Release Notes for Circuit Emulation over IP for Cisco IOS Release 12.3(7)T1

Circuit Emulation over IP (CEoIP) provides a virtual circuit through an IP network—similar to a leased line—to integrate solutions that require a time-sensitive, bit-transparent transport into IP networks. The data, either with proprietary framing or without, arrives at its destination unchanged; the transport is transparent to the destination.

System Requirements

This section contains information about memory recommendations, hardware, and software information.

Memory Recommendations

Cisco Feature Navigator is a web-based tool that enables you to determine which Cisco IOS software images support a specific set of features and which features are supported in a specific Cisco IOS image. You can search by feature or by feature set (software image). Under the release section, you can compare Cisco IOS software releases side by side to display both the features unique to each software release and the features that the releases have in common.

To access Cisco Feature Navigator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:

Cisco Feature Navigator is updated regularly when major Cisco IOS software releases and technology releases occur. For the most current information, go to the Cisco Feature Navigator home page at the following URL:

For frequently asked questions about Cisco Feature Navigator, see the FAQs at the following URL:

Determining Memory Recommendations for Software Images (Feature Sets)

To determine memory recommendations for software images (feature sets) in Cisco IOS Release 12.3 T, go to the Cisco Feature Navigator home page, enter your Cisco.com login, and perform the following steps.

Step 1

From the Cisco Feature Navigator home page, click Search by feature.

Step 2

To find the memory recommendations, use either "Search by full or partial feature name" or "Browse features in alphabetical order." Either a list of features that match the search criteria or a list of features that begin with the number or letter selected from the ordered list will be displayed in the Features available text box on the left side of the web page.

Step 3

Select a feature from the Features available text box, and click the Add button to add a feature to the Features selected text box on the right side of the web page.

Note

To learn more about a feature in the list, click the Show Description(s) button below the Features available text box.

Repeat this step to add additional features. A maximum of 20 features can be chosen for a single search.

Step 6

From the Release drop-down menu, choose the appropriate maintenance release.

Step 7

From the Platform drop-down menu, select the appropriate hardware platform. The "Search Results" table will list all the software images (feature sets) that support the feature(s) that you selected, plus the DRAM and flash memory recommendations for each image.

Hardware Supported

Determining the Software Version

To determine the version of Cisco IOS software that is running on the router, log in to the router and enter the show version EXEC command:

Feature Support

Cisco IOS software is packaged in feature sets that consist of software images that support specific platforms. The feature sets available for a specific platform depend on which Cisco IOS software images are included in a release. Each feature set contains a specific set of Cisco IOS features.

The feature set tables have been removed from the Cisco IOS Release 12.3 T release notes to improve the usability of the release notes documentation. The feature-to-image mapping that was provided by the feature set tables is available through Cisco Feature Navigator.

For frequently asked questions about Cisco Feature Navigator, see the FAQs at the following URL:

Determining Which Software Images (Feature Sets) Support a Specific Feature

To determine which software images (feature sets) in Cisco IOS Release 12.3 T support a specific feature, go to the Cisco Feature Navigator home page, enter your Cisco.com login, and perform the following steps.

Step 1

From the Cisco Feature Navigator home page, click Search by feature.

Step 2

To find a feature, use either "Search by full or partial feature name" or "Browse features in alphabetical order." Either a list of features that match the search criteria or a list of features that begin with the number or letter selected from the ordered list will be displayed in the Features available text box on the left side of the web page.

Step 3

Select a feature from the Features available text box, and click the Add button to add a feature to the Features selected text box on the right side of the web page.

Note

To learn more about a feature in the list, click the Show Description(s) button below the Features available text box.

Repeat this step to add additional features. A maximum of 20 features can be chosen for a single search.

Step 6

From the Release drop-down menu, choose the appropriate maintenance release.

Step 7

From the Platform drop-down menu, select the appropriate hardware platform. The "Search Results" table will list all the software images (feature sets) that support the feature(s) that you selected.

Determining Which Features Are Supported in a Specific Software Image (Feature Set)

To determine which features are supported in a specific software image (feature set) in Cisco IOS Release 12.3 T, go to the Cisco Feature Navigator home page, enter your Cisco.com login, and perform the following steps.

Step 1

From the Cisco Feature Navigator home page, click Compare Images, and then Search by Release.

Step 2

In the "Find the features in a specific Cisco IOS release, using one of the following methods:" area, choose 12.3T from the Cisco IOS Major Release drop-down menu.

Step 4

From the Release drop-down menu, choose the appropriate maintenance release.

Step 5

From the Platform drop-down menu, choose the appropriate hardware platform.

Step 6

From the Feature Set drop-down menu, choose the appropriate feature set. The "Search Results" table will list all the features that are supported by the feature set (software image) that you selected.

New and Changed Information

New failure Command

The time parameter has a range of 50 to 60000 milliseconds, with a default of 2000 milliseconds. Any value entered is rounded up to the next multiple of 50 milliseconds.

The failure activation time specifies how long the software waits from the detection of the failure of a circuit emulation (CEM) connection (as determined by an underflow of the egress dejitter buffer) until the CEM channel is put into the failed state.

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The failed state for a serial channel (on an NM-CEM-4SER) is defined by the existing control-lead state command, where the failed state for each egress control lead is specified.

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The failed state for a T1/E1 channel (on an NM-CEM-4TE1) is defined by the existing signaling command, which is enhanced as described in the "signaling Command Changes" section.

The failure deactivation time specifies how long the software waits from the detection of the repair of a CEM connection (as determined by the egress dejitter buffer returning to its intended half-full state) until the CEM channel is taken out of the failed state and returned to the active, or up, state.

•

The active state for a serial channel (on an NM-CEM-4SER) is defined by the existing control-lead state command where the active state for each egress control lead is specified.

•

The active state for a T1/E1 channel (on an NM-CEM-4TE1) is defined as carrying the ABCD signaling bits transparently from end to end.

signaling Command Changes

If the optional on-hook pattern, off-hook pattern, and time parameters are not specified, the defaults given in the following table apply.

Parameter	T1 Default	E1 Default
On-hook pattern	5 hex	D hex
Off-hook pattern	F hex	5 hex
Time	2000	2000

When a T1/E1 channel with signaling enabled is placed in the failed state (after the failure activation time previously described), the on-hook pattern is sent to the attached device for a duration specified by the time parameter. Then, the off-hook pattern is sent to the attached device for as long as the CEM connection remains failed.

The on-hook pattern parameter specifies, as a single hexadecimal character, the ABCD signaling bits sent to the attached device (typically a PBX) to simulate the remote PBX sending notification that any call in progress has been terminated or is on-hook. This provides a forced disconnect of any calls when the CEM connection fails.

The off-hook pattern parameter specifies, as a single hexadecimal character, the ABCD signaling bits sent to the attached device (typically a PBX) to simulate the remote PBX sending notification that a channel is already in use, or is off-hook. This prevents the attached PBX from trying to use the (failed) channel to place a new call while the CEM connection remains failed.

The time parameter has a range of 50 to 5000 milliseconds. Any value entered is rounded up to the next multiple of 50 milliseconds.

Caveats

Caveats describe unexpected behavior or defects in the Cisco IOS software releases. Severity 1 caveats are the most serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these three severity levels.

For information on caveats in Cisco IOS Release 12.3 T, refer to the Caveats for Cisco IOS Release 12.3 T document, which lists severity 1 and 2 caveats and select severity 3 caveats for Cisco IOS Release 12.3 T and is located on Cisco.com.

Note

If you have an account with Cisco.com, you can also use the Bug Toolkit to find select caveats of any severity. To reach the Bug Toolkit, log in to Cisco.com and click Service & Support: Technical Assistance Center: Tool Index: Bug Toolkit. Another option is to go to http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl.

Open Caveats - Release 12.3(7)T1

Resolved Caveats - Release 12.3(7)T1

Add configurable timers for failure template switchover for serial network module.

A new failure command is added. For more information, see the "New failure Command" section.

When the NM-CEM-4TE1 CAS T1 controller goes down, the remote T1 signal is not updated.

Related Documentation

Platform-Specific Documents

For information about the Cisco 2600, Cisco 3600, and Cisco 3700 series routers, refer to the documents at the following location:

Feature Modules

For information about configuring the CEoIP feature, refer to the Circuit Emulation over IP feature module at the following location:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123t/123t_7/bbfeamod.htm

Hardware Documents

For information about installing CEoIP network modules, refer to the "Connecting Circuit Emulation over IP Network Modules" chapter in the Cisco Network Modules Hardware Installation Guide at the following location:

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/hw_inst/nm_inst/nm-doc/ceoipnm.htm

Cisco IOS Software Documentation Set

The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents. The Cisco IOS software documentation set is shipped with your order in electronic form on the Documentation CD-ROM—unless you specifically ordered the printed versions.

Documentation Modules

Each module in the Cisco IOS documentation set consists of one or more configuration guides and one or more corresponding command references. Chapters in a configuration guide describe protocols, configuration tasks, and Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide with its corresponding command reference.

Products and Solutions: Cisco IOS Software: Cisco IOS Releases 12.3: Instructions and Guides

Cisco IOS Software: Cisco IOS Release 12.3: Configuration Guides and Command References

Cisco IOS Release 12.3 Documentation Set Contents

Table 1 lists the contents of the Cisco IOS Release 12.3 software documentation set, which is available in electronic form and in printed form if ordered.

Products and Solutions: Cisco IOS Software: Cisco IOS Releases 12.3: Instructions and Guides


Books	Major Topics
•Cisco IOS AppleTalk, DECnet, ISO CLNS, and Novell IPX Configuration Guide •Cisco IOS AppleTalk, DECnet, ISO CLNS, and Novell IPX Command Reference	AppleTalk DECnet ISO CLNS Novell IPX
•Cisco IOS Bridging and IBM Networking Configuration Guide •Cisco IOS Bridging and IBM Networking Command Reference, Volume 1 of 2: Bridging •Cisco IOS Bridging and IBM Networking Command Reference, Volume 2 of 2: IBM Networking	Transparent Bridging SRB Token Ring Inter-Switch Link Token Ring Route Switch Module RSRB DLSw+ Serial Tunnel and Block Serial Tunnel LLC2 and SDLC IBM Network Media Translation SNA Frame Relay Access NCIA Client/Server Airline Product Set DSPU and SNA Service Point SNA Switching Services Cisco Transaction Connection Cisco Mainframe Channel Connection CLAW and TCP/IP Offload CSNA, CMPC, and CMPC+ TN3270 Server
•Cisco IOS Configuration Fundamentals and Network Management Configuration Guide •Cisco IOS Configuration Fundamentals and Network Management Command Reference	Configuration Fundamentals Overview Cisco IOS User Interfaces File Management System Management
•Cisco IOS Dial Technologies Configuration Guide •Cisco IOS Dial Technologies Command Reference	Preparing for Dial Access Modem and Dial Shelf Configuration and Management ISDN Configuration Signaling Configuration Dial-on-Demand Routing Configuration Dial Backup Configuration Dial Related Addressing Service Virtual Templates, Profiles, and Networks PPP Configuration Callback and Bandwidth Allocation Configuration Dial Access Specialized Features Dial Access Scenarios
•Cisco IOS Interface and Hardware Component Configuration Guide •Cisco IOS Interface and Hardware Component Command Reference	LAN Interfaces Serial Interfaces Logical Interfaces
•Cisco IOS IP Configuration Guide •Cisco IOS IP Command Reference, Volume 1 of 4: Addressing and Services •Cisco IOS IP Command Reference, Volume 2 of 4: Routing Protocols •Cisco IOS IP Command Reference, Volume 3 of 4: Multicast •Cisco IOS IP Command Reference, Volume 4 of 4: IP Mobility	IP Addressing and Services IP Routing Protocols IP Multicast
•Cisco IOS IPv6 Configuration Library •Cisco IOS IPv6 Command Reference	Implementing Basic Connectivity for IPv6 Implementing Multiprotocol BGP for IPv6 Implementing IS-IS for IPv6 Implementing Multicast for IPv6 Implementing RIP for IPv6 Implementing IPv6 over MPLS Managing Cisco IOS Applications over IPv6 Implementing ADSL and Deploying Dial Access for IPv6 Implementing NAT-PT for IPv6 Implementing QoS for IPv6 Implementing Security for IPv6 Implementing Tunneling for IPv6 Implementing Static Routes for IPv6 Implementing OSPF for IPv6
•Cisco IOS Mobile Wireless Configuration Guide •Cisco IOS Mobile Wireless Command Reference	General Packet Radio Service
•Cisco IOS Quality of Service Solutions Configuration Guide •Cisco IOS Quality of Service Solutions Command Reference	Packet Classification Congestion Management Congestion Avoidance Policing and Shaping Signaling Link Efficiency Mechanisms
•Cisco IOS Security Configuration Guide •Cisco IOS Security Command Reference	AAA Security Services Security Server Protocols Traffic Filtering and Firewalls IP Security and Encryption Passwords and Privileges Neighbor Router Authentication IP Security Options Supported AV Pairs
•Cisco IOS Switching Services Configuration Guide •Cisco IOS Switching Services Command Reference	Cisco IOS Switching Paths NetFlow Switching Multiprotocol Label Switching Multilayer Switching Multicast Distributed Switching Virtual LANs LAN Emulation
•Cisco IOS Terminal Services Configuration Guide •Cisco IOS Terminal Services Command Reference	ARA LAT NASI Telnet TN3270 XRemote X.28 PAD Protocol Translation
•Cisco IOS Voice Configuration Library •Cisco IOS Voice Command Reference	Voice over IP Call Control Signaling Voice over Frame Relay Voice over ATM Telephony Applications Trunk Management Fax, Video, and Modem Support
•Cisco IOS Wide-Area Networking Configuration Guide •Cisco IOS Wide-Area Networking Command Reference	ATM Broadband Access Frame Relay SMDS X.25 and LAPB
•Cisco IOS Debug Command Reference •Cisco IOS Master Commands List •Cisco IOS New and Modified Commands •Cisco IOS Software System Messages •New Features in Cisco IOS Release 12.3

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