Manuale d’uso / di manutenzione del prodotto 2426-PWR del fabbricante 3Com
Vai alla pagina of 108
www.3Com.c om Part No. 100166 22 Published May 2008 Baseline Switch 2226-SFP Plus Baseline Switch 2426-PWR Plus Baseline Switch 2250-SFP Plus Installation and User Guide Installations- und Bed ienungs.
3Com Corporation ■ 350 Campus Drive ■ Ma rlborough ■ MA 01752-30 64 Copyri ght © 2 008, 3C om Corp oration. A ll righ ts reserv ed. No p art of t his documen tation may be reproduced in any for.
C ONTENTS A BOUT T HI S G UIDE Conv enti ons 7 Docume ntation Comm ents 8 Product R egistrati on 8 1 I NTR ODUCING THE B AS ELIN E S WITCH Over view of th e Basel ine Swi tch 9 Features and Ca pabilit.
Automat ic IP Configur ation 37 IP Setup 38 Backup Co nfigurat ion 3 8 Restore Con figuration 39 Firmw are Upgrad e 39 Rese t 40 System Access 40 System Name 43 System Ti me 43 SNMP 43 Conf iguring VL.
PC-A T Serial Cable 88 Modem Cabl e 88 Ethernet P ort RJ -45 Pi n Assign ments 89 D 3C OM CLI R EFERENCE G UID E Getting S tarted wit h the Comma nd Line Int erface 91 Cons ole P ort 91 Logging on to .
.
A BOUT T HIS G UIDE Thi s guid e descri bes ho w to inst all yo ur 3Com Sw itch and perf orm initial man agemen t confi gurations. It covers th e following switch es: Baseline Sw itch 2226- SFP Plus (.
8 A BOUT T HIS G UIDE Docum entation Co mmen ts Y our suggestio ns ar e very impo rtant to us. Th ey will help m ake o ur docu menta tion mo re useful to you.
1 I NTR ODU CING THE B ASELINE S WITCH This cha pter provides an overvi ew of the fe atures and capabi lities of the 3 Com Base line Swit ch 2226-SF P Plus, 3Com Bas eline Switch 2426-PW R Plus, and 3Co m Base line Switc h 2250-SF P Plus.
10 I NTRODUCING THE B ASEL INE S WITCH 10/100 M bps port s can oper ate in either ha lf-dupl ex or full-d uplex mode. Power - over -Et her net Capabi lity The Switc h 2426-PW R Plus (3CB LSF26PW R) provides 24 front panel RJ-45 ports that support the IEE E 802.
Physical Feat ures 11 Figure 3 3CBL SF50 Fr ont and Rear Pane ls Front Panel The f ront pane l of th e Switc h cont ains a series o f indi cator lig hts (LEDs ) that help describ e the stat e of vario us n etwo rking and conne cti on op erat ions . (1) RJ-45 10 /100 Ports WARNING : RJ-45 Ports.
12 I NTRODUCING THE B ASEL INE S WITCH netwo rk devic es, such as IP phones or wireless acces s points, and aut omatica lly suppl y the requi red DC power , up to a maxi mum of 29.
Physical Feat ures 13 (4) 10/100 BASE-TX Link/A ctivity Stat us LEDs The top ro w (3CBLSF5 0) and the fir st (top) and thir d rows (3C BLSF26/ 3CBLSF2 6PWR) of LED s, which are colored y ellow o r gre.
14 I NTRODUCING THE B ASEL INE S WITCH 1000B ASE-T Mode Ta b l e 3 1000B ASE-T Link/ Activity S tatus LE Ds Ta b l e 4 1000B ASE-T SFP /Duplex Status LED s 1000BAS E-T only operates in full -duplex m ode. 10/100 BASE-TX ca n operate in half- or full-dupl ex mode.
Physical Feat ures 15 Ta b l e 6 SFP Mode SFP/Du plex Status LEDs The SFP module wi ll only disa ble the 1000B ASE-T inte rface onc e there i s a valid link on the modul e.
16 I NTRODUCING THE B ASEL INE S WITCH Package C ontents Before insta lling and usi ng the Switch , verify that your Switch pa ckage is comple te. The Swi tch com es with: ■ One power cord ■ One c.
2 I NSTALLING THE S WITCH This chapt er contain s informati on that you ne ed to install and set up the Switc h. It covers the following topi cs: ■ Import ant Safety Info rmation ■ Positi oning t .
18 I NSTALLING THE S WITCH vorh anden i st. Sie kö nnen diese Sicherhe itsanlei tung a uf der CD-RO M finden die im Liefer umfan g Ihres Netz werkschalt ers enth alten is t. Sie könne n die Anleitun gsdatei auc h von der 3Co m Webseite: www .3Com.com herunt erla den.
Rack-Moun ting or F ree-Stan ding 19 It is al ways go od prac tice to we ar an anti-st atic wri st strap when i nstall ing netw ork e quipment , conn ected to a groun d point. If one is not av ailable , try to ke ep in conta ct with a groun ded rack a nd avoid touc hing the unit's ports and con nectors, if possible.
20 I NSTALLING THE S WITCH Montagesat z Anweisun gen Der Switc h wird mit zwei H alterunge n und vier Schr aube n geli efer t. Di ese wer den für den Einba u in einem Baug ruppent räger be nutzt. Bei der Montage de r Baugrup pe beac hten S ie die A nweisun gen a us “Positioni ng the Switch” auf page 1 8 .
Supplying Power to the Switch 21 CAUTION: The Switch has no ON/OF F switch . The only way t o power on and power of f the Switch is by conne cti ng and di scon nect ing th e power cord. This is called “power cycling”. T o po wer on th e Switch: 1 Plu g the po wer c ord into the po wer so cket on the rear pane l of the Switc h.
22 I NSTALLING THE S WITCH Using SFP T ranceivers The follow ing se ctions des cribe ho w to insert an SFP transc eive r into an SF P slot. SFP tr ansc eivers a re h ot-inse rtable and hot-sw appabl e. Y ou can remove them fr om and inse rt t hem into an y SFP por t wit hout ha ving to power down the S witch.
Performing Spot Checks 23 Figure 5 Insertin g an SFP T ransceiver 2 Gently slide the transc eiver in to the SFP s lot until it clicks into pl ace. CAUTION: SFP trans ceivers are keyed an d can be pro perly ins erted onl y one way . If the tran sceive r does not cli ck when yo u insert it, remove it, tu rn it over , and reinsert it.
24 I NSTALLING THE S WITCH Ta b l e 9 Items to Check If y ou ex peri ence a ny pr oblems op erat ing th e Swi tch, re fer to “T r ouble sho oting ” on page 75 . Cabli ng Chec k tha t all ext ernal cabl ing conne c- tions are secure and that no cables are pulled t aut.
3 C ONNECTI NG TO THE W EB I NTERFACE The Swi tch has a b uilt-in Web interf ace that you can use to set the ad min passw ord, chang e the IP ad dress that is assigned to the Sw itch, and configu re its advan ced sett ings.
26 C HAPTER 3: C ONNE CTIN G TO THE W EB I NTERFACE switch will try to obta in an IP addr ess fr om a DHCP ser ver (as sumin g the Swit ch is c onnec ted i nto a network where one is a vailable).
Logging On to the W eb Inte rface 27 summary to display the new IP s ettings. Figure 7 shows what you shoul d expect to see. Not e that w hen a m anual I P address ha s be en assign ed it will not revert back to th e DHCP mod e on subseque nt re-boo ts.
28 C HAPTER 3: C ONNE CTIN G TO THE W EB I NTERFACE Navigating the Web Interface The Web inte rfac e has been design ed to e nable yo u to easily perfor m adv anced config uration tasks and v iew inform atio n about the Switc h. Menu The men u is loca ted on the left si de of th e Web interf ace.
Navigating the We b Interfa ce 29 Figure 11 3CBLSF 50 Switch Screen Layout L W P Ta b l e 1 lists the av ailabl e items o n the m enu. Ta b l e 1 A vailable M enu Items Menu Sub-Me nu T abs System Inf.
30 C HAPTER 3: C ONNE CTIN G TO THE W EB I NTERFACE SNMP Contains tabs that allo w you to: ■ Set S NMP Ag ent Stat us. ■ Add communit y strings . ■ Remove community s trings. Device Configures the d evice. VLAN Contains tabs that allo w you to: ■ Create a VLAN.
Accessing the Switch using the 3Com Switc h Detect Application 31 Buttons Depe nding o n the sc reen that is currently displaye d, the following butt ons may appear: ■ Apply – Cli ck t o save and .
32 C HAPTER 3: C ONNE CTIN G TO THE W EB I NTERFACE Running the 3Com Sw itch Dete ct Appl ication The 3Co m Baselin e Switch CD-ROM contai ns, in addi - tio n to the docume ntat ion, the 3Com Switc h D etect App lic atio n.
Accessing the Switch using the 3Com Switc h Detect Application 33 Figure 13 The 3C om Switch D etect Search Screen 4 Once your Swi tch or Swi tches have been locate d, you will be pr esented with a list ( Figure 14 ). Select t he switc h to which you want to co nnect an d click on "Open.
34 C HAPTER 3: C ONNE CTIN G TO THE W EB I NTERFACE.
4 C ONFIGURI NG THE S WITCH F RO M T HE W EB I NTERFACE This cha pter provides info rmation on how to configure the Swi tch’ s advanced features. T opics inc lude: ■ Device Summary In formati on .
36 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Device V iew Cont ains field s that displ ay th e syst em, swit ch, and manageme nt informati on to identify th e Switch.
Administra tion Setti ngs 37 Color Key Desc ript ion of the colo r codi ng. Figure 17 Color Key Administration Settings The Adminis trat ion menu inclu des eight ad ministra tion items: ■ IP Setup .
38 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE T o determin e the exac t IP addre ss that t he Switch assign s to itself du ring aut o IP config uration, refer to the label on the top cove r of the Swit ch. This la bel contai ns the MAC a ddress and defa ult IP addre ss of the Switch.
Administra tion Setti ngs 39 Rest or e Config urati on T o rel oad co nfig urat ion set ting s that you pr evio usly saved to a file : 1 Cli ck Administration , Backup & Re store, then t he Resto re Conf iguration tab. The Rest ore Conf igurat ion scr een a ppear s.
40 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE A progress screen displ ays while th e upgrade is taking place. The upgra de procedure can tak e a few minut es, and is compl ete when th e progress bar has f inished ru nning and the Po wer LED has s topped fla shing an d is perma nentl y green.
Administra tion Setti ngs 41 T o en sure that un authorize d users d o not acc ess the Web inte rfac e, 3Com reco mmend s that yo u set an admin pas sword wh en you f irst co nfigur e the Swi tch.
42 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Modify User This p age a llows you to mod ify a user’ s acce ss lev el and passw ord. Figure 24 Modify User Screen Remove User T o remove a user from the S witch, c lick on the u ser name, then cl ick Remove .
Administra tion Setti ngs 43 System N ame Use these user defin able field s to h elp identi fy yo ur switch. Figure 26 System Name Screen System Ti me Cli ck Administration , then Syst em Time on the me nu. This s creen allo ws yo u to set th e syst em time .
44 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE SNMP Add This pag e all ows you to create comm uni ty s tring s fo r management access.
Configuring VLANs 45 Y ou can u se the Swi tch to create VL ANs to orga nize any group of ports in to sepa rate broadca st domai ns. VLAN s confine broadcast tra ffic to the origina ting group and help el iminat e broadcast storm s in large ne twork s.
46 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Setup Use the S etup sc reen to create VLANs on the Swi tch. T o propagate inf ormation a bout VLAN groups used on t his Switch t o exter nal de vices, you must specify a VL AN ID for ea ch VLA N.
Configuring VLANs 47 1 Enter a set of VLAN s or select al l VLANs to confi gure, then c lick Sele ct . 2 Fr om the dr op down menu, sele ct a VLAN to modif y .
48 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE 1 Ente r a set of VLANs or select all VLANs to add to the re name list, then click Select . 2 From t he list o f selected VLANs, choose a VLAN t o r enam e. Ent er a new V LAN n ame a nd cl ick Apply .
Configuring VLANs 49 VLAN Detail Use this scr een to displa y detailed VLAN informa tion. 1 Enter a set o f VLANs o r selec t all V LANs to a dd to the details li st, then cl ick Select . 2 From the drop d own me nu, ch oose a VLAN to di splay the as sociate d tagge d and unt agged memb er ports .
50 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Setting Up T wo VLANs on the Same Switch Figure 38 illus trates how y ou can set u p a simple VLAN on the Sw itch using de sktop connect ions.
Configuring VLANs 51 Figure 39 T agged VLAN Configura tion T o s et up the co nfigurat ion shown in Fi gur e 39 , do the following: 1 Create VLAN 2 on both Sw itch 1 and Swi tch 2. Y ou need not create VLAN1 s ince it e xists b y default. 2 On Switc h 1, set the port s that you want to be pa rt of VLAN2 to Untagge d .
52 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE tree networ k. The bridg ing device , known as the Root Bridge, ge nerates br idge protocol da ta units (B PDUs) on all ports at a r egular inte rval, known as the Hello Time. All other spa nning tree-com pliant devices on the netwo rk have a de signat ed Root Por t.
Configuring VLANs 53 Set up T o use s panning t ree, use t he Setup tab an d choos e Enabl ed fr om the St ate drop d own me nu , f ill i n t he setup pa rameter s, and click Apply . Figure 41 Spann ing T ree Setup Screen Port Set up This a dministra tive tool sup ports t he configur ation of the S witch to forwa rd, or blo ck and discard 80 2.
54 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE ■ Stat us – Enab les and di sable s spann ing tr ee for the port. ■ Edged Port – Enabl es and disabl es edged port for the po rt. ■ Link T yp e – Choose be tween Poi nt-to-Poin t, Shared, or Auto f or the li nk type.
Configuring VLANs 55 Br oadca st S torm A broadcas t storm occ urs wh en an inco rrect packet i s sent ou t on a networ k, caus ing most ho sts to respo nd all at onc e and ty pically with wrong a nswer s that star t the proce ss over agai n. Broadcast storms use s ubstan tial netw ork bandw idth and may caus e netwo rk time-out s.
56 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Modify Use the M odify tab to set the Switc h’ s br oadcast st orm contr ol and thr eshol d limits. The se ttings in clude: ■ Status – Ena bles a nd dis ables broadcast storm control.
Configuring VLANs 57 Set up Use th e Setup tab to confi gure t he global setti ngs for the Voice VLAN. The f ollowing op tions a re available: ■ V oice VL AN Stat us – Ena ble or disabl e V oice VL AN for the s witch. ■ V oice VLAN ID – Input the Vo ice VLAN ID for the switch.
58 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Port Detail Use the Port Detail tab to display th e V oice VL AN info rma tion for se lected ports . Figure 49 QoS Port Detail Scr een OUI Summary Use the OUI Summar y tab to displa y the l ist of Organiz ational Un ique Identi fier for a com pany and the ir de scri ptio n.
Configuring VLANs 59 Figure 51 QoS OUI M odify Screen PoE (3CB LSF26-P WR only ) Cli ck Device , then PoE on the menu. A screen appe ars wit h two ta bs tha t inclu de: ■ Summary ■ Setup Summary Use the Summary tab to display t he devic e and por t PoE settings .
60 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Note th at th e Switc h operat es a por t base d PoE p riority scheme. Lower n umbered p orts hav e priorit y over higher numbered on es.
Configu ring Port S ettings 61 Figure 54 Port Administrati on Summary Scr een Detail Use the Det ail tab to displ ay de taile d po rt set tin g info rmati on fo r a port . Figure 55 Port Admin istration D etail Scr een Setup Use the Se tup tab to conf igur e the po rt s ettin gs.
62 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE disabled , pack ets may be drop ped und er certain period s of high traffic. Flow cont rol is disabled by d efault. ■ Speed – Sets the spe ed mode of the po rt. Available option s include au to, 10, 100, and 1000.
Configu ring Port S ettings 63 1000 Mb ps c onnec tion s ar e al ways f ull -dupl ex. Half- duplex con nection s are only ava ilable for 1 0 Mbps and 10 0 Mbps sett ings . CAUTION: Befo re manual ly sett ing a port to full-dupl ex, ver ify tha t the devic e conne cted to th e port is also ma nually set to t he same spe ed and dupl ex setting .
64 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Summary Use the Summary tab to display a list of co nfigured link aggregati on Group IDs an d the asso ciated member Port s. Figure 57 Link Aggregation Summary Screen Create Use the Crea te tab to add po rts to a group membership.
Configu ring Port S ettings 65 Modify Use th e Modify tab t o rea ssign me mber port s of a lin k aggregat ion group. Figure 59 Link A ggregation Mod ify Screen T o modify a link aggregat ion group: 1 Selec t the aggregatio n group to modif y , the n click Sele ct .
66 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Stat istics The Switch allows you t o display detailed st atistics o f one, severa l, or all ports. Figure 61 Port Statistics S creen T o display statisti cs for a port: 1 Access the Web inte rface.
Security 67 Configur e The fol lowin g paramet ers ar e availa ble: ■ Max Ret ries – Sets the number o f re tries o f sendin g authen ticati on r eques ts. ■ Ti meout – Sets the in terval betw een send ing authen ticati on r eques ts. ■ IP Address – The IP add ress of the RADI US server .
68 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE Summary Use the Summary tab t o display t he 802.1X authentic ation se ttings fo r all th e ports . Figure 63 802.1X Summary Scre en Setup Use the Se tup ta b to configu re the 802.1X auth enticaio n sett ings.
Monitorin g 69 used to detect if a ne w device is plugged int o a switch port. (Default: Disabled) ■ Max Coun t – The ma ximum numb er of h osts t hat can conn ect t o a po rt w hen t he Mu lti-H ost oper atio n mode is select ed.
70 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE entering the Switc h. Y ou can disp lay the ad dress table to fi nd specif ic MAC addr esses, or vie w MAC addr esses associ ated wit h a specifi c port or VL AN.
Monitorin g 71 Switch t akes all the traf fic going in or out of t he mirro r port and copies it to the monitor port. CAUTION: The monit or port shou ld have a high er bandw idth th an the mirro r port. Otherwi se, the Switc h may no t be able to co py all traf fic effec tively du ring peri ods of high tra ffi c.
72 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE T o re move a port mirr or sessio n: 1 From th e port mir ror sessio n list, select the se ssio n to rem o ve . 2 Click Remov e . Cable Dia gnostic s The Swit ch provides a cable diagn ostic uti lity , which help s you de tect and reso lve issu es wi th the attache d cables .
Monitorin g 73 Diagnostics Use th e Dia gnosti cs tab t o displ ay indi vid ual port inform ation on T est Result , Cable Fault Di stance (in mete rs) , and Last Upd ate. Figure 70 Cable D iagnostic Sc r een In the example: "0,0", t he firs t digit refers to the le ngth of t he tr ansmi t pai rs.
74 C HAPTER 4: C ONFIGURI NG THE S WITCH F ROM T HE W EB I NTERFACE.
5 T R O UBLESHOOTING This c hapter lists some iss ues that you may encount er while installi ng, usin g, and mana ging the Switc h, with sugge sted cou rses of c orrectiv e action to take. If you e ncoun ter an i ssue that is not lis ted here an d you canno t solve it, ch eck the 3Co m Kno wledgeba se at http://knowledgebase.
76 C HAPTER 5: T ROUBLESHOOTING The Swit ch will perfor m automa tic IP conf iguration afte r you reset i t. See “ Automatic IP Config uration ” on page 37 for more infor mation.
If the Problem Persists 77 The Link/Activity LED is on, but network performance is poor The Switch supp orts full-dup lex autonegot iation. If th e conn ected devi ce does no t suppor t autoneg otiatio n, ensure that it is c onfigured for hal f-duplex ope ration only .
78 C HAPTER 5: T ROUBLESHOOTING.
A O BTAINING S UPPORT FO R Y OUR P RO D U C T Registe r Y our Product W arrant y and othe r service be nefits st art from the date of purcha se, so it is importan t to register y our produc t quickl y to ensur e you get full use of the warranty and other se rvice bene fits availa ble to you.
80 A PPENDIX A: O BT AINI NG S UPPOR T FOR Y OUR P RODU CT Upda tes yo u must fir st regi ster your pr od uct on t he 3Com Web si te at http://eSupport.3com.com/ . Firs t time use rs wil l need t o appl y for a user name and passw ord. A link to softw are download s can be foun d at http://eSupport.
Contact Us 81 . Country T elep hone Number Asia, Pa cific Rim T elephone T echnical Sup port and Rep air Australia Hong Kon g India Indonesia Japan Malaysia New Z ealand Philippines PR of China Singapor e South.
82 A PPENDIX A: O BT AINI NG S UPPOR T FOR Y OUR P RODU CT Country T elephone Number Latin America T elepho ne T echnical Support a nd Repair From the Caribbean, Central a nd South America, call: Anti.
B T ECHNICAL I NFORMATION 3CBLSF26 Relat ed Standards The Base line Swi tch 2226 -SFP Plus has been design ed to the follo wing standa rds: Environmental Physical Electri cal Function al IEEE 802.3 (Eth ernet), IEEE 802 .3u (Fast Ethernet), IEEE 802 .
84 A PPENDIX B: T ECHN ICAL I NFORMATION 3CBLSF26PWR Related St andards The Bas eline Switch 242 6-PWR Pl us has been design ed to the fo llowing st andards: Environmental Physical Electrical Function al IEEE 802.3 (Eth ernet), IEEE 802 .3u (Fast Ethernet), IEEE 802 .
3CBL SF50 Rela ted S tanda rds 85 3CBLSF50 R elated S tandards The Baseline Switch 2250- SFP Plus ha s been de signed to the fo llowing st andar ds: En vironmen tal Physica l Electrical Functiona l ISO 8802-3, IEE E 802.3 (Ethernet), IEEE 802.3u (Fas t Ethernet), IE EE 802.
86 A PPENDIX B: T ECHN ICAL I NFORMATION.
C P IN -O UTS Consol e Cable A Cons ole ca ble is an 8-co nduc tor RJ 45- to-DB9 cable . One end of the cable has an RJ-45 plug for conne cting to the switc h’ s Consol e port, and th e other end has a DB-9 s ocket connec tor f or conn ectin g to th e seria l port on th e termi nal , as sho wn in Fi gur e 71.
88 A PPENDIX C: P IN -O UTS Null Mode m Cabl e RJ-45 to RS-232 25-pi n PC-A T S erial Cable RJ-45 to 9-p in Modem Cable RJ-45 to RS- 232 25-pin Screen TxD RxD Ground RTS CTS DSR DCD DTR Screen RxD TxD.
Ethernet Port RJ-45 Pin A ssignments 89 Ether net Po rt RJ-45 Pin A ssignments Ta b l e 2 RJ-45 MDI Pin Assignme nts Ta b l e 3 RJ-4 5 MDIX Pin As sign ment s Pin Num ber 10/1 00 1000 Ports configur e.
90 A PPENDIX C: P IN -O UTS.
D 3C OM CLI R EFERENCE G UIDE This se ction de scribes us ing the Com man d Line Inte rface (CLI ) to manag e the devi ce. The de vice is managed thr ough the C LI fr om a dir ec t conn ecti on to th e devi ce consol e port.
92 A PPENDIX D: 3C OM CLI R EFERENCE G UIDE If the passwor d is invalid, the follo wing message appea rs and Login process restarts . Automatic Logout The user se ssion is automa tically terminated af ter 30 minutes in which no device con figuratio n activit y has occu rr ed.
CLI Com mand s 93 ? The ? comma nd displays a lis t of CLI comma nds on the devi ce. Syntax ? Default Configuration This command ha s no defaul t configurat ion.
94 A PPENDIX D: 3C OM CLI R EFERENCE G UIDE Ping The Ping co mmand sends I CMP ec ho request packets to another node on the ne twork. Synt ax ping [ IP ad dress | URL | host name ] Parameters ■ IP A ddr ess — I P addr ess to p ing. ■ URL — URL add ress to ping.
CLI Com mand s 95 ipSetup The ipSetup command allows the us er to define an IP addr ess on the devi ce eith er manua lly or vi a a DHCP server . Syntax ipSetup Default Configuration No defa ult IP ad dre ss is d efined fo r interf aces.
96 A PPENDIX D: 3C OM CLI R EFERENCE G UIDE Upgrade The Upgrade comman d star ts a sy stem do wnload and thereby a llowing a system up grade . Synt ax upgrade Default Configurati on Thi s co mmand h as n o def aul t conf igur ation. User Guidelin es The Upgrade comm and promp ts the u ser fo r required inf ormat ion.
CLI Com mand s 97 Init ia lize The Initialize command resets the devic e conf iguratio n to factory defaults, r etaining the cu rre nt IP conf igur atio n. Syntax Initialize Default Configuration This command ha s no defaul t configurat ion. User Guidelines The sys tem prompts fo r confirmat ion of the reques t.
98 A PPENDIX D: 3C OM CLI R EFERENCE G UIDE Logout The Log out command terminates the CLI sess ion. Synt ax logout Default Configurati on Thi s co mmand h as n o def aul t conf igur ation. User Guidelin es Ther e are no us er g uidel ines f or t his c ommand.
99 R EGULATORY N OTICES FCC Statement This equipm ent has been t ested and found to comply with the limits fo r a Class A digital device, p ursuant to Part 15 of the FCC Rules. T hese limit s are desi gned to pr ovide reasonable pro tection against harmfu l interference in a commerical environmen t.
100.
G LOSSARY 10BASE-T The IEEE specifica tion fo r 10 Mbps Et her net over Categor y 3, 4 or 5 twisted pa ir cable. 100BASE- TX The IEEE specificatio n for 100 Mb ps Fast Ethe rnet over Category 5 tw isted-pa ir cable. 1000BASE -LX IEE E 802. 3z spe cifi cat ion fo r Giga bit Et herne t ove r 9/125 micron core singl e-mode fibe r cable.
102 G LOSSARY Category 3 Cables One of five gr ades of T wisted Pai r (TP) cabling de fined by the EIA /TIA-568 sta ndard. Categor y 3 is voice grad e cab le a nd ca n onl y be used in Etherne t ne twork s (10BASE -T) to transm it data at s peeds of up to 10 Mbps.
103 Full Dup lex A system that al lows pack ets to be transm itte d and rec eived at the same ti me and, i n ef fect, doubles the potent ial throughput of a link . Half Duplex A system that al lows pack ets to be transm itte d and rec eived, but not at the same time.
104 G LOSSARY switches) that cover a relative ly small geographic ar ea (usual ly not la rger tha n a floor or buildin g). LAN s are charac terized by high tran smission s peeds ove r short distan ces (up to 100 0 metres). Layer 2 Data L ink l ayer in th e ISO 7- Laye r Data Com mun icati ons Protoco l.
105 Server A comp uter in a network that is shared by m ultiple end stat ions . Se rvers pr ovide end s tati ons w ith acces s to shared netw ork ser vices such as com pute r files and printer queues .
106 G LOSSARY VLAN A Virtual LAN is a co llection of net work nodes that shar e the sa me collisio n domain r egar dless of t heir physic al location or connect ion point in th e network . A VLAN serv es as a logical workgroup with no physical barriers , and allows u sers t o shar e informa tion and resources as though located on the same L AN.
I NDEX Numbers 1000BASE -LX 101 1000BASE -SX 101 1000BASE -T 101 100BA SE-TX 101 10BASE- T 101 A auto I P conf iguration 37 B bandwid th 101 Baseline Switc h 28 48-SFP 83, 84 C categor y 3 cables 102 .
108 I NDEX P passw ord cha ngi ng 40 default (bl ank) 40 sett ing 36 port setti ngs config uring 56, 6 0, 66 position ing the S witch 18 POST 2 1 pr otocol defi ned 104 R r epai r auth oriz atio n num.
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 2426-PWR 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 2426-PWR - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso 3Com 2426-PWR imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul 3Com 2426-PWR ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il 3Com 2426-PWR, 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 2426-PWR.
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 2426-PWR. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo 3Com 2426-PWR 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.
