Manuale d’uso / di manutenzione del prodotto OfficeConnect 3C16710 del fabbricante 3Com
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Part No. DUA167 1-0AAA03 Published October 1 997 O F F I C E C O N N E C T ® H U B 8/TPM 3C1671 0 U S E R G U I D E 16710.bk : FRONT.FRM Page 1 Tuesday, October 7, 1997 11:38 AM.
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C O N T E N T S I M P O R T A N T S A F E T Y I N F O R M A T I O N W I C H T I G E S I C H E R H E I T S H I N W E I S E L’ I N F O R M A T I O N D E S É C U R I T É I M P O R T A N T E Y O U R H.
M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Inst allin g Quic k Confi g Ma nage r 4-1 Inst allati on Re qui rement s 4-1 Inst allati on Proced ure 4- 2 Ru nning Q uick .
View ing I nterna l Version Nu mbers 5 -20 Down load ing a S oft ware Up grade 5-21 P R O B L E M S O L V I N G Iso latin g a Pro blem 6-1 Problem s When Usin g Y our H ub 6 -2 Problem s When Usin g Q.
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I M P O R T A N T S A F E T Y I N F O R M A T I O N WA R N I N G : Warnin gs co nta in direc tion s t hat yo u must follow for y ou r personal safety. Follow all instructions carefully .
W I C H T I G E S I C H E R H E I T S H I N W E I S E ACH T UN G: Die W a rnungen ent halten Anweisungen, die Sie zu r eigenen Sicherheit zu befolgen haben . Lesen S ie bitte die folgenden Information en sorgfältig durch, b evor Sie den Hub einbauen : ■ Auf b esondere Vorsicht muß währen d des Ei n- und Ausbaus des Hub s geachtet we rden.
L’ I N F O R M A T I O N D E S É C U R I T É I M P O R T A N T E A VERTISS EMENT : Les avertissements contiennent les ins tru ctions que v ous devez suivre pour votre sécurité personnelle .
Y O U R H U B A D D R E S S E S U sing Quic k Conf ig Mana ger , yo u can con figur e address information for your hub, which affects the way you can mana ge it. It is important th at you no te dow n th is i nfo rm atio n a s yo u ma y nee d to ente r it when man aging the hub a gain.
A B O U T T H I S G U I D E Intr oduction This guide des cribes how to set up and manage t he OfficeConnect® Hub 8/TPM. The hub is ready for use in your ne twor k.
2 A B O U T T H I S G U I D E C onv entions The ic on conv entions that ar e used in this guide ar e: The tex t conventio ns that are us ed in thi s guid e are: Icon Type Desc ripti on Information Note Inf ormation no tes call atte ntion to important features or instructions.
1 I N T R O D U C T I O N We lcome to the w orld of n etworking with 3Com ® . In the mod ern business envi ronment, comm unic ation an d shar ing info rmat ion is cruc ial. Co mput er n etwo rks h av e pr ov ed t o be one of th e fastes t modes of c om munication but until now only large busine sses could af ford the network ing advant age.
1-2 C H A P T E R 1: I N T R O D U C T I O N a stac k (each hub is a sing le repea ter) . The Office Connec t Hub 8/TP M h as e ight 1 0BASE-T ports and a ni nth 10B ASE -2 ( Coa x) port.
Networking Te rminology 1-3 A Segment i s the l eng th of Eth ern et ca ble c onn ecte d to a port, whet her this c able is 10BASE- T , 10BASE- 2 (Coax) , o r oth er ty pe. Wh en you dais y- ch ai n equipme nt to gether wi th 10BASE- 2 (Coa x) cab le, all of the cable forms a single seg ment.
1-4 C H A P T E R 1: I N T R O D U C T I O N IP (In ternet P ro tocol) is a data communication proto col use d to c o nne ct computer s and data equipm ent into comp uter networ ks.
2 C R E A T I N G Y O U R N E T W O R K All of the pr o d u cts in the Office Connec t® r ange are design ed for ease of use. This chapter d escribes how to us e yo ur Off ice Connec t Hub 8/TP M to .
2-2 C H A P T E R 2: C R E A T I N G Y O U R N E T W O R K Figure 2-1 The LEDs And How T o U se Them 16710.bk : CREYRNET.FRM Page 2 Tuesday, October 7, 1997 11:38 AM.
LEDs and P orts 2-3 Figure 2-2 The P o rts And H ow T o Use T hem 16710.bk : CREYRNET.FRM Page 3 Tuesday, October 7, 1997 11:38 AM.
2-4 C H A P T E R 2: C R E A T I N G Y O U R N E T W O R K Before Y ou Start Y our Of ficeCo nnect hub comes with: ■ One po wer adapt er for use wit h the O ffice Co nn e c t hub ■ A Warranty R egistration card for you to fill out and return ■ F our r ubber feet ■ F our st acking clips ■ One 3 .
Posi t ion ing th e Office Connect H ub 2-5 In or der to c omply wit h the 10 BASE-T st andar d, po rts designed for workstation connections have been marked with the gr aphical symbol ‘x’ . This denotes a crossov er in the por t’ s internal wiring, for example 1x, 2x, 3x.
2-6 C H A P T E R 2: C R E A T I N G Y O U R N E T W O R K Using th e Rubber F e et and Stack ing Cl ips The four se lf-adhe sive rubber feet prevent your hub fr o m s liding aroun d on your desk. Stic k the feet to the mark ed areas at each corner of the un dersid e of you r h ub.
Wall M ounting the Office Connect H ub 2-7 W all Mounting the Off ice Connec t H ub There are two sl ots on the und erside of t he OfficeConnect h ub which are used fo r wall mount ing. Y ou ca n mount the hu b with t he LEDs facing upward s or downwards, to suit yo ur needs.
2-8 C H A P T E R 2: C R E A T I N G Y O U R N E T W O R K The hu b detec ts all por t co nnec tions, so y ou can st art usin g y our n et work im medi at ely . Wh en y ou nee d more po r t s, simp ly add mor e Offi ce Conne ct hub s. If y ou are using po rt 8 to connec t a worksta tion, ensure the MDI/MDIX switch is set to MDIX.
Conne cti ng Of fic e Conn ect H ubs Tog et her 2-9 Connecting Hubs Us ing 10 BASE-2 (C oax) When using 10BASE-2 (Coax) cable, it is impo rtant that bo th ends of the segment are p roperly terminated with 50 Ohm terminators ( end pieces ) . Only use 5 0 Ohm 1 0BASE-2 (Coax) cables an d use a ‘Y ’ piece for ea ch hub.
2-10 C H A P T E R 2: C R E A T I N G Y O U R N E T W O R K Connecting H ubs Using 10BASE-T Y ou c an connect hubs together wit h 10BASE-T in a number of ways, but for simplicity we reco mmend the foll owing metho d: 1 Startin g from the bottom, connec t port 8 of the lowe r hub to po rt 7 of the hub im mediately above.
S pot Checks 2-11 Check ing Hub C o nnection s When y ou have con nected your hubs , power th em on. The Por t Status L EDs for the por ts yo u have used should be green for 10 BASE-T , or off for 10BASE- 2 (C oax) . If they ar e not, check y our conn ectio ns .
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3 A B O U T N E T W O R K M A N A G E M E N T Net work m anageme nt is no t requ ired to get your hub work ing, it simpl y al lows yo u to ch ange t he w ay it work s and to monit or what is hap pening to your network.
3-2 C H A P T E R 3: A B O U T N E T W O R K M A N A G E M E N T inform ation throu gh a variet y of ser vice s. This appendix d escribes these services.
Conne cting to the H ub and Mana ging 3-3 ■ Conf igure securi ty for the hub , incl uding setting up new u sers and sp ecifyin g what equi pmen t is all owe d to c omm uni cat e thr ou gh th e hu b. ■ Set up r esilienc e; specify a ba ckup connection that takes over sh ould a main conne ction fail.
3-4 C H A P T E R 3: A B O U T N E T W O R K M A N A G E M E N T Figure 3-1 Diffe rent M anageme nt C on nections T o The Hub Mana ging T hrough the C onsole P ort This sec tion d escrib es how to c onnec t and se t up equipme nt to communi cat e with th e hub thro ugh the co nsole por t (cal led out-of-band mana geme nt).
Conne cting to the H ub and Mana ging 3-5 Using Qui ck Config Manage r C onnect one end of the null modem cabl e to the conso le port on th e hub , and the other to the s erial (RS232) port on your managemen t station. Qu ic k Con fig Ma na ge r us e s SLI P to ma na ge yo u r hub.
3-6 C H A P T E R 3: A B O U T N E T W O R K M A N A G E M E N T Mana ging Over the N etwor k This se ct ion des cri be s how to se t up equ ipm en t to allow you to communicat e with the hub over the netw ork (c alled in-ban d mana gement ).
Re mot e Mana ge men t Ser vic e 3-7 Refer to Chap ter 5 for inform ation on perfor ming add ition al ma nage me nt u sing t he VT100 mana gem ent inter fac e.
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4 M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R This chapter descri bes how to in stall and u se Quick Config M anager. F o r an over view of wha t you can do wh en mana gin g the hub, see Chap ter 3 .
4-2 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Insta llatio n Proced ure Quick C onfig Manag er can be ins talled on it s own or on to a wor kstati on tha t alread y has othe r Transcend ® mana gem ent app licati ons in stalle d on it.
Configur ing Multiple Hubs 4-3 If you are go ing to man ag e ove r a ser ia l li nk fro m your ma nagem ent sta tion, Q uick Co nfig Man ager uses COM1 as the defaul t serial por t. You can change thi s by editin g the follo wing line under the [slip] subsection o f the QUICKMGR .
4-4 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Figure 4-1 Quic k Config Manage r Window M ap 16710.bk : MANAGING.
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4-6 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Accessing the Hub The Of ficeConne ct Hub 8/TP M use s com munit y strings as a securi ty me asu re, to ch eck m anag emen t acces s to the hu b. T he co mmunit y string you use mus t match one of th e co mmun ity st rin gs co nfi gured fo r th e hub .
Giving th e Hub an IP Addres s 4-7 Y ou can a lso use the Com munit y/Polling sc reen to: ■ Auto matically di spl ay a gr aphic al repr es entat ion of the hub e ver y ti me you star t Q ui ck Con fig Mana ger. ■ Defi ne how regu larly the g raphic al represent ation of the hub is up dat ed.
4-8 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R T o di splay the IP Setup dialog bo x and view or configure the hub’ s add ress setting s: 1 Fro m th e Conf igure men u, se lect IP Setup .
Giving th e Hub an IP Addres s 4-9 2 Ent er the relevan t information in to th e IP S etu p diolog box or E asy Setup screen s and c lick on OK to exit the sc reens. 3 Res et the hub f or an y cha nges to take eff ect, s ee “Rese tting th e Hub” on pa ge 4-11 .
4-10 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R ■ Subnet M ask — Prov ides a box fo r you to type the subnet mask for the I P address. ■ Ena ble IP — If disa bled, the IP field s for this dialog box are bl anked and graye d-out.
Resetti ng the Hub 4-11 Resetti ng the Hub Resett ing the h ub sim ulates sw itching th e hub off and on. Y ou may wa nt to re set the hub if you wa nt to: ■ Apply an y changes made t o the hub ’ s IP co nfi gurat ion. ■ Re sets the hub’ s st ati stic s coun te rs.
4-12 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R View ing the Hub Quic k Config Mana ger ca n display a graph ical represe ntatio n of the hub you are .
Displaying I nformation About the Hub 4-13 Displa ying Informat ion About the Hub Quick Con fig Mana ger en ables you to d isplay det ailed infor mat ion abou t the hu b . Th is info rmatio n is st ored withi n the hub in a list, call ed a MI B (Man ageme nt In form atio n Base ).
4-14 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R sysD esc r Shows the syste m descript ion supplied by the hub ’ s Manage ment Age nt so ftwar e. sysO bje ctI d Shows the SNMP object identifie r f o r the hub ’ s Manage ment Age nt so ftwar e.
Setting Up t he Alert L ED 4-15 Settin g Up the Alert LED The Alert LED can w arn y ou of poten tial prob lems with your network. Quick Conf ig M anager allows yo u to: ■ T est the Al ert LED . ■ Config ure the cond ition s that cau se the Ale rt LED to ligh t.
4-16 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Figure 4-6 Alert s P anel 3 Config ure the cond ition s for the Al er t LED. 4 Cli ck on OK wh en th e Al er t LED setu p is compl ete. If any Al er t cond itions are act ive, the con diti ons are displa yed in r ed.
Setting Up t he Alert L ED 4-17 C oax P ort Pa rtiti on Enabled / Disa bled Allows y ou to s pecify whethe r the Alert LED lights if the c o ax ial port becomes partitione d. If this conditio n is resolv ed after causi ng the Alert LE D to li ght, the L ED g oes off (i t sta ys li t if o the r conditio ns also ca u sed i t to lig ht).
4-18 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Networ k Util ization Hi gh / M ed / Low / Disabled Allows y ou to s pecify whet her the Alert LED lights if a certain le vel of ne twork utiliz ation is ex ceeded for five seconds.
Monitorin g 4-19 Mon itorin g Activ ity and Er rors Stat istic s Quick Con fig Manager allows you t o displa y the total net work acti vity and er ror s seen by a port or the h ub (all po rts) in any one tim e period.
4-20 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R T otal E rrors Shows the total numb er of errors that hav e occurred per poll, it should be a small percentag e of the reada ble frames f igure.
Monitorin g 4-21 F rame T y pes S tat isti cs Quick Con fig Manager allows you t o displa y the total networ k fram e type s seen by a po rt or t he hub (al l ports) in an y one time period.
4-22 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Unica st Show s the pe rcenta ge of re adabl e frame s received tha t are addressed to singl e devices. Multi cast Show s the pe rcenta ge of re adabl e frame s rec eived th at are addressed t o multiple devices.
Monitorin g 4-23 Figure 4-9 Network T raffi c Graph Netwo rk Errors Statisti cs Quick C onfig Manager allows y ou to dis play the numb ers of fram es with error s seen by a p or t or the hub (all ports) in a ny one time period .
4-24 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Figure 4-10 Network Errors G raph FCS Er rors Shows the n umber of f rames received wit h ch ecksu m err ors t hat do not hav e a lignme nt errors.
Config uring a Port 4-25 Check the cab le routing and reroute any ca blin g which may be affected by o ther noise sources . Late Ev ents Shows the n umber of f rames for wh ich a collisio n was detected afte r the valid packet mini mum ti me.
4-26 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Y ou ca n confi gure a po rt s o that it sends a trap to a netw ork mana geme nt a pplic ation when the statu s of the li nk changes ( for example , if a device is connec ted to or disconnec ted from the por t), or when t he port part it ions.
Config uring a Port 4-27 5 Select eit her Enable or Di sable for Lin k T raps, Parti tion Traps, and Learn St atio ns. 6 Click on OK . In the Repeater Port Info panel: Media T ype Shows the type of media co nnect ed to the por t.
4-28 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Hub Secu rity The Of ficeConne ct Hub 8/TP M provid es flexible comm unic ation b etween your wor kstat ions and other net work equip ment. It is a g ood idea to confi gure security for the hub to prote ct yo ur network from unwanted commun ications.
Hub Security 4-29 Configuring S ecurity at Port Level T o conf igure sec urity f or a por t: 1 Fro m th e View menu , se lect Zo om In to d ispla y th e repr esentati on of the hub. 2 Double-clic k on the port for wh ich you wan t to con figure se curi ty.
4-30 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R ■ MAC Address — Allow s you to enter the MA C add ress for a devi ce to be au thori zed to tran smit throu gh this port. When you have typed t he MAC address , click on <Ad d .
Hub Security 4-31 ■ Disable on Intrusion — Compa res the source address of all fram es received o n the por t to the authori zed addresse s for that por t. If the source addr ess o f the in comi ng fram e does n ot mat ch the authori zed addres ses fo r this port, t he por t is disab led to preven t comm unicat ion.
4-32 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Figure 4-13 Security Configuration Panel Quick C onfig Manager d isplays the Se curity Config uration panel , as sh own in Figu re 4- 13 . 3 Config ure the secur ity featu res for ea ch por t.
Resili ence 4-33 Resilien ce Y ou can make your network more robust by adding re sil ie nce to it. When a lin k fails, as shown in Fi gure 4- 14 , all comm unicatio n between equipme nt on ea ch side of the li nk is lost.
4-34 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Resilient Links ar e available over twisted pair media (10BASE-T ) because it carries a link test pulse which is used to d ecide whether the m ain lin k has failed and the standby link should take over .
Resili ence 4-35 CAUT ION : Remember that you must always follow the hub connection requirements when linking hubs together, which inv olves the use of port 8 and the MDI/MD IX switch. If por t 8 is al r eady in use , you may need to use special crossover cabling for an y fur ther l inks yo u wish t o make.
4-36 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Figure 4-16 Create Resilient P air Dialog Bo x In the Resilience Links panel: Main P or t Shows the por t numbe r of the main link. Sta ndby Por t Shows the por t nu mber of the stand by lin k.
Using the Hub to Monitor Oth er Devices 4-37 Dele te Remov es the resilie nt link pair from the t able when an en try in the res ilience table is selected . If yo u de lete a n en tr y i n the re sili enc e tab le, t he curren t acti ve link rem ains en abled and the c urrent sta ndb y li nk is canc el led .
4-38 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R 2 In the Gen eral Info dial og box, choose the WorkGroup cate go r y . 3 In the Work Group M onito r pane l, clic k on Add . Quick C onfig Manag er displays t he Add Remote P oll dialo g box, as show n in F igure 4- 17 .
Additional Ma nagement 4-39 Wh en y ou ha ve added a d evi ce t o th e W orkG roup Monit or table , it s entry is co lor- coded: ■ Gre en — Device being polled and co mmuni cati ng. ■ Red — Device be ing polled but is not co mmuni cati ng. ■ Blue — Device n ot being polled by the hub .
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5 A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Thi s cha pte r des crib es th e ad di tion al ma nage me nt tasks yo u can per form using VT 100®. For an ove r view of th e manag ement you can per form and th e dif fer ent w ays y ou c an make a ma nagemen t conne ction to th e hub, see Chap ter 3 .
5-2 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Scree n Comp onents The main par t o f a typical s creen contai ns several differ ent types of item.
VT100 User Interface 5-3 Specia l Ke ystroke s As well as th e keyst rokes prev iously de scribe d , th ere are severa l other key strokes for co ntrolling the VT100 in terface.
5-4 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Repeater , Unit and P or t Screens There a r e three leve ls at whi ch you can mana ge the hub u sing VT100: ■ Repea t e r — If yo u manage at Repeate r level, y ou are mana gin g or vie wing the de vice as a who le.
S creen Map 5-5 Figure 5-1 VT100 Scr een Map 16710.bk : MANVT100.FRM Page 5 Tuesday, October 7, 1997 11:38 AM.
5-6 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Getting Started Th is s ec tion ex pl ain s l ogg in g o n to the VT 100 management f acility , d isplaying the ma in menu and logging off.
Getting Started 5-7 If you cannot see t he main banner or it displa ys incorrectly , it may be that: ■ Y our terminal is not configured as a VT100 terminal. Check that your term inal is set up to operate with the same pa rameters that the hub ’ s console p ort uses.
5-8 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 If you are lo gging on fo r the first tim e (after installation or i nitialization), u se one of the default user names and passwords sh own in the followin g table.
Getting Started 5-9 Mai n Menu T he Ma in Men u, as s ho wn i n Figure 5-4 , is used fo r acce ssing the vario us VT100 screen s. Figure 5-4 Main Menu If you are usi ng the m anagem ent facilit y for the f irst time , w e suggest that yo u: ■ Set up logons for any othe r user s a nd ass ign each user an a pprop riate sec urity le vel.
5-10 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 C onfiguring an d V i ewing Setup Inform ation The Ma nagem ent S etup scre en, as sh own in Figure 5-5 , is u sed to con figure IP , IPX and SLIP parame ters for the hub.
Configurin g and Viewing S et up Information 5-11 SLIP A ddress SLIP (Serial L ine Inter net Protoc o l ) allows IP to run over the cons ole por t instead of the network . SLIP allows you to use out- of-band T elnet or SNMP manag ement, eith er locally or remote ly throug h a modem .
5-12 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Stat us Ena bl ed / Disabled This field shows whether the data link protocol is enabl ed. C hoose Disa bled if you w ish to prevent acces s for any re ason, such as se cur ity co nside ratio ns.
Co nnec ti ng a Mode m to t he C onso le P ort 5-13 IP or IPX Address Ente r the IP or IP X ad dre ss of the remot e network manage ment station to which SNMP traps shoul d be sent. Commu nity String The c ommunity string allo ws a ver y si mp le me th od o f aut hen tic ation bet we en th e hub and the rem ote net work mana gem ent stati on.
5-14 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Figure 5-7 Conso le Port Se tup Scree n If you alte r the consol e port settin gs and s elect OK , yo u terminate any existi ng session using the conso le po rt .
Confi guring Loca l Security 5-15 Flow Control NONE / XON /XOF F / RTS - CTS Bidi rectiona l / RTS - CTS Uni directi onal Select t he flow contr ol option that corr esponds with yo ur ter m ina l or mod em . Sp eed Auto-Co nfig / 1200 / 2400 / 4800 / 9600 / 19200 Select the baud rate fo r your t ermina l or m odem.
5-16 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 The acce ss level s are defi ned as : ■ Monitor — This allows the user to v iew the essen tial oper ations of the hub and to establish whethe r o r not th e h ub is oper ating correctly .
Configu ring Users 5-17 Configurin g Users Crea ting Us er s The Create User screen, as shown i n Figure 5-9 , is used t o add new use rs. This o ption is availa ble only for users w ith secu rity access l evel. Th ere can be up to 1 0 use rs, inc lu di ng th e thr ee de fa ult us ers .
5-18 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Editing Users T he E dit User sc re en, a s s hown in F igure 5- 10 , is used to cha nge your own passw ord or communi ty string. This opti on is av ailable only for users with securit y access level.
Pollin g a Remote Devi ce 5-19 Dele ting U sers The Delet e Users screen, a s shown in Fi gu r e 5- 1 1 , is used to remove users from th e User List. The User List shows all o f the users c onfigured for th e hub. This option is av ailable only for users wit h securit y acces s level.
5-20 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 The O ffice Conne ct Hub 8 /TP M must have an IP or IPX address configured for it , to enable it t o receive responses from the device it is polling. T a rget Ad dres s Enter the IP or IPX add r e ss of the dev ice to pol l.
Downloading a Software Upgrade 5-21 Syste m Up T ime This field indic ates how long the hub has bee n runnin g since the last reset. Number of Resets This fiel d shows the total numb er of re sets since the hub was first instal led, or initial ized . Last Re set T ype This field i ndica tes t he cause of the last re set.
5-22 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 inform ation throu gh a variet y of ser vice s. This appendix d escribes these services.” on page C-1 . The software download c an be perfo rmed through a serial connection (over SLIP) but it is much fa ster over the n et work.
6 P R O B L E M S O L V I N G The Office Conne ct® H ub 8/T PM ha s been de signed to a id you when d etecting and solving pos s i ble problems wi th your network. These pr oblems are rarely ser ious, the cause is usually a disc onnected or damage d cabl e, or incorrect con figuration .
6-2 C H A P T E R 6: P R O B L E M S O L V I N G Pr oblems Whe n Using Y our Hub P ower LED not lit . Check your power adapte r connection. If t here is sti ll no power , you may hav e a fault y power ad apter whi ch need s replac ing wit h anoth er O ffice Connec t po wer a dapte r .
Problems When Using Quick Config Manager 6-3 Pr oblems Whe n Using Quic k Config Mana ger Y ou cannot ac cess the hub . F or a su cce ssf ul loca l mana gem ent conne ctio n, you ne ed to use a stand .
6-4 C H A P T E R 6: P R O B L E M S O L V I N G Check the settin gs on your ter minal or em ulator. The parity mu st be se t to ‘ non e ’ , th e stop bi t ‘ 1 ’ and t he chara cter si ze ‘ 8 ’ . T he ma nageme nt fa cil ity’ s autoc onfigurati on works only with speeds fr o m 120 0 to 19200 baud .
Problem s W hen Using an IP/IPX- ba sed Ma nage ment Ap plic ation 6-5 The IP/IPX-b ased manageme nt app lication can no lo nge r ac cess th e d evic e. Chec k that Community- SNMP access is e nabled, see “C o nfig uring Local Secur ity” on page 5-15 .
6-6 C H A P T E R 6: P R O B L E M S O L V I N G 16710.bk : PROBSOLV.FRM Page 6 Tuesday, October 7, 1997 11:38 AM.
A D I M E N S I O N S , S T A N D A R D S A N D C A B L I N G Dime nsions and Opera ting Env ironmen t Fi gur e A -1 Dim ensions And Op erating Environm ent For The Hub BABT Approval (f or U.
A-2 A P P E N D I X A: D I M E N S I O N S , S T A N D A R D S A N D C A B L I N G Cab l in g 10BASE-T Fig ur e A -2 Pin Numbering F or 10BASE-T Straight-through Fig ur e A -3 Straight-through 10BASE-T Cab ling Cro ssove r Fig ur e A -4 Crossover 10BASE-T C abling 16710.
Cablin g A-3 C onsol e P ort Fi gur e A -5 Pi n Numb erin g Fo r Seri al Co nne ction Ex am ples of N ull Mod em Ca bl es Y ou C an U se Fi gur e A -6 Example Of Null M odem Cabli ng F or 9 Pi n W orkstat ion Fi gu re A- 7 Example O f Null Modem Cabling F or 25 Pin Workstation 16710.
A-4 A P P E N D I X A: D I M E N S I O N S , S T A N D A R D S A N D C A B L I N G Mode m Cabl e Fig ur e A -8 Mode m Cabling For 25 Pin Mod em Mana gement Se ttings Y ou need to set your ma nag ement eq uipme nt to: ■ Character size — 8 ■ Stop bit — 1 ■ Pa rity — No ne 16710.
B IP A N D IPX A D D R E S S E S IP Addresses A worl d-wi de ne twork s uch as the I ntern et nee ds a glo bally-a ccepte d method of iden tifying individua l dev ice s (wo rk stati on s an d net wor k equ ipm en t). Dev ices on th e I nte rnet are assi gne d uni que addresse s.
B-2 A P P E N D I X B: IP A N D IPX A D D R E S S E S Obtaining a Network Number There are th ree organizat ions responsi ble for alloc ating ne twork number s.
IP Address es B-3 Asia Paci fic Ne twor k In form ati on C e ntre (APN IC-DO M) Att ent ion: Asia Pa cif ic Ne twork Inf ormatio n Centre (APN IC-DOM ) c/o Compute r Centre University o f T okyo 2-11- 16 Y ay oi Bunkyo-ku , T o kyo 113 Japan Admi n.
B-4 A P P E N D I X B: IP A N D IPX A D D R E S S E S Cla ss A. The hig hes t ord er b it is set to 0, g ivi ng a seve n-bit net wor k numbe r an d a 24-bi t devi ce addre ss. Y ou can ha ve 125 networks wi th 16,777,214 dev ice s per ne two rk, and t he add res ses ar e in t he rang e 001.
IP Address es B-5 The bits of t he subnet m ask are set to 1 if the d evice should trea t the co rrespondi ng bit in the IP addr ess as par t of the original netw ork number or as part of the subn et numb er . Thes e bits in the m ask are se t to 0 if t he devic e should t reat th e bit as pa r t o f the dev ice nu mber , as sho wn in Figure B-1 .
B-6 A P P E N D I X B: IP A N D IPX A D D R E S S E S IPX Addresses If you are usi ng the IPX p rotocol, the Office Connect ® Hub 8/TPM is allocate d an IPX addr ess automat ically by the local IPX rout er or NetW are F ile Server. This happens approximate ly 60 seconds after the hub is po wer ed up for t he fi rst t ime .
C T E C H N I C A L S U P P O R T 3Com provides ea sy access to tec hnical suppo rt informatio n through a v ariety of s er vices. This appe ndix descri bes these ser vi ces. Informatio n contained in this appen dix is correct at time o f publication .
C-2 A P P E N D I X C: T E C H N I C A L S U P P O R T Ac ces s by Di gi ta l M od em ISD N u sers c an dial in to 3Co mBB S us ing a dig ita l mo dem fo r fas t acce ss up to 56 K bps.
Onlin e Technical Services C-3 3C omF oru m on C omp uServe Onl ine Servic e 3ComForum is a CompuS er ve-based ser vice cont ain- ing pat ches, software , drivers , and te chnical artic les about al l 3Com pr oducts, a s well as a messaging section for peer support.
C-4 A P P E N D I X C: T E C H N I C A L S U P P O R T Support from Y our Network Su pp l ier If addit ional ass ist ance is r equi red , c ont act yo ur netwo rk supp lier.
Support fro m 3Com C-5 3Com B enelux B.V . Belgium Netherlands 32 2 725 0202 31 30 6029700 3Co m Canada Calgary Montreal Ottaw a Toronto Vancouver 403 26 5 3266 514 68 3 3266 613 56 6 7055 416 49 8 32.
C-6 A P P E N D I X C: T E C H N I C A L S U P P O R T Retur ning Pro duc ts f or Repair Before you sen d a product directly to 3Com for repa ir , you must f irst obta in a Retu rn Materia ls Author izatio n (RMA) num ber. Products sent to 3Com withou t RMA numbers will be ret urned to the sender unop ened, at the sen der ’ s expen se.
I N D E X Nume rics 10BASE-2 1-2 , 2- 5 conn ecting hub s 2-9 segment 1-3 10BASE-T 1-2 , 2-4 , 2-5 , A-2 conn ecting hub s 2-10 3Com Bulle tin B oard S er vice (3 Com BBS) C-1 3Com sa les offices C-4 .
a modem to th e console port 5-13 managem ent 3-3 work stati ons 2-7 c onne ctin g hubs tog ethe r 2-8 using 10BASE-2 (Coax ) 2- 9 using 10BASE-T 2-10 con ne c tio ns checking 2-11 hub 2-5 work stati .
conn ecting to anothe r hub 2-8 connections 2-5 do uble- clic ki ng 4-12 gene ral inf orm atio n 4- 13 getting sta r ted 1-1 grap hi cal r epre sen tati on 4-7 , 4- 12 ini tiali zing 4-11 IP a ddress .
MIB I I dia log box 4-13 modem 1-4 , 5-13 , A-4 modem dia l-out 3-7 mo nitor fail ure 4-17 monito ring 4-18 other devices 4-37 mo unti ng 2-7 mu ltica st fr ame s 4-22 N Need T o Kn ow 4-28 NetW are f.
re mote mana gement service 3-7 Rem ote Poll scre en 5-19 remote telnet acce ss 5-16 reseller supp ort tool 3-7 rese tting th e hub 4-11 resi lience 4-33 Res ilien ce dial og box 4-35 resi lient li nk.
temp e ratur e A-1 Te r mi n a l 3-5 ter min al e mul ator 3- 3 , 3-5 connecting 3-5 ter min al spe ed 5-15 terminology 1- 2 tes tin g th e Al er t LE D 4-16 TF TP se rver a ddres s 5-22 th rot tle 5-.
L I M I T E D L I F E T I M E W A R R A N T Y HARD WA RE: 3Co m war rants i ts ha rdware p roduc ts to b e free fr om defects in wor kmanshi p and mat erials , unde r normal use and service, for the f.
W ARRANTIES EXCL US IVE: IF A 3COM PRODUCT DOES NO T OPERA TE AS W ARRANTED ABOVE, CUSTOMER’S SOLE REMEDY F OR BREACH OF THA T W ARRANT Y SHALL BE RE P AI R, RE PLA CEME NT , OR REF UND O F TH E PURCH ASE PRICE P AID, A T 3C OM’S OPT ION.
EMC S T A T E M E N T S FCC STA T EME NT: This eq uipment has be en teste d and found to com ply with the limits for a Class B digit al device, pursua nt to par t 15 o f the FCC rules. Th ese lim its are desig ned to provide rea sonab le prote ctio n aga inst harm ful interference in a residential instal lation.
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Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il 3Com OfficeConnect 3C16710 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del 3Com OfficeConnect 3C16710 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso 3Com OfficeConnect 3C16710 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul 3Com OfficeConnect 3C16710 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il 3Com OfficeConnect 3C16710, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del 3Com OfficeConnect 3C16710.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il 3Com OfficeConnect 3C16710. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo 3Com OfficeConnect 3C16710 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
