AT-S41 Version 1.1.4 Management Software for the AT-8326 and AT-8350 Series Fast Ethernet Switches Software Release Notes Please read this document before you begin to use the AT-S41 management software. Product Documentation For hardware installation instructions, refer to the following guides: AT-8326GB Installation Guide (PN 613-50282-00) AT-8350GB Installation Guide (PN 613-50307-00) For management instructions, refer to the following guides: AT-S41 Version 1.0 Management Software User s Guide for the AT-8326GB Fast Ethernet Switch (PN 613-50283-00) AT-S41 Version 1.0 Management Software User s Guide for the AT-8350GB Fast Ethernet Switch (PN 613-50308-00) The installation guides are provided on the documentation CDs included with the products. The user guides are available from the Allied Telesyn web site at www.alliedtelesyn.com. Supported Platforms AT-S41 Version 1.1.4 management software is supported on the following switches: AT-8326GB Fast Ethernet Switch AT-8350GB Fast Ethernet Switch PN 613-50471-00 Rev A 1 Allied Telesyn, Inc.
Resolved Issues The switch was vulnerable to outside attack through a web server. (Reported in Customer Ticket #102645.) A switch would process OSPF packets instead of simply passing them. (Reported in Customer Ticket #104485.) The web browser interface did not display the ports of VLANs learned through GVRP as tagged ports. (Reported in Customer Ticket #104319.) The switch would accept management packets from any VLAN. You can now specify the Default VLAN (VID 1) as the management VLAN or you can continue to manage via any VLAN. (Reported in Customer Ticket #104317.) Running a Telnet management session during periods of heavy broadcast traffic caused the switch to stop forwarding packets. A high volume of SNMP traps caused the switch or management session to freeze. The switch would fail to recover after a physical data loop in the topology had been broken. A switch running GVRP stopped forwarding packets if the network administrator, using a web browser, changed the PVID of a port that matched the VID of a dynamically learned VLAN. (Reported in Customer Tickets #94291 and #92147.) A switch dropped IGMP reports from a host node if the node was connected to the switch through a tagged port. (Reported in Customer Ticket #94895.) Multiple Telnet or web browser management sessions during periods of heavy network traffic caused the master switch to lose its IP address. (Reported in Customer Ticket #93953.) A stack stopped forwarding traffic if it received multiple fragmented multicast packets. (Reported in Customer Ticket #88786.) A stack stopped forwarding traffic if it received two jumbo frames (greater than 1522 bytes) in succession. (Reported in Customer Ticket #100308.) A slave module would lose its configuration, including VLANs, if it was rebooted or powercycled. (Reported in Customer Ticket #99990.) Creating a new VLAN from a web browser management session using a VID of an existing VLAN overwrote the existing VLAN, instead of generating an error message. AT-S45 now displays an error message. Modifying VLANs when traffic was present occasionally resulted in VLAN instability, where flooded packets would cross VLAN boundaries. Flow control failed to work after power cycling the switch. PN 613-50471-00 Rev A 2 Allied Telesyn, Inc.
The VID range displayed by the software when the administrator deleted a VLAN was 1 to 4094. However, the Default VLAN with a VID of 1 cannot be deleted. The range has been changed to 2 to 4094. Operational Notes You must reset a switch to the factory default settings before downloading a configuration file. Port trunking using Gigabit Ethernet ports in a slave switch in a stack is not supported. Port trunking using Gigabit Ethernet ports in a master switch is supported. The auto-mdi/mdix feature on a switch port is operable only when the port is using Auto- Negotiation to set speed and duplex mode. If a port s speed and duplex mode are set manually, the auto-mdi/mdix feature is disabled and the port s wiring configuration is set to MDI-X. Manually setting a port s speed and duplex mode may require the use of a crossover cable when connecting an end node to the port. If you manually configure a switch port to 100 Mbps, full-duplex, but the end node is operating at only 10 Mbps, the link LED on the switch port will be off, but the link LED on the end node might be on, erroneously indicating a valid link. To resolve the issue, be sure to always configure a switch port to the same speed and duplex mode as its end node, or configure the port to use Auto-Negotiation. The Port Based VLAN mode described in pages 106 to 111 of the AT-S41 User s Guide is not supported and has been removed from the software. A dynamic MAC address learned on a tagged port will remain in the forwarding database until aged out by the aging timer, even when the port on which the address was learned is changed from tagged to untagged, the port is moved to another VLAN, or the VLAN containing the port is deleted. This means a port that was a tagged member of a VLAN might continue to forward tagged packets to a destination address in a VLAN to which the port is no longer a member. Once the address has timed out, the port will stop forwarding the packets. The aging timer has a default value of 300 seconds. Allied Telesyn strongly recommends that you periodically back up a switch or stack s configuration via TFTP or Xmodem to an external file. The file can be used to restore a switch or stack s configuration if the configuration is lost or you want to return a stack to an earlier configuration. Allied Telesyn recommends that all switches in a stack have the same version of the AT-S41 management software. Since a master switch does not propagate its AT-S41 management software to slave switches, updating switch software requires removing each switch from the stack, operating it as a standalone unit and, once you have updated the software, adding the switch back to the stack. The master switch and first slave switch in a stack containing both AT-8326GB and AT-8350GB switches should be AT-8326GB switches. The AT-8350GB switches should come after any AT-8326GB switches in a stack. PN 613-50471-00 Rev A 3 Allied Telesyn, Inc.
The backup IP feature enables the master switch to forward its IP address to a slave switch so that the slave switch can assume the role of master switch of a stack should the original master switch be removed or powered off. However, the master switch does not forward its subnet mask and the default gateway address. In order for the backup IP address feature to function properly, you need to manually assign the slave switch the subnet mask and default gateway address. Assigning these addresses requires removing the slave switch from the stack and running it as a standalone switch. IGMP snooping might take twice the host/router age time to time out a host node that has stopped sending reports. A port trunk can contain up to four 10/100 Mbps ports. A port trunk cannot contain any tagged ports. The default setting for priority weight of 1:0 (high:low) cannot be change. Packets in the low priority queue are forwarded only when the high priority queue is empty. If you are unable to establish a remote management session with a switch and you see a TXDMA error message on your console while establishing a local management session, turn on the broadcast storm control feature on the switch. If you need to replace the master switch in a stack, note the following: - You must save the stack s current configuration to a TFTP server before removing the master switch. You must restore the configuration once the new master switch has been installed. - You must power down the entire stack before removing a master switch. - Prior to installing a new master switch in the stack, run it as an standalone switch and check to be sure that it has the most recent software. If it does not, upgrade it as necessary. - Once you have installed the new master switch in the stack, power up the stack and assign the master switch an IP address or activate DHCP. - Once the new master is installed and an IP address has been assigned, download the stack s configuration from the configuration file saved to the TFTP server. If you need to replace a slave switch in a stack, note the following: - You should save the stack s current configuration to a TFTP server before removing the slave switch. The configuration can be used to restore the stack s settings should they be lost when the new slave switch is installed. - You must power down the entire stack before removing a slave switch. - Prior to installing the new slave switch in the stack, you should run it as an standalone switch and check to be sure that it has the save version of software as the master switch in the stack. If it does not, upgrade it as necessary. PN 613-50471-00 Rev A 4 Allied Telesyn, Inc.
- If the slave switch will be functioning as the backup IP switch, you must assign it the subnet mask and, if appropriate, a gateway address before adding it to the stack. - Once you have installed the new slave switch in the stack, power up the stack and check the stack configuration settings. If necessary, restore the configuration settings using the configuration file you saved to the TFTP server.switch. PN 613-50471-00 Rev A 5 Allied Telesyn, Inc.
Contacting Allied Telesyn This section provides Allied Telesyn contact information for technical support as well as sales or corporate information. Online Support You can request technical support online by accessing the Allied Telesyn Knowledge Base from the following web site: http://kb.alliedtelesyn.com. You can use the Knowledge Base to submit questions to our technical support staff and review answers to previously asked questions. Email and Telephone Support For Technical Support via email or telephone, refer to the Support & Services section of the Allied Telesyn web site: http://www.alliedtelesyn.com. Returning Products Products for return or repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to Allied Telesyn without a RMA number will be returned to the sender at the sender s expense. To obtain a RMA number, contact Allied Telesyn s Technical Support at our web site: http:// www.alliedtelesyn.com. For Sales or Corporate Information You can contact Allied Telesyn for sales or corporate information at our web site: http:// www.alliedtelesyn.com. To find the contact information for your country, select Contact Us - > Worldwide Contacts. Management Software Updates New releases of management software for our managed products can be downloaded from either of the following Internet sites: Allied Telesyn web site: http://www.alliedtelesyn.com Allied Telesyn FTP server: ftp://ftp.alliedtelesyn.com To download new software from the Allied Telesyn FTP server from your workstation s command prompt, you will need FTP client software and you must log in to the server. Enter anonymous as the user name and your email address for the password. Allied Telesyn, Inc. 960 Stewart Drive, Suite B, Sunnyvale, CA 94085 USA Copyright 2003 Allied Telesyn, Inc. All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc. PN 613-50471-00 Rev A 6 Allied Telesyn, Inc.