Customer Release Notes

35 Industrial Way PO Box 5005 Rochester, NH 03867-5005 (603)332-9400

17.If Hewlett-Packard GBIC (Gigabit Ethernet Interface Converter) modules are inserted/removed on the ELS100-24TXG while power is applied to the switch, they may become damaged. The damage results in the presence and type identity of the GBIC not being recognized by software. Data will still be switched successfully through the port.

18.The following issues are present when using the Port Trunking feature in this release of firmware:

−When configuring Port Trunking, the Spanning Tree path costs on ports can become misconfigured.

−Ports in different VLANs can be placed into the same trunk, which should not be allowed.

−Trying to add a port to a trunk that has been created in a different switch cluster (group of 8 ports) causes the ports in the trunk to be erroneously deleted.

−When a trunk group is configured, and the first port of that trunk group becomes disabled, local management reports that the entire trunk status is disabled; this is a false signal. The status can be corrected by disabling and re-enabling that port.

−This release does not provide compatibility with DEC Hunt Group proprietary protocol mode of operation; this functionality will be provided in a future release.

Please refer to the addendum to the ELS100-24TXG/TXM User Guides (Document # 9033194) for detailed information regarding port trunking configuration.

19.When a BootP server and DHCP server are both present in the network, in some cases only the IP address will be acquired; the firmware image will not be received. Both protocols work properly when only one server type is present. This condition also existed in earlier versions of firmware. Cabletron’s recommendation is to remove the DHCP server and reboot the switch; this will cause the switch to send BootP requests and receive an image from the BootP server.

20.When Microsoft Internet Explorer is used to access Cabletron WebView management, the initial start- up time is excessive (approximately 20 minutes), after which it performs normally. To avoid this delay, the switch’s IP address should be added to Internet Explorer’s Proxies “Ignore” area.

21.When using Cabletron WebView, an ELS100-24TXM which does not have an uplink installed is incorrectly reported to be an ELS100-24TX. This condition also existed in earlier versions of firmware.

22.Older versions of ELS100-24TX may not support the Cabletron WebView image download, due to insufficient memory.

23.When configuring 802.1Q trunks, the VLAN that contains the ports configured as trunks must not have those ports on the egress list for that VLAN. This results in a mis-configuration.

24.When configuring Port Trunks as 802.1Q trunks, you must add the port trunks to the egress list as a pair. Adding them separately results in an error reporting a VLAN violation.

25.When performing a TFTP file download to the switch, it may be necessary to repeat the process to successfully receive the entire file. Also, if a file that has been received is corrupt, the switch may enter a state where it is expecting to receive a new image via XMODEM download. This can be verified and corrected by invoking a local management session to the console (serial) port; the switch will send the character “c” to the console station until an XMODEM transfer of a new firmware image file is sent. For additional information, please reference http://www.cabletron.com/support/techtips/tk0564-9.html for XMODEM instructions, and http://www.cabletron.com/support/techtips/tk0490-9.html for TFTP/BootP instructions.

26.Contrary to the user manuals, the READ/WRITE and READ-ONLY passwords are case-sensitive in this version of firmware. The passwords must be typed exactly as they were created.

27.(Added 2/7/2000): The READ ONLY password is not saved to non-volatile memory. It will become effective and active when created, but will not be saved when the device is reset. Resetting the device clears the READ ONLY password. Also, when the READ/WRITE password is modified and saved, this will clear the READ ONLY password, allowing READ access with just a carriage return at the Login: prompt. These problems will be resolved in the next firmware release.

Any other problems than those listed above should be reported to our Technical Support Staff.

2/7/00 P/N: 9032741-08

Subject to Change Without Notice

Page 5 of 7

ELS100-24TX specifications

Cabletron Systems ELS100-24TX is a versatile network switch designed to cater to the demands of modern data communication. Intended for use in enterprise environments, the ELS100-24TX offers a wealth of features, making it an excellent choice for businesses seeking to enhance their network infrastructure.

One of the standout characteristics of the ELS100-24TX is its 24 Ethernet ports, which support Fast Ethernet connectivity at 10/100 Mbps. This high port density allows organizations to connect multiple devices without the need for additional networking hardware, simplifying setup and reducing costs. The switch employs autosensing technology, enabling it to automatically detect and configure the optimal connection speed for each connected device.

The ELS100-24TX supports advanced features such as VLAN (Virtual Local Area Network) functionality, permitting network administrators to segment traffic for better management and security. With VLAN support, businesses can effectively separate different departments or functions, ensuring that sensitive data remains protected within its own network segment.

Additionally, the switch incorporates Spanning Tree Protocol (STP), which is crucial for preventing broadcast storms and ensuring network stability. STP helps maintain loop-free topology in redundant network configurations, making it an essential feature for enterprises that rely on high availability.

Another impressive aspect of the Cabletron ELS100-24TX is its support for Quality of Service (QoS). This functionality allows network managers to prioritize specific types of traffic, ensuring that critical applications—such as voice over IP (VoIP) or video conferencing—receive the necessary bandwidth for optimal performance.

In terms of management, the ELS100-24TX features a user-friendly interface and provides various management protocols, including SNMP (Simple Network Management Protocol). This makes it easier for system administrators to monitor network performance, troubleshoot issues, and configure settings efficiently.

The robust design of the ELS100-24TX offers reliable operation, making it suitable for a wide range of applications. With its solid performance, excellent feature set, and ease of use, the Cabletron Systems ELS100-24TX is a valuable asset for any organization looking to strengthen its network capabilities.