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Using the Spanning Tree Algorithm

7-8

Device Control Menu Screens

7.4

USING THE SPANNING TREE ALGORITHM

The Spanning Tree Algorithm (STA) is used to detect and disable network loops, and to provide 
backup links between switches, bridges or routers. This allows the switch to interact with other 
bridging devices (that is, an STA-compliant switch, bridge or router) in your network to ensure that 
only one route exists between any two stations on the network. The Spanning Tree 
Configuration:Selection Menu screen (

Figure 7-4

) provides a menu selection to gain access to the 

STA Bridge Configuration and STA Port Configuration screens to configure the STA functions. 

To view the current STA bridge and port information, refer to 

Section 7.5

.

For a more detailed description of how to use this algorithm, refer to 

Appendix A

. 

Figure 7-4

Spanning Tree Configuration:Selection Menu Screen

         

STA Bridge Configuration

         STA Port Configuration

<RETURN>

3583_24

Содержание 5G1XX

Страница 1: ...MATRIX E5 Series Modules 5H1xx and 5G1xx Local Management User s Guide 9033583 01...

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Страница 3: ...AL OR THE INFORMATION CONTAINED IN IT EVEN IF ENTERASYS NETWORKS AND ITS LICENSORS HAVE BEEN ADVISED OF KNOWN OR SHOULD HAVE KNOWN THE POSSIBILITY OF SUCH DAMAGES Enterasys Networks Inc 35 Industrial...

Страница 4: ...erce which prohibit export or diversion of certain technical products to certain countries unless a license to export the product is obtained from the U S Government or an exception from obtaining suc...

Страница 5: ...mentation and media ENTERASYS DISCLAIMS ALL WARRANTIES OTHER THAN THOSE SUPPLIED TO YOU BY ENTERASYS IN WRITING EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABI...

Страница 6: ......

Страница 7: ...n Band vs Out of Band 1 2 1 2 Navigating Local Management Screens 1 3 1 3 Local Management Requirements 1 3 2 LOCAL MANAGEMENT REQUIREMENTS 2 1 Management Terminal Setup 2 1 2 1 1 Console Cable Connec...

Страница 8: ...U SCREENS 7 1 Configuring the Switch 7 1 7 2 Configuring Port Parameters 7 4 7 3 Viewing the Current Port Configuration 7 6 7 4 Using the Spanning Tree Algorithm 7 8 7 4 1 Configuring STA Bridge 7 9 7...

Страница 9: ...10 3 10 4 Checking Network Configuration Status 10 3 10 5 Connecting via Telnet 10 3 10 6 Setting SNMP Management Access 10 3 10 7 Viewing Switch Statistics 10 4 10 8 Configuring Port Mirroring 10 4...

Страница 10: ...Tree Features A 1 A 2 Spanning Tree Protocol in a Network A 2 A 3 Spanning Tree Protocol Parameters A 3 A 3 1 Spanning Tree Protocol Operation A 4 A 3 2 Communicating Between Bridges A 4 A 3 3 Selecti...

Страница 11: ...IP Trap Managers Screen 6 13 6 10 Console Login Configuration Screen 6 14 6 11 Startup Configuration Screen 6 15 6 12 TFTP Download Screen 6 17 7 1 Device Control Menu Screen 7 2 7 2 Port Configuratio...

Страница 12: ...02 1Q VLAN Port Configuration Screen 7 32 7 21 Static Unicast Address Table Configuration Screen 7 34 8 1 Network Monitor Menu Screen 8 1 8 2 Port Statistics Screen 8 2 8 3 RMON Statistics Screen 8 4...

Страница 13: ...Page 2 1 VT Terminal Setup 2 3 3 1 Factory Default Settings 3 5 7 1 SmartTrunk Ports Associated with Group IDs 7 21 10 1 SmartTrunk Configuration Ports Associated with Group IDs 10 12 A 1 Spanning Tre...

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Страница 15: ...pplication Identify and operate the types of fields used by Local Management Navigate through Local Management fields and menus Use Local Management screens to perform management operations Establish...

Страница 16: ...ddresses for the module set the Administrator and User passwords and set the community string which controls access to the on board SNMP agent via in band management software Chapter 7 Device Control...

Страница 17: ...priority traffic through the switch is serviced first before lower priority traffic Appendix D IP Multicast Filtering introduces you to the Internet Group Management Protocol IGMP This protocol runs...

Страница 18: ...d in numerals signals the decimal point indicator e g 1 75 equals one and three fourths Or periods used in numerals signal the decimal point in Dotted Decimal Notation DDN e g 000 000 000 000 in an IP...

Страница 19: ...products in the network A description of your network environment layout cable type etc Network load and frame size at the time of trouble if known The device history i e have you returned the device...

Страница 20: ......

Страница 21: ...Protocol This SNMP agent permits a switch to be managed from any PC in the network using in band management software The switch module also includes an embedded HTTP Web agent This Web agent can be ac...

Страница 22: ...gure the switch module 1 1 2 In Band vs Out of Band Network management systems are often classified as either in band or out of band In band network management passes data along the same medium cables...

Страница 23: ...edge of a screen when moved in the direction of that edge wraps around to the outermost selectable item on the opposite side of the screen which is on the same line or column 1 3 LOCAL MANAGEMENT REQU...

Страница 24: ......

Страница 25: ...SETUP The switch module provides one communication port labeled COM which supports a management terminal connection To access Local Management connect one of the following systems to the COM port Dig...

Страница 26: ...nnection 2 1 2 Management Terminal Setup Parameters Table 2 1 lists the setup parameters for the local management terminal NOTE If using a modem between the VT compatible device and the COM port of th...

Страница 27: ...7 Bit Controls VT100ID Normal Cursor Keys UPSS DEC Supplemental Communications Setup Menu Transmit Receive XOFF Bits Parity Stop Bit Local Echo Port Transmit Auto Answerback 2400 4800 9600 19200 Reco...

Страница 28: ...ce the switch module is configured you can establish a Telnet session from any TCP IP based node on the network Telnet connections to the switch module require the community name passwords assigned in...

Страница 29: ...the Password screen to enter a Local Management session Section 3 3 The default settings for each switch configuration parameter These are the parameters that can be changed via a terminal connected...

Страница 30: ...s RMON Statistics Unicast Address Table IP Multicast Registration Table Management Setup Menu System Information Switch Information Network Configuration Menu SNMP Communities Console Login Configurat...

Страница 31: ...t similar to the sample Main Menu shown in Figure 3 2 The information is divided into the following parts Menu Name includes access privileges Selectable Items Screen Prompt for menu selections and en...

Страница 32: ...irect connection to the serial port or a Telnet connection is established the login Password screen Figure 3 3 for the on board Local Management configuration program displays Figure 3 3 Password Scre...

Страница 33: ...meric characters and are not case sensitive 3 4 FACTORY DEFAULTS Table 3 1 lists the default settings for switch configuration parameters Each parameter can be changed via the console menus or Telnet...

Страница 34: ...ts 128 Enabled System Configuration Password Screen Time out Send Authentication Fail Traps SNMP Community Names Terminal Baud Rate User Name none 10 minutes Enabled Public private 9600 public Virtual...

Страница 35: ...screen is the first screen to display This chapter describes the Main Menu screen introduces the screens that you can use to obtain system operating information change operating parameters obtain mod...

Страница 36: ...functions are described below Figure 4 1 Main Menu Selection Description System Information Menu For details refer to Chapter 5 System Information Switch Information Provides basic system description...

Страница 37: ...to update your system in band Device Control Menu For details refer to Chapter 7 Port Configuration Port Information Spanning Tree Configuration Spanning Tree Information Mirror Port Configuration Sma...

Страница 38: ...ures port specific VLAN settings including PVID and ingress filtering Used to manually configure host MAC addresses in the unicast table Network Monitor Menu For details refer to Chapter 8 Port Statis...

Страница 39: ...Navigation Path Password Main Menu System Information Menu 5 1 SYSTEM INFORMATION MENU SCREEN Use the System Information Menu screen Figure 5 1 described below to access the System Information and Sw...

Страница 40: ...ystem Information Provides basic system description including system object ID up time name contact and location Switch Information Shows hardware firmware version numbers serial number and number of...

Страница 41: ...system System Up Time Length of time the current management agent has been running Note that the first value is 1 100 seconds System Name Name assigned to the switch system System Contact Contact pers...

Страница 42: ...ial number and slot number it occupies in the chassis Figure 5 3 Switch Information Screen Parameter Description Hardware Version Hardware version of the main board Firmware Version System firmware ve...

Страница 43: ...n parameters for your console to ensure a reliable connection Serial Port Configuration Refer to Section 6 3 Specify the IP address for the module Network Configuration IP Configuration Refer to Secti...

Страница 44: ...fer to Section 6 2 Serial Port Configuration Sets communication parameters for the serial port including management mode baud rate console time out and screen data refresh interval For details refer t...

Страница 45: ...s allowed The screen shown below is described in the following table Figure 6 2 Network Configuration Menu Screen Startup Configuration Used to disable the extended system diagnostics during system bo...

Страница 46: ...Used to set the bootup option or configure the switch s IP parameters IP Connectivity Test Ping Used to test IP connectivity Ping to a specified device HTTP Configuration Used to enable the Web Agent...

Страница 47: ...5 255 0 0 Subnet mask of the agent you have selected This mask identifies the host address bits used for routing to specific subnets Gateway IP 0 0 0 0 Gateway used to pass trap messages from the swit...

Страница 48: ...ddress IP address of the site that you want to ping Test Time The number of ICMP echo requests to send to the specified site Range 1 1000 Interval The interval in seconds between pinging the specified...

Страница 49: ...ill provide HTTP service The screen shown below is described in the following table Figure 6 5 HTTP Configuration Screen Parameter Description HTTP Server Enables disables access to the on board web a...

Страница 50: ...nformation on connecting to this port refer to Chapter 2 The communication parameters for this port can be accessed from the Serial Port Configuration screen Figure 6 6 shown below and described in th...

Страница 51: ...rt Options 7 8 Stop bits 1 bit Sets the stop bits of the RS232 port Options 1 2 Parity NONE Sets the parity of the RS232 port Options none odd even Time Out in minutes 10 If no input is received from...

Страница 52: ...ports A computer attached to the network called a Network Management Station NMS can be used to access this information Access rights to the on board agent are controlled by community strings To comm...

Страница 53: ...fails The default setting is ENABLED SNMP Communities Provides access to the SNMP Communities screen to assign SNMP access based on specified strings For details refer to Section 6 4 1 IP Trap Manage...

Страница 54: ...Up to 5 community names may be entered Figure 6 8 SNMP Communities Screen Parameter Description Community Name A community entry authorized for management access Maximum string length 20 characters A...

Страница 55: ...on failure messages or other trap messages from the switch Up to 5 trap managers may be entered Figure 6 9 IP Trap Managers Screen Parameter Description IP Address IP address of the trap manager Commu...

Страница 56: ...in a safe place If for some reason your password is lost or you cannot gain access to the System Configuration Program contact Enterasys Networks for assistance The parameters shown on this screen are...

Страница 57: ...and reboot the module This changes the startup paramenter to ENABLED and forces the diagnostics to run when the module is rebooted For information on the location of the switch and how to set it refer...

Страница 58: ...of the network connection After downloading the new image the agent will automatically restart itself The download and upload configuration capability enables user configured settings to be copied fr...

Страница 59: ...re Upgrade Download Filename Download Mode A community specified for trap management access The binary file to download to the agent module Downloads to permanent flash ROM Download Server IP 0 0 0 0...

Страница 60: ...e Name fields respectively DOWNLOAD IMAGE Enables the download of an image from a TFTP server UPLOAD CONFIG Used to upload a configuration file from the switch module to a TFTP server DOWNLOAD CONFIG...

Страница 61: ...ns Screen Navigation Path Password Main Menu Device Control Menu 7 1 CONFIGURING THE SWITCH The Device Control Menu screen Figure 7 1 is used to control a broad range of functions including port confi...

Страница 62: ...e configuration for the switch its ports and modules For details refer to Section 7 5 Mirror Port Configuration Sets the source and target ports for mirroring For details refer to Section 7 6 SmartTru...

Страница 63: ...VLAN Base Information Displays basic VLAN information such as VLAN version number and maximum VLANs supported For details refer to Section 7 11 and Section 7 12 802 1Q VLAN Current Table Information...

Страница 64: ...all ports Enable Disable Port Type Admin Flow Control Speed and Duplex 1 10 100TX ENABLED ENABLED AUTO 2 10 100TX ENABLED ENABLED AUTO 3 10 100TX ENABLED ENABLED AUTO 4 10 100TX ENABLED ENABLED AUTO 5...

Страница 65: ...en resolved You may also disable a port for security reasons Flow Control DI SABLED Used to enable or disable flow control Flow control can eliminate frame loss by blocking traffic from end stations o...

Страница 66: ...iguration menu The parameters shown in the following figure and table are for the RJ45 ports Figure 7 3 Port Information Screen Port Information Port 1 12 Port Type Operational Link FlowControl Speed...

Страница 67: ...Link Indicates if the port has a valid connection to an external device Flow Control InUse Shows the flow control type in use Flow control can eliminate frame loss by blocking traffic from end statio...

Страница 68: ...etwork to ensure that only one route exists between any two stations on the network The Spanning Tree Configuration Selection Menu screen Figure 7 4 provides a menu selection to gain access to the STA...

Страница 69: ...ter to participate in an STA compliant network Priority 32768 Device priority is used in selecting the root device root port and designated port The device with the highest priority becomes the STA ro...

Страница 70: ...ted port for the attached LAN If it is a root port a new root port is selected from among the device ports attached to the network The minimum value is the higher of 6 or 2 x Hello Time 1 The maximum...

Страница 71: ...h the highest priority i e lowest value will be configured as an active link in the spanning tree Where more than one port is assigned the highest priority the port with lowest numeric identifier will...

Страница 72: ...and higher values assigned to ports with slower media Path cost takes precedence over port priority The default and recommended range is Ethernet 100 50 600 Fast Ethernet 19 10 60 Gigabit Ethernet 4...

Страница 73: ...ion Menu screen Figure 7 7 enables you to select one of two screens to display a summary of the STA information for the overall bridge or for a specific port To make changes to the STA bridge or STA p...

Страница 74: ...the highest priority becomes the STA root device However if all devices have the same priority the device with the lowest MAC address will then become the root device Hello Time in seconds The time in...

Страница 75: ...the spanning tree that this switch has accepted as the root device Root Cost The path cost from the root port on this switch to the root device Root Port The number of the port on this switch that is...

Страница 76: ...formation Port 1 12 Port Status Forward Designated Designated Designated Transitions Cost Bridge Port 1 FORWARDING 9 1 32768 00001D64A189 128 22 2 FORWARDING 1 101 32768 0000E8000500 128 2 3 FORWARDIN...

Страница 77: ...on Port address table is cleared and the port begins learning addresses Forwarding The port forwards packets and continues learning addresses The rules defining port status are A port on a network seg...

Страница 78: ...rtual VLANs If the target port is operating at a lower speed the source port will be forced to drop its operating speed to match that of the target port Use the Mirror Port Configuration screen Figure...

Страница 79: ...s at both ends of a trunk must be configured in an identical manner including speed duplex mode and VLAN assignments The communication mode must be configured identically at both ends of the trunk Non...

Страница 80: ...th the SmartTrunk Group SmartTrunk Status Used to enable or disable the trunk group SmartTrunk Group ID Used to select from 1 to 6 trunks This is the group ID of the SmartTrunk group Identifies the ch...

Страница 81: ...ched hosts who want to receive a specific multicast service The switch looks up the IP Multicast Group used for this service and adds any port that received a similar request to that group It then pro...

Страница 82: ...oup Use the IGMP Configuration screen Figure 7 12 to configure multicast filtering Figure 7 12 IGMP Configuration Screen NOTE The default values are shown in Figure 7 12 Parameter Description IGMP Sta...

Страница 83: ...that must elapse before the switch removes the port from an IGMP group This timer is started after the number of queries are missed as defined in the IGMP Query Count IGMP Report Delay Minutes The nu...

Страница 84: ...g Allows you to override the default PVID setting Port VLAN ID used in frame tags and its egress status VLAN Tagged or Untagged on each port For details refer to Section 7 15 Local VLAN Capable This s...

Страница 85: ...the following sections Also refer to Appendix C for information on Class of Service Figure 7 14 802 1P Configuration Menu Screen 7 10 1 Port Priority Configuration The default priority for all ingress...

Страница 86: ...iority queue 1 as shown in Figure 7 16 Parameter Description Port Numeric identifier for switch port Default Ingress User Priority Default priority can be set to any value from 0 7 where 0 3 specifies...

Страница 87: ...cast domains confining broadcast traffic to the originating group This also provides a more secure and cleaner network environment For more information on how to use VLANs refer to Appendix B The VLAN...

Страница 88: ...ter Description VLAN Version Number The VLAN version used by this switch as specified in the IEEE 802 1Q standard MAX VLAN ID Maximum VLAN ID recognized by this switch MAX Supported VLANs Maximum numb...

Страница 89: ...ure 7 18 Figure 7 18 802 1Q VLAN Current Table Information Screen NOTE Under the screen field heading of Egress Ports Forbidden Egress Ports or Tagged Ports each number 1 or 0 represents a port For ex...

Страница 90: ...Current Egress Ports Shows the ports which have been added to the displayed VLAN group where 1 indicates that a port is a member and 0 that it is not Current Untagged Ports If a port has been added to...

Страница 91: ...rts Sets one or more port entries in this field to 1 to add or 0 to remove it from the VLAN displayed on the screen Forbidden Egress Ports Sets one or more port entries in this field to 1 to prevent f...

Страница 92: ...n Show Displays settings for the specified VLAN More Displays consecutively numbered VLANs New Sets up the screen for configuring a new VLAN Parameter Description 802 1Q VLAN Port Configuration Port 1...

Страница 93: ...table Frame Type This switch accepts All frame types including VLAN tagged or VLAN untagged frames Note that all VLAN untagged frames received on this port are assigned to the PVID for this port Ingre...

Страница 94: ...MAC address received by the port to prevent other users MAC Addresses from using that port When a port is locked broadcast and multicast packets are processed over the link as well as the locked MAC...

Страница 95: ...o Section 10 15 2 Invalid Removes the corresponding entry DeleteOnTimeOut This entry is currently in use and will remain so until it is aged out Refer to Aging Time in Section 8 4 Other This entry is...

Страница 96: ......

Страница 97: ...work Monitor Menu 8 1 MONITORING THE SWITCH The Network Monitor Menu screen Figure 8 1 provides access to port statistics RMON statistics IP multicast addresses and the static unicast address table Ea...

Страница 98: ...Parameter Description Port Statistics Displays statistics on network traffic passing through the selected port RMON Statistics Displays detailed statistical information for the selected port such as...

Страница 99: ...he PLS sublayer Deferred Transmissions A count of frames for which the first transmission attempt on a particular interface is delayed because the medium was busy Late Collisions The number of times t...

Страница 100: ...ast system reboot Figure 8 3 RMON Statistics Screen Parameter Description Drop Events The total number of events in which packets were dropped due to lack of resources Received Bytes Total number of b...

Страница 101: ...less than 64 octets long excluding framing bits but including FCS octets and were otherwise well formed Oversize Frames The total number of frames received that were longer than 1518 octets excluding...

Страница 102: ...clusive excluding framing bits but including FCS octets 128 255 Byte Frames The total number of packets including bad packets received and transmitted that were between 128 and 255 octets in length in...

Страница 103: ...le Status Indicates address status as D Dynamically learned or P Fixed permanently by SNMP network management software Aging Time 300 Dynamic Counts 239 Static Counts 0 MAC VID Port Status MAC VID Por...

Страница 104: ...sses and the corresponding VLAN ID Figure 8 5 IP Multicast Registration Table Screen Show Displays the address table based on specified VLAN ID and sorted by primary key MAC or VID More Scrolls throug...

Страница 105: ...roup Multicast IP IP address for specific multicast services Multicast Group Port Lists The switch ports registered for the indicated multicast service Learned by Indicates if the ports were learned d...

Страница 106: ......

Страница 107: ...assword Main Menu System Restart 9 1 RESETTING THE SYSTEM Select the System Restart Menu item in the Main Menu screen to reset the management agent The reset screen includes options shown in Figure 9...

Страница 108: ...the current session Refer to Section 4 1 for information about the Main Menu screen Parameter Description POST Runs the Power On Self Test Reload Factory Defaults Reloads the factory defaults Keep IP...

Страница 109: ...authorized access to console menus Section 10 2 Assigning an IP address for the switch if you plan to manage the switch using SNMP or if you use Telnet to access the switch Section 10 3 Checking netwo...

Страница 110: ...er a password proceed as follows 1 Select Management Setup Menu from the Main Menu and press ENTER 2 Select Console Login Configuration and press ENTER 3 For the ADMIN user type enter a password conta...

Страница 111: ...ble or port is faulty the Link for the port reads DOWN 4 If you see a DOWN status for a connected port plug the cable into another port on the switch or try another cable 10 5 CONNECTING VIA TELNET Yo...

Страница 112: ...ect Network Monitor Menu from the Main Menu 2 Select Port Statistics Then select the stack unit and port to display the main statistical counts for the port 3 Select RMON Statistics Then select the st...

Страница 113: ...akes approximately three minutes and requires minimal configuration Via TFTP download This procedure uses a TFTP server connected to the network and downloads the software using the TFTP protocol A TF...

Страница 114: ...gon screen will then display 10 9 2 Downloading via TFTP To perform a TFTP download you must first configure the switch This consists of programming the switch with an IP address if this has not alrea...

Страница 115: ...ated thereby maintaining the connection Refer to Appendix A for further information on using the Spanning Tree Protocol in a network To configure Spanning Tree Parameters do the following 1 Select the...

Страница 116: ...stion Class of Service settings ensure that traffic which has been assigned high priority is forwarded through the switch ahead of normal priority traffic For further information refer to Appendix C T...

Страница 117: ...ion duplex mode port speed and flow control The 100Base FX fiber ports always operate in full duplex mode and 100 Mbps speed Therefore these two parameters along with auto negotiation are not configur...

Страница 118: ...learned and removed by the switch based on a time period defined using the Aging Time option Static MAC addresses which are entered manually stored in nonvolatile memory and automatically placed in th...

Страница 119: ...are cleared from the Unicast Table If a MAC address was not entered then the first address received on the port is locked in and is the only source address recognized on that port If a MAC address wa...

Страница 120: ...ncing the load across each port in the trunk the additional ports provide redundancy by taking over the load if another port in the trunk should fail To configure the port trunks do the following 1 Se...

Страница 121: ...etwork cables Otherwise a loop may be created To disable a single link within a port trunk you should first remove the network cable and then disable both ends of the link via the configuration menu T...

Страница 122: ......

Страница 123: ...re used to access the information maintained by the SNMP agents across a network is referred to as the SNMP Manager and typically runs on a workstation The SNMP manager software uses a MIB specificati...

Страница 124: ...of TCP IP based Internets MIB II RFC 1493 Definitions of Managed Objects for Bridges RFC 1573 Evolution of the Interfaces Group of MIB II RFC 1643 Definitions of Managed Objects for the Ethernet like...

Страница 125: ...IB II This MIB deals with the operation of the system as an 802 1D compliant bridge Areas of functionality supported by this group include Spanning Tree and forwarding table information and configurat...

Страница 126: ...Enterasys private MIB This MIB definition is specified separately from MIB II Areas covered in this MIB include various system switch and port level information 11 4 COMPILING MIB EXTENSIONS ENTERASY...

Страница 127: ...s Create a single spanning tree from any arrangement of switching or bridging elements Compensate automatically for the failure removal or addition of any device in an active data path Achieve port ch...

Страница 128: ...Switches A B and C are connected together in a redundant topology more than one path between two points If the connection between A and B goes down the link between A and C becomes active thereby esta...

Страница 129: ...ne Bridge Identifier Identifier for each bridge This parameter consists of two parts a 16 bit bridge priority and a 48 bit network adapter address Ports are numbered in absolute numbers starting from...

Страница 130: ...plication software and other LAN segments ignore the packet Bridges communicate between each other in order to determine the Root Bridge A 3 3 Selecting a Root Bridge and Designated Bridges During com...

Страница 131: ...using 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 b...

Страница 132: ......

Страница 133: ...tself or by a network device such as a switch In addition to VLAN information the relative priority of the frame in the network can be specified by the tag For more information refer to Appendix D VLA...

Страница 134: ...other end of the link also supports VLANs Then assign the port at the other end of the link to the same VLANs However if you want a port on this switch to participate in one or more VLANs but the dev...

Страница 135: ...flecting this port s default VID The default PVID is VLAN 1 but this can be changed as described in Section 7 15 Figure B 1 Example of Multi Switch VLAN Configuration B 4 FORWARDING TRAFFIC WITH UNKNO...

Страница 136: ......

Страница 137: ...the high priority queue are transmitted first when that queue empties traffic on the normal priority queue is transmitted When priority queuing is being used each frame that passes through the switch...

Страница 138: ...y Figure C 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 F...

Страница 139: ...ith forwarding multicast traffic from the local router switch to group members on a directly attached subnetwork or LAN segment This switch supports IP Multicast Filtering by passively snooping on the...

Страница 140: ......

Страница 141: ...ss of Service 10 8 configuring VLANs 10 7 downloading of software upgrades 10 5 making a Telnet connection 10 3 setting SNMP management access 10 3 setting the Gateway IP 10 12 setting the passwords p...

Страница 142: ...1 2 MIBs introduction to Compiling MIB Extensions Enterasys Website 11 4 Enterasys Proprietary MIB Extensions 11 4 RFC 1213 MIB II 11 2 RFC 1757 RMON MIB 11 3 mirror port configuration 10 4 Moving the...

Страница 143: ...l 2 2 SmartTrunks configuration of 10 12 SNMP configuring access 10 3 management xiv 11 1 MIB extensions 11 4 operations 11 1 traps 11 1 software upgrades downloading of 10 5 downloading via serial po...

Страница 144: ......

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