Release Notes for the
Catalyst 1900 Series
Standard Edition Switches
November 24, 1997
These release notes describe the caveats, usage guidelines, and restrictions for the Catalyst 1900 Series Standard Edition Switches, hereafter referred to as the Catalyst 1900 switches.
Use the Catalyst 1900 Series Installation and Configuration Guide in conjunction with this document.
These caveats apply to the Catalyst 1900 switches:
- You can assign back pressure on the 10-Mbps ports; however, the back pressure feature for the 100-Mbps ports is not available in this release. At this time, disregard the text about back pressure on the 100-Mbps ports in the Catalyst 1900 Series Installation and Configuration Guide.
- Also, information about the back pressure option for the 10-Mbps ports on page 3-33 in the "Configuration and Management" chapter of the
Catalyst 1900 Series Installation and Configuration Guide should state that this option is available from the System Configuration Menu, not the Port Configuration Menu.
- If you connect a 100BaseTX port that is configured for autonegotiation to a device that is not configured for autonegotiation, there could be problems establishing a link. To work around this problem, configure the high-speed port for either half or full duplex to match the configuration of the other device.
This section provides guidelines and restrictions for using the Catalyst 1900 switches.
- The text, "Autonegotiation and flow control are not supported on the 10BaseT ports," on page 2-15 in the "Installation" chapter and on
page 3-32 in the "Configuration and Management" chapter of the
Catalyst 1900 Series Installation and Configuration Guide should read, "Autonegotiation and full-duplex flow control are not supported on the 10BaseT ports."
- The "Technical Specifications" appendix in the Catalyst 1900 Series Installation and Configuration Guide should state that the Catalyst 1900 switches are FCC Class A approved and verified for FCC Class B instead of stating that the switches are FCC Class B approved.
- You do not need to reset the switch when assigning an IP address to the switch for the first time. When changing the IP address, you must reset the switch so that the IP address takes effect. To reset the switch, select
Reset System from the System Configuration Menu described in the "Out-of Band Management" chapter of the Catalyst 1900 Series Installation and Configuration Guide.
- When the switch initializes after a reset, the port experiences the complete Spanning-Tree Protocol (STP) transition, as specified by IEEE 802.1D, even if Port Fast mode is enabled. Once the transition is complete, the Port Fast mode setting is enforced. This process ensures that no temporary loop is formed after a reset and allows STP to safely discover the topology of the network.
- While performing a software upgrade, the switch might not respond to commands for as long as 1 minute. This is normal and correct. If you interrupt the transfer by turning the switch off and on, the firmware could be corrupted. If this happens, follow the procedure described in "Using the Diagnostic Console" in the "Troubleshooting" chapter of the Catalyst 1900 Series Installation and Configuration Guide.
- Switch configuration changes take effect immediately. However, the switch does not write changed parameters to permanent storage for up to 30 seconds. If you turn off the switch before the changed parameters are written to permanent storage, the change does not take effect the next time the system is restarted.
- If the switch is directly connected to a terminal or terminal emulator rather than to a modem connection, you must configure the switch to the same baud rate and character format as the terminal or emulator.
- If the switch is dialing out, the configured baud rate of the switch does not change. The Match Remote Baud rate option (auto baud) applies only when the switch is answering an incoming call. In addition, the switch matches to a rate less than or equal to the configured rate. Upon disconnecting from a call, the switch reverts to the last configured baud rate.
- If the optional Cisco 600W redundant AC power system (RPS) is the main power source to the switch, the AC power cord must be disconnected from the switch.
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