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Chapter 7. Troubleshooting and Obtaining Service

Diagnosing Problems

This chapter contains procedures that help you to troubleshoot problems with your
switch and its connections to other devices.

Be sure you read “Appendix A. Safety Information” on page 93 before proceeding.

Obtaining Software

To obtain support information, including technical tips, current product information,
and code updates and fixes for the switch, visit the IBM Networking Tech Support
page at:

http://www.ibm.com/networking/support

You can also subscribe to receive e-mail notifications about code updates, tips, and
FAQs for your switch.

Troubleshooting in a Network

The switch terminal interface, Web interface, and SNMP management agent give
you access to important statistics and other information about the network. To
obtain these statistics, see “Chapter 4. Using the Terminal Interface” on page 31
and “Chapter 5. Using the Web Interface” on page 81 and select the appropriate
panels.

Start of Troubleshooting Process

If one or more devices (such as workstations) connected to a switch are unable to
communicate with other devices in the network, use the following steps to start the
troubleshooting process:

1. Locate the switch to which the device is connected. Use the network sketch, the

label on the cable connected to the device, or other network records to help you
locate the switch.

2. Have available any documentation associated with the feature modules that are

installed on the switch.

3. If you have an EIA 232 console session set up, (see “Chapter 2. Accessing the

switch” on page 19), you can use it to determine if diagnostics have been
completed correctly.

4. Observe the LEDs on the front panel of the switch. The location of these LEDs

is shown in Figure 3 on page 10 with explanations of the LED status conditions
in the accompanying table. Ignore the feature module LEDs at this time. Review
this information before proceeding with the troubleshooting process.

5. If the LED status are not OK, locate the symptom that best describes the

communication problem and the LED status you observed in Table 14 on
page 90. Then go the section that contains the recommended actions for
resolving the problem and follow that procedure.

© Copyright IBM Corp. 1999

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Содержание 8275-416

Страница 1: ...8275 Model 416 High Performance Ethernet Workgroup Switch User s Guide Release 1 2 GC30 4026 02 IBM...

Страница 2: ......

Страница 3: ...8275 Model 416 High Performance Ethernet Workgroup Switch User s Guide Release 1 2 GC30 4026 02 IBM...

Страница 4: ...given below A form for readers comments appears at the back of this publication If the form has been removed address your comments to Department CGF Design Information Development IBM Corporation PO...

Страница 5: ...ments 7 Front panel 8 Switch LED status 10 Single digit display 11 Base ports LEDs 12 Feature module LEDs 13 Physical characteristics 17 Chapter 2 Accessing the switch 19 Types of Connectivity 19 Out...

Страница 6: ...router table menu 66 Self Learning IP host address menu 67 User account management 70 Defining user accounts 70 Managing login sessions 71 System utilities 72 Saving applied changes 72 Logging out 72...

Страница 7: ...iwanese Class A Warning Statement 106 Class 1 Laser Statement 106 Class 1 LED Statement 106 Trademarks 107 Appendix C Cable Pinout Diagrams 109 Straight Through 10BASE T 100BASE TX Cables 109 Straight...

Страница 8: ...Readers Comments We d Like to Hear from You 137 vi 8275 416 User s Guide...

Страница 9: ...7 21 SNMP community configuration 39 22 SNMP trap receiver configuration 41 23 Trap flags configuration 42 24 Trap log 43 25 Trap log status 44 26 Telnet configuration 44 27 Ping 45 28 ARP cache 46 29...

Страница 10: ...able RJ 45 to IBM Data Connector 109 69 Crossover UTP Cable RJ 45 to RJ 45 T568A 110 70 Crossover UTP Cable RJ 45 to RJ 45 T568B 110 71 Crossover STP Cable RJ 45 to IBM Data Connector Crossover 110 72...

Страница 11: ...of LEDs for 4 port 100BASE FX feature module 15 8 Status of LEDs for 2 port 1000BASE SX feature module 16 9 Summary of physical characteristics for the switch 17 10 Connection methods and available us...

Страница 12: ...x 8275 416 User s Guide...

Страница 13: ...ing SNMP to manage the switch v Chapter 5 Using the Web Interface on page 81 introduces the Web interface v Chapter 7 Troubleshooting and Obtaining Service on page 89 gives suggestions for solving pro...

Страница 14: ...ubscribe to receive e mail notifications about code updates tips and FAQs for your switch Obtaining service If you need assistance in troubleshooting or you need service for your 8275 416 call IBM at...

Страница 15: ...abit Feature Module v The addition of these functions Trunking Self learning IP Port based and fast spanning tree Enable disable Web mode configuration from SNMP Enable disable broadcast storm suppres...

Страница 16: ...xiv 8275 416 User s Guide...

Страница 17: ...abits per second Ethernet switching v Desktop and segment switching infrastructure v Affordable migration to higher performance networks As a network administrator you have a choice of three easy to u...

Страница 18: ...Forwarding database The switch port MAC addresses are stored in the forwarding database An address learned by the switch is removed from the forwarding database after a period of time if no frames hav...

Страница 19: ...P address is a known host If both tests pass the packet is automatically re addressed to the destination IP host device and is sent out the appropriate switch port A Router Table and Host Table are us...

Страница 20: ...pported for the 10 100BASE TX and 100BASE FX ports All members of the trunk must support Sun Trunking 1 0 For information about configuring trunks see Trunk management menu on page 58 Up to 8 trunks c...

Страница 21: ...the Ethernet network only through the ports which are members of the Default VLAN VLAN 1 You have a choice of these easy to use management methods v A VT100 terminal interface allows you to fully mana...

Страница 22: ...affic through the use of spanning tree protocol STP which provides a level of fault tolerance and ensures that Redundant paths are disabled when the main paths are operational Redundant paths are enab...

Страница 23: ...de fiber MMF cabling 550 m 1804 ft at full duplex 10 100BASE TX 10BASE T connections are MDX ports and operate correctly with standard Category 3 4 or 5 100 ohm UTP or STP cable and connecting hardwar...

Страница 24: ...232 serial interface sometimes referred to as the out of band management port Use a null modem serial cable when connecting to a workstation Appendix C Cable Pinout Diagrams on page 109 Use a VT100 t...

Страница 25: ...v 4 Port 100BASE FX Ethernet Feature Module P N 31L4054 v 2 Port 1000BASE SX Ethernet Feature Module P N 30L6663 Chapter 1 Introduction 9...

Страница 26: ...ailure The switch is not operational On On Off The switch is operational On Blinking Off Configuration file or Operational Code file transfer is in process Do not power off or reset the switch On Off...

Страница 27: ...d RAM problem Replace the switch 3 Detected an unsupported feature module Remove the feature module and update the operational code or the feature module is not fully seated in its connector 4 PIF fau...

Страница 28: ...us of LEDs for 16 base 10 100BASE TX ports LED Color State Explanation Right Ethernet Port LED Green ON Indicates a 100 Mbps port OFF Indicates a 10 Mbps port Left Ethernet Port LED Green ON The link...

Страница 29: ...f LEDs for 8 port 10 100BASE TX feature module LED Color State Explanation OK Green ON There is power to feature module OFF There is no power to feature module no power to the switch or the module has...

Страница 30: ...no power to the feature module no power to the switch or the module has failed Fault Yellow ON There is a module fault OFF There is no module fault Port LED Green ON Link is up OFF Link is down Blink...

Страница 31: ...o power to the feature module no power to the switch or the module has failed Fault Yellow ON There is a module fault OFF There is no module fault Port LED Green ON Link is up OFF Link is down Blinkin...

Страница 32: ...ule OFF There is no power to the feature module no power to the switch or the module has failed Fault Yellow ON There is a module fault OFF There is no module fault Port LED Green ON Link is up OFF Li...

Страница 33: ...0 mm 17 16 in Depth 355 6 mm 14 in Weight estimate 6 0 kg 13 lb Minimum Service Clearance Front 15 3 mm 6 in for cooling cables and to view LEDs Sides 50 mm 2 in for cooling Rear 15 3 mm 6 in for coo...

Страница 34: ...18 8275 416 User s Guide...

Страница 35: ...ng on your method of connection Table 10 Connection methods and available user interfaces Type of Connection Available User Interface Out of band Terminal interface via the EIA 232 port terminal direc...

Страница 36: ...e key definitions You may need to configure your terminal emulation application to enable the use of these keys Remotely attached terminal To establish out of band connectivity using a remotely attach...

Страница 37: ...blanks no password g See Appendix D Interface Conventions for the Console on page 113 for a description of terminal interface key definitions You may need to configure your terminal emulation applicat...

Страница 38: ...d write and read only See Appendix D Interface Conventions for the Console on page 113 for a description of the terminal keys You may need to configure your terminal application to enable use of these...

Страница 39: ...interface The is no specific logout command to end a Web session The Web session will be automatically logged off after a period of inactivity The inactivity timeout value that is configured for the...

Страница 40: ...24 8275 416 User s Guide...

Страница 41: ...and the boot server name The switch supports reserved or static DHCP documented in RFC 1541 The DHCP or BootP server must be available through the Default VLAN VLAN 1 To configure the IP information r...

Страница 42: ...destination address is an individual address B 0 or a group address B 1 v A locally administered address must have bit 6 On B 1 and bit 7 Off B 0 MAC Address Type Specifies if the burned in MAC addres...

Страница 43: ...and it is accepted v Selecting APPLY causes the change on the current panel to be applied but not retained across a reset or power cycle v Selecting SAVE causes the change on the current panel to be...

Страница 44: ...gnored such as space Tab Esc Once a configuration change is made and is accepted the cursor is no longer on the field that was modified the change is not put into effect until you select APPLY Saving...

Страница 45: ...l data is displayed v Selecting an option from one of the items displayed when the pull down menu is selected All items in a pull down menu are correct Until you select APPLY or SAVE you can restore a...

Страница 46: ...e Configuration changes made using SNMP Set commands are not automatically retained across a reset or power cycle To get these changes retained across a reset or power cycle issue an SNMP Set to the s...

Страница 47: ...ure 13 shows the Login panel you need an approved user name and password to login User Name Can be up to 8 alphanumeric characters in length The value is not case sensitive The default is admin for a...

Страница 48: ...Allows selection of the utilities available with the switch System information The switch manages information about its installed hardware and software System information contains read only and read w...

Страница 49: ...ly inventory information available for your switch System description Figure 17 on page 34 shows the system information for your switch Figure 15 System information menu Figure 16 Inventory informatio...

Страница 50: ...ates the physical location of the switch Specify up to 31 alphanumeric characters The default is blank System Contact Identifies the person responsible for your network for example you network adminis...

Страница 51: ...e switch To configure the IP information select Management Menu from the Main Menu then select Network Connectivity Configuration Menu from the Management Menu The Network Connectivity Configuration M...

Страница 52: ...onfiguration protocol currently being used Possible values are v BootP Static DHCP the switch periodically sends requests to a BootP or DHCP server until a response is received v None the switch will...

Страница 53: ...e Default VLAN ID 1 When BootP or DHCP is enabled the switch periodically sends out requests until a response is received from either a DHCP or BootP server The IP information in the BootP or DHCP res...

Страница 54: ...BootP server is not saved unless you select SAVE Next configure the Network Configuration Protocol Configuring the switch for DHCP or BootP If you are using DHCP or BootP you must configure the approp...

Страница 55: ...r community names are blank Client IP Address This attribute is an IP address or portion thereof from which this device will accept SNMP packets with the associated community The requesting entity s I...

Страница 56: ...us of Disable Inactive means that the community is not active no SNMP requests using this community will be accepted In this case the SNMP manager associated with this community cannot manage the swit...

Страница 57: ...s Configuring trap conditions You can optionally configure which traps that the switch should generate You do this by selecting a status for the trap condition that is if it is either enabled or disab...

Страница 58: ...ot traps and topology change notification traps See Appendix E Introduction to Virtual LANs VLANs on page 117 for more information Broadcast Storm Flag This flag enables or disables the broadcast stor...

Страница 59: ...Up v Link Down v Multiple Users v New Spanning Tree Root v Spanning Tree Topology Change v Broadcast storm start end Checking trap log status To check how many traps have been generated select Trap M...

Страница 60: ...he last entry Configuring Telnet You can manage the switch remotely using a Telnet connection Chapter 2 Accessing the switch on page 19 describes setting up a Telnet connection To configure for Telnet...

Страница 61: ...ns that no new Telnet sessions are to be established Any already established session remains active until the session is ended or an abnormal network error ends it The default value is Yes Ping The sw...

Страница 62: ...t every second Command Send is the only command To stop sending pings press any key that moves the cursor from the current field ARP cache Select Management Menu from the Main Menu Then select ARP Cac...

Страница 63: ...set a time after which the address will timeout and to enable disable broadcast storm recovery and 802 3x flow control To set these values select Device Configuration Menu from the Main Menu and then...

Страница 64: ...sable This value applies to only full duplex mode ports Self Learning IP Mode Indicates that the self learning IP mode is enabled or disabled Disable is the default Note For the Self Learning IP funct...

Страница 65: ...8 ports Type This is a read only field It indicates whether a port currently belongs to a trunk or is enabled for monitoring Type values are v Trnk indicates that this port belongs to a trunk v Mntr i...

Страница 66: ...l traffic with an external network analyzer The selected probe port can monitor mirror traffic from one port The selected probe port also receives and transmits network traffic tagged frames which all...

Страница 67: ...ring Used to Enable or Disable the port monitoring function The default is Disable Monitoring Port This is the slot port that the monitored data is sent to This is the slot port that a Network Analyze...

Страница 68: ...ning Tree Switch Configuration Status Menu or Spanning Tree Port Configuration Status Menu from the Device Configuration Menu Figure 33 The following section lists and describes the STP configuration...

Страница 69: ...the priority of port on the switch The range is 0 to 255 The default is 128 Port Path Cost This output is automatically calculated The cost represents the shortest distance from any switch to the roo...

Страница 70: ...VLAN Summary and Configuration Menu to begin configuring your VLANs Figure 36 Note that there are four panels on which you can define a total of 32 VLANs The parameters for this panel are Unit ID Sel...

Страница 71: ...or Modifying a VLAN If you want to add a VLAN move the cursor to the ADD VLAN command at the bottom of the panel and press Enter To modify an existing VLAN move the cursor to the line containing the...

Страница 72: ...mic Indicates that this port is to be dynamically registered in this VLAN by GVRP v Monitor Indicates that this is a monitoring port v blank no text Indicates that this port is excluded from being a m...

Страница 73: ...seconds The default is 60 centiseconds 0 6 seconds 802 1Q port configuration See Figure 39 for parameters used to configure your 802 1Q ports Port Indicates by a slot ID and port number which port is...

Страница 74: ...ned bandwidth of all links Link aggregation also provides automatic point to point redundancy between two devices switch to switch Each link in the trunk must be running at the same link speed and in...

Страница 75: ...runk ports will be disabled during trunk transitions This is done to ensure that frames are not misordered when flows are re assigned to new ports N A indicates the trunk is not configured The range o...

Страница 76: ...ion Menu It specifies the spanning tree protocol STP mode for the port values are v 802 1D the default v Fast indicates fast STP mode for this port v Off indicates STP is turned off for this port Link...

Страница 77: ...resh every few seconds All counters may not update every few seconds Even though the refresh rate is every few seconds some counters will not change For example the Self Learning Statistics counters u...

Страница 78: ...t statistics can be viewed on four consecutive panels Figure 45 Figure 46 on page 63 Figure 47 on page 63 and Figure 48 on page 64 To view the next panel move the cursor to NEXT PAGE at the bottom of...

Страница 79: ...Figure 46 Port detailed statistics Page 2 of 4 Figure 47 Port detailed statistics Page 3 of 4 Chapter 4 Using the Terminal Interface 63...

Страница 80: ...switch statistics that are collected Switch detailed statistics To view detailed switch statistics select Switch Detailed Statistics Menu Page 1 of 2 from the Statistics Menu See Figure 50 on page 65...

Страница 81: ...itched by the self learning IP function since it was enabled The count is all inclusive for the switch regardless of the routers or hosts involved The value starts at 0 whenever the function is enable...

Страница 82: ...d and age out reflecting the dynamic nature of host traffic as it traverses the switch Forwarding database information To view forwarding database information select Forwarding Database Menu from the...

Страница 83: ...yed in the order of increasing IP addresses 2 The table can contain up to 32 entries with up to 11 entries per page up to 3 pages 3 Only the number of pages that contain data are displayed Self Learni...

Страница 84: ...he router since the host was last learned by the self learning IP function Router Gateway IP Address The IP address of the router to which this host communicates when sending IP traffic to a different...

Страница 85: ...tched count is shown whenever the host information is displayed or manually refreshed Changes in the count value are also reflected in the Packets Switched value on the Switch Detailed Statistics Menu...

Страница 86: ...ess mode Password The password can be up to eight alphanumeric characters and is not case sensitive A blank password indicates no password The default value is blank Confirm Password The confirm passw...

Страница 87: ...lowed to access the switch Delete means the user will be removed from the list upon an apply or save The status of the read write user name is always Enabled Managing login sessions On the User Accoun...

Страница 88: ...To permanently save configuration changes either select F4 to save or go to the System Utilities Menu and select Save Applied Changes as shown in Figure 57 Logging out When you have finished using th...

Страница 89: ...he switch is retained after a code update or a reset The switch displays result messages to indicate the status of a file transfer Table 11 and Table 12 on page 74 show the messages along with explana...

Страница 90: ...ave to be downloaded via the bootcode utility function For configuration retry the download If the file transfer still fails contact your IBM service representative File transfer failed A general erro...

Страница 91: ...Check to make sure these fields match the file location on the TFTP server File transfer completed successfully The switch successfully sent the file to the TFTP server Downloading a file to the swit...

Страница 92: ...blank File path can be appended to the file name if the string is less than 17 characters Otherwise the File Path field will need to be used and the File Name will be appended to the File Path as is...

Страница 93: ...you want the reset to proceed A successful reset is indicated by the LEDs on the switch After selecting Reset Menu from the System Utilities Menu you are given the choice of the resets you can request...

Страница 94: ...et The switch is automatically reset when this command is processed You are prompted to confirm that you want the reset to proceed Reset the configuration data to the factory defaults by indicating th...

Страница 95: ...til the switch is reset The switch is automatically reset when this command is processed You are prompted to confirm that you want the reset to proceed Reset the passwords by indicating the particular...

Страница 96: ...80 8275 416 User s Guide...

Страница 97: ...ter 4 Using the Terminal Interface on page 31 navigating the Web interface will not be difficult This chapter is a brief introduction to the Web interface Configuring for Web Access To have Web access...

Страница 98: ...and the System Description Menu is displayed in Frame 3 3 Make your selection by clicking on the appropriate item in the navigation tree in Frame 2 Note There is an inactivity timeout associated with...

Страница 99: ...e effect Refresh The Refresh button that appears next to the Apply button in Web interface panels refreshes the data on the panel Restart Refreshes the list and displays the data starting at the begin...

Страница 100: ...84 8275 416 User s Guide...

Страница 101: ...Cs that are supported because the SNMP specification is not described in this chapter MIBs supported by the switch are shown in Table 13 Table 13 MIBs Supported by the Switch MIBs Supported MIB II RFC...

Страница 102: ...nMode in the 8275 416 private MIB dot1dSr Group Not supported dot1dStatic Group Not supported dot1dTP Not supported dot1dTpLearnedEntryDiscards Not supported IEEE 802 3 Ethernet MIB RFC 1643 RFC 1643...

Страница 103: ...he interface index ifIndex is sometimes used to identify the specific interface being addressed On the switch each Ethernet port is an interface and so is the IP agent being used to manage it which is...

Страница 104: ...88 8275 416 User s Guide...

Страница 105: ...ch as workstations connected to a switch are unable to communicate with other devices in the network use the following steps to start the troubleshooting process 1 Locate the switch to which the devic...

Страница 106: ...ed cables between a port and the device at the other end Procedure A Use this procedure if all LEDs are Off 1 Verify that the ac power outlet to which the switch power supply is connected is active If...

Страница 107: ...s a member of the VLAN over which traffic from this device would transverse this is usually VLAN 1 See Appendix E Introduction to Virtual LANs VLANs on page 117 for more details d Try pinging the atta...

Страница 108: ...erational code You can also examine the Port Configuration Menu accessible from the Device Configuration Menu Any ports with an x in the STP St column have been diagnostically disabled To isolate this...

Страница 109: ...t beschreven hoe u electrische apparatuur op een veilige manier moet bekabelen en aansluiten Danger Avant de proc der l installation de ce produit lisez d abord les consignes de s curit dans la brochu...

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Страница 111: ...fety Information Read This First SD21 0030 k nyvecsk ben le rt biztons gi inform ci kat Ez a k nyv le rja milyen biztons gi int zked seket kell megtenni az elektromos berendez s huzaloz sakor illetve...

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Страница 113: ...scribe los procedimientos de seguridad para cablear y enchufar equipos el ctricos Varning livsfara Innan du b rjar installera den h r produkten b r du l sa s kerhetsinformationen i dokumentet Varning...

Страница 114: ...i produktet medmindre netledningen er trukket ud VAARA Virtal hde on varustettu kaksinapaisella sulakkeella jossa on my s maanapa Tuotteessa voi olla j nnite jos verkkojohtoa ei ole irrotettu ATTENTIO...

Страница 115: ...que o cabo de alimenta o esteja desligado o produto pode estar sob tens o Precauci n Hay una fusi n de doble polo neutro en la fuente de alimentaci n El producto podr a estar cargado el ctricamente a...

Страница 116: ...100 8275 416 User s Guide...

Страница 117: ...Appendix A Safety Information 101...

Страница 118: ...102 8275 416 User s Guide...

Страница 119: ...ato ku Tokyo 106 Japan The following paragraph does not apply to the United Kingdom or any other country where such provisions are inconsistent with local law INTERNATIONAL BUSINESS MACHINES CORPORATI...

Страница 120: ...ctors or by unauthorized changes or modifications to this equipment Unauthorized changes or modifications could void the user s authority to operate the equipment This device complies with Part 15 of...

Страница 121: ...eiber verlangt werden angemessene Ma nahmen durchzuf hren und daf r aufzukommen EN 50082 1 Hinweis Wird dieses Ger t in einer industriellen Umgebung betrieben wie in EN 50082 2 festgelegt dann kann es...

Страница 122: ...Statement Class 1 Laser Product Laser Klasse 1 Laser Klass 1 Luokan 1 Laserlaite Appareil Laser de Classe 1 To IEC 825 1 1993 Class 1 LED Statement Class 1 LED Product LED Klasse 1 LED Klass 1 Luokan...

Страница 123: ...t Windows Windows NT and the Windows logo are trademarks of Microsoft Corporation in the United States other countries or both Java and all Java based trademarks and logos are trademarks of Sun Micros...

Страница 124: ...108 8275 416 User s Guide...

Страница 125: ...ght Through 10BASE T 100BASE TX Cables Straight Through 10BASE T 100BASE TX Cables for STP Figure 66 Straight Through UTP Cable RJ 45 to RJ 45 T568A Figure 67 Straight Through UTP Cable RJ 45 to RJ 45...

Страница 126: ...ossover 10BASE T 100BASE TX Cables for STP Figure 69 Crossover UTP Cable RJ 45 to RJ 45 T568A Figure 70 Crossover UTP Cable RJ 45 to RJ 45 T568B Figure 71 Crossover STP Cable RJ 45 to IBM Data Connect...

Страница 127: ...EIA 232 Port Figure 72 Pinout of the EIA 232 Port Appendix C Cable Pinout Diagrams 111...

Страница 128: ...itch End 9 Pin Female TXD RXD RTS CTS DSR GND DCD DTR RI 3 2 7 8 6 5 1 4 9 2 3 4 5 6 7 8 20 22 Figure 73 EIA 232 Null Modem Cable for Terminal with 25 Pin Connector Figure 74 EIA 232 Null Modem Cable...

Страница 129: ...ing the cursor keys No insert or overwrite modes can be performed in the field The text in the field is erased and replaced by the new text If you press the Esc key before you move off the field the c...

Страница 130: ...ssword are processed for login v On a non leaf menu option and press Enter the selected menu is displayed A non leaf menu is a panel that contains a list of menu names that can be selected v On the Un...

Страница 131: ...accepted Uppercase Words in the Menu Identifies commands READ ONLY When in the upper right corner of the panel indicates that the current user has read only access UNSAVED DATA When in the upper righ...

Страница 132: ...116 8275 416 User s Guide...

Страница 133: ...vement of devices on IP networks v It helps to control broadcast traffic v It provides extra security How VLANs ease change and movement With traditional IP networks network administrators spend much...

Страница 134: ...ith other devices that support the 802 1Q standard In addition the switch supports GVRP a protocol that automates the registration of VLANs across networks The switch supports up to 32 user configured...

Страница 135: ...later in this appendix GARP VLAN registration protocol GVRP The switch provides a feature that allows the automatic propagation of VLAN membership information across the network This feature is facili...

Страница 136: ...y never join a VLAN by receiving and propagating GVRP PDUs Configuration examples The following section will discuss some common network configuration scenarios and how the switch should be configured...

Страница 137: ...GVRP Likewise Station B registers its membership with VLAN 5 on Port 12 Note that this VLAN will be dynamic because the network administrator has not explicitly configured the VLAN on the switch Frame...

Страница 138: ...ed or untagged because Station B is capable of handling both Frames from Station A arrive at Port 1 and are tagged with a VLAN ID equal to the PVID of Port 1 VLAN 5 The frames are then switched to Por...

Страница 139: ...switch resources The 8275 416 always guarantees resources for all 32 ports in the Default VLAN VLAN 1 Up to 31 additional VLANs may be configured or registered with the switch with certain restriction...

Страница 140: ...addition of feature modules does not increase the number of non Default VLAN port instances that can be supported by either the base ports or the two feature modules together However the addition of...

Страница 141: ...7 APPLY command 113 ARP Cache 46 ARP Cache Menu 46 Authentication Failure trap condition 42 B base port numbers 49 baud rate 20 Baud rate default for 37 description of 37 value range 37 BootP 25 brack...

Страница 142: ...47 DHCP Dynamic Host Configuration Protocol 25 down arrow 113 downloading code 76 downloading configuration file 76 downloading files to the switch 73 Dynamic Host Configuration Protocol DHCP 25 E En...

Страница 143: ...nel user name 31 user password 31 login password 31 login sessions managing 71 LOGOUT command 113 Logout utility description of 72 use of 72 M MAC address type 26 MAC addresses 113 Main Menu Device Co...

Страница 144: ...ummary statistics 61 port switching number of ports 6 packet processing rates 6 port VLAN ID 57 PREV MENU command 113 PREV PAGE command 113 Priority Spanning Tree Protocol default for 52 53 descriptio...

Страница 145: ...Protocol STP 6 configuring for 52 defining Status 52 special keys Backspace 113 brackets angle 113 special keys continued brackets continued square 113 Cntl Tab 113 Delete 113 down arrow 113 End 113 E...

Страница 146: ...LY 113 CLEAR CTRS 113 HELP 113 LOGOUT 113 MAIN MENU 113 NEXT PAGE 113 PREV MENU 113 PREV PAGE 113 REFRESH 113 terminal interface continued commands continued SEND STOP 113 UNSAVED DATA 113 configuring...

Страница 147: ...lues 70 V virtual local area networks VLANs description of 2 VLAN resetting 58 VLAN configuration 53 VLAN current status 56 VLAN ID 55 VLAN index 54 VLAN management 53 VLAN name 55 VLAN participation...

Страница 148: ...132 8275 416 User s Guide...

Страница 149: ...ing up a frame includes FCS octets Client Any application that retrieves and displays data from probes or agents Collision The best estimate of the number of collisions on an Ethernet segment Communit...

Страница 150: ...ress Does not include broadcast packets Multicasts are similar to broadcasts but have a more limited scope for example they may be directed to all bridges on a ring Oversize Packet An Ethernet packet...

Страница 151: ...ng portion is used to represent host information Devices and routers use the mask to identify the subnet on which a probe resides System Descriptor A free form field on RMON devices used by vendors to...

Страница 152: ...136 8275 416 User s Guide...

Страница 153: ...his book is Very Satisfied Satisfied Neutral Dissatisfied Very Dissatisfied Accurate h h h h h Complete h h h h h Easy to find h h h h h Easy to understand h h h h h Well organized h h h h h Applicabl...

Страница 154: ...M Corporation P O Box 12195 Research Triangle Park NC U S A 27709 9990 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

Страница 155: ......

Страница 156: ...0 recovered post consumer fiber Web sites 8275 416 Documentation http www ibm com networking support docs nsf 8275docs 8275 416 Software Updates http www ibm com networking support downloads 8275 8275...

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