Manuale d’uso / di manutenzione del prodotto OfficeConnect 3CRWDR100B-72 del fabbricante 3Com
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http://www.3com.com/ Part No. DU A100 A-72AAA01 Rev . 01 Publ ished Se ptemb er 2004 Of fi ceConnect ADSL W ire l ess 1 1g Fir ew all Route r User Gui d e 3CRWDR100A -72 3CRWDR100B-72 3CRWDR100U -72.
3C om Corporatio n 35 0 Campu s Drive, Mar lboro ugh, MA USA 0175 2-3064 Copy right © 20 04, 3C om C orpor ation. Al l right s reserved. N o pa rt of thi s docu mentat ion may be reproduced in any f .
C ONTEN TS A BOU T T HIS G UIDE Naming C onve ntion 7 Conventions 8 Feedback about this User Gui d e 8 Related Doc umentation 9 1 I NTR O DUC ING THE R OUTER Of ficeConnect A DSL W ireless 11g F ir ew.
4 R UNNIN G THE S ETUP W IZARD Accessing the Setup W izard 27 Setup W i zar d - Conn ection T ype 2 9 5 R OUT E R C ONF IGUR ATION Navigating T hr oug h the Router Confi guration Pages 39 Main Menu 39.
Upgrade 7 4 Admi n Passw ord 75 T ime and Ti me Zone 76 Status a nd Log s 77 ADSL Status 7 7 Log s 7 7 6 T ROUBLESHOO TING Basic C onnection Che cks 79 Browsing to t h e Router C on figuration Scr een.
C S AFETY I NFORMA TION D E ND U SER S OFTWA R E L ICENSE A G R EEMEN T E O BTAINI NG S U PPORT FOR YOUR P RODUCT Register Y our Product 99 Purc h ase V alue-Adde d S erv ic e s 99 T r oubl eshoot Onl.
A BOUT T HI S G UIDE This guid e descr ibes ho w to i nstall and co nf igure the OfficeC onne ct ADS L W ireless 1 1g Fi r ew all Router ( 3CR WD 100x-7 2).
8 A BO UT T HIS G UI D E Con ventions Ta b l e 1 and Ta b l e 2 list conventi o ns that ar e used thr oughout this guid e. F e edba ck abou t this User Gu ide Y our suggest ions ar e ver y impor tant t o us. They will h el p make our docum en tati on m ore usef ul to yo u.
Convent ions 9 Exampl e: ■ OfficeC onne ct ADS L W ireless 11 g Firewal l Rou ter U s er Gui de ■ Part Number DUA 100A-72AAA01 ■ Page 24 Do not u se this e- m ai l addr ess fo r te chnical support q u est ion s. For info rma tion a bout c onta ctin g T echni cal S upp ort, please r efer to Ap pe ndix C .
10 A BO UT T HIS G UI D E.
1 I NTR OD UCING THE R OUTE R W elcome to th e world of netwo rking with 3Com ® . I n the m ode r n business en vironme nt, co mm unica tion a n d shar ing in forma tion i s c rucia l.
12 C HAPTER 1: I NTRODUCING THE R OUTER Figure 1 Example Net work Without a Router When you use the Router in your network ( Fi gu r e 2 ), it bec omes you r co nnecti on to the In tern et.
Rou ter Ad vantage s 13 Rou ter Ad vant ages The adva n t ages of the Ro uter i n clu de: ■ Shared I nter net con necti on for both wired and wi reless c om pute rs ■ High sp ee d 802.
14 C HAPTER 1: I NTRODUCING THE R OUTER Min imu m System and Co mp onent Requirement s Y o ur Rou ter requires that t he c omput er(s) and c ompone n ts in you r net work b e co nfig ured w ith a t le.
Rear P anel 15 3 On line L ED Green If this LED is on, y ou r u ser name/p assw ord ha s been a uthe ntica te d successfully with your ISP . 4 Wir eless LAN (WLAN) St atus LED Green I f the LED is on it indicates that wir eless networking is enable d.
16 C HAPTER 1: I NTRODUCING THE R OUTER 7A D S L P o r t Us in g t he RJ 11 ca ble pro vi ded, you sh oul d co nne ct yo ur Ro ut er t o the telep ho ne so c ket vi a a spli tter . 8 Pow er Ad apter So cket On ly use t he p ower ada pter t hat is su pplie d wi th t his Rou ter .
2 H A R DWAR E I NSTALLAT ION Introduction Thi s ch apter will g uide yo u throu gh a b asic i nstalla tion of the Rou ter , in cl u d in g: ■ Connec ting th e Router to the Intern et. ■ Connec ting the Rou ter to you r n etwo rk. ■ Sett ing up yo ur co mpu ters fo r n etwo rking w ith t he Ro ut er .
18 C HAPTER 2: H ARDWARE I NSTALLATION When posit ioni ng you r R oute r , ensure: ■ It is ou t of direct sunl ight a nd aw ay fr o m sources of hea t. ■ Cabl ing is away f ro m power l ines, fluor escent l i ghti ng fi xture s, and sources of electr ical noise such a s ra dios, tr ansmit ters a nd broadba nd amplif iers.
Co nnecti ng the Ro uter 19 Figure 5 Connecting the Rout er 1 Run the provide d teleph one ca ble fr om the wa ll jack p rovidi ng ADSL servic e to th e AD SL port on your ADS L Ro uter . W hen i nser ting a n ADSL RJ-1 1 plug, be sure th e tab on t he plug cl icks into position to ensure tha t i t is pr o per ly seated .
20 C HAPTER 2: H ARDWARE I NSTALLATION Figure 6 Installing wi t h a spli tter.
Co nnecti ng the Ro uter 21 Figure 7 Installing wi t hout a spli tter Y o u h ave now co mpleted th e ha rdware instal lation of you r Rout er . Next you n eed to se t up your comp uters so that they ca n make us e of the Rou ter to c o mm uni ca t e w i th th e In te r n e t.
22 C HAPTER 2: H ARDWARE I NSTALLATION.
3 S E TTI NG U P Y OUR C OM PUTE RS The Ro ut er has the ab ility to dyna mical ly all ocat e net wor k addresse s to the compu ter s on you r networ k, us in g DHC P . Ho wever , you r com put ers need to be conf igu r ed corr ectly fo r thi s to t ake plac e.
24 C HAPTER 3: S ETTING U P Y OUR C O MPUTERS Figure 8 Local Ar ea Pr operti es Sc reen 6 Ensu re that the op tions Obtai n an IP Addres s automatic ally , an d Ob ta in DNS s erver ad dress auto matic all y a re both se lected as shown in Fi gure 9 .
Ob tain i ng an IP Add ress Aut o mati ca lly 25 Win dows XP 1 From th e W i ndow s Start menu , select Contro l Panel . 2 Click on Net work and Int ernet Connect ion s . 3 Click on the Network Connec tions icon. 4 Dou ble click on LAN or High Sp eed C onn ection icon.
26 C HAPTER 3: S ETTING U P Y OUR C O MPUTERS Dis abl ing PP PoE and P PTP Client So ft wa re I f you have PPPoE c lient softwar e insta lled on your c omputer , you will n ee d t o di sa ble it. T o do t his : 1 From th e W i ndow s Start menu , select Sett ings > Cont rol Panel .
4 R U NNING THE S ETUP W IZ ARD Ac cessin g the S etup Wi zar d The R out er se tup program i s Web- based, w hich mean s t hat i t is a cce ssed through yo ur Web browser (Netsca pe Na vig ator 4. 7 or hi ghe r , I nter n et Explorer 5.0 or highe r , or M ozi lla 1.
28 C HAPTER 4: R UNNING THE S ETUP W IZA RD Figure 12 Rout e r Login Scr een 5 When you hav e l o gged in ei the r: ■ The Statu s scre en will appea r ( Fi gur e 13 ). Select Setup Wiza rd fr om th e me nu . or ■ If y ou r Rou te r has not bee n c o nf igur ed bef or e, the W iz ar d w il l la un ch auto mati cally (r efer t o Figu re 14 ).
Acces sing t h e Set up Wizar d 29 Setup Wiz ard - Conn ecti on T ype Figure 14 Connection T ype Scre en The Co nnec ti on T ype scr een all o ws y ou to set u p the Rout er f or the ty p e of Inte rne t con nect ion you have . Befo re set ting up y our con necti on type, have your ac cou nt in form ati on from yo ur ISP ready .
30 C HAPTER 4: R UNNING THE S ETUP W IZA RD PP Po E Mode Figure 15 PPPoE Scr een T o setu p th e router fo r us e with a PPP over Et h ernet (PPPo E) connect ion, u se the fol low ing pr oc edur e: 1 Ente r your PPP ov er Ethernet u ser name in t he Username tex t box .
Acces sing t h e Set up Wizar d 31 Figure 16 W ireless Setti ngs Screen 7 Set th e W ir eles s Chan nel you want to use fr o m the Chan nel drop-down li st .
32 C HAPTER 4: R UNNING THE S ETUP W IZA RD 3 Re-t y pe y o ur PP P o ver A TM p asswo rd i n the Re type Pa sswo rd text bo x. 4 Ente r y ou r VPI and VCI in format ion in t h e VP I/VCI tex t b oxe s. 5 Sel ect the en c apsu lation typ e (LLC or V C M UX) in the Encapsulat ion drop-do wn l ist.
Acces sing t h e Set up Wizar d 33 Figure 19 Br i dged Mode Conf i guration Scr een 1 Ente r y ou r VPI and VCI in format ion in t h e VP I/VCI tex t b oxe s. 2 Sel ect the en c apsu lation typ e (LLC or V C M UX) in the E nca psulation drop-do wn l ist.
34 C HAPTER 4: R UNNING THE S ETUP W IZA RD Ro uti ng Mode ov er A TM (RFC 1483 Ro uted Mode ) T o set up the R outer for u se w ith an RFC 148 3 routed c onn ect ion: Figure 21 Rout i ng M ode Scr een 1 Ente r your Inte r net I P ad dr ess in the WAN I P text bo x.
Acces sing t h e Set up Wizar d 35 Figure 22 W ireless Setti ngs Screen 8 Set th e W ir eles s Chan nel you want to use fr o m the Chan nel drop-down li st .
36 C HAPTER 4: R UNNING THE S ETUP W IZA RD 4 Ente r the defau lt rout er in the De f a ul t G ate w a y tex t b ox. 5 Ente r the DNS addres s in th e DNS te xt bo x. 6 Ente r y ou r VPI and VCI in format ion in t h e VP I/VCI tex t b oxe s. 7 Sel ect the en c apsu lation typ e (LLC or V C M UX) in the Encapsulat ion drop-do wn l ist.
Acces sing t h e Set up Wizar d 37 Co nfi gura ti on Summa ry Figure 25 C onfigur ation S ummary Scre en When you comp lete the Setup Wizard , a con f igurat io n su mmary will displa y . Verify the co nfigur ation i nfor mat ion o f the R out er an d the n c lick Apply to sa ve y our se ttings.
38 C HAPTER 4: R UNNING THE S ETUP W IZA RD.
5 R OUTER C ON FIGU RATION Nav igating Thr o ugh the Router Con fi g uration Pa ge s Th i s ch ap te r d e sc ri be s al l th e sc ree n s a va i la bl e thro ugh th e Rou ter conf igurati o n pages, and is pr ovid ed as a ref erenc e.
40 C HAPTER 5: R OUTER C O N FI GU RA TI ON Stat us Figure 26 Stat us Scr een Ther e ar e two b utt o ns o n thi s scr een - Conne ct and Di sconne ct . T hese butt ons all ow y ou to m a nuall y conn ect or di sconne ct y our router fr om your I SP’ s service.
LAN Setup 41 The Route r will also pr ovide you wi th a list o f all cl ient computers conn ected to the net work. LAN Se ttings Figure 27 LAN Setti ngs Scre en The L A N Set tings s cre en is used to specify t he LAN IP addres s of y our Rou ter , a nd to co nfi gu re the D H CP se r ve r .
42 C HAPTER 5: R OUTER C O N FI GU RA TI ON DH CP C lie nts List The D HCP Clien ts List p ro vid es deta ils on t he device s that have r eceiv ed I P addr esses fr o m the Rou ter . The lis t is onl y creat ed when the Router is set up as a DHCP server .
Wire less S e tt in gs 43 Wir ele ss Setti ngs From t hese pag es yo u c an c onfigure t he se tting s for wireless co nne ction s. Figure 29 W ireless Setti ngs Screen This scree n all ows y ou to e n able or disa ble the w ireless sectio n of y our LAN.
44 C HAPTER 5: R OUTER C O N FI GU RA TI ON A fea ture o f many wir eless network ad ap ters is tha t a computer's SSID can be se t to ANY , w hich means i t look s ra ndom ly for any existing wir eless netwo rk. The av ailable net works ar e then di sp l ayed in a sit e survey , a nd your comp ut er can select a netwo rk.
Wire less S e tt in gs 45 Di sabled In thi s mo de, wireless t ransmi ssions wil l not be enc rypte d, an d will b e visibl e to e veryon e. How ev er , when se tting up o r de bug ging wirel ess net works it is of ten use ful to use t his se curity mode .
46 C HAPTER 5: R OUTER C O N FI GU RA TI ON 128 -bit WEP Figure 33 128- bi t WEP Scr een WEP is t he basic mechani sm to t ransmit your d ata secu rely o ver the wireless net wor k. M atchi ng en crypt ion ke ys mu st b e setup on you r Rou ter and w ir ele ss clien t de vices t o u se W EP .
Wire less S e tt in gs 47 64-b it WEP Figure 34 64- bi t WEP Scr een WEP is t he basic mechani sm to t ransmit your d ata secu rely o ver the wireless net wor k. M atching e n crypti on key s mu st be setup on you r Rou ter and w ir ele ss clien t de vices t o u se W EP .
48 C HAPTER 5: R OUTER C O N FI GU RA TI ON WP A (w ith R ADIU S Se rver) Figure 35 W P A (wit h RADIUS Server) S c r een WP A (W iFi Pr otected Access) pro vides dynamic key changes and co n sti t ut es th e b es t s ec ur it y s ol uti o n.
Wire less S e tt in gs 49 W ir ele ss WD S Settin gs Figure 36 W irele s s WDS S ettings Scr een The Route r supports WDS (W i reless Dist ribution Sy st em). WDS enables one o r more A cce ss Point s to rebroadc as t r ec eived signal s to e xtend ran ge and reach, t hou gh thi s ca n affect t he o verall through put of d ata.
50 C HAPTER 5: R OUTER C O N FI GU RA TI ON In ternet Sett ings From th ese pages y ou c an co nf igure th e settin gs for you r DS L co nnec tion . Conn ecti on T ype Figure 37 C onnect ion T ype Scre en The C onne ction T ype scree n is use d to c onfi gure the pa ram eter s for y our DSL con n ecti o n.
Inte rn et S etti ng s 51 PPP oE Figure 38 PPPoE Set tings Scr een 1 Ente r the User Name assi gne d to yo u b y y our IS P in th e User Name fiel d. 2 Enter t he P assword assi gne d to y ou b y your ISP in the Passwor d fi eld. Re- enter yo ur passw ord in th e Re type P asswor d fiel d .
52 C HAPTER 5: R OUTER C O N FI GU RA TI ON 8 If you w an t your R oute r to au tom atical ly d isconn ect from the Inter ne t auto mati c al ly after a perio d of inac ti vity , spec ify a time in the Idle Ti m e (Mi nute s) fi eld. Ente r a valu e of 0 to d isab le this time o ut.
Inte rn et S etti ng s 53 6 I f you wa n t you r R outer to connec t to th e Int er net every ti m e a PC needs to acce ss i t , chec k the Dial on Demand ch ec kbox . If this b ox is n ot ch ecke d, then you w ill hav e to manu ally con nect a nd discon nect using the bu ttons on the Home Sc reen (see p age 39 ).
54 C HAPTER 5: R OUTER C O N FI GU RA TI ON Ro uti ng Mode ov er A TM (RFC 1483 Ro uted Mode ) Figure 41 Rout i ng M ode over A TM Scr een 1 Ente r the IP add ress, Su bnet Mas k and Defau lt Gateway in for mation provid ed by yo ur ISP i nto t he IP address , Subne t Ma sk an d ISP D efa ult Gat ew ay field s.
Inte rn et S etti ng s 55 Dy nam ic/Fix ed IP i n 1 483 B rid ge Mo d e (For M ult iple PC s) Figure 42 D ynamic /Fixed IP for Bridge Mode S creen 1 Check t he Get WAN IP B y DC HP fi eld if your I SP allocates IP addr esses using DHCP . 2 Ente r your Inte r net I P ad dr ess i n the WAN I P t ext bo x.
56 C HAPTER 5: R OUTER C O N FI GU RA TI ON If your ISP provid ed yo u with spec ific DNS ad dresses to use, ent er them i nto the appr opriate fiel ds on this s cre en and cli c k App ly . Ma ny ISP s do not requi re yo u to e nte r this i nfor mat ion in to t he Ro ute r .
Rou ting 57 Rou ti n g From th ese pages y ou can c onfi gure routing param e ters. Y our Ro uter supp orts the foll owing ro utin g func tion ality: ■ Stati c Routing ■ R IP ( Rou ti ng I nfo rm .
58 C HAPTER 5: R OUTER C O N FI GU RA TI ON RIP Para meters F igure 46 RIP Param eter Scr een Y o u c an set up R IP in depend en tly on b ot h LA N and W A N interfac es. 1 Sel ect the R IP M ode Enable rad io bu tton. 2 Sel ect th e appr o pri ate radi o button to enable or disa ble Auto Summary .
Fire wall 59 7 In t h e Authen ticati o n Co de fiel d , en ter the passwo rd that is r eq uir ed i f th e Passw ord op tion has bee n sele cted. 8 Cli ck Apply . Ro uti ng T a b le The Ro ut ing T abl e screen d ispl ays det ails for the de fault rou ting use d b y yo ur Router and an y routing crea ted using Sta tic Routing or RIP .
60 C HAPTER 5: R OUTER C O N FI GU RA TI ON your networ k completely v uln erabl e to hacker att ac ks, but 3Com re commends that you tur n leave th e fir ewall enabled when ever possib le. 1 Enable or Disable the Fi rewall a s required by sel ect ing the appro priat e rad io butt on.
Fire wall 61 I f your appl icatio n is not liste d, you will need to chec k with the appli catio n v endor t o det erm ine which por ts ne ed to b e con figured .
62 C HAPTER 5: R OUTER C O N FI GU RA TI ON T o en t er s ett in gs : 1 Cli ck Add , or Edit if you want to ed i t an exi sting r ecord. 2 Ente r the IP addr ess in th e sp a ce pr ovi ded for t he inte r nal machi n e. 3 Ent er the port type (T C P , U DP , or bo th TC P and U D P).
Fire wall 63 T o con tro l acce ss to spec ifi c Inte r net ser v i c es: 1 Click on Add PC. A scr een si m i lar to that shown below wil l app ea r Figure 52 Add PC Scree n 2 Ent er a desc ripti on for t he f ilter y ou are def ining i n the Client PC Descript ion field .
64 C HAPTER 5: R OUTER C O N FI GU RA TI ON URL Bloc king Figure 53 URL Blocking Scr een T o c onfigur e the UR L Block ing feat u re , use the ta b le on t h e URL Blocki n g page t o sp ecify th e w ebsites ( ww w .so mes ite.com ) a nd/or keyw ords you wa nt to filter on you r netwo rk.
Fire wall 65 Sc he du le Ru l e Figure 54 Schedule Rule S creen The Route r c a n be configur ed to r estrict ac c ess t o the Int er net, e-mai l or other net work servic es at speci fic days an d times.
66 C HAPTER 5: R OUTER C O N FI GU RA TI ON 2 Ente r a name and commen t for the sche dule r ule in the Na me a nd Com m ent field s . 3 Spec ify th e schedu le rules f or the r equir ed days and t imes - note th at all times shou ld be i n 24 ho ur form at.
Fire wall 67 ■ Cop y the M AC address by selecting the name o f the comp ute r from th e DHCP C l ients List , and then in th e MAC Add ress Filtering List click Copy T o .
68 C HAPTER 5: R OUTER C O N FI GU RA TI ON Adva nc ed From th e Ad va nced screen, y ou can c onf igure: ■ NA T (Network Ad dre ss T ranslation) ■ Univ ersal P lug and Play ■ W AN P ing Bloc ki.
Fire wall 69 Univ ersa l Plu g an d Pla y Univ ersal Plug and Pl ay i s a tec h nolo gy that o ffe rs seamless operati on of v oic e m ess ag in g, v id eo me ss ag in g, g ame s, a nd othe r a ppl ica ti on s t hat ar e U niv ersa l Plug and Play compli an t.
70 C HAPTER 5: R OUTER C O N FI GU RA TI ON DD NS Th e R oute r p rov id es a li st of dy na mic D NS pr ov ide rs f or you t o c hoo se fr om . Dynamic Doma i n Name Ser ver (DDNS) enables you to map a stati c domain name to a dynamic IP addr ess. The Router support s t wo DDNS pr oviders, TZO .
SNMP 71 3 In t h e P asswor d te xt box , ent er the a c count passw ord. 4 Cli ck Apply to make this ser v ice ac tive. SN MP S NM P (Sim ple Ne tw ork Man ageme nt Prot ocol) allows remot e manag em ent of yo ur rout er by a PC t hat ha s an SN MP ma nagem e nt agent insta lled.
72 C HAPTER 5: R OUTER C O N FI GU RA TI ON SNM P T rap Figure 61 SNMP T r ap Scr een Y o u c an co nfig ure your r o uter t o send status m essa ges t o the SNM P manage m ent agen t if a pr oblem o ccur s on th e network.
Sy stem T ools 73 Sy stem T o ols Thes e page s let s yo u man age different pa rame ters of the router an d per form certai n adm inistr ative f unc tions. Rest art Rou ter Figure 62 Restart Router Scr een Som etimes it may be nec essa ry to re sta rt (or r eboot) the Router .
74 C HAPTER 5: R OUTER C O N FI GU RA TI ON Ba ck up /R est ore Settin gs Figure 64 Backup/Restor e Settings Sc reen Y o u c an sa ve y our c urrent c onfi gura tion by cl ickin g Save in Backup Setti ngs . Saving your conf igurat io n wi ll allow you t o r estore it later if your setti ngs are lost or ch an ged.
Sy stem T ools 75 Pl ease do wnload t h e fir m war e file t o your PC first, and th en c lick Br owse an d s ele c t th e fi r mw a re f ile . C l ic k Up grade to uplo ad the firm ware to the Rou ter . Admin P asswor d F igure 66 A dm i n Pa ss w o rd S cre en The Ro ut er ship s with a defaul t passw ord of admin .
76 C HAPTER 5: R OUTER C O N FI GU RA TI ON Ti me an d Tim e Zone F igure 67 T ime and Time Z one scre en The Rout er keeps ti m e by connecti n g to a Simple Netwo rk Time Pr otocol (SNTP) server . This al lows the Router to syn chro n ize t h e system clock to the I n ternet.
Stat us and Logs 77 Status a nd Lo gs Y ou can use th e Status Scr een to view ver sion numbers f o r your r ou t er’ s softwa re and hardwa re a nd che ck the sta tus of co nnec tions to W A N, LAN and W LAN inter fac es.
78 C HAPTER 5: R OUTER C O N FI GU RA TI ON ■ Cli ck Cle ar to clear the lo g (n ote th at all curr ent entri es will b e erased). ■ Cli ck Save to save the log to disk in a t ext file . Wh en prom pte d for a l ocati o n to s ave the fil e t o, spec ify a filen am e and lo c at ion, and t hen clic k OK .
6 T R OUBLE SHOOTI NG Basic Con nection Check s ■ Check that th e Ro ute r is connect ed to yo u r compu ters and to the telepho ne line , and that a ll th e eq uipm ent is pow ered on . Ch eck that the LAN Stat u s a nd SYNC LEDs o n the R o ute r are il lum i n ated, and that any corres pondi ng L EDs on th e NIC are also illum inated.
80 C HAPTER 6: T ROUBLESHOOTING ■ If you c anno t b rowse to the Ro uter , us e the wini pcfg utility in W indo w s 95 /98/M E to verif y tha t yo ur com pute r has rece ived the co rrect addres s infor mat ion f r o m the R outer . From the St a r t m enu, ch oose Ru n and th en enter win ipcfg .
Wirel ess Ne t wor king 81 4 Pr ess and hold the Reset butto n o n th e rear pa n el (s ee “Rear Pa nel” on page 1 5 ) for 5 sec onds. 5 The Route r will r estart, an d when th e start- up sequence has c o mplet ed , browse t o: ht tp:/ /1 92. 16 8.
82 C HAPTER 6: T ROUBLESHOOTING Add itional ly c onsider mo ving the wirel ess com pute r cl oser to the Rou ter to conf irm tha t t he bu ilding struc tur e o r fitt ings are no t adv ersel y aff ecting t he connecti vity .
Recove ring from C or rupt ed Softwar e 83 Rec ove ring fr om Corrupt ed So ftw ar e I f the syst em soft ware h as b e c ome co rrupted, the Router will e nter a “r ecovery” stat e; D HCP is enab led, and the LAN IP add ress is set t o 1 92. 168 .
84 C HAPTER 6: T ROUBLESHOOTING Fr equen tly As ked Question s How do I res et the R outer to Fac tor y Def ault s? See “F orgo tt en P ass wor d an d Res e t to Fac to ry D efa ult s” on page 8 0 . How ma ny comp ute rs on th e LAN do es the Route r su pport? A m aximum of 253 c omp uters on th e LAN a r e su ppo rte d.
A IP A DD R E SSI NG Th e Int er n e t Pr otoc ol Sui te The Inte r net pr otoc ol suite co nsists of a well -defined se t of co mmuni catio ns protoc ols and seve ral sta ndard ap plica tion protoc ols.
86 A PPENDIX A: I P A DDRESSING Fo r you r n etw o rk to w or k c or rec tl y , al l de vic es on t he n e tw or k m us t h av e: ■ The sam e sub-networ k addre ss . ■ The sam e su bn et mask. The onl y valu e that will b e d iffer ent is t he specifi c host devic e number .
Ho w does a Device Obt ain an IP Addres s and Sub net Mask? 87 This ty pe o f IP Add ress ope ra tes on a sub net ma sk of ‘255.2 55.0 .0’. See Ta b l e 4 for an exa m ple a bout h ow a net work (on ly four co mputer s re p re sen ted) and a R out er might be conf igured.
88 A PPENDIX A: I P A DDRESSING an IP address at random from t he indu stry sta ndard subn et o f 169 .254.x. x (wi th a subne t ma sk of 255.2 55.0 .0). If tw o d evices a lloca te thems elves th e same addr ess, t h e conf lict is dete cted and one of th e devices allocates itself a ne w add r ess.
B T ECHNI CAL S PECIFICATI ONS This secti o n list s the technical spec if i c atio ns for the O ff iceCo nnect A DSL W ireless 11g F irewall Router . Off ice Conn ect ADS L Wi r ele ss 11 g Firew a l.
90 A PPENDIX B: T ECHNICAL S PECIFICATIO NS Ma ximum cli ent s: 128 O /P P owe r 16d Bm Op erating T e m peratu r e 0 °C to 40 °C (32 °F to 105 °F ) Pow er 8 V A , 25 BT hU/ hr Hum id ity 0% t o 90 % (non -cond ensing) hum idity Di me ns io ns ■ W idt h = 220 mm (8.
Offic eConnect ADSL W ir el e ss 11 g Firew all Ro uter 91 Sy s te m Requir emen ts Opera ti n g Sys tems The Ro uter w ill suppo rt t he fol lowin g Oper ating Sy stem s: ■ W indo ws 95/98 ■ W indo ws NT 4 .0 ■ W indo ws ME ■ W indo ws 2000 ■ W indo ws XP ■ Ma c OS 8.
92 A PPENDIX B: T ECHNICAL S PECIFICATIO NS.
C S AFETY I N F ORMA TION Impor tant Safe ty In formati on WARN ING : Warn ings c onta in direc tion s tha t you must f ollow for your person al safety .
94 A PPENDIX C: S AFETY I NF ORM ATION WA RNING: RJ-4 5 po rts. These are shiel ded RJ-45 dat a socket s. They cann ot be u sed as teleph one sock ets.
95 VORSICH T : Es sin d kein e von dem Be nutzer z u ersetz ende oder z u wart ende T ei le in de m Ger ät vor handen . Wen n Sie ein P robl em m it dem Rou ter habe n, das n icht mi ttels de r Fehl er analyse in die ser Anleit un g behob en werden kann, set zen Sie si c h mit Ihrem Liefer an ten in V erbind ung .
96 A PPENDIX C: S AFETY I NF ORM ATION co ndition s ne so nt mai ntenue s q ue si l'é quipem ent auqu el il e st r acc or dé f onc ti onn e da ns l es m ême s co ndi ti ons. A VERTISSE M ENT : Il n’y a pa s de parti es r em place ables par les uti lisateurs ou entr etenues par les utili sateurs à l ’intéri eur du moyeu.
D E ND U SER S OFTWAR E L I CEN SE A GR E EM EN T 3Com Cor porati on E ND USER SOF TW ARE LI C E NSE AG REEM ENT YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS B EFO R E DOWNLOADING, INS.
98 A PPENDIX D: E ND U SER S OFTWARE L ICENSE A GREEMENT and de veloped solely at privat e expe nse. Th e Softwa re is de livered as "Com mercial Comp uter Softw are" as defined in DF ARS 252 .227- 701 4 (June 1995 ) or as a com merci al item as defined in FAR 2.
E O BT AI NIN G S UP PORT FOR YO UR P R ODUCT Registe r Y ou r Product W ar ran ty and ot her servi ce benef its start from t he date of purchase , so it is im port ant to regist er your product qu ickly to ensure y ou g et full use of th e wa rr a nty a nd ot he r ser vi c e be n ef it s a va i l ab le to y ou .
10 0 A PPENDIX E: O B TAINING S UPPORT FOR YOU R P RODUCT T roubles hoot Online Y o u wi ll find supp ort tool s post ed on th e 3Co m we b s ite at ht tp:/ /w ww. 3c om .com / 3Co m Know ledg ebas e h elps you t r o ubl esho ot 3C om product s. Th is qu ery-b ased in teractiv e tool is locat ed at ht tp:/ /k now le dg ebas e.
Contac t Us 101 T o send a product directl y to 3 Com for repai r , you mu st first ob tai n a re tur n auth oriza tion n umb er (R MA ). Prod ucts se nt t o 3C om, w itho ut autho rizatio n number s clea rly marked on t he outsi d e o f th e pack age, wi ll be retu rned to the se nder unope ned, at the sen der’ s expen se.
10 2 A PPENDIX E: O B TAINING S UPPORT FOR YOU R P RODUCT Austria Be lgiu m Denmark Finl and France Germany Hungary Ir eland Is ra el It al y 01 795 6 71 24 070 700 77 0 701 0 7289 010 80 2783 082 5 8.
G LOSSARY 8 02.11b The IEEE spec ifica tion for wir eless Eth ern e t which all o ws sp eeds of up to 11 Mbps. T he stand ar d provide s for 1 , 2, 5.5 a nd 11 M bp s dat a rat es. The rate s will switch au toma ticall y depen ding on r ange and envi ronme nt.
10 4 G LOSSARY comm on speed. Th e or d e r of pr efer en ce ( b e st fi rst) is: 1 0 0BA SE-TX fu ll dup lex, 10 0BA SE-T X ha lf dupl ex, 10BA SE-T full d uplex, and 1 0BA SE- T half d uple x. Aut o-ne gotia tion is define d in the IEEE 8 02.3 stan dard for Ethe r net and is an op eratio n tha t takes pla c e in a few mill isecond s.
G LOSSARY 105 host c omp uters and the ir respective do main n ame s and IP ad dre ss es, so tha t wh en a do ma in nam e is reque sted (as i n typ ing “3 com .
10 6 G LOSSARY IEEE I nstitute of El ectri cal a n d Electr onics En gineer s. This Ameri c an orga nizat ion was fou nded in 196 3 a nd sets standa rds for comp uters a nd co mmu nica tio ns. IE TF Inter ne t Engi neering T a sk Fo r ce . An organi zat ion respon sible for p r ovi di ng e ngi nee rin g so lut ion s fo r T CP/ IP net wor ks .
G LOSSARY 107 MAC Media Access Contr ol. A proto col s pecified by the IEEE f or determinin g whic h devic es have ac cess to a netwo rk at any one time . MAC Address Media Access Con tr ol Ad dress. Al so ca ll ed t he ha r dwa re or ph ys ica l address.
10 8 G LOSSARY Rou ter A dev ice tha t acts a s a cent ral hu b by co nnec ting to e ach com put er's netwo rk int erfac e c ar d and managing th e data traf fic bet ween the lo c al netwo rk and th e Internet. Se rv er A computer in a net work that is s har ed by multi p l e en d stat ions.
G LOSSARY 109 univ ersa l pl ug and pla y Univ ersal plu g and play i s a syste m which allows compati ble appli cations to rea d so m e of th ei r s ett i ng s f ro m th e Ro u te r . T hi s al lo w s th em t o autom atical ly conf igure som e, or all, o f th eir s ettin g s and need less us er co nfigu ratio n.
11 0 G LOSSARY WLA N W i re l ess L ocal A rea Net wor k. A WL AN is a g r o up o f com pute rs an d dev ices connect ed together by wir eless i n a rel atively small ar ea ( such as a hou se or off ice). WP A Wi-Fi Pr otected A cc ess. A dynami cally changing encr ypti on m ech anism fo r w ire les s n etw o rk i ng.
R EGUL AT OR Y N OTICES FOR TH E O FF I C E C ONNE CT ADSL W IR E LES S 11 G F IR E WALL R OUTE R Channe ls Use of the OfficeCon ne ct ADS L W ireless 1 1g Fi r ew al l Rou ter is only aut horize d for th e ch anne ls a pproved b y e ach cou ntry .
11 2 Howeve r , ther e is no guarant ee that int erfer ence will n ot occur in a partic u lar inst allation. In formati on t o the Us er If this equi pm ent do e s cause int erfe re n ce to rad io or .
113 ■ Feder al Com munic ation s Com missi on 47 C FR P art 1 5, su bpar t B 15. 107 (a )Cla ss B C ondu cted L im its 15. 109 (a )Class B R a diated E mission s Lim its ■ 15.
11 4.
I NDEX Numbers 12 8-bit WEP 46 12 8-bit WEP Sc reen 46 14 83 Brid ge Mode 55 64 -bit W EP Scr een 47 A Acces s Contr ol Sc reen 62 Add PC Scr een 63 Add Schedul e Rule S cree n 65 Add res ses IP 85 Ad.
11 6 I NDEX co nfigur ing 56 MAC Addr ess Filter i ng Screen 66 mode 30 N NA T (N etwor k Addr ess T ransl ation ) 68 NA T - T ( NA T T r av e rs a l) 68 Netw ork ad dres ses 85 Netw orkin g wir eless.
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3Com Corpora tion, Corporate Headquarters, 350 Campus Drive, Ma rlborough, MA USA 01752-30 64 T o le arn m or e about 3Com pr oducts a nd services, visit our W orld Wide Web s ite at www.3com.com All specifications are subject to change without notice.
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 3CRWDR100B-72 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 3CRWDR100B-72 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso 3Com OfficeConnect 3CRWDR100B-72 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul 3Com OfficeConnect 3CRWDR100B-72 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il 3Com OfficeConnect 3CRWDR100B-72, 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 3CRWDR100B-72.
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 3CRWDR100B-72. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo 3Com OfficeConnect 3CRWDR100B-72 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.
