3Com OfficeConnect 3C16710 manual

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[...]

3 C om C o r p o r a t ion ■ 5 40 0 B a y f ront Pl a za ■ S an t a C l a r a , Ca l i f o r nia ■ 9 505 2 - 8 145 © 3 C om T e c h nolo g i e s , 19 9 7 . All ri g hts r e s e r v e d . N o p a r t o f this docum e ntatio n m a y b e r e p roduc e d in any f orm or b y a ny m e ans o r u s e d t o m a k e a n y d e r i v a t i v e w o r k ([...]

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 U B A D D R E S S E S A B O U T T H I S G U I D E Introduction 1 How to Use Th is Gu ide 1 Conventio ns 2 I N T R O D U C T I O N Netwo rking T e rmi[...]

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 C onf ig Man ager 4-2 Configu ring Multip le Hu bs 4- 3 Quick Config Manag er Wi ndow Ma p 4-3 Acces sing th e Hub 4-6 Givin g the H ub an IP Add ress[...]

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 Quic k Config Mana ger 6- 3 P roblems When Usi ng VT100 6-3 Problem s When Usin g an IP /IPX - ba sed Ma nage ment Ap plic ation 6 -4 D I M E N S I O N[...]

16710.bk : 16710.TOC Page vi Tuesday, October 7, 1997 11:38 AM[...]

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 . Please read carefully the following in formation before installing the OfficeConnec t® h u b: ■ Exce ptional ca re must be t aken during inst allation an d rem [...]

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 . Suivre toutes l es instructions avec soin. Veuillez lire à fond l’informat ion suivante avant d’installer le moy eu : ■ Le soin exce ption nel doit[...]

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. Use thi s pa ge to note down y our sett ings. If you initiali ze[...]

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. It do es not req uire m anage ment to get it working. Manage ment simply al lows you to perform add itional network functions, for e xample moni toring you r net work and addi ng s ecur[...]

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. Caution Caut ions alert you to p ersona l safety risk, system damage, or [...]

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. Th e O[...]

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. T his guide helps you ge t the m os t ou t of y our hub . Netwo rk i ng T erminology A Netw ork is a c o l lection of worksta tions (for example, IBM-compatible p[...]

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. Pa ck et s ar e t he un it s of in form at ion y our w o[...]

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. It is use d on a large intern ationa l netw or k calle d the Intern et , which is composed of univers ities, government fa cilities , researc h instit utions and pri va[...]

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 create your netw ork, and h as infor mati on on: ■ The hu b ’ s LE Ds and p ort s ■ What you ne ed to crea te your netw ork ■ Whe re to site t[...]

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 .5 ” T ran scend® Quick Con figuratio n Ma[...]

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... Hub Con ne c tio ns If you h ave additi onal hub s you wan t to conn[...]

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. The four st acki ng cli ps are used for neatl y and securely stack [...]

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. When wall mounting y our hub, ens ure that it is within reach of t he pow[...]

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. If y ou do not use[...]

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. Y ou can u se ‘T ’ piec[...]

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. Rep eat for ea ch hub, as sh[...]

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 . I f t h e 1 0 B A S E - 2 ( C o a x ) p o rt i s n o t u s e d a n d i s n o t ter min [...]

2-12 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 16710.bk : CREYRNET.FRM Page 12 Tuesday, October 7, 1997 11:38 AM[...]

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. Each OfficeConne ct® Hub 8/TP M is a separate manag eable entit y , that means you ma nage ea ch Offi ceCon nect Hub 8/ TPM in div[...]

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.” on page C-1 . Why Mana ge Y o ur H ub? With mana geme nt, you ca n chan ge and vi ew the way your hub and network operates: ■ Conf igure IP info rmation for the h ub so that a n IP - based ne[...]

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. ■ Config ure the hub to sen d mess ages over[...]

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). By default, the hub autom[...]

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. Whe n you have mad e your conn ecti on and insta lled Quick C onfig[...]

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 ). Bef ore you can m anag e your hu b over the net wor k u sing IP , you m ust conne c t to it s con sole port[...]

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. Re mote Man age me nt S er vi ce Th e Off iceConne ct hub has a specia l modem d ial-out featur e wh i ch can be set up by yo u r supplier to inform th em when your h u b o r n etwork is o p[...]

3-8 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 16710.bk : ABOUTMAN.FRM Page 8 Tuesday, O ctober 7, 1997 11:38 AM[...]

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 . The s ections in th is chapter are in t he order you wo uld normally p erf orm them wh en ma nagi ng th e hub f or the[...]

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. CAUT ION : Do not install Qu ick Config Manager in the same d i[...]

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 .INI fil e: Seri alAt trib= COM1 :960 0,n, 8,1 Edit ing it to S eria l[...]

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.FRM Page 4 Tuesday, Oc tober 7, 1997 11:38 AM[...]

Quick Config Man ager Window Map 4-5 16710.bk : MANAGING.FRM Page 5 Tuesday, Oc tober 7, 1997 11:38 AM[...]

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. ■ Defi ne how re gula rly any d isplayed graphs a r[...]

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 ... Quick Con fig Mana ger d isplays either the IP Se tu p d ialog box or the Easy Se tup Option, as shown in Fi[...]

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 . Af ter r e s etti ng th e hu b, you may need to select Reset View fro m t he File me[...]

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. I f enable d , th e IP fi el ds ar e en abl ed, al lowi ng y ou[...]

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. CAUT ION : Performing a reset may cause some o f the data bein g transmitted[...]

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 ma nagi ng, with : ■ The po rts color cod ed to sh ow their condition ■ The Aler t LED reflec ting its phy sical s tate T o di splay the hub: ■ [...]

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 ). T he MI B defi nes what info rmation can be obt ained from the hu b [...]

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. sysU pTim e Shows the time t hat ha s elapse d since [...]

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. ■ View what co nditions hav e cause d the Alert LED t o ligh t. Y ou ca n conf igu[...]

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. Th e other c onditions are displa y[...]

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). Login Vi olat[...]

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. The levels are: ■ High — 80% netwo rk utiliza tion ■ Med — 50%[...]

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. T o disp lay the Activi ty/Errors graph f or a port : 1 Double-clic k on the port for wh ich you wan t to dis play the A ctivity/Err[...]

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. Run ts Sho ws the number of fr ames r ec eiv ed with oc tet co unt s le ss th an th e mi nim um l eg al si [...]

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. Any fra me s producing errors are n ot includ ed, these are shown in the Acti vity/Err ors graph , see “Mon itoring Activit y and Errors Statisti cs” on pa[...]

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. The tota l number of multi cast frame s[...]

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 . T o displ ay the Network Errors graph for a por t: 1 Double-clic k on the port for whi ch you wan t to disp lay the Netwo[...]

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. F CS errors are m ost likel y caused b y noise on the c able and should be a very small perc entage of t[...]

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. A l ate ev en t can o ccur if y ou ha ve a Local Are a Netw ork t hat is lon ger th an Ethe rnet stand ards[...]

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. Y ou ca [...]

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. Pa r ti ti on S t ate Shows wh ether t he port is on and repe ating traffic , or h as been auto matically isolated (part[...]

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. S[...]

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. Quick Con fig Mana ger displ ays the Por t Config uration di alog b ox. 3 In the Por t Config[...]

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 . Us e the f ormat xx-x x-xx -xx-x x-xx for the M AC addre ss. ■ <[...]

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. Thi s option is only val id [...]

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. 4 Cli ck on OK when the secur ity setup is c omplet e . In [...]

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. I t wo uld be v er y incon venient fo r a manager t o physic ally rein state th e network imme diat ely and i mportan t comm uni[...]

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 . However, the re is no such lin k signal over coa[...]

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. Cr ossover cabl es allow you to make a co[...]

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. Lin k St ate Shows wh ether the r esilient l ink pair is o[...]

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 . If the ma in link f a i ls, the standby [...]

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 . 4 In the Add /Edit Rem ote Poll[...]

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 . In th e Work Group Monito r panel: Ad dr es s Show [...]

4-40 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 16710.bk : MANAGING.FRM Page 40 Tuesday, Oc tober 7, 1997 11:38 AM[...]

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 . Only the additio nal man agemen t scr[...]

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. This t able gives an example of each c ompo nent, an d explai ns its u se: Componen t De scrip tion ◆ Enabled ◆ Choice Field T ext enclosed in m arkers is a list, from [...]

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. Th ese keystroke s allow y ou to mov e the c ursor a round the scree n, enter informa tion and move from one scre en to another : When you have finished entering or chan gi[...]

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. Any stac k able pr oducts, f or example 3Com’ s Su[...]

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. Main Ban ner If you ar e usin g a V T10 0 te rmina l co nnect ed ( dir ectly or through m odems) to the consol e port, yo u need to p[...]

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. The console port ’ s a utoconfigure option only operates if your terminal us [...]

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. Th e user name to use depe nds on w hich access leve l you require: At the earliest op portunity, the syste[...]

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. See “Conf[...]

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. This sc reen also provi des access to other scree ns for you to set up traps and console po rt param[...]

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 . SLIP operates wi th any valid IP addre ss. Th e default is 192.16[...]

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. Data Link Pr otocol Th is fie ld show s t he na me o f the IPX da ta lin k la[...]

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. Y ou [...]

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 . To avoid te rmin at ing th e ses sio n complet ely , ensure t hat the sett ings are cor rect and that the con[...]

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. The hub can aut omatica lly confi[...]

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 . A user at thi s level cannot cha nge the ope rating paramet ers of the hub. ■ [...]

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 . Up to three users c an co ncurre ntly ac cess t he man agem en[...]

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. No user can di rectly change another user’ s password or community st[...]

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. Figure 5-11 D elete U sers Screen Select the use rs to delete f[...]

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. If there are mu ltiple instances of th e Remote[...]

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. Mana gement Mod ule Hardw a[...]

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. Fil e N am e Ent er th e nam e of the f il[...]

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 . If th i s chapter does not so lve your pr oblem, contact y ou[...]

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 . Do not use any othe r power a dapter with the hub. Alert LE D co[...]

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 ard nu ll modem cable, a nd have the hub’ s conso le port set t o 9600 bau d (or aut oconfigur ation enabl ed), th e serial co nnect ion typ e set t[...]

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 . The T elne t manageme nt st ation ca[...]

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 . Check that th e port through w hich yo u are try ing to acces s the h ub has not bee n disab [...]

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.K . Users Only) The Of ficeConne ct® H ub 8/TP M is covered by Of tel Gener al Appro val, N S/G/12345/ J/100003, for in direct connec tion to a public telecom[...]

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.bk : DIMSNSTA.FRM Page 2 Tuesday, October 7, 1997 11:38 AM[...]

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.bk : DIMSNSTA.FRM Page 3 Tuesday, October 7, 1997 11:38 AM[...]

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.bk : DIMSNSTA.FRM Page 4 Tuesday, October 7, 1997 11:38 AM[...]

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. The Intern et then behaves lik e a virt ual net wo rk, u sin g the se [...]

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. These details are corr ect at the time of printi ng, but ma y cha nge. USA - InterNIC, Network Soluti ons Att ent ion: InterNIC Registra tion Se rvices 505 H untmar P ark Dr ive Hern don V [...]

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. Contac t: Nakayama, M as aya (MN89) Te l e p h o n e : +81 3 38 12 2111 ext2 720 e-ma il: naka yama@[...]

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.xx x.xxx.xxx to 126 .xxx.xxx. xxx (where xxx represe nts th[...]

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 . Y ou sho uld n ever need[...]

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 . Fo r the very lat est, we reco mmen d that y ou acce ss 3Co m Corp oratio n’ s Wo rld Wid e Web[...]

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. T o acce ss 3C omBBS u sing I SDN, use the f ollowin g nu mber: 408 654 2 703 3ComFacts Autom ated Fax S er vice 3Co m Co rp orat io n’ s in tera cti ve fax s er [...]

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. T o use 3C omForum, yo u need a CompuSer ve ac count . To u s e 3 C o m F o r u m :[...]

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. Many s upplie rs are aut horize d 3C o m s er vic e partners who ar e qualifie d to prov ide a varie ty of se rvi ces, incl uding networ k pl anning, insta llation, hardware ma[...]

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 3266 604 43 4 3266 3Com Eu ropean HQ 49 89 627320 3Com F ran ce 33 1 69 86 68 00 3Co m GmbH Aus tri a Czech R epublic/Slov ak Re publ ic Ger man y (Cent[...]

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. T o obt ai[...]

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 3Co m URL C-1 3ComF a cts C-2 3Co mForum C-3 A abou t network management 3-1 access le vels 5-17 manager 5-16 monit or 5-16 secure monitor 5-1 6 secur[...]

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 on 2-4 c onsol e port 3-4 , 5-13 , A-3 aut oconfi guratio n 5-1 5 changi ng the manage ment stati on’ s port 4- 3 enab ling/d isabl ing acc ess 5-16[...]

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 4-7 managin g 3-2 moni toring o ther devices 4-37 port con figura tion 4- 25 positi oning 2- 5 probl ems 6-2 resettin g 4- 11 security 4- 28 siting 2-[...]

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 fil e ser ver B-6 network 1-2 error rate 4-18 ex pandi ng C-1 glossary 1-2 loop 1-2 , 2- 8 managem ent 3-1 , 3-6 manager community str ing 5-13 operati[...]

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 nks 4-33 , 4-34 resta rt count 5-21 re turn ing pr odu cts f or re pair C-6 RJ45 1- 2 round trip 4- 39 rou nd trip tim e 5-20 rout er IP addr ess 4- 10 [...]

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 5-13 too lon g erro rs 4-24 tota l errors 4-20 TP 1-2 T ra nscen d Qu ick Con figu ration Man ager 3-1 trap 4-26 Tr a p S e t u p s c r e e n 5-12 trap [...]

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 following lengths of time from the date of purchase from 3Com or its Authorized Reseller: In tern etwo rking produ cts One yea r Netwo rk adapters Life[...]

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. T O THE FU LL EXTENT ALL OWED BY LA W , THE FOREGOI NG W ARRANTI ES AND REMEDIES ARE EX CLUSIVE AND AR E IN[...]

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. This equipment genera tes, uses and [...]

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