exiting the configuration mode. There is no workaround.
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PPPoE compatibility with other vendors products.
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A Cisco 6400 node route processor (NRP) that is running Cisco IOS Release 12.0(3)DC might receive a malformed packet. In this situation, the NRP declares the RADIUS server dead. There is no workaround.
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NRP-SSG does not switch anymore if NRP only is reloaded.
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Erroneous RADIUS accounting logging on the remote RADIUS server.
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When configuring several hundred PPPoA VCs under a single sub-interface via the use of a VC-class statement, some of the VCs may end up with a Virtual-Access Interface Number of 0. The only way to get a valid VA number and get the VC functional is to delete it and reconfigure it.
To avoid this problem you have a number of options:
a) Do not use VC-class statements
b) Netboot the config, and ensure when netbooting the config that the physical interface is shutdown prior to configuring, and then bring it up.
Example:
...int atm 2/0shutint atm 2/0.1 multipointpvc DSLAIC32 1/32...int atm 2/0.2 multi....int atm 2/0no shutint eth 3/0...A possible third solution that has not had much lab testing is to reduce the number of VCs in each sub-int that is using VC-class statements to the teens.
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On an NRP configured for PPPoA, it is possible to end up in a situation where subscriber traffic is able to reach the Cisco 6400, but does not pass through it. In other words, you can ping the FE interface but not beyond. This is caused by an NRP-SSG host object being created for the PPPoA session and the packets are dropped by NRP-SSG.
To work-around this problem, please configure ssg disable or split the subscriber traffic between multiple NRPs with the SSG traffic going to 1 NRP, and the non-SSG traffic going to a second NRP.
•
Router crash in pref__C9RWCString on NRP.
•
PPPoE sessions are not CEF/fast-switched.
•
A 6400 NRP running PPPoE and IRB simultaneously might see some spurious memory accesses. This problem does not seem to have any adverse impact on the router.
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Issuing a telnet session to the NRP via to ethernet port, And we then request a connection to a remote device connected On the ATM side, if "pasting" too much data at once on the session The router will freeze on almost all connected port, except the console. The ATM 0/0/0 will show a lot of input-queue drops and will be wedge. The ethernet port doesn't report anything particular.
To this was the way the problem was reproduce, the problem occur At customer site also, in that case it is not very clear what the cause Is but the problem is identical as well as the symptoms.
A loss of connections to the NRP, is also reported by The customer, while I was doing the test, I also notice, that my telnet get very slow, when this occur, sometimes we cannot recover.
The console is always accessible.
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RADIUS attribute 43 is sent with value=0 in Radius Accounting updates.
That attribute is supposed to report the amount of traffic an end-user has generated during his session.
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When Radius/AAA is configured on the Cisco 6400 and accessed, the Cisco 6400 will reboot. The stack dump shows that everything is normal.
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NRP crashes on receipt of RADIUS packet.
Related Documentation
This section describes the documentation related to the Cisco 6400 UAC NRP, typically including hardware installation guides, software installation guides, Cisco IOS configuration and command references, system error messages, and feature modules that are updates to the Cisco IOS documentation set. Documentation is available as printed manuals or electronic documents, except for the feature modules that are available online only.
You can find the most up-to-date documentation on the Web via Cisco Connection Online (CCO) and the Documentation CD-ROM. These electronic documents might contain updates and modifications made after the hard copy documents were printed.
These release notes should be used with the documents listed in the following sections:
•
Release-Specific Documents
The following documents are specific to Release 12.0 T. They are located on CCO and the Documentation CD-ROM:
•
To access the cross-platform Release Notes for Cisco IOS Release 12.0 T on CCO, follow this path:
Service and Support: Technical Documentation: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cross-Platform Release Notes
To access the cross-platform Release Notes for Cisco IOS Release 12.0 on the Documentation CD-ROM, follow this path:
Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cross-Platform Release Notes
•
To access these documents, refer to the Software Center at this path on CCO:
Service and Support: Technical Documentation
•
As a supplement to the caveats listed in the "Caveats" section in these release notes, see the Caveats for Cisco IOS Release 12.0 T document, which contains caveats applicable to all platforms for all maintenance releases of Release 12.0 T.
To access the caveat document on CCO, follow this path:
Service and Support: Technical Documentation: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Caveats: Caveats for Cisco IOS Release 12.0 T
To access the caveat document on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS 12.0: Caveats: Caveats for Cisco IOS Release 12.0 T
Note
Platform Documents
The documents listed in are available for the Cisco 6400 UAC. These documents are also available online at Cisco Connection Online (CCO) and on the Documentation CD-ROM.
To access Cisco 6400 documentation on CCO, follow this path:
Service and Support: Technical Documents: Documentation Home Page: DSL Products: Cisco 6400
To access Cisco 6400 documentation on the Documentation CD-ROM, follow this path:
DSL Products: Cisco 6400
Feature Modules
Feature modules describe new features supported by each Cisco IOS Release, and are only available online. Each feature module consists of a brief overview of the feature, benefits, configuration tasks, and a command reference for new and modified commands.
To reach the feature modules for Cisco IOS Release 12.0(7)DC1 on the CCO home page, click on this path:
Service & Support: Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation: New Features in 12.0-Based Limited Lifetime Releases: New Features in Release 12.0DC: New Features in Release 12.0(7)DC
To reach the feature modules for Cisco IOS Release 12.0(7)DC on the Documentation CD-ROM, click on this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation: New Features in 12.0-Based Limited Lifetime Releases: New Features in Release 12.0DC: New Features in Release 12.0(7)DC
Cisco IOS Software Document Set
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents. These documents are 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 two books: a configuration guide and a corresponding command reference. 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. Each configuration guide can be used in conjunction with its corresponding command reference.
To reach these documents on CCO, click on this path:
Service and Support: Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References
To reach these documents on the Documentation CD-ROM, click on this path:
Cisco IOS Software Configuration: Cisco IOS Release 12.0: Cisco IOS Release 12.0 Configuration Guides and Command References
To access documentation related to an index entry, click on the page number following the entry.
Release 12.0 Documentation Set
details the contents of the Cisco IOS Release 12.0 software documentation set. The document set is available in electronic form, and also in printed form upon request.
Note
To access the Cisco IOS documentation set on CCO, follow this path:
Service and Support: Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0
You can reach the Cisco IOS documentation set on the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0
Service and Support
For service and support for a product purchased from a reseller, contact the reseller. Resellers offer a wide variety of Cisco service and support programs, which are described in the section "Service and Support" in the information packet shipped with your product.
Note
For service and support for a product purchased directly from Cisco, use CCO.
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
If you have a CCO login account, you can access the following URL, which contains links and tips on configuring your Cisco products:
http://www.cisco.com/kobayashi/technotes/serv_tips.shtml
This URL is subject to change without notice. If it changes, point your Web browser to CCO and click on this path: Technical Assistance Center: Technical Tips.
The following sections are provided from the Technical Tips page:
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Cisco Connection Online
Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access CCO in the following ways:
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For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
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Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more current than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
If you are reading Cisco product documentation on the World Wide Web, you can submit comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.
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