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Note You can find the most current Cisco IOS documentation on Cisco Connection Online (Cisco.com). These electronic documents may contain updates and modifications made after the hardcopy documents were printed. |
These release notes for the Cisco AS5400 universal gateway describe the enhancements provided in Cisco IOS Release 12.1(5)T. These release notes are updated as needed.
For a list of the software caveats that apply to Cisco IOS Release 12.1(5)T8, see C aveats for Cisco IOS Release 12.1. The caveats document is updated for every maintenance release and is located on Cisco Connection Online (Cisco.com ) and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.1 located on Cisco.com and the Documentation CD-ROM.
These release notes describe the following topics:
The Cisco AS5400 is a versatile data communications platform that provides high performance, high density, and hot swappability in only two rack units. The Cisco AS5400 is intended for large companies and service providers who require dense and scalable solutions to create new multiservice access networks, replace existing access server hardware, or expand and enhance their current access offering.
For information on new features and Cisco IOS commands supported by Cisco IOS Release 12.1(5)T8, see the "New and Changed Information" section and the "Related Documentation" section.
This section describes the system requirements for Cisco IOS Release 12.1 T:
Memory recommendations for the Cisco AS5400 are presented in Table 1.
| Image Name | Software Image | Recommended Flash Memory |
Recommended DRAM Memory |
Runs From |
|---|---|---|---|---|
Cisco IOS Release 12.1 T supports the Cisco AS5400. The supported interfaces and dial feature cards are detailed in Table 2.
For detailed descriptions of the new hardware features, see the "New and Changed Information" section.
| Interfaces and Dial Feature Cards | Product Description |
|---|---|
| Dial Feature Cards | |
| LAN Interfaces | |
| WAN Interface Options | |
To determine the version of Cisco IOS software running on your Cisco AS5400, log in to the Cisco AS5400 and enter the show version EXEC command:
For general information about upgrading to a new software release, see Cisco IOS Upgrade Ordering Instructions located at:
http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/957_pp.htm
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.
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Caution Cisco IOS images with strong encryption (including, but not limited to 168-bit (3DES) data encryption feature sets) are subject to United States government export controls and have limited distribution. Strong encryption images to be installed outside the United States are likely to require an export license. Customer orders may be denied or subject to delay due to United States government regulations. When applicable, purchaser/user must obtain local import and use authorizations for all encryption strengths. Please contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com. |
Table 3 lists the features and feature sets supported by the Cisco AS5400 in Cisco IOS Release 12.1(5)T and uses the following conventions:
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Note This table might not be cumulative or list all the features in each image. You can find the most current Cisco IOS documentation on Cisco.com. These electronic documents may contain updates and modifications made after the hardcopy documents were printed. If you have a Cisco.com login account, you can find image and release information regarding features prior to Cisco IOS Release 12.1 T by using the Feature Navigator tool at: http://www.cisco.com/go/fn . |
| 1The number in the "In" column indicates the Cisco IOS release when the interface was introduced. For example, (1) means an interface was introduced in Cisco IOS Release 12.1(1)XD. If a cell in this column is empty, the interface was included in the initial base release. |
The following sections list the new hardware and software features supported by the Cisco AS5400 for Cisco IOS Release 12.1 T.
The are no new hardware features in the Cisco AS5400 for Cisco IOS Release 12.1(5)T.
The following new software features are supported by the Cisco AS5400 for Cisco IOS Release 12.1(5)T.
The AutoInstall Using DHCP for LAN Interfaces feature replaces the use of the Bootstrap Protocol (BOOTP) with the use of the Dynamic Host Configuration Protocol (DHCP) for Cisco IOS AutoInstall over LAN interfaces. AutoInstall is a Cisco IOS software feature that provides for the configuration of a new routing device automatically when the device is initialized. DHCP (defined in RFC 2131) is based on the Bootstrap Protocol, which provides the framework for passing configuration information to hosts on a TCP/IP network. DHCP adds the capability of automatic allocation of reusable network addresses and additional configuration options. In Cisco IOS release 12.1(5)T, the IP address procurement phase of the AutoInstall process is now accomplished using DHCP for Ethernet, Token Ring, and FDDI interfaces. Before this release, IP addresses for LAN interfaces were obtained using BOOTP during the AutoInstall process. The AutoInstall Using DHCP for LAN Interfaces feature also allows the routing device to recognize IP address allocation messages coming from regular BOOTP servers, providing a seamless transition for those devices already using BOOTP servers for AutoInstall. Additionally, this feature allows for the uploading of configuration files using unicast Trivial File Transfer Protocol (TFTP).
For further details, please see: http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t5/dt_dhcpa.htm
Internet Group Management Protocol (IGMP) is a protocol used by IPv4 systems to report IP multicast group memberships to neighboring multicast routers. On networks with hosts directly attached, IGMP Version 3 (IGMPv3) adds support for "source filtering," which enables a multicast receiver to signal to a router which groups it wants to receive multicast traffic from, and from which source(s) this traffic is expected. Based on this membership information, Cisco IOS software only forwards traffic that is requested by the host (or by other routers via Protocol Independent Multicast [PIM]) to that network. In addition to restricting traffic on the network of the receiver host, IGMPv3 membership information can be propagated to multicast routing protocols to enable the forwarding of traffic from permitted sources or to restrict traffic from denied sources along the entire multicast data delivery path.
In the Source Specific Multicast (SSM) feature, introduced in Cisco IOS Release 12.1(5)T, hosts must explicitly include sources when joining a multicast group (this is known as "channel subscription"). IGMPv3 is the industry-designated standard protocol for hosts to signal channel subscriptions in SSM. In deployment cases where IGMPv3 cannot be used (for example, if it is not supported by the receiver host or its applications), there are two other mechanisms to enable SSM: URL Rendezvous Directory (URD) and IGMP v3lite. Both of these features were introduced with SSM in Cisco IOS Release 12.1(5)T.
One of the most commonly used identifiers in SNMP-based network management applications is the Interface Index (ifIndex) value. IfIndex is a unique identifying number associated with a physical or logical interface; as far as most software is concerned, the ifIndex is the "name" of the interface. Although there is no requirement in the relevant Requests for Comments (RFC) that the correspondence between particular ifIndex values and their interfaces be maintained across reboots, applications such as device inventory, billing, and fault detection increasingly depend on the maintenance of this correspondence.
Cisco IOS Release 12.1(5)T8 adds support for an ifIndex value that can persist across reboots, enabling users to avoid the workarounds previously required for consistent interface identification. The Interface Index Persistence feature allows for greater accuracy when collecting and processing network management data by uniquely identifying input and output interfaces for traffic flows and SNMP statistics. Relating each interface to a known entity (such as an ISP customer) enables network management data to be used more effectively. See the following document for further information:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t5/dt5ifidx.htm.
The Interface Range Specification feature allows specification of a range of interfaces to which subsequent commands are applied and supports definition of macros that contain an interface range. The Interface Range Specification feature is implemented with the range keyword, which is used with the interface command. In the interface configuration mode with the range keyword, all entered commands are applied to all interfaces within the range until you exit interface configuration mode.
This feature provides enhancements to improve the visibility into the line and modem status for the network access server (NAS).
NAS modem health is supported by the following features:
These features have been developed to monitor the NAS health conditions at the digital signal level zero (DS-0) level, Primary Rate Interface (PRI) bearer channel level, and modem level.
This combined set of features provides the following benefits:
Microsoft NetMeeting is a Windows-based application that enables multiuser interaction and collaboration from a user's PC over the Internet or an intranet. Support for the NetMeeting Directory (ILS) allows connections by name from the directory built into the NetMeeting application. Destination IP addresses do not need to be known in order for a connection to be made.
The Parser Cache feature optimizes the parsing (translation) of Cisco IOS software configuration command lines by remembering how to parse recently encountered command lines. This feature was developed to improve the scalability of the Cisco IOS software command-line interface (CLI) parser when processing large configuration files. This improvement is especially useful for those cases in which thousands of virtual circuits must be configured for interfaces, or hundreds of access control lists (ACLs) are required. The parser chain cache can rapidly recognize and translate configuration lines that differ slightly from previously used configuration lines (for example, pvc 0/100, pvc 0/101, and so on). Testing indicates an improvement to load time of between 30% and 36% for large configuration files when using the parser cache.
The parser cache is enabled by default on all platforms using Cisco IOS 12.1(5)T8 or later. A new command, [no] parser cache, allows the disabling or reenabling of this feature.
The PIM Dense Mode State Refresh feature keeps the pruned state in PIM dense mode from timing out by periodically forwarding a control message down the source-based distribution tree. The control message refreshes the prune state on the outgoing interfaces of each router in the distribution tree.
The Router-Port Group Management Protocol (RGMP) feature introduces a Cisco protocol that restricts IP multicast traffic in switched networks. RGMP is a Layer 2 protocol that enables a router to communicate to a switch (or a networking device that is functioning as a Layer 2 switch) the multicast group for which the router would like to receive or forward traffic.
There are no new hardware feature in the Cisco AS5400 for Cisco IOS Release 12.1(3a)T1.
The following new software features are supported by the Cisco AS5400 for Cisco IOS Release 12.1(3a)T1:
The NextPort port service management feature implements digital service port technology for the Cisco AS5400. Ports on the Nextport modem carrier module support both modem and digital services. Ports can be addressed aggregated at the slot level of the Nextport module, the Service Processing Element (SPE) level within the Nextport module, and the individual port level. The Service Processing Element (SPE) is an addressable group of six modems. The Nextport dial feature card is supported by Service Processing Element (SPE) operating software.
Benefits include the following:
For complete information about NextPort Port Service Management for the Cisco AS5400 Universal Access Server, see the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t3/nextport/dtnxptxd.htm
The Preauthentication with ISDN PRI and Channel-Associated Signaling feature allows a Cisco network access server (NAS) to determine if an incoming call may be answered on the basis of the called number, the calling number, or the call type. With an ISDN PRI (Primary Rate Interface), or with Channel-Associated Signaling (CAS), information about an incoming call is available to the NAS before the call is answered. The available call information includes the called station ID (DNIS), the calling station ID (CLID), and the bearer capability (call type).
When an incoming call arrives from the public network switch, but before it is answered, this feature enables the NAS to send the DNIS, CLID, and call type to a RADIUS server for authorization. If the server authorizes the call, then the NAS accepts the call. If the server does not authorize the call, then the NAS sends a disconnect message to the public network switch to reject the call. This feature supports the use of attribute 44 by the RADIUS server application, which allows user authentication based on the CLID at the same time.
This feature also supports the use of new RADIUS attributes. These RADIUS attributes are configured in the RADIUS preauthentication profiles to specify preauthentication behavior. They may also be used, for instance, to specify whether subsequent authentication should occur and, if so, what authentication method should be used.
In the event that the RADIUS server application becomes unavailable, this feature allows a guard timer to be set in the NAS. When the timer expires, the NAS uses a configurable parameter to accept or reject the incoming call without the authorization.
The MICA and microcom modems are not supported on the Cisco AS5400. Only modem and digital services are supported by using the NextPort dial feature card.
Old Cisco Management Information Bases (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 NMS applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 4.
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Note Cisco Management Information Base (MIB) User Quick Reference is no longer published. If you have an account with Cisco.com, you can find the current list of MIBs supported by Cisco. To reach the Cisco Network Management Toolkit, go to Cisco.com, press Login, and click to Software Center: Network Mgmt Products: Cisco Network Management Toolkit: Cisco MIB. |
The following section contains important notes about Cisco IOS Release 12.1(5)T that can apply to the Cisco AS5400.
Channelized T3 (CT3) modules on Cisco AS5400 series universal access servers select the T1 controller for clocking but when using the dial-tdm-clock global configuration command to configure the time-division multiplexing clock, if T1 controller one is selected to be the master, the software selects port two.
This has been resolved in Cisco IOS Release 12.1(5)T.
The last maintenance release of the 12.1 T release train is 12.1(5)T8. The migration path for customers who need bug fixes for the 12.1 T features is the 12.2 mainline release. The 12.2 mainline release has the complete feature content of 12.1 T and will eventually reach general deployment.
The last maintenance release was renamed from 12.1(4)T to 12.1(5)T8 to synchronize with its parent software base, the 12.1(5) mainline release, and to reflect that 12.1(5)T8 has all the bug fixes of the 12.1(5) mainline release. The 12.1 T release train is a superset of the 12.1 mainline release; hence any defect fixed in the 12.1 mainline is also fixed in 12.1 T. The set of features for 12.1(4)T is the same as that for 12.1(5)T. There was no change in the feature content of the release. The release was renamed so that the releases would be consistent with the Cisco release process.
For a list of the software caveats that apply to Cisco IOS Release 12.1(5)T8, see Caveats for Cisco IOS Release 12.1. The caveats document is updated for every maintenance release and is located on Cisco Connection Online (Cisco.com) and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.1 located on Cisco.com and the Documentation CD-ROM.
The following sections describe the documentation available for the Cisco AS5400. These documents consist of hardware and software installation guides, Cisco IOS configuration 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:
The following documents are specific to Cisco IOS Release 12.1 and are located on Cisco.com and the Documentation CD-ROM:
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: Release Notes: Cross-Platform Release Notes
See Caveats for Cisco IOS Release 12.1 and Caveats for Cisco IOS Release 12.1 T, which contain caveats applicable to all platforms for all maintenance releases of Cisco IOS Release 12.1 and Cisco IOS Release 12.1 T.
On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats
Feature modules describe new features supported by Cisco IOS Release 12.1 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
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents that are shipped with your order in electronic form on the Documentation CD-ROM—unless you specifically ordered the printed versions.
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, 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 and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set.
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
Table 5 describes 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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Note You can find the most current Cisco IOS documentation on Cisco.com and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hard-copy documents were printed. |
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
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Note Cisco Management Information Base (MIB) User Quick Reference is no longer published. If you have an account with Cisco.com, you can find the current list of MIBs supported by Cisco. To reach the Cisco Network Management Toolkit, go to CC, press Login, and click to Software Center: Network Mgmt Products: Cisco Network Management Toolkit: Cisco MIB. |
You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com. Translated documentation can be accessed at http://www.cisco.com/public/countries_languages.shtml.
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.
Registered Cisco.com 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.
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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 TAC by e-mail, use one of the following:
| Language | E-mail Address |
|---|---|
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.
If you have a Cisco.com log-in account, you can access the following URL, which contains links and tips on configuring your Cisco products:
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This URL is subject to change without notice. If it changes, point your Web browser to Cisco.com , press Login, and click on this path: Technical Assistance Center: Technical Tips.
The following sections are provided from the Technical Tips page:
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