Release Notes for the Cisco AccessPath Integrated Access System,
Cisco IOS Release 11.2(8)P

August 25, 1997

These release notes describe the features and caveats for Cisco IOS software on the Cisco AccessPath Integrated Access System, up to and including Release 11.2(8)P. They include all routing and access server features. For additional information on the release of software used on the Failsafe/Console Management Shelf and the Switch Shelf, refer to the documents referenced in "Cisco IOS and Catalyst 5000 Series Software Documentation Roadmap" and the document Release Notes for Cisco IOS Release 11.1(11). These release notes are on the Documentation CD-ROM and the web, for more information, see the sections "Cisco Connection Online" and "Documentation CD-ROM."

Table 1 lists the AccessPath system shelves and the version of the Cisco IOS software each is running (the Switch Shelf does not run Cisco IOS software). In order for the AccessPath system to operate correctly, it must have the correct software.

Introduction

These release notes discuss the following topics:

• Cisco IOS and Catalyst 5000 Series Software Documentation Roadmap, page 3

• AccessPath System Configuration Guidelines, page 5

• Platform Support for Release 11.2, page 5

• Cisco IOS Release 11.2 Packaging, page 7

• Memory Requirements for Release 11.2, page 17

• Issues Resolved in Release 11.2(8)P, page 18

• Release 11.2(8)P Caveats, page 19

• Cisco Connection Online, page 21

• Documentation CD-ROM, page 22

Cisco IOS and Catalyst 5000 Series Software Documentation Roadmap

Table 2 identifies the related software documents for each Cisco AccessPath Shelf.

.

For Cisco IOS Release 11.2, the Cisco IOS documentation set consists of eight modules, each module consisting of a configuration guide and a command reference. The documentation set also includes five supporting documents. Figure 1 lists the eight modules of the Cisco IOS software documentation set with brief descriptions of the features covered in each module.

AccessPath System Configuration Guidelines

These guidelines are used during the preconfiguration process for the Cisco AccessPath Integrated Access System, and should be taken into consideration during any subsequent reconfigurations of the AccessPath system.

1. Minimize or disable unnecessary broadcasts, such as CDP and NTP.
   
   
2. Disable unnecessary protocols, such as MOP and LAT on Ethernet interfaces.
   
   
3. Minimize or disable unnecessary queuing, such as weighted fair queuing on analog PRI interfaces.
   
   
4. Turn off header compression. AccessPath system architecture limits the benefits provided by this feature.
   
   
5. Use IP route-caching with Ethernet and Asynchronous ports. Set int s 0:23 to ensure fast switching is properly configured.
   
   
6. When configuring for L2F/SGBP, configure each of the Access Server Shelves for L2F tunneling to the Router Shelf, but not for the other Access Server Shelves. (Refer to the chapter, "Configuring Multichassis Multilink PPP" in the Cisco AccessPath Integrated Access System Software Configuration Guide.)
   
   
7. When configuring for L2F/SGBP, configure the Router Shelf for L2F tunneling to each of the Access Server Shelves. (Refer to the chapter, "Configuring Multichassis Multilink PPP" in the Cisco AccessPath Integrated Access System Software Configuration Guide.)
   

Platform Support for Release 11.2

The Access Server Shelves and Router Shelves of the AccessPath system use Cisco IOS Release 11.2.

Table 3 summarizes the LAN interfaces supported on each platform.

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

Cisco IOS Release 11.2 Packaging

In Cisco IOS Release 11.2, feature sets have been updated to make it easier to select the exact feature sets you need. Feature set names are simplified and are more consistent across Cisco hardware platforms. In addition, you can add options to the standard feature set offerings. These options provide additional features and value, based on the hardware platform selected. Cisco also continues to offer specialized feature sets for key applications.

Table 5 provides a matrix of the new feature set organization and shows which feature sets are available on the various hardware platforms. These feature sets only apply to Cisco IOS Release 11.2.

An explanation of the table entries follows:

• Basic. The basic feature set for the hardware platform.

• Plus. The basic feature set plus a variable set of additional features depending on the hardware platform selected.

• Encryption. The addition of 40-bit (Plus 40) or 56-bit (Plus 56) data encryption feature sets.

Cisco IOS images with strong encryption (including, but not limited to 56-bit DES) are subject to U.S. Government export 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.

Feature Set Tables

The Cisco IOS software is available in different feature sets depending on the platform. Table 6 lists the feature sets for the Cisco 7200 series. Table 7 lists the feature sets for the Cisco AS5200.

The tables use the following conventions to identify features:

Yes : The feature is offered in the basic feature set

-- : The feature is not offered in the feature set

Plus: The feature is offered only in the Plus feature sets, not in the basic feature set

Encrypt: The addition of 40-bit (Plus 40) or 56-bit (Plus 56) data encryption feature sets

Cisco IOS images with 40-bit Data Encryption Standard (DES) support can 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.

Memory Requirements for Release 11.2

For Cisco routers to take advantage of the Release 11.2 features, you must upgrade the code or main system memory as listed in Table 10. Some platforms have specific chip or architecture requirements that affect what can be upgraded and in what increments.

Image Naming in Release 11.2

Release 11.2 introduces new feature-set image names for several feature sets that were available in earlier releases. For example, the prefix "igs-" has been replaced with "c2500-." Image names have been changed to facilitate identifying the platform on which the image runs. New prefixes are shown in Table 8.

The contents of feature sets for some platforms has changed in Release 11.2. Table 9 lists image names in Release 11.1 that have been replaced by new sets in Release 11.2. If you normally use an image from Release 11.1 or earlier that is not available in Release 11.2, use the equivalent image shown in Table 9. New images contain as many features as earlier ones, and include new features for Release 11.2.

Issues Resolved in Release 11.2(8)P

This section describes fixes introduced in Release 11.2(8)P. For a list of serious problems that might affect the AccessPath system, refer to the section "Release 11.2(8)P Caveats." For the complete list of caveats against Release 11.2, use the Documentation CD-ROM or access CCO as described in the section "Cisco Connection Online" later in this document.

Release 11.2(8)P Caveats

This section describes possibly unexpected behavior by Release 11.2(8). Unless otherwise noted, these caveats apply to all 11.2, 11.2 P, and 11.2 F releases up to and including 11.2(8). The caveats listed here describe only the serious problems. For the complete list of caveats against Release 11.2, use the Documentation CD-ROM or access CCO as described in the section "Cisco Connection Online" later in this document.

When running Cisco IOS software on the AccessPath system, keep the following caveats in mind. These caveats pertain specifically to AccessPath configurations.

Access Server Shelf

The following caveat applies exclusively to the Access Server Shelf.

Multichassis Multilink Point-to-Point Protocol

• On Access Server Shelves running Multichassis Multilink Point-to-Point Protocol (MMP), under heavy traffic, the Access Server Shelf might crash with the following stack trace:

PC = 0x22275388
Frame 00: FP = 0x002bce2c    RA = 0x22275b56
Frame 01: FP = 0x002bce70    RA = 0x22275d48
Frame 02: FP = 0x002bce8c    RA = 0x22260dd8
Frame 03: FP = 0x002bceb4    RA = 0x22266e84
Frame 04: FP = 0x002bd00c    RA = 0x22266f56
rommon 5 > context
CPU Context:
d0 - 0x00000040      a0 - 0x0023b588
d1 - 0x00000049      a1 - 0x0d0d0d0d
d2 - 0x003d40a0      a2 - 0x003bc2b4
d3 - 0x003bc2b4      a3 - 0x003d716c
d4 - 0x002bce88      a4 - 0x0023a4b8
d5 - 0x002bcf60      a5 - 0x003bdfe8
d6 - 0x00000000      a6 - 0x002bce2c
d7 - 0x00000001      a7 - 0x002bcdc4
pc - 0x22275388     vbr - 0x01000000
sr - 0x2700
Enter hex value: 0x22275388
0x22275388:_mlp_prepend_link_sorted(0x2203f314+0x23601e)+0x56
Enter hex value: 0x22275b56
0x22275b56:_mlp_add_link(0x2203f314+0x236658)+0x1ea
Enter hex value: 0x22275d48
0x22275d48:_multilink_up(0x2203f314+0x236a02)+0x32
Enter hex value: 0x22260dd8
0x22260dd8:_lcp_authcomplete(0x2203f314+0x221910)+0x1b4
Enter hex value: 0x22266e84
0x22266e84:_chap_rresponse(0x2203f314+0x2272f2)+0x87e
Enter hex value: 0x22266f56
0x22266f56:_ppp_auth_background(0x2203f314+0x227b86)+0xbc

[CSCdj10440]

Wide-Area Networking

• When PPP debugs are turned on, you may find messages of this type on the console:

*Feb 28 22:29:50.351 EST: Se0:19 PPP: dropped, LCP not open. Protocol = 0x21
*Feb 28 22:29:50.423 EST: Se0:18 PPP: dropped, LCP not open. Protocol = 0x21 

[CSCdj14985]

• CHAP authentication may fail when you configure the aaa authentication local-override command. [CSCdj08113]

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:

• WWW:  http://www.cisco.com

• WWW:  http://www-europe.cisco.com

• WWW:  http://www-china.cisco.com

• Telnet:  cco.cisco.com

• Modem:  From North America, 408 526-8070; from Europe, 33 1 64 46 40 82. Use the following terminal settings: VT100 emulation; databits: 8; parity: none; stop bits: 1; and connection rates up to 28.8 kbps.

For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.

Documentation CD-ROM

Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more up to date 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.