3Com 2250-SFP manuale d’uso

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 ienungsanleitung 3CBLSF 26 3CBLSF26P WR 3CBLSF 50[...]

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 form or by any means or used to make an y deri vative w ork (s uch as t ranslat ion, tr ansforma tion, o r adapt ation) withou t writte n permis sion fro[...]

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 pabilitie s 9 Auto sens ing of MDI/MD IX Co nnect ions 9 Auto nego tiat ing 10/1 00 Mbp s Po rts 9 Power -over -Ethernet Capability 10 Gigabit Combo P orts ([...]

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 ANs 44 VLAN 4 5 Forwa rding T agged/ Untagge d Frame s 49 Sample VLAN Configurations 49 Spa nning T ree 51 IGMP Sn ooping & Query 54 Br oadc ast [...]

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 the CLI 91 Automatic Logout 92 Concurrent CLI Sessions 92 CLI Commands 92 ?9 3 Ping 94 Summary 94 ipSetu p 95 Upgrade 96 Initializ e 97 Reboot 97 Logo[...]

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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 (3CB LSF26) Baseline Sw itch 2426- PWR Plus (3C BLSF2 6PWR) Baseline Sw itch 2250- SFP Plus (3CB LSF50) Unles s note d other wise, th e feat ures , spe[...]

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. Please e-mail co mments about this do cument to 3C om at: pddtec hpub s_comm ents @3Com. com Please inc lude the f ollowing info rmation when cont acti ng us: ■ Document t itle ■ Document[...]

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. It als o identi fies th e cont ents of the Sw itch packag e and hel ps you ge t to know th e physic al features[...]

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 802.3af Power-over -Et her net (PoE) st andard. Any 802.3af compli ant devi ce att ached to a[...]

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. The se are shiel ded RJ-45 da ta socke ts. They can no[...]

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. 6 W meas ure d at th e PD, assum ing 100 m Cat 5E cable connec ted betwe en the PD and the Sw itch 2426 -PWR, subject to pow er being availabl e from the over all powe r[...]

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 green, s how t he link , activit y and speed st atus of the r ela ted por ts: Ta b l e 1 10/100 BASE-TX Li nk/Activi ty Statu s LEDs (5) 10/1 00BASE-TX D[...]

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. SFP Mode Ta b l e 5 SFP Link/Activity Status LEDs Link /A ctiv ity Meaning Green The l[...]

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. (7) Power LED The Power LE D shows t he power status o f the Swit ch. Ta b l e 7 Power Status LED (8) Self-adh esive Pads The u nit is supplied with four self-adhe sive rubbe r [...]

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 onsole ca ble ■ Four standa rd height, self-ad hesive rub ber pads ■ One mo unting kit (pa rt numb er 1231 93-104) ■ Installati on CD ■ This [...]

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 he Switch ■ Rack-M ounting or Free-Standing ■ Supply ing Pow er to the Swi tch ■ Using SFP T ran ceivers ■ Perfor ming Spot Checks Impo rtant [...]

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. Impor tante Avviso di Sicurez za Vi preghiamo di leggere attenta mente e segu ir[...]

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. St atic discharge can cause[...]

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 . Der Sw itch ist e ine Ba ueinheit hoc[...]

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. R efer to “(9) [...]

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. Approved SFP T ran sceivers The fo llow[...]

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. 3 Remove th e pl[...]

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. Cooling fan (3CBLS F26PWR only) Where possible, check that the coolin g fan i[...]

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. If you only want the Sw itch to fu nction as a ba sic layer 2 switch , you do no t need to access the Web i nterface and con f[...]

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). If the re is no D HCP server available, or you are config uring the Sw itch in a stand- alone m ode, the Switch w ill alloca te itself an “Auto IP” ad[...]

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. Y ou will now k now eithe r the DHCP or manu al IP add ress and you ca n now move on to using th[...]

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. W hen you click an item on the me nu, the re lated s[...]

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 Inform atio n Menu Item Description Device Summar y Contains tabs that allow you to: ■ Provide a s ummary of th e Switch’s bas ic settings and ve rsi[...]

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. ■ Modify a VL AN. ■ Modify VLAN membersh ip for a port. ■ Rename 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 a pply a ny ch anges that you have made ■ Canc el – Click to disc ard any unsav ed change s Port S tat us Ther e is an imag e of th e Swi tch’ s[...]

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. T o us e 3Co m Swi tch Dete ct t o conn ect to t he We b inte rfac e of yo ur Swit ch, do the fo llo win g: 1 On the co mputer[...]

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." Y our default W e b br owser will open and co n- n[...]

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 ■ Administ ration Se ttings ■ Conf iguring VL ANs ■ Configuring Po rt Settings ■ Securi ty ■ Monitorin g Configuration Overview The Swi tch i[...]

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. The fields incl ude Product Descriptio n, System Location, Syst em Cont act, Seri al Numb er , Pr oduct 3 C Numbe r , MAC Address, Software V e rsion, Unit Upti[...]

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 ■ Backu p & Rest or e ■ Firmware Upgrade ■ Reset ■ Syst em Access ■ System Name ■ System Ti me ■ SNMP Modifyi ng the IP Address Setti[...]

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. For exam ple, if th e MAC add ress is 08004[...]

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. Figure 20 Restor e Configuratio n 2 Cli ck Brows e to locate the backu p file o[...]

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. CAUTION: Do not interrup t power to[...]

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. Even if yo u do not int end to acti vely manag e the Switch, 3Com reco mmends that you c hange the pas sword to preven t unau thoriz ed acce ss to you r [...]

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 . Figure 25 Re move User Screen[...]

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 . Y ou ca n set the Y ear , Mont h, Day , Hours, Minutes, and Secon ds. Figure 27 System T i[...]

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. Figure 29 SNMP Add Screen SNMP Remove This page allows y ou to r emove c ommunity st rings. Figure 30 SN MP Remove Screen Configuring VLANs A virtual LAN (VLAN) is a collect ion of network nodes[...]

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. This also p rovides for a m ore secure and cl eaner ne twork envi ron ment. Y ou can create u p t[...]

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. Figure 31 Se tup Sc reen Available opti ons on the Set up screen include : ■ VLAN I[...]

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 . 3 Select a membersh ip use. Availa ble opti ons fo r each port incl ude ( onl y one opti on can be as soci ated with a single port): ■ Ta g g e d ■ Unta gge d ■ Not a Member 4 Selec t [...]

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 . Remove Use th e Rem ove scree n to remov e a VLAN . Figure 35 Remove S creen 1 E[...]

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 . Figure 37 VLAN Det ail Scr een Forwar ding T agged/[...]

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. Figure 38 Deskto p VLAN Configura tion If you wa nt to add port s 1, 3, a nd 26 to VLAN2 (as shown in Figur e 38 ), so that t he ports on t[...]

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 . Set one port (for exampl e, po[...]

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. This is th e P[...]

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 2.1D s[...]

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. ■ Path Cost – The pa th cos t is used to de term [...]

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. T wo tabs are av[...]

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. ■ Pack et Rate T hre shold – Sets the br oadc ast sto rm threshold (64 to 1000000 ki lob[...]

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. ■ V oice VLAN Aging Time – Input the ag ing time. Y ou mus t[...]

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. Figure [...]

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 . Figure 52 PoE Sum mary Screen Setup Use the Set up tab to co nfigure the dev ice a[...]

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. If you ne ed to ensu re that critica l devices ge t power whe re you are lik ely to exceed the to tal p ower b udge t avail able , you sh ould c[...]

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. The follo wing op tions are av ailable: ■ Port Sta te – Enabl es [...]

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. For 1000 Mbps co nnecti ons, see “ Speed/D uplex for 10 00 Mbp[...]

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 . If c[...]

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. Figure 58 Lin k Aggregation C r eate Sc reen T o cr[...]

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 . 2 Select the por ts to add to, and /or r emove fr o m, th e goup. 3 Cli ck App ly .[...]

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. Click Port , then Stati stic s on the menu. The P ort St atisti cs Screen appear s.[...]

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 . ■ UDP po rt – The RADI US serv er UDP po rt [...]

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. T he f ollowing fiel ds are availabl e: ■ Syste m Authentic ation –[...]

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. (Ra nge: 1-1024 ; Default: 5) ■ Reauthe nticat ion Perio d – Sets the ti me period after which a connecte d cli[...]

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. The Add ress T ab le me nu inc ludes t wo tabs : ■ Summary ■ Port Sum mary Summary Use the Summary t ab to disp lay[...]

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. T wo tabs a re avai lable on the Po[...]

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 . The C[...]

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. The secon d di git the l ength of the rece[...]

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.3com.com before contact[...]

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. Forgotten Static IP Addr ess If you have forgotte n the s tatic IP address th at you have assign ed to the Switch and yo u need to access the Web interf ace, yo u can [...]

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 . If the connected de vice has autonego tiation dis - abled or overrid den, and is[...]

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. W arrant y and o ther s ervice b enefits are enabled thro[...]

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.3com.com/ , or un der the Product Supp ort headin [...]

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. Kor ea Ta i w a n Thai lan d 1800 075 316 2907 0456 000 800 440 1193 001 803 852 9825 03 3507 5984 1800 812 612 0800 450 454 1800 144 1022[...]

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 gua Argentina Aruba Baha mas Barba dos Bel ize Berm uda Bonair e Braz il Caym an Chile Colombia Costa R ica Curac ao Ecua dor Domi nica n Repu bli c [...]

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 .3ab and IEE E 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D 1 993 (Bridg ing),[...]

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 .3ab and IEE E 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D 1[...]

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 802.3ab an d IEEE 802. 3z (Gigabit Et hernet), IEE E 802.3x (Flow Co ntrol), IEE[...]

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. Figure 71 Cons ole Cabl e Ta b l e 1 [...]

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 Ground RTS DTR CTS DSR DCD Shell 3 2 5 7 8 6 1 4 1 3 2 7 4 20 5 6 8 Cable connector: RJ-45 female PC/T erminal Cable connector: 25-pin male/female on[...]

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 ed as MDI 1 Tr a n s m i t D a t a + Bidi rectio nal Data A + 2 Tr a n s m i t D a t a - Bidi rectio nal Data A - 3 Receive Data + Bidir ectional Da ta[...]

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. Getting Star ted with the Command Lin e Inter face Using the CLI, network m anagers ent er config uration comm ands and pa ra[...]

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. The fo llowin g messa ge is dis played : Concurre nt CLI Sessions The com[...]

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. User Guidelines There are no user guid elines for this comma nd. Example The follow ing dis plays t he list presented for the ? command : Select menu option# ? This command line console al[...]

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. ■ hostnam e — hos tname to ping . (R ange: 1 - 158 charact ers) Default Conf[...]

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. User Guidelines When t he IP address is con figured manu ally by the us er , the ad dre ss must be in th e range [...]

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. The TF TP server I P addr ess a[...]

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. If no r esp onse i s en ter ed wi th[...]

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. Example Passwor d The Pa ssword command c hange s th e user ’ s p asswo rd . Syntax pass[...]

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. This equipme nt generate s, uses and can radi ate[...]

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. 1000BASE -SX I[...]

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. Category 5 Cables One of five gr ades of T wisted Pai r (TP) cabling de fined by the [...]

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. Half duplex is not suppor ted for 1000 Mbp s. Contras t with full duple x. IEEE In[...]

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. Th is is relate d d irectly to the hardw are [...]

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 . SFP Smal l Form Facto r Pluggabl e (SFP) Con nectors are based on an op en standa rd that enables hot swapping of vario us ty pe of f iber op tic an[...]

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 categor y 5 cables 102 categor y 5e cabl es 102 categor y 6 cables 1 02 client 102 config uration overview 3 5 conven tions text , Abou t This Gui de [...]

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 numbe r by F AX, Asi a and Paci fic Rim 81 re setti ng to fa ctory de faults 75 RJ-45 de fined 104 S ser ver de fine d 105 SFP tran sceive rs approve d ([...]