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Cabletron Systems SmartSTACK 100 ELS100-24TXM Installation And User Manual
Summary of SmartSTACK 100 ELS100-24TXM
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Smartstack 100 els100-24txm ethernet switch installation and user guide.
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Notice cabletron systems reserves the right to make changes in specifications and other informa- tion contained in this document without prior notice. The reader should in all cases consult cabletron systems to determine whether any such changes have been made. The hardware, firmware, or software de...
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Doc notice this digital apparatus does not exceed the class a limits for radio noise emissions from dig- ital apparatus set out in the radio interference regulations of the canadian department of communications. Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limite...
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Exclusion of warranty and disclaimer of liability 1. Exclusion of warranty. Except as may be specifically provided by cabletron in writing, cabletron makes no warranty, expressed or implied, concerning the pro- gram (including its documentation and media). Cabletron disclaims all warranties, other t...
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Declaration of conformity application of council directive(s): 89/336/eec 73/23/eec manufacturer’s name: cabletron systems, inc. Manufacturer’s address: 35 industrial way po box 5005 rochester, nh 03867 european representative name: mr. J. Solari european representative address: cabletron systems li...
Page 7: Table Of Contents
Els100-24txm table of contents i table of contents preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface i purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I audience . . . . . . . . ....
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Ii table of contents els100-24txm network cable requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 fiber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Els100-24txm table of contents iii downloading a software upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 downloading via the serial port . . . . . . . . . . . . . . . . . . . . . . . . . . 60 downloading via tftp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6...
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Iv table of contents els100-24txm handling duplicate paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 remapping network topology . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 appendix c. Flow control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 11: Preface
9032785 preface i preface purpose this guide provides information about the features and applications of the cabletron systems els100-24txm switch as well as instructions for configuring and monitoring the switch. Audience this guide is intended for ethernet local area network (lan) administrators a...
Page 12: Organization
Ii preface els100-24txm keyboard entries this guide uses the following conventions for keyboard entries: • when you read “enter,” type the text and press the [enter] key. • example: enter the gateway ip address and press the [enter] key. • when you read “select,” type the letter associated with the ...
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9032785 preface iii appendix a. Technical specifications: provides a list of standards compliance and certifications as well as physical and operational specifications. Appendix b. Spanning tree concepts: describes the operation of the spanning tree protocol and how it is used to resolve the problem...
Page 15: 1. Product Overview
9032785 product overview 1 1. Product overview description this installation and user guide describes the cabletron systems els100-24txm ethernet switch. The switch is ieee 802.1d-compliant and supports 24 ieee 802.3u 100base-tx fast ethernet ports. Each port can alternatively operate as an ieee 802...
Page 16: Features
2 product overview els100-24txm features • ports: - 24 dual-speed 10base-t/100base-tx ports using rj-45 connectors (mdi-x); 22 ports active when using modular slot for 100base-fx connections - 1 modular slot for 2 100base-fx ports using sc connectors • architecture: - 8-port 10/100 switch asic in a ...
Page 17: Front Panel
9032785 product overview 3 front panel figure 1-1 shows the front panel of the els100-24txm. Table 1-1 defines the els100-24txm front panel components. Figure 1-1. Els100-24txm front panel table 1-1. Front panel components name function 100base-fx fiber ports (ports 1 and 2)* fiber ports using sc fi...
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4 product overview els100-24txm figure 1-2 shows the link and activity leds for the 2 100base-fx ports (fiber port led functions are defined in table 1-2). The leds are positioned to the left of their associated port. Figure 1-2. 100base-fx port leds figure 1-3 shows the link and activity port leds ...
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9032785 product overview 5 the port leds are grouped to the left of their corresponding rj-45 ports. Table 1-2 defines the performance of the port leds for the 10base-t/ 100base-tx ports in both the default configuration and with the led mode button pressed. Table 1-2. Port leds defined name functio...
Page 20: Rear Panel
6 product overview els100-24txm rear panel figure 1-5 shows the els100-24txm rear panel and table 1-3 defines the rear panel components. Figure 1-5. Els100-24txm rear panel table 1-3. Rear panel components feature summaries the following summaries provide a brief description of els100-24txm features...
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9032785 product overview 7 spanning tree protocol the els100-24txm switch supports the ieee 802.1d spanning tree protocol. This protocol allows redundant connections to be created between different lan segments for purposes of fault tolerance. Two or more physical paths between different segments ca...
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8 product overview els100-24txm configuration and management interfaces the els100-24txm switch can be managed using any of the following three methods: • serial console, out-of-band an rs-232 connection, using a db-9 connector, is supported for out- of-band switch management. Serial console managem...
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9032785 product overview 9 • event: a function that operates with the alarm group to define an action that will be taken when an alarm condition occurs. The event may write a log entry and/or send a trap message. Rmon statistics group information is displayed on the port statistics screen in the con...
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10 product overview els100-24txm bootp/dhcp the bootstrap protocol (bootp) and the dynamic host configuration protocol (dhcp) provide for the capability of passing configuration information to hosts on a tcp/ip network. Using this process, network devices do not need to be configured before they can...
Page 25: Application Examples
9032785 product overview 11 class of service class of service support allows you to assign a higher priority to selected traffic passing through the switch. The els100-24txm switch supports class of service attributes per the ieee 802.1p draft standard using a priority queuing mechanism. This featur...
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12 product overview els100-24txm client/server network application to improve workstation performance in a client/server environment, the els100-24txm switch can be configured to provide 200 mbps full duplex fast ethernet connections to servers by connecting each to a dedicated switch port (figure 1...
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9032785 product overview 13 local backbone application the els100-24txm switch can be used in a local backbone application, connecting network segments together and providing file-server access (figure 1-6). Workgroup hubs are provided with a single connection to the switch while servers are put on ...
Page 29: 2. Installation
9032785 installation 15 2. Installation inspecting your shipment when you receive the shipment of your switch, check the package contents and make sure you have the following items: • els100-24txm fast ethernet switch • fiber port protective plugs inserted into switch • mounting ears and mounting sc...
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16 installation els100-24txm mounting the switch on a table or shelf mount the switch on a table or shelf in a position which allows access to the front panel rj-45 ports, visibility of the port leds, and access to the power cord. Make sure that the mounting surface can safely support the switch and...
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9032785 installation 17 mounting the switch on a wall the switch ships with two (2) multi-position mounting ears and four (4) mounting screws. Figure 2-1 shows the orientation of the mounting ears for attaching the ears to the switch for a wall mount application. Be sure that the wall surface can sa...
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18 installation els100-24txm mounting the switch in a rack the switch ships with two (2) multi-position mounting ears and four (4) mounting screws. Figure 2-2 shows the orientation of the mounting ears for attaching the ears to the switch for a rack mount application. Mount the switch with the front...
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9032785 installation 19 installing a fiber uplink module into the switch the fiber uplink module option permits you to enable 100base-fx fiber connections to the switch. A 2 port fiber module can be installed into the modular slot on the left side of the switch (figure 2-3). To install the fiber mod...
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20 installation els100-24txm connecting a terminal to the console port the console port is a serial rs-232 interface port that enables a connection to a terminal for performing switch monitoring and configuration functions. The terminal may be a pc or workstation running terminal emulation software,...
Page 35: Powering The Switch
9032785 installation 21 5. Configure the terminal to the following communication settings: 9600 baud, no parity, 8 data bits, 1 stop bit, no hardware flow control, ascii character set. Powering the switch to supply power to the switch, do the following: 1. Connect the power cord to the switch and to...
Page 36: Network Cable Requirements
22 installation els100-24txm • memory memory tests on the cpu ram are performed after the serial port test. No results are displayed on the console. After these two tests are performed, the operational software of the switch is loaded. A series of more extensive diagnostic tests are then conducted d...
Page 37: 10Base-T/100Base-Tx Ports
9032785 installation 23 10base-t/100base-tx ports the 10base-t/100base-tx ports use rj-45 connectors. Figure 2-6 shows an rj-45 connector being inserted into a port. Figure 2-6. Inserting an rj-45 connector into a port the 10base-t/100base-tx ports interface to utp cabling for connection to 10base-t...
Page 38: 100Base-Fx Fiber Ports
24 installation els100-24txm 100base-fx fiber ports the 100base-fx fiber ports use sc connectors. Figure 2-7 shows an sc fiber connector being inserted into a fiber port on the els100-24txm. Figure 2-7. Inserting an sc fiber connector into a fiber port depending on the fiber uplink module employed (...
Page 39: Overview
9032785 els100-24txm user interface 25 3. Els100-24txm user interface overview when you have connected a terminal to the console port, or used telnet to access the switch over the network, access is gained to the console menus. These menus allow you to reconfigure the switch from its factory default...
Page 40: User Access
26 els100-24txm user interface els100-24txm user access there are two modes of access to the user interface: read-only and read/write. Read-only access allows you to view switch information, but not modify any operating parameters. Read/write access allows you to both read and modify switch informat...
Page 41: Factory Defaults
9032785 els100-24txm user interface 27 factory defaults table 3-1 lists the factory default settings for the switch configuration parameters. Each of these parameters can be changed via the console menus or telnet. Table 3-1. Factory default settings parameter default value active aging time 300 aut...
Page 42: Menu Hierarchy
28 els100-24txm user interface els100-24txm menu hierarchy figure 3-2 shows the els100-24txm switch user interface menu hierarchy. Figure 3-2. Els100-24txm user interface menu hierarchy system configuration menu snmp configuration menu system name system location system contact ip address subnet mas...
Page 43: Main Menu
9032785 els100-24txm user interface 29 main menu the main menu is the first screen seen after successfully logging in to the system. Figure 3-3 shows the main menu and the accompanying table describes the main menu. Figure 3-3. Main menu main menu access control: read/write a. System configuration m...
Page 44: System Configuration Menu
30 els100-24txm user interface els100-24txm system configuration menu the system configuration menu enables modification of system-level switch configuration parameters. Select a from the main menu to view the system configuration menu. Figure 3-4 shows the system configuration menu and the accompan...
Page 45: Snmp Configuration Menu
9032785 els100-24txm user interface 31 snmp configuration menu the snmp configuration menu allows you to modify snmp-related configuration parameters. Select a from the system configuration menu to view the snmp configuration menu. Figure 3-5 shows the snmp configuration menu and accompanying table ...
Page 46: Switch Configuration Menu
32 els100-24txm user interface els100-24txm switch configuration menu the switch configuration menu allows you to modify switching-related configuration parameters. Select b from the main menu to view the switch configuration menu. Figure 3-6 shows the switch configuration menu and the accompanying ...
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9032785 els100-24txm user interface 33 forwarding table configuration menu the forwarding table configuration menu allows you to view and modify forwarding table parameters. The mac address of each forwarding table entry is displayed along with its type, disposition, and associated port number. Sele...
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34 els100-24txm user interface els100-24txm selection description display table redisplays the forwarding table. Make entry static makes a dynamic entry in the forwarding table static. Add static entry adds a static entry to the forwarding table. Delete static entry deletes a static entry from the f...
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9032785 els100-24txm user interface 35 spanning tree configuration menu the spanning tree configuration menu allows you to view and modify spanning tree parameters. Select b from the switch configuration menu to view the spanning tree configuration menu. A letter identifies selections that can be mo...
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36 els100-24txm user interface els100-24txm selection description spanning tree protocol enable allows you to enable (yes) or disable (no) the global spanning tree operation on the switch. Port configuration menu provides access to the spanning tree port configura- tion menu. Hello time (seconds) th...
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9032785 els100-24txm user interface 37 spanning tree port configuration menu the spanning tree port configuration menu allows you to view spanning tree configuration information for all of the ports in a table format. Select b from the spanning tree configuration menu to view the spanning tree port ...
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38 els100-24txm user interface els100-24txm spanning tree port #n configuration menu the spanning tree port #n configuration menu allows you to view spanning tree port configuration information for an individual port. Select a from the spanning tree port configuration menu to view the spanning tree ...
Page 53: Vlan Configuration Menu
9032785 els100-24txm user interface 39 vlan configuration menu the vlan configuration menu allows you to configure the operation of virtual lans (vlans) in the switch. Select c from the switch configuration menu to view the vlan configuration menu. Figure 3-11 shows the vlan configuration menu and t...
Page 54: Vlan Menu
40 els100-24txm user interface els100-24txm vlan menu the vlan menu displays the configuration of vlans in the switch and allows access to the vlan #n configuration menu to create and configure vlans. Select b from the vlan configuration menu to view the vlan menu. Figure 3-12 shows the vlan menu an...
Page 55: Vlan #n Configuration Menu
9032785 els100-24txm user interface 41 vlan #n configuration menu the vlan #n configuration menu allows you to configure a name for a specific vlan, add or remove a port in the vlan, and add or remove an egress port in the vlan. Select c from the vlan menu to view the vlan #n configuration menu. Fig...
Page 56: Vlan Port Menu
42 els100-24txm user interface els100-24txm vlan port menu the vlan port menu displays a table of vlan configuration information on a per port basis and allows you to modify the vlan port type. Select c from the vlan configuration menu to view the vlan port menu. Figure 3-14 shows the vlan port menu...
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9032785 els100-24txm user interface 43 class of service configuration menu the class of service configuration menu allows you to configure class of service settings for the system as well as to set the class of service for vlan tagged frames. Select d from the switch configuration menu to view the c...
Page 58: Port Priority Menu
44 els100-24txm user interface els100-24txm port priority menu the port priority menu allows you to modify and display a table which shows class of service configuration information on a per port basis. Select c from the class of service configuration menu to view the port priority configuration men...
Page 59: Port Menu
9032785 els100-24txm user interface 45 port menu the port menu allows you to display information for each port in a table format, as well as to access the port configuration menu. You can also refresh the screen information. Select c from the main menu to view the port menu. Figure 3-17 shows the po...
Page 60: Port Configuration Menu
46 els100-24txm user interface els100-24txm port configuration menu the port configuration menu allows you to configure port settings for a specific port. Select c from the port menu to view the port configuration menu. Figure 3-18 shows the port configuration menu and the accompanying table describ...
Page 61: Switch Statistics Screen
9032785 els100-24txm user interface 47 switch statistics screen the switch statistics screen provides a summary display of port-level statistics, and provides access to the port statistics screens. You can also clear or refresh the statistics. Select d from the main menu to view the switch statistic...
Page 62: Switch Summary Screen
48 els100-24txm user interface els100-24txm switch summary screen the switch summary screen allows you to display sum total statistics for all ports of the switch. You can also clear or refresh the statistics. Select s from the switch statistics screen to view the switch summary screen. Figure 3-20 ...
Page 63: Port Statistics Screen
9032785 els100-24txm user interface 49 port statistics screen the port statistics screen allows you to display statistics for each port on the switch. Many of these statistics correspond to the statistics group of rmon. You can also refresh or clear the statistics. Select s from the switch statistic...
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50 els100-24txm user interface els100-24txm field description multicasts transmitted total number of multicast frames transmitted on the port. Multicasts received total number of multicast frames received on the port. Bytes transmitted total number of bytes transmitted on the port. Bytes received to...
Page 65: General Information Screen
9032785 els100-24txm user interface 51 general information screen the general information screen allows you to view general system information. Select e from the main menu to view the general information screen. Figure 3-22 shows the general information screen and the accompanying table describes th...
Page 66: Download Software Menu
52 els100-24txm user interface els100-24txm download software menu the download software menu allows you to set up and initiate a software download. Select f from the main menu to view the download software menu. Figure 3-23 shows the download software menu and the accompanying table describes the d...
Page 67: Save Current Configuration
9032785 els100-24txm user interface 53 save current configuration the save current configuration screen ensures that all changes made to the els100-24txm switch via the console menus will be stored in the event of power outages or power cycles. To save your current configuration, do the following: 1...
Page 68: Reset
54 els100-24txm user interface els100-24txm reset the reset screen allows you to perform a switch hardware reset. You are first prompted as to whether or not to save the current switch configuration. To reset the switch, do the following: 1. Select j from the main menu to view the reset screen. The ...
Page 69: Common Tasks
9032785 configuring & monitoring the switch 55 4. Configuring & monitoring the switch common tasks the switch console menus allow you to modify default switch settings and configure the switch for network management. They also allow you to monitor switch performance and status. See section 3, “els10...
Page 70: Setting Password Protection
56 configuring & monitoring the switch els100-24txm setting password protection the els100-24txm switch is factory-configured with access rights to the console menus set to read/write. This setting allows anyone to use the console menus to modify any operational parameter. To protect the configurati...
Page 71: Assigning An Ip Address
9032785 configuring & monitoring the switch 57 assigning an ip address to assign an ip address to the switch, do the following: 1. Select system configuration menu from the main menu. 2. Select ip address from the menu and enter the ip address. Press [enter]. The ip address is now programmed. The su...
Page 72: Viewing Switch Statistics
58 configuring & monitoring the switch els100-24txm setting snmp management access access to the els100-24txm switch through snmp is controlled by community names. The community names set for the switch must match those used by the snmp management station for successful communication to occur. The s...
Page 73: Configuring Port Mirroring
9032785 configuring & monitoring the switch 59 configuring port mirroring you can mirror the traffic being switched on any port for the purposes of network traffic analysis and connection assurance. When port mirroring is enabled, one port in each group of eight becomes a monitor port for any one of...
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60 configuring & monitoring the switch els100-24txm downloading via the serial port a serial download is the easiest method to upgrade the els100-24txm switch software, requiring the least amount of equipment and configuration. To download switch software via the serial port, do the following: 1. Se...
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9032785 configuring & monitoring the switch 61 4. If necessary, configure the address of an ip gateway to reach the server from the switch using the default gateway field on the system configuration menu. 5. Configure the tftp server by copying the download file from the upgrade disk to an appropria...
Page 76: Configuring Vlans
62 configuring & monitoring the switch els100-24txm configuring vlans a virtual lan (vlan) is a group of devices on one or more lans that are configured such that they can communicate as if they were attached to the same wire. Because vlans are based on logical instead of physical connections, they ...
Page 77: Configuring Port Operation
9032785 configuring & monitoring the switch 63 to configure class of service, do the following: 1. Select class of service configuration menu from the switch configuration menu. 2. Turn the global switch class of service operation on or off by toggling the class of service enable option by pressing ...
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64 configuring & monitoring the switch els100-24txm 7. Select full duplex to toggle between yes (full duplex) and no (half duplex) mode on the port(s). 8. Select port speed to toggle between 10mbps and 100mbps speeds on the port(s). Configuring the forwarding table the forwarding table allows you to...
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9032785 configuring & monitoring the switch 65 to either make an existing dynamic entry static (make entry static) or delete a static entry (delete static entry), do the following: 1. Select the letter associated with the option. The following message prompt displays: enter mac address: 2. Enter the...
Page 80: Setting A Default Gateway
66 configuring & monitoring the switch els100-24txm setting a default gateway the default gateway parameter defines the ip address of a router or other network device to which ip packets are to be sent if destined for a subnet outside of that which the switch is operating. To set a default gateway, ...
Page 81: 5. Snmp Management
9032785 snmp management 67 5. Snmp management the snmp protocol snmp (simple network management protocol) is a communication protocol designed specifically for the purpose of managing devices or other elements on a network. Network equipment commonly managed with snmp includes hubs, switches, router...
Page 82: Mib Objects
68 snmp management els100-24txm there are three main operations defined in snmp: • operations that read information from the managed device, such as those used to obtain status or statistical data, are called get operations. • operations that change a functional parameter on the device, such as thos...
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9032785 snmp management 69 this mib reports information about the protocols and network interfaces supported on the agent itself, as well as other general information. The mib is divided into a number of groups, each of which corresponds to a specific protocol or set of information. Some groups are ...
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70 snmp management els100-24txm cabletron systems proprietary mib extensions areas of els100-24txm switch functionality not covered by the standard rfc mibs are specified in the cabletron systems private mib. This mib definition is specified separately from mib-ii. Areas covered in this mib include ...
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9032785 snmp management 71 table 5-1. System information variables table 5-2. Switch information variables continued on next page variable description serialno serial number of the unit. Tftpipaddress tftp server ip address for tftp downloads. Tftpfilename filename of the download upgrade file on th...
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72 snmp management els100-24txm table 5-2 switch information variables (continued) variable description switchmirroredport port to be mirrored from. Switchmirroringport port to be mirroring to. Switchxmitmirrorenable enable/disable mirroring of transmitted traffic out of the mirrored port to the mir...
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9032785 snmp management 73 table 5-3. Port variables compiling mib extensions: cabletron website the mibs supported by the els100-24txm switch must be compiled into the snmp network management platform before the switch can be managed. The supported mibs are available via the internet at the followi...
Page 89: General
9032785 technical specifications 75 appendix a. Technical specifications general standards compliance ieee 802.1d transparent bridging specifications (iso/iec 10038) ieee 802.1p traffic class expediting and dynamic multicast filtering ieee 802.1q virtual bridged local area networks ieee 802.2 local ...
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76 technical specifications els100-24txm electrical specifications input voltage: 100-240 vac input frequency: 50-60 hz maximum power consumption: 75 va physical height: 1.75 in. (4.4 cm) length: 16.0 in. (40.6 cm) width: 17.1 in. (43.4 cm mountable in a standard 19 in. Rack) weight: 10.5 lb. (4.8 k...
Page 91: Port Specifications
9032785 technical specifications 77 port specifications console port table a-1 shows the console port pin assignments. Table a-1. Rs-232 console port pin assignments 10base-t and 100base-tx ports the els100-24txm switch provides ieee 802.3u auto-negotiation on its 10base-t/100base-tx ports for 10/10...
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78 technical specifications els100-24txm mdi/mdi-x crossover cable wiring figure a-1 shows the wiring scheme for implementing a crossover cable if needed for connection to the switch’s 10base-t or 100base-tx ports. Such a cable may be required when connecting the switch to another switch or a hub de...
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9032785 technical specifications 79 country-specific requirements table a-3 lists the power cord set requirements by country and identifies the accredited agency within that country. Table a-3. Power cord set requirements by country note 1 flexible cord must be type ho5vv-f or ho3vv-f, 3-conductor, ...
Page 95: General
9032785 spanning tree concepts 81 appendix b. Spanning tree concepts general the ieee 802.1d spanning tree protocol resolves the problems of physical loops in a network by establishing one primary path between any two switches in a network. Any duplicate paths are barred from use and become standby ...
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82 spanning tree concepts els100-24txm spanning tree protocol in a network figure b-1 illustrates the use of three els100-24txm switches to establish an effective spanning tree configuration. Switches a, b and c are connected together in a redundant topology (more than one path between two points). ...
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9032785 spanning tree concepts 83 spanning tree protocol parameters several configuration parameters control the operation of the spanning tree protocol. Table b-1 describes the parameters and lists the els100-24txm switch default settings for each parameter. Table b-1. Spanning tree protocol defaul...
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84 spanning tree concepts els100-24txm spanning tree protocol operation when the spanning tree protocol is enabled for the first time or when there is a change in the network topology, such as a failure or the addition or removal of a component, the spanning tree protocol automatically sets up the a...
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9032785 spanning tree concepts 85 there are five (5) states that the ports can be in for spanning tree: • blocking: a port in this state does not participate in the transmission of frames, thus preventing duplication arising through multiple paths existing in the active topology of the bridged lan. ...
Page 101: Appendix C. Flow Control
9032785 flow control 87 appendix c. Flow control flow control is a mechanism which allows you to protect the switch from overload conditions and to keep additional traffic off the network when excessive congestion will result. Figure c-1 illustrates flow control for both half and full duplex applica...
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88 flow control els100-24txm the els100-24txm port statistics screen indicates the number of pause frames that have been sent, indicating the number of times full duplex flow control has occurred. For the full duplex pause frame mechanism to work, the device connected to the switch port must also su...
Page 103: Vlans and Frame Tagging
9032785 virtual lans (vlans) 89 appendix d. Virtual lans (vlans) vlans and frame tagging the els100-24txm supports ieee 802.1q-compliant virtual lans (vlans). This capability provides a highly efficient architecture for establishing vlans within a network and for controlling broadcast/ multicast tra...
Page 104
90 virtual lans (vlans) els100-24txm if the els100-24txm is so configured, and, if the frame does not already contain a tag, a vlan identifier is placed in a tag which is appended to frames as they are received by the switch. Within the switch and between switches compliant with ieee 802.1q, these i...
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9032785 virtual lans (vlans) 91 vlan egress ports the vlan egress ports parameter is used to assign ports to a vlan for carrying vlan tagged frames across a network. The assignment of egress ports does not affect the assignment of vlan ids to frames entering the switch. However, frames exiting the s...
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92 virtual lans (vlans) els100-24txm vlan hybrid ports a vlan hybrid port is used to connect one or more vlan-aware or vlan-unaware devices to the switch. Both tagged and untagged frames can be received and transmitted on hybrid ports. Egress ports should typically be configured as hybrid ports. Whe...
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9032785 virtual lans (vlans) 93 in example 3 in figure d-3b, an untagged frame arrives at the left port (1). The switch tags the frame with the pvid for vlan x (2). Since the destination mac address has already been learned as a tagged station on vlan x on the outgoing port, the frame is sent out wi...
Page 108: Vlan Application Example
94 virtual lans (vlans) els100-24txm vlan application example a network administrator can use vlans to define user groups regardless of the physical lan segment to which they are connected. The use of hybrid and access links can further refine traffic flow in a multi-switch environment. Figure d-4 s...
Page 109
9032785 class of service 95 appendix e. Class of service class of service support on the els100-24txm allows you to assign mission-critical data a higher priority through the switch by delaying less critical traffic during periods of congestion. Higher priority traffic through the switch is serviced...
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96 class of service els100-24txm figure e-1 shows priority queuing operating within a switch. Frames entering the switch through ports 1 and 4 are tagged as normal traffic and placed in a normal priority queue on the outbound port. Frames entering through ports 2 and 5 are tagged as high priority tr...
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9032785 acronyms & abbreviations 97 appendix f. Acronyms & abbreviations term definition 10base-t 10mbps twisted-pair ethernet 100base-fx 100mbps fiber fast ethernet 100base-tx 100mbps twisted-pair fast ethernet ansi american national standards institute asic application specific integrated circuit ...
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98 acronyms & abbreviations els100-24txm term definition rxd receive data snmp simple network management protocol stp spanning tree protocol tcp/ip transmission control protocol/internet protocol tftp trivial file transfer protocol txd transmit data utp unshielded twisted pair vlan virtual local are...
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9032785 index 99 index 100base-fx connectors, 24 10base-t/100base-tx connectors, 23 10base-t/100base-tx pinouts, 77, 79 802.1d spanning tree protocol, 61, 81 802.1d bridge, 6 802.1p, 95 802.1q, 90 802.3x, 87, 88 a architecture, 2 auto-negotiation, 9, 45, 46 configuring, 63 b base mac address, 51 boo...
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100 index els100-24txm i inspecting your shipment, 15 ip address see assigning, 57 l led mode button, 3, 4, 5 defined, 3 leds, 4, 5, 10 local backbone application, 13 login, 26 logout, 29, 53 m mac addresses, 64 main menu, 25, 29 max age, 36 mdi/mdi-x crossover cable wiring, 78 mdi/mdi-x crossover c...
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9032785 index 101 spanning tree protocol defaults, 83 standards compliance ieee, 75 store-and-forward, 7, 83, 98 subnet mask, 57 switch configuration menu, 29, 32 switch statistics, 58 switch statistics screen, 29, 47 switch summary screen, 48 system configuration menu, 29, 30 t telnet, 25 connectin...
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102 index els100-24txm.
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Document 591-0046-02a.