Table Of Contents
Release Notes for Catalyst 2820 Series and Catalyst 1900 Series Firmware Version 5.33
Cisco Group Management Protocol
Known Problems with Version 5.33
Release Notes for Catalyst 2820 Series and Catalyst 1900 Series Firmware Version 5.33
February 18, 1997
These release notes describe the new features, modifications, and known problems in the Catalyst 2820 and the Catalyst 1900 Version 5.33 firmware. This firmware runs on the Catalyst 2820 and the Catalyst 1900 only.
The product documentation for these products is as follows:
Catalyst 2820 Series and Catalyst 1900 Series Installation and Configuration Guide
Catalyst 2820 Modules User Guide
Catalyst 2820 Series and Catalyst 1900 Series MIB Reference Manual
New Features
This release adds support for the Cisco Discovery Protocol (CDP), the Cisco Group Management Protocol (CGMP), and Remote Monitoring (RMON).
Cisco Discovery Protocol
CDP allows network managers to obtain an accurate picture of the network at any time. By gathering information about the types of devices in the network, the links between those devices, and the number of interfaces within each device, CDP enables network management applications to display a graphical topology map of the network. Detailed information about the connections between devices is also available.
Cisco Group Management Protocol
CGMP reduces the unnecessary flooding of IP multicast packets. The switch receives data via the CGMP from a Cisco router that identifies clients that should receive certain IP multicast packets. With this information, the switch limits the transmission of the IP multicast packets to those clients identified by the router.
Remote Monitoring
The Catalyst 2820 and the Catalyst 1900 support four RMON groups as defined by RFC 1757. As recommended by the RFC, default statistics and history rows are created automatically when you start the system. You can obtain information about these four groups using any SNMP management application. The four supported RMON groups are described in .
Table 1
RMON Groups and Their Functions
Modifications
The following modifications are included in Version 5.33:
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In networks with heavy broadcast loads, the switch sometimes failed to respond to ping requests or establish Telnet sessions. This problem has been resolved.
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Known Problems with Version 5.33
This section applies to users upgrading from firmware Version 5.25 to Version 5.33.
If you have customized any Version 5.25 parameters, the upgrade to Version 5.33 resets these parameters to their factory defaults. These parameters need to be reset to your customized settings after the upgrade. The default values of the configurable parameters in Version 5.33 have not changed from Version 5.25.
The following list contains the parameters and factory defaults of those parameters that return to their factory defaults when you upgrade to Version 5.33 from 5.25.
Obtaining 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 that shipped with your product.
Note
For service and support for a product purchased directly from Cisco, use CCO.
Cisco Connection Online
CCO is Cisco Systems' primary, real-time support channel. SMARTnet customers and partners can self-register on CCO to obtain additional information and services.
Note
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.
Note
Please use CCO to obtain general information about Cisco Systems, Cisco products, or upgrades. If CCO is not accessible, contact 800 553-6387, 408 526-7208, or cs-rep@cisco.com.
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