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December 1997
This document describes important notes and caveats for the Catalyst 2820 ATM modules. Supporting documentation is the Catalyst 2820 ATM Modules Installation and Configuration Guide.
To order additional copies of the documentation, contact your local sales representative or call customer service. For information about accessing documentation on the World Wide Web, see the "Cisco Connection Online (CCO)" section.
The Catalyst 2820 ATM modules use Catalyst 2820 firmware version 7.02 or above. You can check the installed firmware version by using the firmware menu. For firmware upgrade procedures, refer to the Catalyst 2820 Series Installation and Configuration Guide. You can access this document on CCO.
Cisco IOS Release 11.3(1)T is already installed on the Catalyst 2820 ATM modules. If the installed Cisco IOS software gets corrupted, use the firmware version 7.02 configuration menu to reinstall the Catalyst 2820 ATM modules Cisco IOS Flash image. For details on how to install the module Flash image, refer to the Catalyst 2820 Series Installation and Configuration Guide.
The Catalyst 2820 ATM modules package contains one DOS-version disk, which contains the
Cisco IOS Flash image.
If you forget your password for the Catalyst 2820 ATM modules, you can reset the password to the factory default by doing the following:
Step 1 Go to the main menu of firmware version 7.02.
Step 2 Enter P, and press Return.
The Port Configuration menu appears.
Step 3 Enter F, and press Return.
The default password is no password.
Each ATM trunk supports a maximum of 64 active virtual LANs (VLANs) at one time.
This release of the Catalyst 2820 ATM modules supports multiple emulated LANs (ELANs). You can logically group users on Ethernet and ATM networks by mapping VLANs on the Ethernet network to ELANs on the ATM network.
The Catalyst 2820 ATM modules support multiple VLAN mappings for RFC-1483 Logical Link Control (LLC) encapsulation. With RFC 1483, you can transport Ethernet frames over PVCs.
The following ATM modules-specific commands are now supported:
| Command | Description | Type | Mode |
|---|---|---|---|
| atm bind | Binds a permanent virtual connection (PVC) to or from a VLAN. | IOS/ATM | P |
| show atm vlan | Shows the relationship between the VLAN and the PVCs. | IOS/ATM | P |
The following Cisco IOS commands are now supported:
| Command | Description | Type | Mode |
|---|---|---|---|
| show controller address-table | Shows the address table entries. | IOS/ATM | EXEC |
| show controller atm | Shows the ATM segmentation and reassembly (SAR) counters. | IOS/ATM | EXEC |
| show controller eth | Displays the MAC counters. | IOS/ATM | EXEC |
| show controller hostif | Displays the host I/F counters. | IOS/ATM | EXEC |
| show controller mem | Displays the memory buffer pools. | IOS/ATM | EXEC |
| show controller relay | Displays the Ethernet-to-ATM and ATM-to-Ethernet relay counters. | IOS/ATM | EXEC |
| show controller rfc | Displays the RFC-1483 counters. | IOS/ATM | EXEC |
| show controller sonet | Displays the SONET counters. | IOS/ATM | EXEC |
If your attempt to upgrade the ATM module firmware fails while the module is in normal operation, the expansion slot LED on the Catalyst 2820 switch turns amber. The module continues normal operation, but the module image stored in the Flash memory is corrupted. When you reset the ATM module, it will not find a valid Cisco IOS image, and the ATM module will not past the power-on self-test (POST). To correct this problem, repeat the firmware upgrade procedure to download a new firmware image on the ATM module.
When you close a permanent virtual connection (PVC) using the no atm pvc command and the ATM interface or link is down, the PVC does not close completely. The internal data structure remains for that PVC, but the show atm vc command will not list the PVC. If you had bound the PVC to a VLAN, the binding also remains after the PVC is closed. However, the wrong virtual circuit descriptor (VCD) number is shown when you use the show atm vlan command. This might cause a problem. To work around this problem, do not close the PVCs using the no atm pvc command when the ATM interface is down. If you want to close PVCs when the ATM interface is down, reset the module after closing PVCs.
The Cisco IOS ping and traceroute commands are not supported.
You cannot save your running configuration to a network Trivial File Transfer Protocol (TFTP) server.
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.
For service and support for a product purchased directly from Cisco, use CCO.
For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
CCO is Cisco Systems' primary, real-time support channel. SMARTnet 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:
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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