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34

C

HAPTER

 4: C

ONFIGURING

 

THE

 S

WITCH

Modifying VLANs

Use the Modify VLAN screen to change the VLAN to 
which a port belongs, and configure the port to com-
municate with all other VLANs, or a selected VLAN.

Figure 16   

Modify VLANs Screen

■

Port – Displays the port number

■

Mode – The mode option determines if the port 
can communicate with all VLANs, or only with a 
selected VLAN

■

Uplink – If you select this, the port is able to com-
municate with all VLANs on the Switch

■

Desktop - If you select this, the port can only com-
municate with other ports assigned to the VLAN 
selected in the VLAN ID drop-down list.

An uplink port is sometimes referred to as a tagged 
port. The two terms refer to the same feature.

■

VLAN ID – Enter the ID of the configured VLAN to 
which you want this port to belong

Defining VLAN Membership

Use the Membership screen to configure port mem-
bers for the selected VLAN.

Figure 17   

Membership Screen

■

VLAN ID – ID of the configured VLAN (1-4094, no 
leading zeroes)

■

Name – Name of the VLAN (1 to 32 characters)

■

Ports – Port identifier

Sample VLAN Configurations

To illustrate how you can segment network devices 
that are connected to the Switch, the following 
sample configurations are provided.

Содержание 3C16476BS-US - Baseline 2250 Plus Switch

Страница 1: ...http www 3com com Baseline Switch 2250 Plus 3C16476BS User Guide Part No DUA16476B SAA02 Published April 2005...

Страница 2: ...995 or FAR 52 227 14 June 1987 whichever is applicable You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in or delivered to you in...

Страница 3: ...g Units On Top of Each Other 15 Supplying Power to the Switch 16 Checking for Correct Operation 16 Connecting a Network Device 17 Using SFP Transceivers 18 Approved SFP Transceivers 18 Inserting an SF...

Страница 4: ...are 40 Configuring the Spanning Tree 41 802 1p Prioritization 41 5 TROUBLESHOOTING Resetting to Factory Defaults 43 Forgotten Password 43 Forgotten Static IP Address 44 Solving LED Issues 44 If the Pr...

Страница 5: ...ns Table 1 and Table 2 list conventions that are used throughout this guide Table 1 Notice Icons Icon Notice Type Description Information note Information that describes important features or instruct...

Страница 6: ...s are very important to us They will help make our documentation more useful to you Please e mail comments about this document to 3Com at pddtechpubs_comments 3com com Please include the following inf...

Страница 7: ...conjunction with two Small Form Factor Pluggable SFP transceiver slots on the front panel Use these SFP transceiver slots for easy flexible connection to fiber based Gigabit media While there are fou...

Страница 8: ...ity traffic is forwarded on a dif ferent queue from lower priority traffic and is given preference over that traffic This ensures that time sensitive traffic gets the highest level of service The 802...

Страница 9: ...data connectors network telephony systems or network telephones to these sockets Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets AVER...

Страница 10: ...rts with shared Small Form Factor Pluggable SFP trans ceiver slots If an SFP transceiver purchased sepa rately is installed in a slot and is active the associated RJ 45 port of the same number is disa...

Страница 11: ...ink established operating at 1000 Mbps Yellow Link established operating at 10 or 100 Mbps Flashing Green Packets are being received or transmit ted on the port at 1000 Mbps Flashing Yellow Packets ar...

Страница 12: ...o Resetting to Factory Defaults on page 43 Package Contents The 3Com Baseline Switch 2250 Plus package includes the following items One 3Com Baseline Switch 2250 Plus unit One power cord Four standard...

Страница 13: ...h entfernen oder dem Switch hinzufuegen oder Instandhaltungsarbe iten verrichten lesen Sie die Sicherheitsanweisungen die in Appendix B Anhang B in diesem Handbuch aufgefuehrt sind Positioning the Swi...

Страница 14: ...uchtigkeit in das Geh use eindringen kann Die Luftzirkulation um den Switch und durch die ffnungen des Geh uses nicht behindert wird 3Com empfiehlt das Sie 25mm 1 Inch Zwischen raum sicherstellen Die...

Страница 15: ...en aus Aufstellen des Switch Der Switch ist eine Baueinheit hoch und passt in einen Standard 19 Zoll Baugruppentr ger ACHTUNG Entfernen Sie alle Kabel bevor Sie fort fahren Entfernen Sie die selbstkle...

Страница 16: ...nding helps to avoid damage from light ning and power surges Before powering on the Switch verify that network cables and the power cable are securely connected CAUTION The Switch has no ON OFF switch...

Страница 17: ...ength for each connection is not longer than 100 m 328 ft Figure 3 Connecting Devices to the Switch To connect a device to the Switch 1 Connect one end of the cable to an RJ 45 port on the Switch 2 Co...

Страница 18: ...SFP Transceiver To be recognized as valid the SFP transceiver must be one of the following 1000BASE SX SFP transceiver Use this transceiver to connect the Switch directly to a multimedia fiber optic c...

Страница 19: ...m the transceiver 2 Move the wire release lever downwards until it is pointing toward you 3 Pull the wire release lever toward you to release the catch mechanism The SFP transceiver should slide out e...

Страница 20: ...20 CHAPTER 2 INSTALLING THE SWITCH...

Страница 21: ...overy Application Logging On to the Web Interface Navigating the Web Interface Requirements for Accessing the Web Interface To connect to the Web interface you need the fol lowing The Discovery applic...

Страница 22: ...3Com devices When detection is complete the Discovered Devices screen displays detected network devices Figure 6 Discovered Devices Screen 3 On the Discovered Devices screen click Baseline Switch 2250...

Страница 23: ...e menu is located on the left side of the Web inter face When you click an item on the menu the related screen appears in the main part of the inter face Figure 8 Switch Screen Layout Table 8 lists th...

Страница 24: ...matically detecting the IP address that is assigned to the Switch and then using that address to connect to the Web interface If you know the Switch s IP address you can access the Web interface witho...

Страница 25: ...ample if the DHCP server assigned the IP address 192 168 0 123 to the Switch start your Web browser and then type http 192 168 0 123 Manually Assigned Static IP Address If you assigned a static IP add...

Страница 26: ...26 CHAPTER 3 CONNECTING TO THE WEB INTERFACE...

Страница 27: ...e firmware Viewing Summary Information The Summary screen which automatically loads after you log on to the Web interface provides a snapshot of the Switch s basic settings and versions of current com...

Страница 28: ...access the Web interface 3Com recommends that you set an admin password when you first configure the Switch Even if you do not intend to actively manage the switch 3Com recommends that you change the...

Страница 29: ...sticker on the base of the Switch This sticker con tains the MAC address and default IP address of the Switch To detect its IP information using the automatic con figuration process the Switch goes th...

Страница 30: ...tain an IP address from it Static Select this option if you want to manually assign an IP address to the Switch IP Address Specify an IP address that you want to assign to the Switch This option is on...

Страница 31: ...and disables flow control on the port When flow control is enabled for the port the Switch regulates the packet flow so that a sending device does not transmit more packets than a receiving device ca...

Страница 32: ...nto a gigabit port disables the corresponding RJ 45 port even if no fiber cable is inserted Advanced Port Configuration Use the Advanced Port Configuration tab to set the Switch s broadcast storm cont...

Страница 33: ...Figure 14 Create VLANs Screen Available options on the Create VLAN screen include VLAN ID ID of configured VLAN 1 4094 no leading zeroes Name Name of the VLAN 1 to 32 characters For examples on setti...

Страница 34: ...can only com municate with other ports assigned to the VLAN selected in the VLAN ID drop down list An uplink port is sometimes referred to as a tagged port The two terms refer to the same feature VLA...

Страница 35: ...d already exists 2 Set ports 1 3 and 26 to Desktop mode 3 Click Apply Ports 1 3 and 26 now belong to VLAN2 and will not communicate with any other ports unless you add other ports to the VLAN or chang...

Страница 36: ...g also called link aggregation refers to bonding multiple ports into a single group to effec tively combine the bandwidth into a single connec tion or a trunk If you are connecting the Switch to anoth...

Страница 37: ...ge 1 64 characters Flow Control Allows automatic or manual selec tion of flow control Speed Duplex Allows auto negotiation to be enabled or disabled When auto negotiation is dis abled you can force th...

Страница 38: ...Otherwise the Switch may not be able to copy all traffic effectively during periods of high traffic To set up traffic monitoring for a port 1 Connect a network analyzer to a port 2 Access the Web inte...

Страница 39: ...estart the Switch if you are experiencing problems and you want to re establish your Internet connection Figure 24 Restart Screen Any network users that are currently accessing the Internet will have...

Страница 40: ...sions of software can be downloaded via HTTP and copied to the Switch the Switch will restart and apply the newer system software version Figure 26 Upgrade Screen Once you have downloaded the software...

Страница 41: ...by the Root Bridge If a bridge does not get a Hello BPDU after a predeter mined interval the bridge assumes that the link to the Root Bridge is down This bridge will then initiate negotiations with o...

Страница 42: ...fies eight distinct levels of priority 0 to 7 each of which relates to a particular type of traffic The priority levels and their traffic types are shown in the following table Table 10 Priority Level...

Страница 43: ...he Switch after you reset it To reset the Switch to its factory defaults 1 Using the tip of a pen or a similar object press the Recovery button on the rear panel of the Switch See Figure 1 for illustr...

Страница 44: ...Link Activity LEDs 5 Power LED A link is connected but the Link Activity LED for the port is off There is a problem with this connection Verify that The device being connected to is powered on and op...

Страница 45: ...ear to show continual activity There may be broadcast storms on the network Remove port connections one at a time waiting a few seconds between each port If the LEDs go off after removing a port conne...

Страница 46: ...46 CHAPTER 5 TROUBLESHOOTING...

Страница 47: ...tware upgrades onsite assistance or advance hardware replacement Experienced engineers are available to manage your installation with minimal disruption to your network Expert assessment and implement...

Страница 48: ...number and serial number Proof of purchase if you have not pre registered your product A list of system hardware and software including revision level Diagnostic error messages Details about recent c...

Страница 49: ...6348 Europe Middle East and Africa Telephone Technical Support and Repair From anywhere in these regions call 44 0 1442 435529 From the following countries you may use the numbers shown Austria Belgiu...

Страница 50: ...800 998 2112 1 800 998 2112 AT T 800 998 2112 AT T 800 998 2112 AT T 800 998 2112 57 1 657 0888 AT T 800 998 2112 1 800 998 2112 571 657 0888 01 800 849CARE AT T 800 998 2112 AT T 800 998 2112 54 11 4...

Страница 51: ...n The appliance coupler the connector to the unit and not the wall plug must have a configuration for mating with an EN60320 IEC320 appliance inlet The socket outlet must be near to the unit and easil...

Страница 52: ...mise la masse Vous devez raccorder ce groupe une sortie mise la terre mise la masse afin de respecter les normes internationales de s curit Le coupleur d appareil le connecteur du groupe et non pas la...

Страница 53: ...re de connexion portant l appella tion Neutre et avec raccordement direct la terre masse Cordon lectrique Il doit tre agr dans le pays d utilisation Etats Unis et Canada Le cordon doit avoir re u l ho...

Страница 54: ...eingebaut werden Das Ger t sollte nicht an eine ungeerdete Wechsel stromsteckdose angeschlossen werden Das Ger t mu an eine geerdete Steckdose ange schlossen werden welche die internationalen Sicherh...

Страница 55: ...ertragungslaser betrachten w hrend dieses eingeschaltet ist Niemals direkt auf die Faser ansnchl sse und auf die Faserkabelenden schauen w hrend diese eingeschaltet sind WARNUNG Die Verwendung von Ste...

Страница 56: ...56 APPENDIX B SAFETY INFORMATION...

Страница 57: ...22 Class A FCC Part 15 Subpart B Class A ICES 003 Class A VCCI Class A AS NZS 3548 Class A CNS 13438 Class A Immunity EN 55024 Operating Temperature 0 45 C 32 113 F Humidity 10 95 non condensing Stand...

Страница 58: ...58 APPENDIX C TECHNICAL INFORMATION...

Страница 59: ...f duplex Autonegotiation is defined in the IEEE 802 3 standard for Ethernet and is an opera tion that takes place in a few milliseconds Autonego tiation must be enabled for the 1000BASE T ports to ope...

Страница 60: ...NT Server Ethernet A LAN specification developed jointly by Xerox Intel and Digital Equipment Corporation Ethernet net works use CSMA CD to transmit packets at a rate of 10 Mbps and 100 Mbps over a va...

Страница 61: ...er IP Address Internet Protocol Address A unique identifier for a device attached to a network using TCP IP The address is written as four octets separated with peri ods full stops and is made up of a...

Страница 62: ...of various types of fiber optic and copper based transceivers into the host equipment subnet address An extension of the IP addressing scheme that allows a site to use a single IP network address for...

Страница 63: ...by attaching a network analyzer to one switch port in order to mon itor the traffic of other ports on the Switch trunking A method which specifies how to create a single high speed logical link that c...

Страница 64: ...64 GLOSSARY...

Страница 65: ...ord 43 free standing 14 front panel Link Activity LEDs 10 Module Active LEDs 11 Power LED 11 RJ 45 ports 11 self adhesive pads 12 SFP ports 10 full duplex 60 G Gigabit Ethernet 60 H half duplex 60 I I...

Страница 66: ...8 10 SFP transceivers 18 approved supported 18 inserting 18 removing 19 spot checks 19 subnet mask 62 switch defined 62 T TCP IP 61 defined 62 traffic 63 monitoring 38 troubleshooting 43 forgotten IP...

Страница 67: ...res Reorient the receiving antenna Relocate the equipment with respect to the receiver Move the equipment away from the receiver Plug the equipment into a different outlet so that equipment and receiv...

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