User manual TRENDNET TEG-S224S

[. . . ] TEG-S224 Series Stackable NWay Ethernet Switch User's Guide First Edition (Feb. 2000) Printed In Taiwan RECYCLABLE FCC Warning This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this user's guide, may cause harmful interference to radio communications. [. . . ] Available speeds are 2400, 9600, 19, 200 and 38, 400 bits per second. The default setting in this Switch version is 9600. 64 Using the Console Interface Stackable NWay Ethernet Switch User's Guide The top of the screen displays the current settings for Console Timeout and Serial Port as well as the Baud Rate, Character Size, and Stop Bit for Out of Band and Console settings, respectively. Configure Switch Stack The Switch Stack Configuration screen shows various pieces of information about your Switch, and allows you to set the System Name, System Location, and System Contact. These settings can be retrieved from the Switch using SNMP requests, allowing these settings to be used for network management purposes. Choose Configure Switch Stack to access the second item o the n System Configuration menu. The following screen appears: Figure 6-10. Switch Stack Configuration screen The fields you can set are: ?System Name Corresponds to the SNMP MIB II variable system. sysName, and is used to give a name to the Switch for administrative purposes. The Switch's fully qualified Using the Console Interface 65 Stackable NWay Ethernet Switch User's Guide domain name is often used, provided a name has been assigned. System Location Corresponds to the SNMP MIB II variable system. sysLocation, and is used to indicate the physical location of the Switch for administrative purposes. System Contact Corresponds to the SNMP MIB II variable sysContact, and is used to give the name and contact information for the person responsible for administering the Switch. Information of Individual Switch Unit This screen allows you to view information for each Switch in your stack, including the Module, Type, and Hardware Version. Press Information of Individual Switch Unit on the Switch Stack Configuration screen to access the Information of Individual Switch Unit screen: Figure 6-11. Information of Individual Switch Unit screen Use the space bar to select the desired Switch in your stack. 66 Using the Console Interfa ce Stackable NWay Ethernet Switch User's Guide Advance Settings The Configure Advanced Switch Features screen allows you to set an expiration time for MAC address entries and enable or disable auto-partitioning on all ports. Press ADVANCE SETTINGS on the Switch Stack Configuration screen to access the Configure Advanced Switch Features screen: Figure 6-12. Configure Advanced Switch Features screen The fields you can set are: ?Port Auto-Partition Capability on All Ports When this function is enabled, if too many consecutive collisions occur on an individual port, the port will be blocked off until a good packet is seen on the wire. If a port is partitioned, the Switch can only transmit data, not receive it. Head Of Line (HOL) Blocking Prevention Enables or disables Head-Of-Line Blocking Prevention. Head-of Line blocking occurs when a packet originating on Port 1, for instance, needs to be forwarded to Ports 2 and 3. If Port 2 is occupied (causing the Using the Console Interface 67 Stackable NWay Ethernet Switch User's Guide packet to be held in memory until the port is free), the packet destined for Port 3 will also be delayed, even though the port may be free. Cumulatively, these delays can have a noticeable effect on overall network performance. Enabling HOL Blocking Prevention prevents Head-of-Line blocking from occurring, meaning that the packet destined for Port 3 gets delivered immediately. Configure Port The port configuration screen allows you to change the port state in the case when you would like to partition a port due to e xcessive collision, or for observation, device repair, or security reasons. Great caution, however, must be observed when partitioning a port; you should make sure that the partitioned port is not being used as the port to control or monitor the condition of other devices. Figure 6-13. [. . . ] This enables the settings from one switch to be uploaded to another switch without their IP settings being the same (and thus coming into conflict). Commands: ?Code_type ­ This command tells the Switch the type of file you wish to upload to the Switch. Possible Code_types are PROM, RUNTIME, or CONFIG. This should always be the first setting. [. . . ]