Enterasys 802.1Q Especificações

9033820-03VERTICAL HORIZONVH-2402S2 / VH-2402SM2FAST ETHERNET SWITCHConfiguration Guide

2 Management Overview VH-2402S2Backup Management AgentNote the following points about master and backup management agents:• The VH-SMGMT2 with softwa

92 Spanning Tree Concepts VH-2402S2Spanning Tree Protocol in a NetworkFigure A-1 illustrates the use of three VH-2402S2 switches to establish an effe

9033820-03 Spanning Tree Concepts 93Spanning Tree Protocol ParametersSeveral configuration parameters control the operation of the Spanning Tree Prot

94 Spanning Tree Concepts VH-2402S2Spanning Tree Protocol OperationWhen the Spanning Tree Protocol is enabled for the first time or when there is a c

9033820-03 Spanning Tree Concepts 95There are five (5) states that the ports can be in for spanning tree:• Blocking: A port in this state does not pa

96 Spanning Tree Concepts VH-2402S2

9033820-03 Virtual LANs (VLANs) 97APPENDIX B. VIRTUAL LANS (VLANS)VLANs and Frame TaggingThe VH-2402S2 switch supports IEEE 802.1Q-compliant virtual

98 Virtual LANs (VLANs) VH-2402S2VH-2402S2 VLAN ConfigurationVLAN operation on the VH-2402S2 switch is enabled by default. Therefore, all frames are

9033820-03 Virtual LANs (VLANs) 99Forwarding Tagged/Untagged Frames Ports can be assigned to multiple tagged or untagged VLANs. Each port on the swit

100 Virtual LANs (VLANs) VH-2402S2Forwarding Traffic with Unknown VLAN TagsThe VH-2402S2 switch only supports 256 VLANs with VLAN IDs ranging from 1

9033820-03 Class of Service 101APPENDIX C. CLASS OF SERVICEClass of Service support on the VH-2402S2 switch allows you to assign mission-critical dat

9033820-03 Management Overview 3Closed-Loop StackThe VH-2402S2 switches can be stacked together by installing optional Stacking Modules. The VH-STACK

102 Class of Service VH-2402S2Figure C-1 shows priority queuing operating within a switch. Frames entering the switch through ports 1 and 4 are tagge

9033820-03 IP Multicast Filtering 103APPENDIX D. IP MULTICAST FILTERINGIGMP Snooping and IP Multicast FilteringThe Internet Group Management Protocol

104 IP Multicast Filtering VH-2402S2

9033820-03 Index 1INDEXAaging time, configuring, 81Auto-negotiation, configuring, 80BBootP, configuring, 82bridge MIB extensions, 36broadcast storm co

2 Index VH-2402S2SNMPagent, 1communities, 23configuring access, 74management, 1, 87MIB extensions, 90operations, 88traps, 88snooping, IGMP, 103softwa

150200000000A R01

4 Management Overview VH-2402S2Telnet ConnectionAfter configuring the switch’s IP parameters, you can use a Telnet connection to access the on-board

9033820-03 VH-2402S2 User Interface 52. VH-2402S2 USER INTERFACEOverviewAccess is gained to the console menus by connecting a terminal to the console

6 VH-2402S2 User Interface VH-2402S2User AccessOnce a direct connection to the serial port or a Telnet connection is established, the login screen fo

9033820-03 VH-2402S2 User Interface 7Factory DefaultsTable 2-1 lists the default settings for switch configuration parameters. Each parameter can be

8 VH-2402S2 User Interface VH-2402S2Terminal Baud Rate AutoUser Names admin, guestVirtual LANsAcceptable VLAN Frame Type AllConfigurable PVID Tagging

9033820-03 VH-2402S2 User Interface 9Main MenuThe Main Menu is the first screen seen after successfully logging into the system. Figure 2-2 shows the

10 VH-2402S2 User Interface VH-2402S2Management ConfigurationSpecifies if management access to the switch is available from all VLANs or restricted t

9033820-03 VH-2402S2 User Interface 11System Information MenuUse the System Information Menu to display a basic description of the switch, including

12 VH-2402S2 User Interface VH-2402S2Displaying System InformationUse the System Information screen to display descriptive information about the swit

9033820-03 VH-2402S2 User Interface 13Displaying Switch Version and Module Information Use the Switch Information screen to display hardware/firmware

14 VH-2402S2 User Interface VH-2402S2Displaying Stacking InformationUse the Stacking Information screen to display information about the state of a c

9033820-03 VH-2402S2 User Interface 15Management Setup MenuAfter initially logging onto the system, adjust the communication parameters for your cons

16 VH-2402S2 User Interface VH-2402S2Changing the Network Configuration Use the Network Configuration menu to set the bootup option, configure the sw

9033820-03 VH-2402S2 User Interface 17IP ConfigurationUse the IP Configuration screen to set the bootup option, or configure the switch’s IP paramete

18 VH-2402S2 User Interface VH-2402S2IP State USER-CONFIGSpecifies whether IP functionality is enabled via manual configuration, or set by Boot Proto

9033820-03 VH-2402S2 User Interface 19IP Connectivity Test (Ping)Use the IP Connectivity Test to see if another site on the Internet can be reached.

20 VH-2402S2 User Interface VH-2402S2HTTP Configuration Use the HTTP Configuration screen to enable/disable the on-board Web agent, and to specify t

9033820-03 VH-2402S2 User Interface 21Configuring the Serial PortYou can access the on-board configuration program by attaching a VT100 compatible de

Notice9033820-03 iNOTICEEnterasys Networks reserves the right to make changes in specifications and other information contained in this document witho

22 VH-2402S2 User Interface VH-2402S2Assigning SNMP ParametersUse the SNMP Configuration screen to display and modify parameters for the Simple Netwo

9033820-03 VH-2402S2 User Interface 23Configuring Community NamesThe following figure and table describe how to configure the community strings autho

24 VH-2402S2 User Interface VH-2402S2Configuring IP Trap ManagersThe following figure and table describe how to specify management stations that will

9033820-03 VH-2402S2 User Interface 25Console Login Configuration Use the Management Setup: Console Login Configuration to restrict management access

26 VH-2402S2 User Interface VH-2402S2Downloading System Software Using TFTP Protocol to Download Over the NetworkUse the TFTP Download menu to load s

9033820-03 VH-2402S2 User Interface 27Saving the System ConfigurationUse the Configuration Save & Restore menu to save the switch configuration s

28 VH-2402S2 User Interface VH-2402S2Configuring Management AccessUse the Management Configuration menu to define which VLAN has management access to

9033820-03 VH-2402S2 User Interface 29Configuring the SwitchThe Device Control menu is used to control a broad range of functions, including port con

30 VH-2402S2 User Interface VH-2402S2Global VLAN ConfigurationDisplays basic VLAN information, such as VLAN version number and maximum VLANs supporte

9033820-03 VH-2402S2 User Interface 31Configuring Port ParametersUse the Port Configuration menus to set or display communication parameters for any

Noticeii 9033820-03

32 VH-2402S2 User Interface VH-2402S2Viewing the Current Port ConfigurationThe Port Information screen displays the port type, status, link state, an

9033820-03 VH-2402S2 User Interface 33Port Security ConfigurationUse the Port Security Configuration screen to enable and configure port security for

34 VH-2402S2 User Interface VH-2402S2Configuring Port Trunks Port trunks can be used to increase the bandwidth of a network connection or to ensure f

9033820-03 VH-2402S2 User Interface 35You can use the Port Trunking Configuration screen set up port trunks as shown below:Figure 2-24. Port Trunki

36 VH-2402S2 User Interface VH-2402S2Configuring Bridge MIB ExtensionsThe Bridge MIB includes extensions for managed devices that support Traffic Cla

9033820-03 VH-2402S2 User Interface 37Bridge SettingsTraffic Class* Multiple traffic classes are supported by this switch as indicated under Bridge C

38 VH-2402S2 User Interface VH-2402S2Using the Spanning Tree AlgorithmThe Spanning Tree Algorithm can be used to detect and disable network loops, an

9033820-03 VH-2402S2 User Interface 39Parameter Default DescriptionSpanning Tree ProtocolEnabled Enable this parameter to participate in an STA compl

40 VH-2402S2 User Interface VH-2402S2Configuring STA for Ports or ModulesThe following figure and table describe STA configuration for ports or modul

9033820-03 VH-2402S2 User Interface 41Viewing the Current Spanning Tree ConfigurationThe Spanning Tree Information screen displays a summary of the S

9033820-03 Table of Contents iiiTABLE OF CONTENTS1. MANAGEMENT OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

42 VH-2402S2 User Interface VH-2402S2Displaying the Current Bridge STAThe parameters shown in the following figure and table describe the current Bri

9033820-03 VH-2402S2 User Interface 43Displaying the Current STA for Ports or ModulesThe parameters shown in the following figure and table are for p

44 VH-2402S2 User Interface VH-2402S2The rules defining port status are:• A port on a network segment with no other STA-compliant bridging device is

9033820-03 VH-2402S2 User Interface 45Using a Mirror Port for AnalysisYou can mirror traffic from any source port to a target port for real-time anal

46 VH-2402S2 User Interface VH-2402S2Configuring Broadcast Storm ControlUse the Broadcast Storm Control Configuration screen to enable broadcast stor

9033820-03 VH-2402S2 User Interface 47Configuring Virtual LANs You can use the VLAN configuration menu to assign any port on the switch to any of up

48 VH-2402S2 User Interface VH-2402S2Port Assignment VLAN ConfigurationUse this screen to configure port-specific settings for IEEE 802.1Q VLAN featu

9033820-03 VH-2402S2 User Interface 49Egress Ports VLAN ConfigurationUse this screen to modify the settings for an existing VLAN. You can add/delete

50 VH-2402S2 User Interface VH-2402S2VLAN Forbidden Ports ConfigurationUse this screen to prevent a port from being automatically added to a VLAN via

9033820-03 VH-2402S2 User Interface 51802.1Q VLAN Base InformationThe 802.1Q VLAN Base Information screen displays basic information on the VLAN type

iv Table of Contents VH-2402S2Displaying RMON Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Displaying the Unicast Address

52 VH-2402S2 User Interface VH-2402S2802.1Q VLAN Current Table InformationThis screen shows the current port members of each VLAN and whether or not

9033820-03 VH-2402S2 User Interface 53802.1Q VLAN Static Table ConfigurationUse this screen to create a new VLAN or modify the settings for an existi

54 VH-2402S2 User Interface VH-2402S2For example, the following screen displays settings for VLAN 2, which includes tagged ports 1-6, and forbidden p

9033820-03 VH-2402S2 User Interface 55Configuring Traffic ClassesIEEE 802.1p defines up to 8 separate traffic classes. This switch supports Quality o

56 VH-2402S2 User Interface VH-2402S2Port Priority ConfigurationThe default priority for all ingress ports is zero. Therefore, any inbound frames tha

9033820-03 VH-2402S2 User Interface 57802.1P Port Traffic Class InformationThis switch provides two priority levels with strict priority queuing for

58 VH-2402S2 User Interface VH-2402S2IGMP Multicast FilteringMulticasting is used to support real-time applications such as video conferencing or str

9033820-03 VH-2402S2 User Interface 59Configuring IGMPThis protocol allows a host to inform its local switch/router that it wants to receive transmis

60 VH-2402S2 User Interface VH-2402S2IGMP Member Port ConfigurationYou can use the IGMP Member Port Configuration screen to assign ports that are att

9033820-03 VH-2402S2 User Interface 61Multicast Router Port ConfigurationYou can use the Multicast Router Port Configuration screen to display the po

9033820-03 Table of Contents vCommunicating Between Bridges . . . . . . . . . . . . . . . . . . . . . . . . . 94Selecting a Root Bridge and Designate

62 VH-2402S2 User Interface VH-2402S2Monitoring the SwitchThe Network Monitor Menu provides access to port statistics, RMON statistics, IP multicast

9033820-03 VH-2402S2 User Interface 63Displaying Port StatisticsPort Statistics display key statistics from the Ethernet-like MIB for each port. Erro

64 VH-2402S2 User Interface VH-2402S2Displaying RMON Statistics Use the RMON Statistics screen to display key statistics for each port or media modul

9033820-03 VH-2402S2 User Interface 65Parameter DescriptionDrop Events The total number of events in which packets were dropped due to lack of resour

66 VH-2402S2 User Interface VH-2402S2Displaying the Unicast Address Table The Address Table contains the MAC addresses and VLAN identifier associated

9033820-03 VH-2402S2 User Interface 67Displaying the IP Multicast Registration TableUse the IP Multicast Registration Table to display all the multic

68 VH-2402S2 User Interface VH-2402S2Configuring Static Unicast AddressesUse the Static Unicast Address Table Configuration screen to manually config

9033820-03 VH-2402S2 User Interface 69Resetting the SystemSelect the System Restart Menu under the Main Menu to reset the management agent. The reset

70 VH-2402S2 User Interface VH-2402S2

9033820-03 Configuring & Monitoring the Switch 713. CONFIGURING & MONITORING THE SWITCHCommon TasksThe switch console menus allow you to modi

vi Table of Contents VH-2402S2

72 Configuring & Monitoring the Switch VH-2402S2Setting Password ProtectionThe VH-2402S2 switch is factory-configured with administrator access r

9033820-03 Configuring & Monitoring the Switch 73Assigning an IP AddressTo assign an IP address to the switch, do the following:1. Select Manage

74 Configuring & Monitoring the Switch VH-2402S2Setting SNMP Management AccessAccess to the VH-2402S2 switch through SNMP is controlled by commun

9033820-03 Configuring & Monitoring the Switch 75Configuring Port MirroringYou can mirror the traffic being switched on any port for the purposes

76 Configuring & Monitoring the Switch VH-2402S2Downloading Via the Serial PortA serial download is the easiest method to upgrade the VH-2402S2 s

9033820-03 Configuring & Monitoring the Switch 77Downloading Via TFTPTo perform a TFTP download, you must first configure the VH-2402S2 switch. T

78 Configuring & Monitoring the Switch VH-2402S2Configuring Spanning Tree ParametersThe VH-2402S2 switch supports the IEEE 802.1D Spanning Tree P

9033820-03 Configuring & Monitoring the Switch 79Configuring VLANsA virtual LAN (VLAN) is a group of devices on one or more LANs that are configu

80 Configuring & Monitoring the Switch VH-2402S23. For each stack unit, set individual port priorities by entering 0-3 for the low priority queu

9033820-03 Configuring & Monitoring the Switch 81Configuring the Unicast Address TableThe Unicast Address Table allows you to designate forwardin

9033820-03 Management Overview 11. MANAGEMENT OVERVIEWConfiguration Options For advanced management capability, the VH-SMGMT2 Vertical Horizon Manage

82 Configuring & Monitoring the Switch VH-2402S2Setting a Default GatewayThe default Gateway parameter defines the IP address of a router or othe

9033820-03 Configuring & Monitoring the Switch 835. Highlight the Mode field again, then select STATIC.6. Select [Apply] and press [Enter].The

84 Configuring & Monitoring the Switch VH-2402S2• To disable a single link within a port trunk, you should first remove the network cable, and th

9033820-03 Configuring & Monitoring the Switch 85To restore a switch configuration from a file on a TFTP server, do the following:1. From the co

86 Configuring & Monitoring the Switch VH-2402S2

9033820-03 SNMP Management 874. SNMP MANAGEMENTThe SNMP ProtocolSNMP (Simple Network Management Protocol) is a communication protocol designed specif

88 SNMP Management VH-2402S2There are three main operations defined in SNMP:• GET operations read information from the managed device, such as those

9033820-03 SNMP Management 89RFC 1213 (MIB-II)RFC 1213 provides management of system-level parameters, including TCP/IP protocol-related statistics,

90 SNMP Management VH-2402S2RFC 1757 (RMON MIB)RFC 1757 is a group defined under MIB-II. This MIB provides management for the RMON aspects of the swi

9033820-03 Spanning Tree Concepts 91APPENDIX A. SPANNING TREE CONCEPTSGeneralThe IEEE 802.1D Spanning Tree Protocol resolves the problems of physical