Release Notes for Cisco IOS Release 11.2 P

June 30, 1997

These release notes describe the features and caveats for Cisco IOS Release 11.2 P, up to and including Release 11.2(7)P. Specific routers and access servers are affected by this software release. For detailed software configuration information on the new access server and router features and Cisco IOS commands supported by Release 11.2 P, refer to the Feature Guide for Cisco IOS Release 11.2 P.

This release note will no longer be updated with maintenance release information. As of Release 11.2(8)P, release notes are product specific. That is, there are separate release notes for each product line rather than one release note that covers all products. Refer to the particular product's release note for information about the release. For example, for information about Cisco 2500 series, refer to the Release Notes for the Cisco 2500 Series for Cisco IOS Release 11.2.

Prior to Cisco IOS Release 11.2, maintenance releases of major Cisco IOS software releases were used to deliver additional new features. Beginning with Cisco IOS Release 11.2, Cisco Systems provides as many as three software release "trains" based on a single version of Cisco IOS software. Maintenance releases of the Major train software deliver fixes to software defects only, thus providing the most stable software for your network, for the features you need.

In addition to the Major train, there are up to two Early Deployment (ED) trains. One ED train--Release 11.2 P--delivers both fixes to software defects and support for new Cisco platforms. The other ED train--Release 11.2 F--delivers fixes to software defects, new platform support, and new cross-platform functionality.

These release notes do not describe features that are available in Release 11.2 or Release 11.2 F. For information about features in Release 11.2, refer to the Release Notes for Cisco IOS Release 11.2. For information about features in Release 11.2 F, refer to the Release Notes for Cisco IOS Release 11.2 F.

Use these release notes in conjunction with the Release Notes for Cisco IOS Release 11.2. The software caveats that apply to Release 11.2 also apply to Release 11.2 P.

These release notes discuss the following topics:

• Documentation, page 2

• Platform Support for Release 11.2 P, page 3

• New Features in Release 11.2(7)P, page 6

• New Features in Release 11.2(6)P, page 11

• New Features in Release 11.2(5)P, page 12

• New Features in Release 11.2(4)P, page 16

• New Features in Release 11.2(3)P, page 17

• New Features in Release 11.2(2)P, page 17

• Cisco IOS Feature Sets, page 18

• Upgrading to a New Software Release, page 61

• Memory Requirements, page 61

• Important Notes, page 67

• Release 11.2(7)P Caveats, page 67

• Release 11.2(6)P Caveats/11.2(7)P Modifications, page 68

• Release 11.2(5)P Caveats/11.2(6)P Modifications, page 70

• Release 11.2(4)P Caveats/11.2(5)P Modifications, page 71

• Release 11.2(3)P Caveats/11.2(4)P Modifications, page 72

• Release 11.2(1)P Caveats/11.2(3)P Modifications, page 72

• Cisco Connection Online, page 72

• Documentation CD-ROM, page 73

Documentation

Refer to the Feature Guide for Cisco IOS Release 11.2 P for new or changed Cisco IOS software documentation specific to new access server and router features described in these release notes. In this feature guide, new features are documented in their own sections, which include configuration tasks and also new and changed command reference pages. This feature guide supplements the Cisco IOS Release 11.2 configuration guide and command reference publications and provides feature documentation for all 11.2 P releases up to and including 11.2(7)P.

These release notes do not describe features that are available in Release 11.2 or Release 11.2 F. For information about features in Release 11.2, refer to the Release Notes for Cisco IOS Release 11.2. For information about features in Release 11.2 F, refer to the Release Notes for Cisco IOS Release 11.2 F.

All the documents mentioned are available as printed manuals or electronic documents.

The most up-to-date Cisco IOS documentation can be found on the latest Documentation CD-ROM and on the Web. These electronic documents contain updates and modifications made after the paper documents were printed.

For electronic documentation of Cisco IOS Release 11.2 router and access server software features, available on the Documentation CD-ROM, refer to the Cisco IOS Release 11.2 configuration guides and command references, which are located in the Cisco IOS Release 11.2 database.

You can also access Cisco technical documentation on the Web at http://www.cisco.com.

Platform Support for Release 11.2 P

Cisco IOS Release 11.2 P supports the following platforms:

• Cisco 1600 series routers (Cisco 1601, Cisco 1602, Cisco 1603, and Cisco 1604)

• Cisco AS2509-RJ and Cisco AS2511-RJ access servers

• Cisco 2500 Fixed FRAD series (Cisco 2501FRAD-FX, Cisco 2501LANFRAD-FX, and Cisco 2502LANFRAD-FX)

• Cisco 3011 WAN module (a router card that is installed in the Catalyst 3200 switch)

• Cisco 3600 series routers (Cisco 3640 and Cisco 3620)

• Cisco 3800 Series (for information on the Cisco 3800, refer to the Cisco 3800 Series Product Release Notes)

• Cisco 4000 series routers (Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M)

• Cisco AS5200 universal access server

• Cisco 7000 series (RSP7000 and RSP7000CI only)

• Cisco 7200 series (Cisco 7206 and Cisco 7204)

• Cisco 7500 series (Cisco 7505, Cisco 7507, and Cisco 7513)

Table 1 and Table 2 summarize the LAN interfaces supported on each platform.

Table 3 and Table 4 summarize the WAN data rates and interfaces supported on each platform.

"Yes" means that a particular data rate or interface is supported. "No" means that it is not.

New Features in Release 11.2(7)P

The following new features are supported by Cisco IOS Release 11.2(7)P.

Cisco 3800

Cisco 3800 is a scalable access solution that combines switched voice, multiprotocol data and routing in one powerful access device. By integrating switching and routing technology onto a single card the Cisco 3800 significantly reduces communications costs. Switched voice, multiprotocol data, and routed traffic can be combined over Frame Relay, leased line, or T1/E1 ATM access lines for delivery over public Frame Relay or ATM services, or on Cisco's StrataCom IGX or BPX ATM backbone switches.

For more information on the Cisco 3800, refer to the Cisco 3800 Series Product Release Notes (documentation part number 78-4205-04).

Catalyst 5000 Route Switch Module (RSM)

The Catalyst 5000 RSM is a RSP2 class router blade for the Catalyst 5000 family of switches. The RSM provides high-performance, multilayer switching and routing services between switched Virtual LANs (VLANs) and emulated LANs (ELANs). Initial protocol support includes IP, IPX, appletalk, and DECnet.

For more information on the Catalyst 5000 RSM refer to the Cisco 5000 Series Switch Route Switch Module Installation and Configuration Note (documentation part number 78-4058-01).

16-Port and 32-Port Asynchronous Network Modules for  Cisco 3600 Series Routers

Cisco 3600 series routers now support 16- and 32-port network modules for asynchronous connections. These devices are high density modules that support speeds up to 134.4 kbps. Depending on which module you install in the router, you can have up to 16 or 32 modem connections to each module at any given time. The Cisco 3640 can support up to 96 dialin ports.

56K 12-Port Modem Modules for the Cisco AS5200 Access Server

The Cisco AS5200 universal access server now supports digital modem cards, which are software upgradeable to 56K modems (K56flex) with modem firmware 3.1.x and beyond.

Digital modems are used for making high-speed connections across digital networks. Ultimately, this means that files transmitted up to 56 kbps arrive at the desktop at nearly twice the speed of standard V.34 (28.8-kbps) connections. The wait for information is reduced by nearly 50 percent.

56K modems are ideal for serious Internet users who want to quickly dial in to corporate LANs or download web pages containing sound, video, graphics, and other large files over digital networks using standard telephone lines.

Compression Network Module for Cisco 3600 Series Routers

Cisco 3600 series routers now support a compression port module that provides high-performance, hardware-based data compression using simultaneous Stacker compression algorithms. Independent full-duplex compression and decompression capabilities are used on point-to-point (PPP) encapsulated packets.

A router's central processing unit is generally reserved for tasks such as creating and maintaining routing tables, not performing compression duties. When a hardware compression port module is used in a router, all compression activity is offloaded from the router's central processing unit. This kind of hardware configuration is needed for routers that require B-channel compression for multiple WAN connections, such as two ISDN PRI interfaces carrying 46 B channels. Signaling over the D channel is not compressed. One compression port module supports up to 128 WAN interfaces.

PA-8B-ST and PA-4B-U Basic Rate Interface Port Adapters

Basic Rate Interface (BRI) Integrated Services Digital Network (ISDN) port adapters (PA-8B-ST and PA-4B-U) are available on Cisco 7200 series routers.

The PA-8B-ST port adapter provides up to eight S/T-type BRI interfaces used to connect to an ISDN wide-area network through an external network terminator 1 (NT1) device. The PA-4B-U provides up to four BRI interfaces used to connect to an ISDN wide-area network through its internal NT1 device. Each PA-8B-ST and PA-4B-U interface consists of two bearer (B) channels that can transmit and receive data at the rate of 64-kbps, full-duplex, and one data (D) channel that can transmit and receive data at the rate of 16-kbps, full-duplex. The interfaces use an RJ-45 receptacle and standard straight-through twisted pair cable.

The B channels are used for transmitting user data. The D channel is used for call setup control and network connection teardown, and provides the communication from the router to the ISDN switch. The B and D channels are presented to the system as serial interfaces that support High-Level Data Link Control (HDLC) and Point-to-Point Protocol (PPP) encapsulation. The PA-8B-ST and PA-4B-U port adapters also support dial-on-demand routing (DDR).

Half-Duplex and Bisync for Synchronous Serial Port Adapters on Cisco 7200 Series Routers

The synchronous serial port adapters (PA-8T-V35, PA-8T-X21, PA-8T-232, and PA-4T+) on Cisco 7200 series routers support half-duplex and binary synchronous communications (Bisync). Bisync is a character-oriented data link layer protocol for half-duplex applications. In half-duplex mode, data is sent one direction at a time. Direction is controlled by handshaking the RTS and CTS control lines.

Particle-Based Transparent Bridging on Cisco 7200 Series Routers

Particle-based transparent bridging (TRB) adds scatter-gather capability to transparent bridging by default to improve performance on Cisco 7200 series routers.

Particles represent a communications data packet as a collection of noncontiguous buffers. The traditional Cisco IOS packet has a packet type control structure and a single, contiguous data buffer. A particle packet has the same packet-type control structure, but also maintains a queue of particle-type structures, each of which manages its own block.

This scatter-gather architecture provides the following advantages:

• Allows drivers to use memory more efficiently (especially when using media that has a large maximum transmission unit [MTU]). For example, Token Ring buffers could be 512 bytes rather than 16 KB.

• Allows concurrent use of the same region of memory. For example, on IP multicast a single packet is received and sent out on multiple interfaces simultaneously.

• Allows insertion or deletion of memory at any location in a packet (not just at the beginning or end).

Fast-Switched Fragmented IP Packets on Cisco 7200 Series Routers

Fragmented IP packets are now fast switched rather than process switched by default to improve performance on Cisco 7200 series routers.

Fast-Switched SMRP Packets on Cisco 7200 Series Routers

Simple Multicast Routing Protocol (SMRP) packets are now fast switched rather than process switched by default to improve performance on Cisco 7200 series router.

Turbo Flooding of UDP Datagrams on Cisco 7200 Series Routers

Turbo flooding is now supported on Cisco 7200 series routers. Turbo flooding speeds up flooding of User Datagram Protocol (UDP) datagrams using the spanning-tree algorithm. This feature is useful for quickly downloading periodic updates from a server to multiple clients in an environment where updates are frequent and speed and latency are primary considerations.

Next-Generation Route Switch Processor (RSP4) on Cisco 7500 Series Routers

The next-generation Route Switch Processor (RSP4) provides improved performance on Cisco 7500 series routers. The RSP4 uses a 200-MHz R5000 processor with twice the primary cache and a 512-KB secondary cache to greatly improve performance. The biggest increases in performance are in process-level switching and other process-level tasks (for example, route calculations) where the RSP4 is between two and four times faster than an RSP2. Fast-switching performance is also improved. The RSP4 supports the high system availability (HSA) feature and can be used in combination with an RSP2 or another RSP4.

Packet OC-3 Interface Processor

The Packet OC-3 Interface Processor (POSIP) is available on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI) and on Cisco 7500 series routers.

The POSIP is a fixed-configuration interface processor that uses second-generation Versatile Interface Processor (VIP2) technology. The POSIP provides a single 155.520-Mbps, OC-3 physical layer interface for packet-based traffic. This OC-3 interface is fully compatible with SONET and Synchronous Digital Hierarchy (SDH) network facilities and is compliant with RFC 1619, "PPP over SONET/SDH," and RFC 1662, "PPP in HDLC-like Framing." The Packet-Over-SONET specification is primarily concerned with the use of the PPP encapsulation over SONET/SDH links.

Channelized T3 Interface Processor Feature Enhancements

You can now perform the following new tasks on the Channelized T3 Interface Processor (CT3IP) available on Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI):

• Configure Maintenance Data Link (MDL) messages

• Enable performance monitoring via Facility Data Link (FDL) per ANSI T1.403

• Generate bit error rate testing (BERT) test patterns

• Enable remote FDL loopbacks

• Support SNMP MIB per RFC 1406 and RFC 1407

100VG-AnyLAN Port Adapter

The 100VG-AnyLAN port adapter (PA-100VG) is available on Cisco 7200 series routers, Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

The PA-100VG provides a single interface compatible with and specified by IEEE 802.12 to support 100 Mbps over Category 3 or Category 5 unshielded twisted-pair (UTP) cable with RJ-45 terminators. The PA-100VG supports 802.3 Ethernet packets and can be monitored with the IEEE 802.12 Interface MIB.

PA-4R-FDX Token Ring Full-Duplex Port Adapter

The Token Ring full-duplex port adapter (PA-4R-FDX) is available on Cisco 7500 series routers, Cisco 7200 series routers, and Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

The PA-4R-FDX provides up to four IBM Token Ring or IEEE 802.5 Token Ring interfaces that can be set for 4- or 16-Mbps half-duplex or full-duplex operation and early token release. The default for all interfaces is half-duplex 4-Mbps operation with early token release disabled. The PA-4R-FDX connects over Type 1 lobe or Type 3 lobe cables and provides a DB-9 (PC-type) receptacle.

PA-A1-OC3MM and PA-A1-OC3SM ATM Port Adapters

Asynchronous Transfer Mode (ATM) port adapters (PA-A1-OC3MM and PA-A1-OC3SM) are available on Cisco 7200 series routers, on the second-generation Versatile Interface Processor (VIP2) in Cisco 7500 series routers, and in Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

The ATM port adapter provides a single SONET/SDH OC-3 full-duplex interface (either multimode or single-mode intermediate reach) and supports data rates of up to 155 Mbps bidirectionally. The ATM port adapter connects to a SONET/SDH multimode or SONET/STC-3C single-mode optical fiber cable (STS-3C or STM-1 physical layer) to connect the router to an external DSU (an ATM network). The ATM port adapter supports the following features:

• Segmentation and reassembly (SAR) of up to 512 buffers simultaneously, where each buffer represents a packet

• Up to 256 transmit buffers for simultaneous fragmentation

• Up to 2,048 SAR virtual circuits (VCs)

• ATM adaptation layer (AAL) 5

• Operation, Administration, and Maintenance (OAM) cells

PA-2CE1/PRI-75, PA-2CE1/PRI-120, and PA-2CT1/PRI Channelized E1 and T1 Port Adapters

Channelized E1 and T1 Primary Rate Interface (PRI) Integrated Services Digital Network (ISDN) port adapters (PA-2CE1/PRI-75, PA-2CE1/PRI-120, and PA-2CT1/PRI) are available on Cisco 7200 series routers, Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

The PA-2CE1/PRI-120 (balanced 120 ohm) and PA-2E1/PRI-75 (unbalanced 75 ohm) provide up to two channelized E1 interfaces to connect to channel service units (CSUs), and can transmit and receive data bidirectionally at the E1 rate of 2.048 Mbps. The PA-2CT1/PRI provides up to two channelized T1 interfaces to connect to CSUs, and can transmit and receive data bidirectionally at the T1 rate of 1.544 Mbps. The interfaces use a 15-pin, D-shell receptacle. The PA-2CE1/PRI-75 and PA-2E1/PRI-120 use G.703 serial interface cables, and the PA-2CT1/PRI uses standard serial cables (null-modem and straight-through).

Data Encryption Service Adapter

The data encryption service adapter (ESA) is available on Cisco 7200 series routers, on the second-generation Versatile Interface Processors (VIP2-40 specifically) in Cisco 7500 series routers, and on the VIP2-40 in Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI). (ESAs require VIP2 model VIP2-40.)

The ESA provides encryption processing to offload some of the encryption processing from the router's main processor and to improve performance. Encryption and authentication are provided by a software service called a crypto engine. The ESA provides the encryption mechanisms required to perform data encryption using a 40-bit or 56-bit Data Encryption Standard (DES) configured through the crypto engine. The ESA uses Public Key (PK) technology based on the concept of the Protected Entity (PE) and employs the DES and the Digital Signature Standard (DSS) to ensure secure data and information can be transferred between similarly equipped hosts on your network.

For detailed information on encryption, refer to the "Configuring Network Data Encryption with Router Authentication" chapter in the Security Configuration Guide.

Clock Rate Command Enhancements

The clock rate interface command has been enhanced for the synchronous serial port adapters (PA-8T-V35, PA-8T-X21, PA-8T-232, and PA-4T+) on Cisco 7200 series routers, on second-generation Versatile Interface Processors (VIP2s) in Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI). For these port adapters, a nonstandard clock rate can be used. The clock rate you enter is rounded (if needed) to the nearest value that your hardware can support.

New Features in Release 11.2(6)P

The following new features are supported by Cisco IOS Release 11.2(6)P. Because each of these features do not require new or modified software configuration information, no additional feature chapters for Release 11.2(6)P are included in the Feature Guide for Cisco IOS Release 11.2 P.

Cisco 2500 Fixed FRAD Series

Cisco Systems is introducing three new models in the Cisco 2500 series that are preconfigured as Frame Relay access devices (FRADs). The devices include the Cisco 2501FRAD-FX, Cisco 2501LANFRAD-FX, and Cisco 2502LANFRAD-FX. These new "Fixed FRADs" complement the existing Cisco 2500 serial and LAN FRAD models and offer a new entry point for cost-effective Frame Relay applications. The Fixed FRADs are ideal for branch office and remote office connectivity of legacy/ System Network Architecture (SNA) devices or cost-effective Frame Relay access.

Mission-specific routers are entry-level routers that are based on standard Cisco 2500 series hardware. However, mission-specific routers contain less memory than standard models and run reduced software images designed for CFRAD, LAN FRAD, and ISDN applications. The Cisco 2500 series fixed FRAD platforms are a variation of the Mission-specific CFRAD and LAN FRAD platforms. However, they are not upgradeable to routers like the mission-specific FRAD models.

The Cisco Fixed FRADs have been modified so that they will not execute non-FRAD Cisco IOS software images. This includes the images designed for other Cisco 2500 series systems. The Fixed FRAD routers cannot be upgraded to run feature sets that typically run on Cisco 2500 series routers.

The Fixed FRAD series includes three fixed-configuration hardware models with the following features:

• Cisco 2501FRAD-FX--Two high-speed synchronous serial and one low-speed asynchronous serial interface

• Cisco 2501LANFRAD-FX--One Ethernet, two high-speed synchronous serial, and one low-speed asynchronous serial interface

• Cisco 2502LANFRAD-FX--One Token Ring, two high-speed synchronous serial, and one low-speed asynchronous serial interface

Generated SysObjectID's

The Generated SysObjectID's feature generates a unique sysObjectID for each Cisco 2500 series router and its derived partner product. For example, the sysObjectID values for a Cisco 2511, a partner's 2511, and another partner's 2511 will each be different. The sysObjectID SNMP MIB object is used to identify the device to be managed and make application-specific decisions. In some network management programs, this object determines which graphical element or name to display for a device.

Fast Ethernet for the Cisco 3600 Series Routers

The Fast Ethernet network module provides a single interface that supports 100BaseT and 10BaseT connectivity. There is one RJ-45 10/100 port on the Fast Ethernet network module. This port enables autonegotiation of the peers' capabilities and configure itself to support the highest possible data rate.

New Features in Release 11.2(5)P

The following hardware platforms are supported by Cisco IOS Release 11.2(5)P.

Cisco 1600 Series Routers

The Cisco 1600 series of access routers deliver the next-generation set of features and benefits for small-office Internet and intranet access: WAN flexibility, end-to-end security, end-to-end quality of service, ease of use, deployment, and management. Cisco 1600 series routers connect small offices with Ethernet LANs to the public Internet and to a company's internal intranet or corporate LAN through several WAN connections such as ISDN, asynchronous serial, and synchronous serial. Cisco 1600 series routers include the following models: the Cisco 1601, Cisco 1602, Cisco 1603, and Cisco 1604.

All Cisco 1600 series models include one Ethernet port, one built-in WAN port, and one WAN interface card expansion slot for additional connectivity and flexibility. The Cisco 1601 includes a built-in serial WAN port; the Cisco 1602 has an onboard 56-kbps four-wire channel service unit/data service unit (CSU/DSU); the Cisco 1603 has an ISDN BRI S/T port; and the Cisco 1604 includes an ISDN BRI U interface with a built-in NT1 device.

The following are WAN interface cards supported by the Cisco 1600 series routers:

• 1-port serial

• 1-port ISDN BRI with S/T interface

• 1-port ISDN BRI with NT1 and U interface

Cisco AS2509-RJ and Cisco AS2511-RJ Access Servers

The Cisco AS2509-RJ and Cisco AS2511-RJ access servers connect asynchronous serial devices to LANs and WANs. The access servers combine the functions of a terminal server, protocol translator, and a router, and perform both synchronous and asynchronous routing of supported protocols.

These access servers provide the following interfaces and ports:

• 8 (Cisco AS2509-RJ) or 16 (Cisco AS2511-RJ) asynchronous serial ports for connection to modems, terminals, or other asynchronous devices

• One Ethernet attachment unit interface (AUI) port for connection to a LAN

• One synchronous serial port for connection to a WAN

• One EIA/TIA-232 console port for connection to a console terminal

• One EIA/TIA-232 auxiliary port for connection to a terminal or modem

Cisco 3600 Series Routers

The Cisco 3600 series includes the Cisco 3640 and Cisco 3620 routers. As modular solutions, the Cisco 3640 and Cisco 3620 enable corporations to increase dialup density and take advantage of current and emerging WAN technologies and networking capabilities. The Cisco 3600 series is fully supported by the Cisco IOS software, which includes dialup connectivity, LAN-to-LAN routing, data and access security, WAN optimization, and multimedia features.

The Cisco 3640 has four network module slots; the Cisco 3620 has two slots. Each network module slot accepts a variety of network module interface cards, including LAN and WAN mixed media cards supporting Ethernet, Token Ring, and a variety of WAN technologies. These cards provide the foundation of LAN and WAN connectivity on a single modular network module. Additional applications are supported with a series of network module cards offering asynchronous and synchronous serial, ISDN PRI, and ISDN BRI interfaces.

Table 5 lists the WAN interface cards supported by the Cisco 3600 series routers.

Channelized E1 Signaling for the Cisco AS5200

The Cisco AS5200 universal access server now supports channel-associated signaling for channelized E1 lines, which are commonly deployed in networks in Latin America, Asia, and Europe.

After this feature is configured on a single E1 controller, up to 30 remote users can simultaneously dial in to the Cisco AS5200 through networks running the R2 protocol. Typically, all 30 channels of an channelized E1 line are used for analog calls. However, a signal converter is still needed to perform conversions between R2 signaling and ear and mouth signaling (also known as E&M). Because the Cisco AS5200 has two physical E1 ports on its dual E1 PRI board, up to 60 simultaneous connections can be made through the dual E1 PRI board.

High-Speed Serial Interface Network Processor Module for Cisco 4000 Series Routers

A High-Speed Serial Interface (HSSI) network processor module (NPM) is a high-speed and high-bandwidth serial interface device that is inserted into a vacant chassis slot on Cisco 4000 series routers. The HSSI NPM supports full-duplex and data rates up to 52 Mbps.

There are many network applications for the HSSI NPM. For example, medium-sized Internet service providers can use this module to connect to an Internet backbone provider via a T3 or E3 line. It can also be used for campus-to-campus high-speed serial connections.

SA-Comp/1 and SA-Comp/4 Data Compression Service Adapters

The SA-Comp/1 and SA-Comp/4 data compression service adapters (CSAs) are available on Cisco 7200 series routers, on second-generation Versatile Interface Processors (VIP2s) in Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI). (CSAs require VIP2 model VIP2-40.)

These service adapters provide high-performance, hardware-based data compression capabilities via simultaneous Stacker compression data compression algorithms with independent full-duplex compression and decompression capabilities on Point-to-Point Protocol (PPP) encapsulated packets.

Channelized T3 Interface Processor

The Channelized T3 Interface Processor (CT3IP) is available on Cisco 7500 series routers and Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

The CT3IP is a fixed-configuration interface processor based on the second-generation Versatile Interface Processor (VIP2). The CT3IP has four T1 connections via DB-15 connectors and one DS3 connection via BNC connectors. Each DS3 interface can provide up to 28 T1 channels (a single T3 group). Each channel is presented to the system as a serial interface that can be configured individually. The CT3IP can transmit and receive data bidirectionally at the T1 rate of 1.536 Mbps. The four T1 connections use 100-ohm twisted-pair serial cables to external channel service units (CSUs) or to a MultiChannel Interface Processor (MIP) on the same router or on another router. For wide-area networking, the CT3IP can function as a concentrator for a remote site.

FDDI Full-Duplex Single-Mode and Multimode Port Adapters

Fiber Distributed Data Interface (FDDI) full-duplex single-mode and multimode port adapters (PA-F/FD-SM and PA-F/FD-MM) are available on Cisco 7200 series routers, on second-generation Versatile Interface Processors (VIP2s) in Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

These port adapters provide an interface for both single-mode and multimode fiber-optic cable. Two physical ports are available with either single-mode SC-type or multimode MIC receptacles. Each port adapter's FDDI connection allows a maximum aggregate bandwidth of 200 Mbps per the FDDI standard.

High-Speed Serial Interface Port Adapters

The High-Speed Serial Interface (HSSI) port adapters (PA-H and PA-2H) are available on Cisco 7200 series routers, on second-generation Versatile Interface Processors (VIP2s) in Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

The PA-H provides one high-speed synchronous serial interface, and the PA-2H provides two high-speed synchronous serial interfaces.

Synchronous Serial Port Adapters

The synchronous serial port adapters (PA-8T-V35, PA-8T-X21, PA-8T-232, and PA-4T+) are available on Cisco 7200 series routers, on second-generation Versatile Interface Processors (VIP2s) in Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

The PA-8T-V35, PA-8T-X21, PA-8T-232 port adapters provide up to eight synchronous serial interfaces, and the PA-4T+ provides up to four synchronous serial interfaces. Each port on the PA-4T+ supports any of the available interface types: Electronics Industries Association/Telecommunications Industries Association (EIA/TIA)-232, EIA/TIA-449, V.35, X.21, and EIA-530.

RSP Fragmented IP Packets Optimum or Flow Switched

To improve performance, fragmented IP packets are now optimum or flow switched (depending which switching method is enabled) rather than being process switched on Cisco 7500 series routers and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).

Selective Packet Discard (SPD)

When in severe overload conditions, routers that cannot keep up with the incoming packet stream must drop packets. If no intelligence is applied to choosing which ones to discard, this will impact the stability of routing protocols. This feature applies some simple choices to selectively discard packets likely to be unimportant for routing and interface stability. SPD is enabled by default; there are no commands or configuration tasks required.

New Features in Release 11.2(4)P

The following software features have been added to Release 11.2(4)P.

Internet Router Cards for 10BaseT Hubs

An Internet router card is a low-end router module, which has functionality similar to the Cisco 2503, that is inserted into a 10BaseT hub and provides the following interfaces and ports:

• One ISDN BRI port (RJ-45)

• Two synchronous serial ports for WAN connections

• One 10BaseT or 100VG port for LAN connections, which is integrated into the card's backplane

• One EIA/TIA-232 console port for connection to a console terminal

• One EIA/TIA-232 auxiliary port for connection to a terminal or modem

2T16S Network Processor Module (Asynchronous and Synchronous)

This network processor module for the Cisco 4500 and Cisco 4700 routers now provides asynchronous interfaces on its 16 low-speed serial interfaces (supports speeds up to 115 kbps). Asynchronous terminal services and async dial-up connections using external modems for PPP, SLIP, and ARAP are now supported. In Cisco IOS Release 11.2(3)P, the 2T16S network processor module only supported synchronous serial connections. Each Cisco 4500 and Cisco 4700 router supports up to two installed modules. This processor module does not support x.21/mix/rs530A.

New Features in Release 11.2(3)P

The following software features have been added to Release 11.2(3)P.

2T16S Network Processor Module (synchronous)

The 2T16S network processor module provides high-density serial interfaces for the Cisco 4500 and Cisco 4700 routers. This module has two high-speed interfaces that support full duplex T1 and E1 rates (up to 2 MB per second) and 16 low-speed interfaces. The 16 lower speed ports can be individually configured as synchronous ports at speeds up to 128 kbps. Synchronous protocols include IBM's BSC, SDLC, and HDLC. Each Cisco 4500 series and Cisco 4700 series router can run up to two of these new modules simultaneously. This processor module does not support x.21/mix/rs530A.

New Features in Release 11.2(2)P

The following software features have been added to Release 11.2(2)P.

Robbed Bit Signaling for the Cisco AS5200

New types of signaling provided for a channelized T1 include ground start and loop start support. This new signaling is set using the cas-group controller configuration command.

Dual E1 PRI for the Cisco AS5200

This new E1 PRI card has two E1 controllers, which provide physical termination for two E1 PRI lines. Unlike most controller E1 configurations, the Cisco AS5200's E1 PRI controllers require a clock source, which is set with the clock source command.

Fast Ethernet Network Interface Module for the Cisco 4000 series

This new module is supported on the Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M routers. It provides a single full-duplex, 100-Mbps Ethernet interface that conforms with the IEEE 802.3u Fast Ethernet specification.

The recommended rxboot for this module is 11.1(7). You can download this free image
from the Web. (See the section "Cisco Connection Online" at the end of this document.)

Cisco 3011 WAN Module

This module is a router card that is installed in the Catalyst 3200 switch. In addition to two synchronous serial interfaces and an auxiliary interface, this card provides a BRI interface for ISDN WAN connectivity.

Access the Cisco 3011 WAN module's console port through the Catalyst 3200's console port. From the switch's console, press Ctrl-R to toggle between the switch's console configuration mode and the router's console configuration mode. To resynchronize the baud rate of the internal console, press Ctrl-B.

Cisco IOS Feature Sets

This section lists Cisco IOS software feature sets available in Cisco IOS Release 11.2 P.
These features are available in specific features sets on specific platforms.

For a complete list of Release 11.2 features that apply to platforms not mentioned in this release note, refer to the Release Notes for Cisco IOS Release 11.2.

Release 11.2 P supports the same feature sets as Release 11.2, but it also has new software features to accompany new platform support (such as dual E1 PRI for the Cisco AS5200, robbed bit signaling for the Cisco AS5200, and Fast Ethernet for the Cisco 4000 series).

Table 6 through Table 17 use these feature set matrix symbols to identify features:

Cisco IOS images with 40-bit Data Encryption Standard (DES) support may legally be distributed to any party eligible to receive Cisco IOS software. 40-bit DES is not a cryptographically strong solution and should not be used to protect sensitive data.

Cisco IOS images with 56-bit DES are subject to International Traffic in Arms Regulations (ITAR) controls and have a limited distribution. Images to be installed outside the U.S. require an export license. Customer orders may be denied or subject to delay because of U.S. government regulations. Contact your sales representative or distributor for more information, or send e-mail to export@cisco.com.

Table 6 and Table 7 list the standard feature sets supported in Release 11.2 P.

Feature Set Tables

The Cisco IOS software is available in different feature sets depending upon the platform. Table 8 lists the feature sets for the Cisco 1600 series. Table 9 lists the feature sets for the Cisco AS2509-RJ and Cisco AS2511-RJ. Table 10 lists the feature sets for the Cisco 2500 Fixed FRAD series. Table 11 lists the feature sets for the Cisco 3600 series. Table 12 lists the feature sets for the Cisco 4000 series. Table 13 lists the feature sets for the Cisco AS5200. Table 14 lists the feature sets for the Cisco 3011 WAN module. Table 15 lists the feature sets for Internet router cards installed in 10BaseT hubs. Table 16 lists the feature sets for Cisco 7000 (with RSP7000) and Cisco 7500 series routers. Table 17 lists the feature sets for Cisco 7200 series routers. Table 18 lists optional feature set licenses for the Cisco 7000 series (with RSP7000), Cisco 7200 series, and Cisco 7500 series.