3Comメーカー2103R-CSDIの使用説明書/サービス説明書
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® E D G E R O U T E R M O D U L E I N S T A L L A T I O N G U I D E F O R E T H E R N E T P ar t No . 17 -00590 -3 Published August 1996.
ii 3C om Corporation ■ 5400 Bayfront Plaz a ■ Santa C la r a, Cali for nia ■ 95052-8145 ©3Com Corpora t ion, 1996. All rights reserved. No pa rt of t his docume ntation m a y be reproduced in a.
iii 3Com, Boundar y Routing, C ardBo a rd , Car dFa c ts, EtherDisk, Ethe rLink, EtherL ink II , LANp lex, LAN sentr y , L inkBuild er , NETB uilde r , NETB uilde r II, NetF ac ts, ONcore, O Nsemble, .
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v C O N T E N T S A B O U T T H I S G U I D E Int rodu c tion 9 Aud ien ce 9 How to Use T h is Guide 9 Convent ions 1 0 Re lat e d Do c um ents 12 3Co m D oc um ents 12 Cisco Doc um en ts 13 Referen c.
vi Config uring DIP Switche s 2- 8 Config uring the ONline Ca rrie r DIP Switch es 2 -8 Selec ting a Ne twor k 2 -9 Isolatin g the ONline Edge Rou te r Mod ule 2-9 Config uring the ONco re Car rier D .
vii 4 M O N I T O R I N G E D G E R O U T E R M O D U L E O P E R A T I O N Mo nitoring Ed g e Rou ter M od ule Ope ration 4-1 Showing Mod ule Configura tion and Sta tus 4 - 3 Us i ng th e S HOW MO DU.
viii B T E C H N I C A L S U P P O R T Onlin e T ec hnical Ser vices B-1 3Com Bulletin Bo ard Se r vic e B-1 Access by Analog Mod em B-2 Access by Dig ital M ode m B - 2 Wor ld W id e We b Si te B -3 .
A B O U T T H I S G U I D E Intr o duction This g uid e desc r i bes ho w to ins tall an d confi g ure a 3Com ® ONli n e ™ or ONcore ® E d ge R outer m o dul e into the 3Com ONlin e System Concen trator or ONcore Switc hing H ub.
10 A B O U T T H I S G U I D E C on vention s T able 2 and T abl e 3 l is t co nv e nt io ns use d t hr oug hou t t his gu ide . Proc e d u r e s for conf iguring Edge Route r engin e parameter s Cha .
Conventions 11 “Syn t ax ” vs. “Comman d ” When the wor d “syn tax” i s used in thi s guid e, it i n d icate s tha t the g e neral fo rm of a comman d syntax is prov i de d . You mus t evalu ate the syntax an d s upply th e appropr i a te port, path , value , addres s, or string .
12 A B O U T T H I S G U I D E Re la te d Documen ts This se c t ion provi des info rma tion on sup por ting docum entati on, incl ud ing : ■ 3Com Doc umen ts ■ Ci s c o D o c um en t s ■ Refere.
Relate d Docum ents 13 Cisco Do cume nts Cis co® C D- ROM d ocu ments d e sc ribe com ma n d s and oth er softw are -re lated infor m atio n you n eed to o perate th e Edg e R outer mo d u le. Re fe re nce Docu ment s The fol low i ng d oc um en ts s uppl y rela ted bac k g rou nd i nfor m ati on : Case, J.
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1 I N T R O D U C T I O N This ch apter provi d es an intro du c tio n to the 3Com ® Edge Ro uter m odul e. This ch apter co ntai ns the follow in g secti ons: ■ Pro d uc t O ver vi ew ■ Edge Rou.
1-2 C H A P T E R 1: I N T R O D U C T I O N Fig ure 1 -1 T ypi c a l Edge Rou t er Mo dul e Con nec t i ons The rou t e r m o d u l e run s Cisco stan dard s oftw are and ful ly intero perates with t.
Product O v e rvie w 1-3 Edg e R ou ter M od ule Arch ite c ture Each Edge R outer modul e co n s i sts o f the foll o win g co mponen t s : ■ Carrier – Provi des co nnec tio n s to o ne o f th ree 3Com sw itchin g hub prod u cts . ■ Engi n e – Provid es Ethe rnet- t o -W AN por t conn ec ti on s.
1-4 C H A P T E R 1: I N T R O D U C T I O N F igu re 1 - 2 sh ow s the arch i tec tur e of each Edge R ou ter mod ul e ty pe. Fig ure 1 -2 Edg e Rou t er M o dule A r c hitec ture ONl in e ca rrie r .
Edge Route r Modul e F eatur es 1-5 Edge R oute r Mo du le Featu res This se c tion d es cr ibe s the m ajor fea tu res of the Edge Rou te r mod ule, in cl ud i ng : ■ So ft wa re O pt io ns ■ T o.
1-6 C H A P T E R 1: I N T R O D U C T I O N T able 1-1 Soft ware Featu re Sets Fe atur e C ate go ry Fea ture S e t IP/IPX Deskt op Desktop plu s IBM E nte rpr i se LAN Suppor t IP, B ri dgin g, L AN.
Edge Route r Modul e F eatur es 1-7 T opolo g y Switc hin g Usin g top olo g y sw itch ing y ou ca n: ■ Swi tch the ONli ne Edg e Ro uter mod u le am on g any of three Eth erne t n etw or k s ( c ha.
1-8 C H A P T E R 1: I N T R O D U C T I O N Fig ure 1 -3 Ne twor k Reli ability C onfig uration IOS R outer S oft wa re Up da tes The IOS s oftw are in the Edg e Ro u ter m odul e en g ine can be up da ted by purc hasing fi e l d - upg ra d eable softw are d istri bution k its .
Edge Route r Modul e F eatur es 1-9 Y ou ca n a ls o p urc ha se a n u p gr a de kit t o upgr a de y ou r IP/ I PX , De skt op , or De sktop pl us IBM so ftwa re to a vers ion w ith an enh an ced featur e se t. Con tac t your 3Com re sel ler o r 3Co m Cus tom er S uppo r t for more infor m atio n and par t num b ers .
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2 I N S T A L L I N G T H E E D G E R O U T E R M O D U L E This ch apter co ntai ns the follow in g secti ons: ■ Ins tallati on Fl owchar t ■ P re caution ar y Proced ures ■ Qui ck In stal la t.
2-2 C H A P T E R 2: I N S T A L L I N G T H E E D G E R O U T E R M O D U L E In s tallat ion F lowchart The flow ch ar t in F igure 2 - 1 identi fie s th e steps req ui red to in sta ll and con figu re the Edge Rou te r mod ul e.
Precautionary P roce dures 2-3 Pr ecau t ionar y Pr o cedu res Elec tros tati c dis ch arg e (ESD ) can dam ag e s tatic- sen si tive de v ice s on ci rcui t boar ds.
2-4 C H A P T E R 2: I N S T A L L I N G T H E E D G E R O U T E R M O D U L E Qu ick In st allat ion fo r Un mana ged Hu bs F ol low the ge ne ral steps outl ined i n T abl e 2- 1 to ins tal l an d con fig ur e the E d ge Router m odul e in an unm anage d ONline or ONcore hub .
Quick Installati on 2-5 Qu ick In st allat ion for M anag ed Hu bs F ol low the ge ne ral steps outl ined i n T abl e 2-2 to in stal l and con fi gu re the E d ge R outer mo d ule in a managed ONlin e or ONcore hub. T able 2-2 Qui ck I nsta l la tion for Mana g e d Hu bs St ep Proce dur e Re fe r t o: 1 Unpa c k the mod ul e.
2-6 C H A P T E R 2: I N S T A L L I N G T H E E D G E R O U T E R M O D U L E Unp a c k ing Pr o cedu res T o unp a ck the E dg e Ro ut e r mo du le : 1 V e rify th at th e m odu le is the m od el you o rd ered by c hec k in g the mo de l num ber l isted on th e s i d e o f th e shippi ng car ton.
Verifying Jumper Pl ug Positions 2-7 V erifying Jumper Plug P os itions V eri fy the jum per plug p os ition s on the ONline or ONcore Edg e Router mod ule befo re proceed ing with the instal la tion proced ure. The E d ge R outer mo dule i s equi ppe d with severa l jumpe r plug s.
2-8 C H A P T E R 2: I N S T A L L I N G T H E E D G E R O U T E R M O D U L E C onfiguring D IP S witches DIP sw itch es let you selec t the back pl an e netw or k us ed b y an ONli n e or ONcore Ed ge Ro uter m odu le .
Conf i guring DIP Switch e s 2-9 F igu re 2 -2 show s the ONli n e car rier DIP swi tch locati on . Fig ure 2 -2 ON line Ca r r i e r DIP Swi t c h Locatio n Se lecti n g a N etw or k Use T abl e 2 -4 to sele c t a networ k by usi ng the DIP switc hes.
2- 10 C H A P T E R 2: I N S T A L L I N G T H E E D G E R O U T E R M O D U L E ■ Enabl i ng or Dis abl ing NVR AM Con fi g urati on ■ Selec tin g a Netwo rk F igu re 2-3 sh ow s the ONcore carrier DIP sw itch locati on.
Conf i guring DIP Switch e s 2-1 1 If th e N V S E L D I P sw itc h is : ■ ON (ena bl ed) – The Edg e Router m o du le u s es confi g urati on se ttin gs store d in its NVRA M . If NVR AM does no t contai n co nfi g ura tion set tin gs, the Edge R outer mo d ules are assig ned to the Isola te_1 netw or k.
2- 12 C H A P T E R 2: I N S T A L L I N G T H E E D G E R O U T E R M O D U L E Installing the ONl in e Edge Router Modu le This sec tion des cr ibe s how to ins tal l the ONli ne Edg e Router modu le in an ONli ne hu b.
Ins talling the ONcore Edge Route r Modu le 2-1 3 4 Usin g yo ur fin ger s, ti ghten the tw o s pring -loa ded s crew s on the front of the mod ule face plate (Figure 2 -4) .
2- 14 C H A P T E R 2: I N S T A L L I N G T H E E D G E R O U T E R M O D U L E 3 Ins er t the m od u le into the board g uid es a t the to p and bo ttom of th e slot an d slide i t into th e hu b by pres sin g firm ly at a poi nt s lig htl y below the cen ter of th e fa ce pl at e (Fig ur e 2- 5) .
Ins talling the ONcore Edge Route r Modu le 2-1 5 4 C lo se th e ej ect or s (F i gur e 2- 6) . Fig ure 2 -6 Op e ned a nd Cl o sed M odu l e Eje c tors 5 Usin g yo ur fin ger s, ti ghten the tw o s pring -loa ded s crew s on the front of the Edge R outer m o dul e facepl ate (do n ot over ti gh ten) .
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3 C O N F I G U R I N G T H E E D G E R O U T E R M O D U L E This ch apter co ntai ns the follow in g secti ons: ■ Ma nag e d Confi gura tion O v e r vie w ■ Attach i ng a Management T ermi nal .
3-2 C H A P T E R 3: C O N F I G U R I N G T H E E D G E R O U T E R M O D U L E Man a ged C onfig urat ion Over view Y ou can m a nage a n ONlin e or ONcore carrier using a netwo rk ma nage ment mo du le in st a lled in the s ame h ub .
At tach i n g a Man agement T erm inal 3-3 Usin g ON d ema nd NCS The 3Com ONd em an d ™ Ne t wor k Con trol Sy stem (NC S) is an S NMP man ag er w ith a g rap hical u s er inter face.
3-4 C H A P T E R 3: C O N F I G U R I N G T H E E D G E R O U T E R M O D U L E C onfig u ring the C arrier in a Man aged ONline Hu b T hi s s ect io n de scri bes ho w to use ne t work ma n age me nt comm a nd s t o con figu re ONli n e car ri er s instal led in an ONl i ne Sys tem Con centra tor .
Configuring the Carrier in a Mana g ed ON core Hub 3-5 C onfig u ring the C arrier in a Man a ged O Nco re Hu b T h i s section de s cribes the p ossible sour ces of ONcore ca r rier co n fi gur ati o.
3-6 C H A P T E R 3: C O N F I G U R I N G T H E E D G E R O U T E R M O D U L E Carrie r N VR A M S et tin g s The ONcore c arrier can sto r e config uratio n settin gs in its NV RAM (non -volatil e ra nd om a cces s me m or y), whi ch it can use w he n pow er in g on in ei ther a man ag ed or u nman ag e d hub.
Configuring the Carrier in a Mana g ed ON core Hub 3-7 Hot Swapp ing an ON co re M od ule Y ou can remove a m odul e from th e ONcore hub a n d ins tal l an identic al modul e in the sa me slot with ou t power ing off the hub. This is called a hot swap.
3-8 C H A P T E R 3: C O N F I G U R I N G T H E E D G E R O U T E R M O D U L E De term inin g th e Config urat ion So urce T abl e 3- 1 sho ws h ow to determ i n e the carr ier co nfig urati on sou rce . * Use the S HOW DEVICE comm and to view the DIP configuration s et ting.
Conf iguring t h e E dge Router E ngine 3-9 T o as s i g n a carri er b ack pl ane p or t to a n etwor k u sing net work mana gem en t softwa re , use the fol lowin g com man d: se t p or t slo t. po rt ne tw or k {et he rne t_ 1 . .. et he rn et _8} {i so la ted_ 1 .
3- 10 C H A P T E R 3: C O N F I G U R I N G T H E E D G E R O U T E R M O D U L E Fig ure 3 -1 Atta chin g a T e r mina l Cable to the C on sol e Port 2 Attach the DB-25 e nd of the adapter cabl e to the R S -2 32 null modem cable com ing from yo ur ter m inal .
Conf iguring t h e E dge Router E ngine 3-1 1 Con so le a nd au xili ar y po rt s peci fi catio ns are provi d ed in T abl e 3-2 and T abl e 3- 3, res pec tivel y. Mi ni- DI N co nne c t or p i nou ts a r e pr o vid ed i n A p pe ndix A. The Edg e Router mo d ule is sh ipped au toc onfi g ure d fo r conne c t i on to a network running NetW are®.
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4 M O N I T O R I N G E D G E R O U T E R M O D U L E O P E R A T I O N This ch apter co ntai ns the follow in g secti ons: ■ Mo n i torin g Ed g e Ro uter Mod u l e O peratio n ■ Show i ng M od u.
4-2 C H A P T E R 4: M O N I T O R I N G E D G E R O U T E R M O D U L E O P E R A T I O N Fig ure 4 -1 E dge Ro ut er Modu le LE Ds RTR S EO Reset CONSOLE AUX S0 ACT S1 ACT 2103R-CS Router Status Mod.
Showing Module Configuration and Status 4-3 E ach L ED is de sc rib ed i n T a bl e 4- 1. S h owing Modu le C onfig urat ion and Status This se c tion d es cr ibe s NM M com m an ds that show m od ule con fig u rati on and status.
4-4 C H A P T E R 4: M O N I T O R I N G E D G E R O U T E R M O D U L E O P E R A T I O N Using the SH OW MODUL E C omman d The S HO W MO D ULE com man d dis play s infor m a tion abo ut a spe ci fic mo dule.
Showing Module Configuration and Status 4-5 The fol lowing comm a nd di splays verbo se infor matio n for a n E d g e Rou te r mod ul e ins tal le d in s lo t 6 of an O Nline hub : O Nline> s how mod ule 6 verbo se S lot Module Ver sion Net work Gene ral Inf o rma tion - ---- --- ------ ------ --- ---- - -------- --- - 0 6 210 3R- CSD v1.
4-6 C H A P T E R 4: M O N I T O R I N G E D G E R O U T E R M O D U L E O P E R A T I O N Using the SH OW PORT C omm and Th e SHOW PORT c omm and di spla ys i nf orma t ion a bou t a s i ngl e port or a l l por ts. The syn ta x for th e SHOW PORT com man d i s : SH OW P ORT sl ot .
Showing Module Configuration and Status 4-7 No_ V erbo se is the defau lt op tion for th e SH O W POR T com m an d. Us e th e No_ V e rbo se opti on to dis pl ay s um m ar y i nfor m ati on for th e c ar ri er por ts.
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5 T R O U B L E S H O O T I N G This ch apter provi d es ha rdware troubl es h ooti ng in for mati on y ou ca n us e if the Ed ge R o uter mod u le fai ls to oper ate corre c tly . I f af ter revi ewi ng the infor matio n in th is ch apter , you ca nnot cor rec t the probl em, co ntac t you r 3Com repres en tative for fur ther ass ista nce.
5-2 C H A P T E R 5: T R O U B L E S H O O T I N G T r o ublesho oting S tar tup Pr o b lems This se cti on de scri bes how to troubl es ho ot star tup proble m s by mon i tori ng the LE Ds on the Edge R outer m o dul e.
Trouble shootin g Network Conn e c tivity Problems 5-3 T r o ublesho oting Network C onnec tivity Pr oblems If th e Edge Ro uter mod ule does not appe ar to be routin g traffic prop er ly on the netw or k, it may indi cat e that ther e is no connec ti on to the net work.
5-4 C H A P T E R 5: T R O U B L E S H O O T I N G T r o ublesho oting WA N C onnec tivity Pr oblems If you suspec t tha t the Edge R outer mo dul e has lost W AN con ne c tivity , per form on e or mo re of the foll ow ing troubl es ho oti ng ac tio ns: ■ V eri fy th at you have the cor rec t cab le for you r config u ratio n.
Corre cting O perating Ma lfunctions 5-5 C orrecting Op eratin g Malfu nc tions T abl e 5- 1 lists the s ymptom s of ope ratin g m alfu nc ti on s for the Edg e R ou te r mod ul e an d sh ow s poss ible caus es an d corr ec tive acti on s for thes e mal fun cti on s.
5-6 C H A P T E R 5: T R O U B L E S H O O T I N G The termin a l f a ils to respo nd to comma n d s enter ed a t the k eyboar d. The te rmina l is n ot rece ivi ng comm ands . P owe r o ff the t e rmina l, w ait 3 0 se con ds, a nd th en po wer i t on ag ai n.
A S P E C I F I C A T I O N S This appe ndi x con tain s the h ardw are speci fi cations for th e 3 Com Edg e Router m o du le i n the fol l owi ng sec ti on s: ■ G ene ral Sp eci fication s ■ Ele.
A-2 A P P E N D I X A: S P E C I F I C A T I O N S Gen er al Specif icatio ns Electrical Specif icatio ns The fol lowi ng tabl e lists the bas i c power requi rem e nts by mod ul e type. * ONco re po wer requ iremen ts are based on an Edg e Ro ute r engi n e inst alled in bay 1 o f the O Ncore c ar ri e r .
Environm ental Spec i f ications A- 3 Environmental Specif icatio ns T abl e A- 4 lists the BT U /hr cal cu lati on s for the Edg e R o ute r mod ule i nstal le d in eac h hub ty pe.
A-4 A P P E N D I X A: S P E C I F I C A T I O N S Hub Ca p acities This se c t ion provi des gu ideli nes for in stal lin g Edge Ro uter m odu l e s in ONli ne or O Nc ore h ubs.
Cable Pinou ts A- 5 F o ll o w t he gui del in es in T a b le A- 8 w hen in sta ll ing ON lin e Ed ge Rou t er mod ul es in an ON core 1 0 -slo t or 1 7-s lo t hub. . C ab le Pino uts Use the in f o rma tion in thi s s ecti on to ensu re that th e cables and co n n ecti n g ha rdwa re m eet requi rem e nts.
A-6 A P P E N D I X A: S P E C I F I C A T I O N S T hi s s ect io n de scri bes : ■ Con sole P o rt Pi nouts ■ Au xil i a r y P o r t Pi n o ut s ■ DB -25 Nul l M od em Ca ble ■ Se ri al P o .
Cable Pinou ts A- 7 F igu re A- 1 i d en tifi es the pi n s th at th e 8 -p in m ini-D IN por t uses. F ig ur e A-1 Min i-DI N Se rial Por t P in outs M ini- D IN to D B-2 5 Mo de m Cable T abl e A-1 0 lis ts con sole por t p i n outs fo r t he 3Com Op enHub ™ Ma nage ment Cabl e (mi n i-DI N to D B- 25 mo de m a d apter ca ble ).
A-8 A P P E N D I X A: S P E C I F I C A T I O N S Auxiliar y P or t Pin ou ts T abl e A- 11 lis ts th e cab le pin outs for th e aux ilia r y por t on the Edg e Rou t er mo dule.
Cable Pinou ts A- 9 DB-25 Nu ll Modem Ca ble Use a n ul l mod e m ca ble to conne ct the Edg e R ou ter mo d u le to an othe r DT E devi ce (for exam p le, a dum b term i nal ).
A- 10 A P P E N D I X A: S P E C I F I C A T I O N S EIA-53 0 DT E S y nchron ous Se rial Cab le Pino uts T abl e A- 13 l ists pin outs for E IA-5 3 0 D TE syn ch ron ous se ri al cabl e (P ar t Nu m ber E R M5 30- CAB) .
Cable Pinou ts A-1 1 RS-232 DTE and DCE Seria l Cable Pinouts T abl e A - 14 lists pin outs for : ■ RS- 232 DTE s ynch ron ou s s er ial ca ble (Par t Nu mber E R M2 3 2-C AB) ■ RS-2 32 DC E syn c.
A- 12 A P P E N D I X A: S P E C I F I C A T I O N S RS-449 DTE and DCE Seria l Cable Pinouts T abl e A - 15 lists pin outs for : ■ RS- 449 DTE s ynch ron ou s s er ial ca ble (Par t Nu mber E R M4 .
Cable Pinou ts A-1 3 V .35 DTE and DCE S erial Cable Pino ut s T abl e A - 16 lists pin outs for : ■ V .35 DTE s ynch ron ous serial cabl e (Par t Num b er ERM V3 5- C AB ) ■ V .35 DCE s ynch ron ous serial cabl e (Par t Num be r E RF V3 5-C AB) T able A- 16 V .
A- 14 A P P E N D I X A: S P E C I F I C A T I O N S X.21 DTE an d DC E Seria l Cable Pinout s T abl e A - 17 lists pin outs for : ■ X.2 1 DTE s yn ch ron ous s eri al cabl e (Par t Num b e r ERM X2 1- C AB) ■ X-2 1 DC E syn ch ron ou s ser ia l cable (Par t Nu mber E RF X2 1-C AB ) T able A- 17 X.
B T E C H N I C A L S U P P O R T 3Com provid e s ea sy acce ss to techn ical s upp or t inform ati on throu g h a variety of s er vices. This a ppen dix c ontain s th e followi n g s ectio ns: ■ On.
B-2 A P P E N D I X B: T E C H N I C A L S U P P O R T Acce ss by An a lo g Mo de m T o reach the ser vi ce by mo dem , set you r m odem to 8 data bi ts, n o par it y , an d 1 stop bi t.
Onl i ne Te ch ni cal Ser vi ce s B- 3 W or ld Wid e W eb S ite Access the lates t net work ing inform ation on th e 3Com W or l d Wide Web site by en teri ng ou r UR L into y our Intern et brow s er : h ttp://ww w.
B-4 A P P E N D I X B: T E C H N I C A L S U P P O R T L o cal a cc ess numb er s ar e a v a ila b le wi thi n th e fol lowi ng co u nt rie s: Sup po r t F rom Y o u r Net work Supplier If add iti on al a ssi stan ce i s requ ire d, contact yo ur netw or k su ppl ie r .
Support From 3Com Corporation B- 5 Sup po r t F rom 3Com C orp orat io n If you a re un abl e to re cei ve su ppor t from you r ne two rk s up pli er , t e ch nical suppor t contrac ts are a vaila ble from 3Com . I n t h e U . S. an d C an a da, ca ll (8 00) 87 6- 32 66 for cus tom er s er vice.
B-6 A P P E N D I X B: T E C H N I C A L S U P P O R T A ccessing the 3C om ISD MIB The 3Com Ma na gem ent Info rmati on Base (MIB ) for th e Integrated S ystem s Di vis ion (ISD) de sc ribes com m an d s that ena ble you to manag e 3 Com SNM P-b a sed pro du c ts.
I N D E X 1 I N D E X Numerics 3Com B ulletin B oard Serv ice (3ComB BS) B-1 3C om sales offic es B-5 3C omF acts B-3 3ComF orum B- 3 A Audien ce o f Manua l 9 Aux ilia r y por t pinouts A-8 specifica.
2 I N D E X F F aceplate 2-13 F ax ser vice. Se e 3ComF a ct s FCC notice ii F irm ware upgra ding 1-8 Flo wcha r t ins talla tion 2-2 F ront panel LEDs 4-1 H Hardwa r e spe cifications A-1 Hot swa pp.
I N D E X 3 R Return ing products for repair B-5 Rou ter (RTR ) L ED 5-2 Rou ter problems troubles hootin g 5-2 Router So ftware Support Ser vi ce 1-8 RS-232 DTE/ DCE cable pi n outs A- 11 RS-449 DTE/.
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LIMITED W AR RANTY HAR DW ARE: 3Com warrants its ha r d ware products to b e free from d efect s in workmanship and m at erials, under normal use and service, for the following lengths of time from t .
GOVERN ING L A W: This Limit ed Warranty shall be govern ed by t he laws o f the state of California. 3Com Cor p oration 5400 Bayfront P laza Santa Clara , CA 9505 2-8145 (4 08) 764-5000 3/18 /96.
デバイス3Com 2103R-CSDIの購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
3Com 2103R-CSDIをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこには3Com 2103R-CSDIの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。3Com 2103R-CSDIの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。3Com 2103R-CSDIで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
3Com 2103R-CSDIを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又は3Com 2103R-CSDIの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、3Com 2103R-CSDIに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわち3Com 2103R-CSDIデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
