3Com 1000 manual

® http://www.3com.com/ Supe rStack ® II Switch 1000 User Guide Agen t Softw are Versio n 3.1 Docum ent No . DUA16 90-0 AAA05 Pub lis he d Ju ne 1 997[...]

3Com Corpor ation ■ 5 400 Bayfr ont Plaza ■ Sa nt a Cl ar a, Ca li fo r ni a ■ 9 5052-8145 Copyright © 3C om Ir e land , 1997 . All right s reserved. No part o f this doc um ent at ion m a y be repr oduc e d in a ny fo rm o r by any m ean s or us ed to make an y derivativ e work (su ch as tra nslat ion, tr ansformatio n, or ada pt at ion) w [...]

C ONTE NTS A BO UT T HIS G UI D E Int roducti on 1 How to Use This Gu ide 1 Convent ions 2 Rela t ed Doc umentat ion 2 1 G ETTI NG S TA RTED Abou t the Swit ch 1000 1-1 Sum m ar y o f Fe a tur es 1- 1 Port Connecti ons 1-2 10BASE- T Ports 1-2 100BASE -TX Po rt 1- 2 Plug -in Modul e 1-2 T ransc eiver M odu le 1- 2 Backb one Port 1- 2 Swit ch Operat [...]

Confi guration Rules for F ast Et h ernet 2- 2 Confi guration Rules w it h Full Duplex 2- 2 Ins tallin g the Switc h 1000 2-4 Rack M ountin g 2-4 Stac king the Swi tch and Oth er Units 2-4 W all Mounting 2- 5 Pow ering- up the Swit ch 2-6 Conn ecti ng a Redundant Power Sy stem ( RPS) 2-6 Connect ing Equipment to t h e Consol e Port 2-7 Conn ecti ng[...]

How VLANs Ease Ch ange and Mov ement 5- 2 How VLANs C ontrol Bro adcast T raff ic 5-2 Ho w V LA N s Provi d e Ex t ra Se cur it y 5- 2 An Exam ple 5-2 VLANs and t he Switch 5-3 The Def ault VLAN a nd Moving P orts F rom t he Default VLAN 5 -3 Connect ing VLANs to a Route r 5-3 Connect ing Common V LANs Between Switch Units 5-3 Usin g AutoS e lect V[...]

Faul t Log 6-9 Rem ote Po l li ng 6-10 A S AF ETY I NFOR M A TI ON Impor tant Saf ety Inf ormati on A-1 Pow e r Su pp ly an d F u se A- 3 Socke ts for Redundan t Power Sys tem (RPS) A-3 RJ45 Por t s A -3 Fi ber P o rt s A-3 L ’infor mation de Sécuri té Import ante A-4 La Sour ce de Courant et Le Fusib l e A-5 Soc le P o ur Alim en ta ti on Mu l[...]

A BOUT T HIS G UI DE About This Gu ide provi des an overvi ew of this guide, desc ribes the guide conventio ns, tells you where to look for specific information and lists other publications tha t ma y be us eful. In trod uct ion This guide pr ovides the information you nee d to install and configure the SuperSta ck ® II Switch 1000 24 Port ( 3C 16[...]

2 A BOUT T HIS G UIDE Conv e nt ion s Ta b l e 1 and Ta b l e 2 list conventions that are used throughout this gui de. Rel ate d Documen tation The Switch 1000 doc ume nt set incl udes: ■ SuperStack I I Switch 1000 Quick Refere nce Guide . Docum ent Number DQA1690-0A AA0x ■ SuperStack I I Switch 1000 Quick Installation Guide . Docum ent Number [...]

1 G ETTIN G S TARTE D Ab out the Swi tch 1000 Part of 3Com ’ s Sup erStac k ® II ra nge o f products, the Switch 1 000 is designed to ove rc om e the common problem of insuffic ien t bandwidth for today’ s growing network applications, while pr o vid- ing low-cost, high performance networking with little need for configuration. Use the Sw itch[...]

1- 2 C HAPTER 1: G ETTING S TARTED Por t Conn ecti ons 10BASE-T Por ts The Switc h has 12 or 2 4 10B ASE-T po rts co nfig- ur ed as MDIX (cr oss-over) , w hich pro vide a full 10Mbps bandw idth to a ttached endstations. M axi- mum segm ent length is 100m ( 328ft) over grade 3, 4, or 5 twisted pair cable. As these ports are confi gured as MDIX (cros[...]

About th e Switch 1000 1- 3 Switc h Operatio n an d Features How Does th e Switch Co mpare to a Bridge ? The table b elow show s ho w Sw itch 1000 operation compares to that of a c onventional I EEE 802. 1d bridge. In all o ther ways, Switch 1000 and bridge opera- tion is id entic al . Fo rwarding of Pac kets The table below shows how a packet is p[...]

1- 4 C HAPTER 1: G ETTING S TARTED T o best sui t yo ur netwo rking requirements, the Switch 100 0 all ows you to select o ne of four frame forwarding mode s: ■ Fast For war d — Frames are f o rwar ded as soon as the des tinati o n addr ess is r eceived and veri fied. The forwar ding delay , or latency , for all frames in this mode is j ust 40?[...]

About th e Switch 1000 1- 5 For more information abo ut enabling full du plex, refer to “ Setting Up the Switch Unit” a nd “ Setting Up the Switch Ports” in C hapter 4 . Security The Switch 1 000 contains adv anced security fe a- tures which gu ard against users connecting unau- thorized endstations to your net w ork. When security is enab [...]

1- 6 C HAPTER 1: G ETTING S TARTED ■ Redundant paths a re enabled if the m ain traffic paths fail. For m o r e information abo ut STP , re fer to “ Spanning T re e Pr ot oco l” on page 5-12 . PA C E The Switc h 1000 supports P ACE (P riority Access Control E n ab led) technology , which allow s multime - dia traffic to be c arried over standa[...]

Switch 100 0 on Y o ur Network 1- 7 Netw ork Seg men tati on I This e xample shows how the Sw itch 100 0 fits into a large corporate network with a Fast Ethernet infrastructure. A Switch i s po sitioned on each floor and servers ar e centrali zed in the basement. Fig ure 1 -1 Th e Swi t ch 10 0 0 i n a lar g e co rp or a t e net wo r k[...]

1- 8 C HAPTER 1: G ETTING S TARTED Netw ork Seg mentatio n II This exa mple show s the S witch 10 00 i n a second workgroup situation. This setup could be that of a small office within a large corporation, or part of a lar ger corporate n etwork. Most of the switch ports have multip le ends tations. F igur e 1-2 The Swit ch 1000 in a wo rkgro up[...]

Switch 100 0 on Y o ur Network 1- 9 Desk top Swi tchin g This e xample shows Switch 1000 used for a group of heavy-tr affic users in a large corporate network. Here switching i s b rought to the d esktop wi th a single endstation per switc h port. A l ocal server i s connec ted using the 100M bps F ast Ethe rn et link. Fig ure 1 -3 The Sw itch 1 00[...]

1-10 C HAPTER 1: G ETTING S TARTED Unit Overvie w — Fr ont F igur e 1-4 Sw itch 1000 fr ont view : 3C1690 1A top , 3C1 6900A bo ttom[...]

Unit Overvi ew — Front 1-11 10BA SE-T Po rts The Switc h has 12 or 2 4 10B ASE-T RJ45 ports con - figur ed as MDIX (cr o ss-over), which provide a full 10Mbps bandw idth to a ttached endstations. The maximum segm ent leng th is 100m (328ft) o ver cat- egory 3, 4, or 5 UTP cable. As these ports are confi gured as MDIX (cross-over) , you need to us[...]

1-12 C HAPTER 1: G ETTING S TARTED U nit O ver view — Rea r F igur e 1-5 Sw itch 1000 r ear view[...]

Unit Overview — Rear 1-13 Pow er Socke t The Switch 1 000 automatically adjusts to the supply voltage. The fuse is suitabl e for bo th 110 V A.C. and 2 20–240V A. C. operation. For informa- tion on replacing fuses, refer to A ppendix A . Unit Seri al Nu mb er Y ou may need thi s serial number for faul t reporting purposes. Red undant Po wer Sys[...]

1-14 C HAPTER 1: G ETTING S TARTED Unit Defaults The following table shows the factory defaults for the Switch 1 000 features. Manag ing the Swit ch 1000 The menu-dri ven interface built into the Switch 1000 i s know n as the V T100 i nterface. Y ou can access it us ing a VT100 te rminal, or a P C usin g ter- minal emulation software. Y o u can con[...]

Quick St art For SNMP Use r s 1- 15 Quic k Start For SNMP Users This se ction desc ribes how to ge t started if you want to use an SN MP N etwork Ma nager to ma na g e th e S wi t c h. It as su m es yo u a re al read y familiar with S NMP m anagement. ■ If you are using IP and y ou have a BOOTP se rver set up c o rr ec tly on your network, the I [...]

1-16 C HAPTER 1: G ETTING S TARTED[...]

2 I N S T A L L A T I O N A N D S E T U P Follow ing Safety Info rmation Before in stalling or remov ing any components fr om the Switch, or carrying out any maintenance proce- dures, you mus t read the safety in formation pro- v ide d in Appe ndix A of this gui de. P ositi oni ng t h e Sw itch 1 000 The Swi tch is suited for use in the offi ce whe[...]

2- 2 C HAPTER 2: I NSTALLATION AND S ETUP Conf i gu rat io n Ru les for F as t Et her n e t The topology rules for 100Mbps Fast Ether net ar e slightly dif f erent to those for 10Mbps Ether net. Figure 2-1 illustrates the key topology rules a nd pro- vi des examples of how th ey allow for large-s cale Fast Ethernet netwo rks. The key topol ogy rule[...]

C onfigur atio n Rule s wit h Ful l Dupl ex 2- 3 Fig ure 2 -1 Fast Ethernet co nfigura tion rules[...]

2- 4 C HAPTER 2: I NSTALLATION AND S ETUP Ins talling the Switch 1000 Rac k Mounti ng The Switc h is 1 .5U h igh and fits in most standa rd 19 -i nch r acks. CAUTION: Disconnect all cables from the Switch before continuing. Remove all self adhesive pads from the und erside of the unit, if fitted. 1 Place the unit the right way up on a hard flat sur[...]

Inst alling th e Sw itch 1000 2- 5 W all Mounti ng A single Switch can be wal l-mounted. CAUTION: Disconne ct any cables from the unit before continuing . Remo ve self-adhesive p ads from the undersi de of the unit if they hav e been p revi- ously fitted. 1 Plac e the Swit ch the right way up on a hard flat sur - face, wi th the front fac ing towar[...]

2- 6 C HAPTER 2: I NSTALLATION AND S ETUP Po wer i ng -up th e S wi tc h 1 Connect the power cord to the IEC socket on the rear o f th e Sw it ch , an d to yo u r m ai n s s ock e t . The Switc h has no ON /OFF swi tch; the only m ethod of connecti ng o r disconnec ting main s po wer is through the power cord. 2 The Swi tch enters a Power On Self T[...]

Connecti ng Equipme nt to the Conso l e Port 2- 7 Conn e cti n g Equi p men t to th e Cons ole Po rt The Switch console port settings are set to: ■ 8 data b its ■ no parity ■ 1 stop bi t The terminal c onnected to the console po rt on the Switch m ust be configured with the sam e setting s. This procedure is de scribed i n the documentation s[...]

2- 8 C HAPTER 2: I NSTALLATION AND S ETUP Conne ctin g a W orksta tion Runn ing SLIP Y ou c an communicate w ith the Switch v ia the con- sole port from a workstat ion running SL IP (Serial Line Intern et Pr o t o col). In this way , you can pe r form out-of-band managem ent using T elnet or SNMP . Cables required for this connection depend o n the[...]

3 S ETTI NG U P FOR M ANAGEM EN T Met hods of Man aging the Sw itch 1 000 Y ou c an m anage the S witch in four w ays: ■ Using the VT100 interface by connectin g a VT1 00 terminal (or wo rks tation with terminal emulation softwar e) to the Switch cons ole port. ■ Using the VT100 in terface over a TCP/IP netw ork using a w orkstation run ning VT[...]

3- 2 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Usin g T e ln et Any T elnet facility that emulates a VT100 terminal should be able to c omm unicate with the Switch over a TCP/IP network. Up to thre e active T elnet ses- sions c an acce ss the Switc h conc urrently . If a con- nect ion to a T e lne t ses sion is lost inad vert ent ly , the connection[...]

Managing Ove r The Network 3- 3 If your n etwork is inter nal to your orga nization only , you m ay use any a rbitrary IP addres s. We sug- gest you use a ddresses in the series 191.100.X.Y , where X and Y are numbers betwe en 1 and 2 54. Use 191.101. X.Y for the SLIP ad dress. If your n etwork has a co nnection to the exter nal IP net work , yo u [...]

3- 4 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Nav igating th e VT100 Scr eens Screen C on ventio n s T o di ffer entiate types of information, the VT100 scre ens use the following conventions: Ty p e o f informati on Show n on sc reen as... Descr ip tio n Choice Fiel d ♦ text ♦ T ext enclo sed with m ar kers i s a li st from w hi ch you c an se[...]

Navi gating t he VT100 Screens 3- 5 Ke yboar d Shor tc uts Ther e ar e several special charac ters or combinat ions of character s that allow you to make shortcuts. [T ab] allows you to move from one field to the next, on any s creen, without m aking any changes . [Return] mov es you to the n ext fiel d on a form after you have made changes to the [...]

3- 6 C HAPTER 3: S ETTING U P FOR M ANAGEMENT S ett ing U p th e S wit ch fo r Mana gemen t The following section s describe how to get started if you want to us e an SN MP Ne twork Mana ger to ma na g e th e S wi t c h. It as su m es yo u a re al read y familiar wi th SNM P ma nagement. If not, we recom- mend the followi ng publica tion: “The Si[...]

Sett ing Up t he Swit ch f or Manage ment 3- 7 Loggi ng On At the Logon screen displayed in Figure 3-2, enter your user name and passw ord ( no te that they are both case-sensitive ): ■ If you have bee n assign ed a us er na me a nd p ass- wo rd , en te r th o se de t a il s . ■ If y ou are logging on for the first time ( after insta llat io n [...]

3- 8 C HAPTER 3: S ETTING U P FOR M ANAGEMENT After Lo gg ing On When you have successfully logged on to the Switch, the Main Menu sc re en is di sp layed as show n in Figure 3-3. From here, you can s elect the options needed to m a nage t h e uni t. Refer to the scr een map on page 4-1 . If you hav e installed an ATM OC-3c Mo dule into the Swit ch[...]

Sett ing Up t he Swit ch f or Manage ment 3- 9 Swi tch Ma nagemen t S etu p The Managem ent Setup screen allows you to con- figur e IP , IPX and SL IP parameters for t h e Swi tch. This scr een also allow s you to display scr eens for setting u p the console po rt and tra ps. T o acces s the Setup scr een, fr om the Mai n Menu sc reen , selec t the[...]

3-10 C HAPTER 3: S ETTI NG U P FOR M ANAGEMENT If you suspect that there is a prob lem with t he Switch th at has not been detected by the Normal test s, set this field to Extended and reset the Swit ch (r efer to “ Resetting the Switch” on pa ge 4- 27 ). If you set the Switch to perform an Extended test, the Switch m us t be di sconnected from[...]

Sett ing Up t he Swit ch f or Manage ment 3-11 SETUP TRAPS Selec t thi s button to display the setup screen for trap parameters. T rap s etup is de sc ri bed i n “ S etting Up T raps” on pa ge 4-2 4 . CONSOLE PORT Select this button to di splay the setup screen for console port parameters. Console port setup is described in “ S etting Up the [...]

3-12 C HAPTER 3: S ETTI NG U P FOR M ANAGEMENT Loggi ng Of f If you have fin ished using the V T100 managem ent interfa ce, select the LOGOFF option fr om the bottom of t h e Main Menu scr een. If you a ccessed the VT10 0 ma nagement interface usi ng a T e lnet ses- sion or m odem connec tion, the c onnect ion is cl osed automatically . Aut o Logou[...]

4 M A N A G I N G T H E S W I T C H 1000 Chap ters 4 , 5 and 6 desc ribe all man ag emen t facilit ies for the Sw itch 1000. While following steps in these chapters, y ou may find the screen m ap bel ow use ful: F igur e 4-1 Scr een map If an A TM OC-3c Module is installe d i n the Switch, extra s creens are a vailable. R e fer to th e “SuperStac[...]

4- 2 C HAPTER 4: M AN AGING T HE S W ITCH 1000 S ett ing Up Use rs Fr om the Mai n Menu, s elect US ER ACCESS LEVELS. The User Ac c ess Lev els scr een appears as sh own in Fig ure 4-2 . Fr om this screen you c an access: ■ LOCAL SECU RITY scr e en — This allo w s y ou to set up access levels for users on the Switch. ■ CREA T E USE R scr een [...]

Creati ng a New User 4- 3 Cr eating a New User These steps as sume the User A ccess Levels scr een is displayed. 1 Sele c t the CREA TE USER o ption . The Cr eate User screen is di spla yed, as shown in F igure 4-3 . 2 Fi ll in the f ields and assign an access level for the new user . 3 When the form is complete, s elect OK. The Creat e User s c re[...]

4- 4 C HAPTER 4: M AN AGING T HE S W ITCH 1000 Deleting a User These steps as sume the User A ccess Levels scr een is displayed. 1 Sele c t the DELETE USERS option . The Del ete Users screen is di spla yed, as shown in F igure 4-4 . 2 Use the spacebar to highlig ht the user that you want to delete. Note that yo u cannot dele te default users o r th[...]

Editing Use r Det ail s 4- 5 Editing User De t ails These steps as sume the User A ccess Levels scr een is displayed. 1 Sele c t the EDI T USER option. Th e Edit Us er sc reen is displayed, as shown in Figure 4-5 . 2 Fill in the fields as required. 3 Whe n you ha ve com p let ed th e ch ang es , sele ct O K. The Edit U s er s cr een shows the foll [...]

4- 6 C HAPTER 4: M AN AGING T HE S W ITCH 1000 Assigning Local Security The Local Security scr een shows a matrix of options for access method (Con sole Port, Rem ote T eln et, Communi ty-SNMP) and acce ss level. These steps as sume the User A ccess Levels scr een is displayed. 1 Sele ct the L OCAL S ECURITY opti on. The Local Se cu- rity sc reen i[...]

C hoosing a Switc h Management Lev el 4-7 Cho o sin g a Switch M anagem ent Level The Swi tch Management s creen al l ows you to: ■ Choose b etween m anaging a port, the unit, or a VLAN ■ Display screens for setting up the Switch ■ Displ ay a scr een for m a naging the Switch Data- base ■ Displa y scree ns for ma na gi ng res ilient links ?[...]

4- 8 C HAPTER 4: M AN AGING T HE S W ITCH 1000 STP Use this button to display screens for m anagi ng Spanni ng T ree Protocol (STP) information for the level of ma nagement you hav e chosen ( port o r VLAN). Refe r to “ Spanning T ree Proto col” on pa ge 5-12 . STP is not su pported ove r Asynchrono us T ransfer Mode (A TM). Consequently , if y[...]

Sett ing Up the Switch Uni t 4- 9 Setting Up the Swit ch Unit With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Unit , then s elec t t h e SETUP b u tto n. The Unit Setup scre en is displayed as sho wn in Figure 4-10 . Th e s c re en sho ws th e fo ll o w in g : Unit Name This read-only field s hows the type of devic[...]

4-10 C HAPTER 4: M ANAGING T HE S WITCH 1000 PA C E Enable / Di s able Th is field allo ws you to enable or disabl e P ACE (Priority A ccess C ontrol Enabled ) for all po rts on t h e Sw itch. P ACE a llows multimedia traf fic to b e carried over standard Ether- net and Fast Ether net L ANs by providing two fe a- tures: ■ Imp licit C lass of S er[...]

Sett ing Up the Switch Uni t 4-11 SD B Ag eing Ti me This fi eld a l lows you to specify the ageing time (hours:mi nutes) for all non-perma- nent entries i n the Switch Databa se of t h e unit. Y ou can set an ageing time in the range 0 minutes to 277 hou rs, with a defa ult of 30 m inutes. If you enter 0: 0 0, ageing i s t u rned of f. For more in[...]

4-12 C HAPTER 4: M ANAGING T HE S WITCH 1000 S ett ing Up the Swi tc h Port s With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Port . Choose the appr opriate port, th en select the SETUP button. The Port Setup scr een is displayed as shown in Figure 4-11 . If the port is an A T M OC-3c Modul e port, the ATM Port Set[...]

Setti ng Up the Switc h Ports 4-13 IFM is not a v ailable on a port w hich has full duplex enabl ed: ■ If the Duplex Mode fiel d in this screen is set to Full Duplex, the Intelligent Flow Managem ent field is not displayed ■ In all o ther cases where the port has full duplex enabled, IFM has no effect Security Enab le / Disabl e When Securit y [...]

4-14 C HAPTER 4: M ANAGING T HE S WITCH 1000 Duplex Mo de H alf Duplex / Full Duplex / Unit Default This field al lows yo u to specify th e dupl ex mode of th e port: ■ Full Dupl ex — Fu ll d up le x al low s f ra mes to b e transmitted and r e ceived simultane ously and, in effe c t, doubles the potential throughput of a link. In addition, ful[...]

Setti ng Up the Switc h Ports 4-15 Risi ng Ac tion none / event / disable p ort / disable port/n otify / blip / blip p ort/notify Use this field to specify the action for the alarm to take when it r e ache s the r i sing threshold: ■ none — no action t akes plac e ■ event — an SNMP tra p i s generat ed ■ disable port — the po rt is disa[...]

4-16 C HAPTER 4: M ANAGING T HE S WITCH 1000 S ett ing U p th e S wit ch D ata base (S DB) The Swi tch maintai ns a database of devic e addre s ses that i t receiv es on its ports . It u ses the information in t h is da tabase to decide whet her a fra me should be forwarded or filtered. The database hol ds up to a maximum of 500 e ntries; eac h ent[...]

Sett ing Up the Swit ch Dat a base (SDB) 4-17 The Da tabase V iew The Unit D atabase View scr een, a s s hown in Figure 4-12 , allows y ou to view and configure the Switch Data b ase . T o access the Unit Database View scr een, displ ay the Switch M anagem ent sc reen, choo se the m anage - ment leve l Unit , then s elect the SDB button. The Unit D[...]

4-18 C HAPTER 4: M ANAGING T HE S WITCH 1000 INS ERT This button lets yo u insert an entry into the database. Y ou cannot i nsert an entry for a p ort which uses AutoSel ect VLAN Mode. DELETE This button al lows yo u to delete e ntries from the database. Y ou cannot de lete an entry if it is a ssociat ed wit h a port w hich u ses A u toSel ec t VLA[...]

Sett ing Up Re silien t Links 4-19 Settin g Up Resilien t Links Y ou c an co nfigu re a S witc h to p rovide resilien t links to another device so tha t network di sruption is m ini- mize d if a link fail s. A r esi lie nt li nk p air c onsists of a main link and a standby link. Y o u define a resilient link pair by s pecifying the main po rt a nd [...]

4-20 C HAPTER 4: M ANAGING T HE S WITCH 1000 Conf igurin g Resi lient Li nks With the Swit c h Management scr een d ispl ay ed, cho ose the p ort tha t w ill be set u p as t he m a in port in the res ilien t link p air , the n s elec t th e RE SIL- IENCE button. The Port Resilience screen is di sp layed as shown in Figure 4-14 . This scr e en allow[...]

Sett ing Up Re silien t Links 4-21 ■ Both Failed — Although the resilient link is cor- rectl y c onfigured, both l inks have failed. This could be due to loose connectio ns or c abl e dam- age. ■ Un kn o wn — The netwo rk configuration has changed and the resil ie nt link pair no longe r con- forms to the rules. ■ No t Avai lab le — T h[...]

4-22 C HAPTER 4: M ANAGING T HE S WITCH 1000 View ing th e Resili ent Setu p With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Unit an d se le c t t he RESIL IENCE button. The Un it R es ilienc e Sum m ary scree n i s di spla yed a s shown in F igur e 4-15 . This screen sho ws the cur- rent r e silient link c onfigur[...]

Sett ing Up Re silien t Links 4-23 Pair En able En ab l e d / D is a bl e d This r ead-only fi eld displ ays whe the r the resilie nt link pair is current ly enabled or disabled . Y ou ena ble or disable a resilient link pair u sing the Port Resilien ce scr e en described i n “ C onfiguring Resilient Links” on page 4-20 . OK This bu t ton allow[...]

4-24 C HAPTER 4: M ANAGING T HE S WITCH 1000 Set t in g U p T r ap s T r aps are m essage s sent ac ross t he net work to a n SNMP Network Manage r . They al ert t h e network administrator to faults or chang es at the Switch device. Y our Network Manager may automa ticall y s et up tr aps in the Sw itc h T ra p T able. Check the documen- tation ac[...]

Sett ing Up the Conso l e Port 4-25 Set ti n g U p t he Cons o le P or t Fr om the S witch Mana geme nt Setup screen, de sc ri bed i n Chapter 3 , sel ect th e CONSOLE PORT button. The Cons ole Port S etup sc re e n is displayed as sh own in Fig ure 4-17 . If you change any of the c onso le port pa rameters, you terminate any existi n g sessions us[...]

4-26 C HAPTER 4: M ANAGING T HE S WITCH 1000 Speed 1200 / 2400 / 4800 / 9600 / 192 00 This field allows you to select the c o rrect l ine speed (baud rate) for your terminal or modem. If you have enabl ed auto-configuration, l ine speed is set automatically . Char Size 8 Thi s rea d -only field shows the character bit (data bit) si ze for the Switc[...]

Res e tti ng th e Sw i tch 4-27 Res ettin g the Swi tch If you suspec t a problem with the S witch, you can re se t it . 1 Fr om the Main Menu, selec t the RESET option. The Reset scr een is displaye d as show n in Figure 4-18 . 2 Sele c t OK. Rese ttin g the Switc h in t his way is si mila r to p er- forming a power -off/ on c ycle. No setup infor[...]

4-28 C HAPTER 4: M ANAGING T HE S WITCH 1000 Init ializing the Swi tch This scr een allo ws you to perform a res et as described in the previous section, a nd in addition, returns non-volatile data stored on t h e unit to its factory defaults (show n o n page 1-14 ). N ote th at the IP ad dress is not cleared . Y ou should only initia l- iz e the S[...]

Up gr a d in g S of tw ar e 4-29 Up gradin g Soft war e When 3C o m iss ues a new version of agent softw are for the Sw itch, you can obta in it from the 3Com’ s information d elivery syste ms desc ribed i n “ O n line T ech n ical S erv ic es” on pa ge F- 1 . For upgrading the A TM OC -3c Modul e softwar e, refer to the “SuperStack II Sw i[...]

4-30 C HAPTER 4: M ANAGING T HE S WITCH 1000 5 Sele c t OK. During the do wnload, the M GMT L ED flashe s green and the scr een is lo cked. W hen the down load is com plet e, the Sw itch is rese t.[...]

5 A DV A NCE D M ANAG EMEN T Virtual LANs (VLANs) Setting up Virtual Local Area Networks ( VLANs) on the Switch 1 000 prov ides you with less time- consuming network a dministration and mo re ef fi- cient network op eration. The following sec tions e xplain more abou t the c on- cept of VL ANs a nd e xplain how they c an be imple- mented on the Swi[...]

5- 2 C HAPTER 5: A DVANCED M ANAGEMENT How VLANs Ease Chan ge and Movemen t W ith tr a ditional IP networks, network administra- tors spend muc h of their time dealing w ith move s and cha nges. If user s mov e to a different IP sub net, the IP a d dresses of each endstation must be updated m anually . W ith a V LAN setup, if a n endstation in VLAN[...]

Vir tual LANs (VLANs) 5- 3 VLAN s and the Switc h The Switch 1000 supports VLANs which con sist of a set o f switch ports. Each switch port can only belong to o ne VL AN a t a time, r egardless of the device to which it is attached. Each Sw itch 1000 can supp ort up to 16 VLA Ns. However , you can have more than 16 VLA Ns in your entir e network by[...]

5- 4 C HAPTER 5: A DVANCED M ANAGEMENT AutoSelect VLAN Mod e works as follows: 1 When an endstation is co nnected to a Sw itch or moves from one p ort to ano ther , the Switch lear ns the MAC address of the endstation. F igur e 5-2 Swi tch learns the en dstation ’ s MA C addres s 2 If the relevant port uses AutoSelect VLAN Mode, t he Switch int e[...]

Vir tual LANs (VLANs) 5- 5 For information abo ut how to set up VLANs using AutoSelect VLAN Mod e, r e fer to Chapter 5 on page 5-11 . For m o r e in formation about the VLA N Server data - base, r efer to the documentation suppl ied with 3Com’ s T ranscend Ente rprise Manager . Us ing N on- ro uta bl e P ro toc ols If you are running non -routab[...]

5- 6 C HAPTER 5: A DVANCED M ANAGEMENT Examp le 2 The exampl e shown in Figure 5-6 illustrates two VLANs spanni ng two Sw itch 1000 units. VLAN 1 is able to talk to V LAN 2 using the connection between ea ch V LAN a n d the r outer . Ports withi n the same VLAN but on diff erent Switche s com municate using the V L T . T o se t up thi s configurati[...]

Vir tual LANs (VLANs) 5- 7 Examp le 3 The exampl e shown in Figure 5-7 illustrates two VLANs spanni ng three Switch 1000 un its and a basement Switc h 300 0 FX with a Plug-in Module. Each Switch 1000 connects into the basement Switch u sing a VL T . The attached rout er allows the two VL ANs to com municate w ith eac h other . T o se t up thi s con[...]

5- 8 C HAPTER 5: A DVANCED M ANAGEMENT Setting Up VLAN s on the Switch The VLAN Setup scr een allows you to: ■ Assign ports t o VLANs, if those ports use Port VLAN Mode ■ Define a backb one port for ea ch VLAN ■ View VLAN s etup information for the Switch T o acc ess the VLAN Setup scr een: 1 From t he Ma in Me nu , select SW ITC H MA NAG E- [...]

Vir tual LANs (VLANs) 5- 9 ■ Au t oSe l ec t — The port us es AutoSelec t V LAN Mode. For more in formation about AutoSe- lect V LAN Mode, r e fer to “ U sing AutoSel ect VLAN Mode” on page 5-3 . For i nformation about how to configur e VLANs usin g AutoSe- lect V LAN Mode, r e fer to “ Settin g Up VLANs Us in g Au t oSe l ec t V LAN M od[...]

5-10 C HAPTER 5: A DVANCED M ANAGEMENT Assigning a Port to a VLAN Wh en Using Po rt VLAN Mode 1 In t h e Port ID field , enter the ID o f th e requ ir ed port. 2 In t h e VLAN ID field, enter the ID of the required VLAN . 3 Sele ct APPL Y . CAUTION: Initia ll y , a ll Swi tch p ort s belo ng to th e Default VLAN (VLAN 1). This VLAN is the onl y one[...]

Vir tual LANs (VLANs) 5- 11 Setti ng Up V LAN s Us ing A uto Se lec t VLA N Mo de T o se t up VLANs using AutoSelect VLAN M ode, you need to: ■ Specify i nfo rmation about the VLAN Server ■ Speci fy that the Switch unit, or individual p ort s on the unit, use AutoSelect VLAN Mo de Specifying Info rmatio n About t he VLAN Server The VLAN Ser ver[...]

5-12 C HAPTER 5: A DVANCED M ANAGEMENT Spann ing T r ee Proto col Using the Spanni n g T ree Pr oto col (STP) function ality of your Switch makes your network more fault toler- ant. The foll o wing sect ions explai n m or e about STP and the STP feature s supported by the Switch. STP is no t currently supported over an A synchronous T ran sfer Mode[...]

Spannin g T ree Pro tocol 5-13 F igur e 5-1 0 A netwo rk configu ration tha t create s loops. F igur e 5-1 1 T raffi c flowin g throu gh Bridge s C and A Fig ure 5 -12 T ra ffic flow ing thr ough Bridg e B[...]

5-14 C HAPTER 5: A DVANCED M ANAGEMENT How S TP Wo rks STP Initializ ation Initi a lly , the STP sy stem require s the fol lowin g b efore it can c onfigure the netwo rk: ■ Communi cation be tween all the b ridges. This communic ation is c arried out using Brid ge Proto- co l Data Units (B PDUs) , which are tr ansmit ted i n packets with a known [...]

Spannin g T ree Pro tocol 5-15 An Example Figure 5-13 illustrate s part of a network. All bridges have a path cost v alue ass igned to e ach port, identi- fi ed b y PC=xxx (whe r e xxx i s the va lu e). Bridge A is selec ted by STP as the Root Bri dge, becau se it has the lowest Bridge I dentifier . The Des- ignated Bridge P ort for LAN A is port 1[...]

5-16 C HAPTER 5: A DVANCED M ANAGEMENT STP C onfi guration s Figure 5-14 shows two possible STP confi gurations using Supe rStack II Swi tch units: ■ Confi gu rati on 1 — Re dun dan cy fo r B ack - bone Lin k In t h is confi g uration, a Swit ch 1000 and Sw itch 3000 TX both h ave STP enabled and are con- nected by two Fast E ther net links. ST[...]

Spannin g T ree Pro tocol 5-17 Enab ling STP on th e S witch T o enab le STP on your Switch: 1 Fr om the VT10 0 Ma in M enu, selec t SWITC H MA N- AGEMENT . The S witch Managemen t sc reen is d is- play ed. 2 In t he Mana gement Level fi eld, choose Unit. 3 Choos e the SETUP button. The Unit Setup sc reen is displayed, as shown in Figure 5-15 . 4 I[...]

5-18 C HAPTER 5: A DVANCED M ANAGEMENT Conf iguri ng ST P on the Swi tch CAUTION: Y o u should not configu re any STP parameters unl ess y ou ha ve consi derable know l- edge and experi ence with STP . Configu ring the STP Pa ramete rs o f VLANs The Switch h as a completel y s e parate STP s ystem fo r each VL AN th at you have s pecified. Each V L[...]

Spannin g T ree Pro tocol 5-19 Forward Delay 4... 30 This read-onl y fiel d shows the time ( in se conds) tha t the po rts on the Swi tch spend in the li s tening and learning states. For mor e informat ion abo ut these states, r efer to “ Configur- ing the STP Para meters of Ports” on pa ge 5-20 . Root P or t This read-only field sh ows the Ro[...]

5-20 C HAPTER 5: A DVANCED M ANAGEMENT Configu ring th e STP Pa ramete rs of Port s The Port STP scr een allows you to set up and manage the STP parameters of each port on the Switch. T o a ccess th e Po rt STP s cr een: 1 From t he Ma in Me nu , select SW ITC H MA NAG E- MENT . The S witch Ma nagem ent sc reen is di splayed. 2 In t he Mana gement [...]

Spannin g T ree Pro tocol 5-21 Designated Roo t This read-onl y field s hows the Bridge Identifier o f the Roo t Bri dge. Designated Cos t This r ead-only field shows the path cost from the Root Bridge to the Desi gnated Bridge Port for the c urr ent p ort ’ s segment. Desi gn ated B ri dge This r ead-only field shows the Bridge Identifier o f th[...]

5-22 C HAPTER 5: A DVANCED M ANAGEMENT RMON Using the RMON ( Remote Moni toring) capabi lities of your Switch allows network administrators to impr ove their ef ficienc y and reduce the load on their network. The foll o wing sect ions explai n m or e about the RMON c oncept a nd the RMON fea tures supported by th e Sw itch. Y ou can only use the RM[...]

RMON 5-23 Abou t the R M ON Gr oups The IETF define n ine gr o ups of E thern et RMON sta- tistics. This section describes these groups, and details how they can b e used. Statist ics The Statistics group provides tra ffi c and e rror statis- tics show ing packe ts, bytes , broadcasts, mu lticasts and err ors on a LAN segment or VLAN. Information f[...]

5-24 C HAPTER 5: A DVANCED M ANAGEMENT Matrix The Matrix group shows the amount of traf fic and number of e rrors between p airs of devices on a LAN segmen t or V LAN. For each pair , the Matrix group maintain s counters of the numb er of pa ckets, number of octets, and e rror packets between the nodes. The convers ation matrix helps you to examine[...]

RMON 5-25 Be ne fi ts o f RM O N Using the RMON f eatures of your S witch has thre e mai n advantages : ■ It improves your ef ficiency ■ It allows you to m anage your network i n a more proactive manner ■ It reduces the load on th e network and the man- agemen t workstati on How R M ON Im prove s Y our Eff icien cy Using RMON pr o bes allows [...]

5-26 C HAPTER 5: A DVANCED M ANAGEMENT RM ON a nd the Sw i tch RMON requires on e probe pe r LAN segment, a nd stand-alone R MON probes ha ve traditionally b een expen sive. Therefor e, 3Com ’ s appr o ach h a s been t o build an inex pensive RMON pr o be into the Smart- Age nt of each Switch. Th is allows RMON to be widely deployed a round the n[...]

RMON 5-27 W hen using the RMON features of the Sw itch, you should note the following: ■ After the default sessi ons ar e cr eated, they ha v e no spe cial s tatus. Y ou c an delete or change them a s required. ■ The Switch 1000 can forward a very large volum e of pac kets per sec ond. The Statistic s R MON group is abl e to moni tor every pack[...]

5-28 C HAPTER 5: A DVANCED M ANAGEMENT Ab out A larm Ac tio ns Y ou c an d efine up to 700 a larms for the Switch. T he acti ons that you can define for each alarm ar e shown in Ta b l e 5 - 3 . Ta b l e 5 - 3 Ala r m Ac ti ons Act ion H i gh T hres h old Low Th reshol d No ac t ion . Notify only . Sen d T rap . Notify and blip port. Send T rap. B [...]

RMON 5-29 About Defau lt Alarm Settings A new or i nitialized Sw itch has fou r a larms defined for each port: ■ Bandwidth us ed ■ Broadcast bandwidth used ■ Per centage of packets forwar ded ■ Errors per 10,000 p ackets The default values f o r eac h of these ala rms ar e given in Ta b l e 5 - 4 . Ab out the Au dit Log The Switch ke eps an[...]

5-30 C HAPTER 5: A DVANCED M ANAGEMENT[...]

6 S TA TUS M ON ITORIN G AND S TA TI STI CS This c hapter des cribes how to v iew the c urrent operating s tatus of the Switc h 10 00, how to dis- play any err or information in a fault l og and how to carry ou t a remote pol l to ch eck the response of another network de vice. It also describes the Statisti cs scree ns for the Switch 1000, and adv[...]

6- 2 C HAPTER 6: S TATUS M O NITOR ING AND S TATI STICS Sum m ary St atistics With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Unit , then s elec t t h e ST A TISTICS button. The Summary Statisti c s scr een i s displayed, as shown in Figure 6-1 . The Summary Stat i stic s screen lists valu es for the curr ent coun [...]

Port St atisti cs 6- 3 Por t Statistic s With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Port , then sel ect the ST A TISTICS b utton. The Port Statistics s cr een is d is- played, as shown in Figure 6-2 . As well a s showin g stat i stics for the port, the Port Statis tics sc reen allows you access to traffic and [...]

6- 4 C HAPTER 6: S TATUS M O NITOR ING AND S TATI STICS Por t T r af fic Statisti cs With the Port Statis tics scr een d ispl ayed, select the TRAFF I C ST A TISTI CS button. T h e P o r t T raf fi c Statistics screen is di spla yed, as shown in F igure 6-3 . The Port T raf fic Statisti cs screen shows the follow- ing: Port ID The ID of t h e port [...]

Port T raf fic St atisti cs 6- 5 Frag me nts The total number of packets r ec eived that wer e not an integral number of octets in length or that had a bad Fram e Check Sequenc e (FCS), and were less than 64 octets in length ( excluding fram- ing bits, bu t i ncludi ng FC S octets). Frames Forw arded The total numb er of frames which wer e r e ceiv[...]

6- 6 C HAPTER 6: S TATUS M O NITOR ING AND S TATI STICS Port Erro r A na lys is With the Port Statis tics scr een d ispl ayed, select the ERROR ANAL YSIS button. The P ort Error A nalysis screen is di spla yed, as shown in F igure 6-4 . The Port Err or Analysis scr een sh ows the follow ing: Port ID The ID of t h e port you are c u rre n tly manag-[...]

Port Er ror An alysi s 6- 7 Jabbers The t otal number of packets received that were longer than 8K octets (excluding framing bits, but including FCS o ctets). CLEAR SC REEN CO UNTER S Select this button to set all co unters sho wn on the screen to z ero. It is useful for tr e nd analysis if you wish to see cha nges in counters over a short pe riod [...]

6- 8 C HAPTER 6: S TATUS M O NITOR ING AND S TATI STICS S tat us M oni torin g The status s cr een provid es read -only info rmation about the S witch 100 0. This i nformation may be useful for y o ur T ec hnical Support r e presentativ e if you have a pr ob lem. T o acc ess the screen , fro m the Main Menu, selec t the ST A TU S option. The Status[...]

Fau lt L o g 6- 9 Fault Lo g The Fault L og display s read-only information a bout the Swi tch which is updated whenever an abnor- mal co nd ition is dete cte d. Th is infor m atio n is for internal 3C om u se only . Y ou may be asked to quote this i nformation if reporting a fa ult to your supplier . With the Status s creen dis played, select the [...]

6-10 C HAPTER 6: S TATUS M ON ITOR ING AND S TATISTI CS Rem ote Pollin g The Remote Poll scree n allows you to send a s ing le fr ame to a remote dev ice to see i f that devic e is responding. This can help to lo cate the s ource of a network problem. It is also particularly helpful in locating dev ices that su pport IP , IPX and ping but are not m[...]

A S AFE TY I NFO RMA TION Y ou m ust read the following safety information before carrying out any installation or removal of compon ents, or any m aintenance procedures on the Switch 1 000. Impo r tan t Safety Inf o rmatio n WARNING: Warnings contain directions that you must follow for yo ur personal safety . Follow al l instructions c arefully . [...]

A-2 A PPENDIX A: S AFETY I NFORMATION ■ It is ess ential that the mains socket outl et is installed near to t h e unit and is a ccessi ble. Y o u can only disconnect the unit by r emoving the appliance c oupler from the uni t. ■ If the power s upply p lug is u nsuitable and you have to replace it , yo u may find other codings for the respective[...]

Impor tant Sa fety In form atio n A-3 Pow er Su pply and Fuse The unit automatical ly adjusts to the su pply volt- age. Th e fuse i s suita ble for both 1 10V A.C. a nd 220–240V A .C. operation. WARNING: Ensure that the power is disconnected before openin g the fuse hol der co ver . T o change the fuse, release the fuse hol der by gently levering[...]

A-4 A PPENDIX A: S AFETY I NFORMATION L ’informat io n de Sécur ité Importan te A VERTISSEMEN T : Les avertissem ents contiennent les directions que vous dev ez suiv re pour votre séc u- rité personnel le. S uivez toutes les directives avec soin. V euillez lire à f ond l'informat ion de la sécu rité sui va- nte avan t d' install [...]

L ’infor m ati on de Sécuri té Impor t a nte A-5 ■ Assurer que l'e ntrée de la source d'alime ntation soit débranchée avant d'ouvrir le couvercle de fusible du conn ecteur IEC o u d'enlever le c ouver- cle de l'uni té. ■ Seulem ent Pour La France et Le Péro u: ■ Cette unité ne peut pas être mise en marche d[...]

A-6 A PPENDIX A: S AFETY I NFORMATION Les Po rts RJ45 Ceux-ci son t les prises de courant de d onnées R J45 protégé es. Ils ne pe uven t pas être ut ilisés comm e prises de c ourant téléphoni ques. Brancher s eule- ment les c onnec teurs RJ45 de d onnées à ces prises de courant. Les câbles de données blindés ou non blindés, ave c les j[...]

Wich tige Siche rheitsi nformati onen A- 7 Wi cht ige Si ch erhe i ts inf or mati o nen WARNUNG: Warnunge n enthalten Anweisungen, die zur eig enen Siche rheit unbedingt z u b eachten sind. Bitte befolgen Sie alle Anweisu ngen sorgfältig und genau. Bitte unbed ingt vor dem Einbaue n des S witch 1000 Einheit d ie folgende n Sicherhe itsanweisunge n[...]

A-8 A PPENDIX A: S AFETY I NFORMATION St r omvers orgung und Siche run g Das Gerät stell t sich automatisch auf die V ersor- gungsspa nnung ein. Die Sicherung ist sowohl für 110V A .C. wie für 220–240V A. C. geeignet. WARNUNG: V or dem Ö ffnen der Sicherungsha lter- ung da s Gerät v om Ne tzstrom trennen. Zum Auswec hseln der Sicherung durch[...]

B S CR EEN A CC E S S R IGH TS The foll o wing table lists the righ ts assigned to each level of us er for ac ce ssing and editing Switch 1000 scre ens via the V T100 interface. All ac cess rights ar e r e ad-and-write unless othe r- wise sta ted. Sc reen A vailabl e to.. . Logon M onitor Mana ger Secu rity Ma in Men u Mo n it or Mana ger Secu rity[...]

B-2 A PPENDIX B: S CREEN A CCESS R IGHTS VLAN STP Mon itor read-on ly Mana ger Secu rity VL AN Server Mon itor read-on ly Mana ger Secu rity VLAN Set up Mon itor read-only Mana ger Secu rity User A ccess Leve ls Mon itor Mana ger Secu rity Local Security Secu rity Crea te User Secu rity De lete Users Secu rity Edi t User Mon itor Mana ger Secu rity[...]

C T R O U B L E - S H O O T I N G The follo wing is a l ist of problems you ma y see when managi ng the Switch w ith su ggested c ourses of correc tive acti o n to take. If you have a problem which is not li sted here an d you c annot solve it, please contact your l ocal technical support r e presen- tative. LEDs Power LED do es not light: Check th[...]

C-2 A PPENDIX C: T ROU BL E - SHOOTING Usin g t he VT1 00 Interface Th e initi al Main Bann er scr een does no t disp lay : Check that your terminal or terminal emulator is corr ectly con f igured to operate as a VT100 terminal. For cons ole port a ccess, yo u ma y nee d to press [Return] several times befor e the Main Banner appears. Check the set[...]

Using the Switch C-3 T ry accessing the device through a dif ferent port. If you can now access the de vice, a problem w ith the original port i s indicated. Re-examine the connec- tions and cabling. There may b e a network problem pr eventing you accessing the device over the network . T ry access- ing the device t h rough the console port. Y ou f[...]

C-4 A PPENDIX C: T ROU BL E - SHOOTING Y ou ha ve adde d the Sw itch 100 0 to a n already busy net work, a nd respo ns e t imes a nd traffic levels h ave increased: Y ou ma y have added a gr ou p of users to one of the Switch 100 0 po rts via a repeater or switch, and not turned of f IFM. T u rn of f IFM on any port that is con- nected to multiple [...]

Using the Switch C-5 T o avoid this situation, we r e com mend that you connect the two S uperStack II Switch units using a Virtual LAN T r u nk (VL T) . For m or e information about VL T s, refer to “ C on necting C ommon VLAN s Between Sw itch Units” on page 5-3 . Fig ure C-1 Networ k conf igur atio n that res ults i n l oss of conta ct[...]

C-6 A PPENDIX C: T ROU BL E - SHOOTING[...]

D P IN - OU TS Nu ll Modem Cable 9-pin to RS-232 25-pi n PC-A T Serial Cabl e 9-pin to 9-pin[...]

D-2 A PPENDIX D: P IN - OUTS Mod em Ca ble 9-pin to RS-232 25-pi n RJ45 Pi n Ass ignme nts Pin as signmen ts ar e ident ical for 10BASE-T an d 100BA SE-TX RJ45 connectors.[...]

E S WITCH 10 00 T ECHN ICAL S PECIFICATION S Phys ical Dimensions Heig ht: 76mm (3.0i n.) x Width: 483 mm (19. 0in .) x Depth: 300m m ( 12.0 in.) Weig ht: 4.4kg (9. 7lbs) Envi ronm ental R equi reme nts Operati ng T empera tur e 0–50° C (32–1 22°F) Stor age T emperatu re -10– 70°C (14 –158°F) Operati ng Hum idity 10–95% rela tive hu m[...]

E-2 A PPENDIX E: S WITCH 1 000 T ECHNICAL S PECIFI CATIONS Sta ndar ds Supp orted SNMP SNMP pr otocol (RF C 1157 ) MIB-I I (RFC 12 13) Brid ge MIB (RFC 149 3) Repeat er MIB (RFC 1 516) V LAN MI B ( RFC 15 7 3) RMON MIB (R FC 1271 and RFC 1757) T ermin al E mulatio n T elnet (RFC 854) Prot oc o ls U se d fo r A dm ini s tra t ion UDP (RFC 7 68) I P [...]

F T ECHNI CAL S UPPORT 3Com provides easy access to t e chnical support information through a variety of ser v ices. This appendix describes th ese services. Information contained in t h is appendix is c o rre c t at time of pu blication. F or the very l atest, we recom- mend tha t you ac cess 3Com Corporation’ s World W ide Web site. Onlin e T e[...]

F- 2 A PPENDIX F: T ECHNI CAL S UPPORT Acc ess by Di gital Mo dem ISDN use rs can dial i n to 3ComBBS using a digi tal modem for fast access up to 56 Kbps. T o acces s 3ComB BS using I SDN, use the followin g number : (1) 408 654 2703 3ComF acts A utom ate d Fax Servic e 3Com Corporation’ s interactive fax serv ice, 3ComFacts, p rovides data s he[...]

Suppor t from Y our Ne twork Suppli er F-3 S uppor t f ro m Y o ur N et work Supp lier If addi tional a s sistance is r e quir ed, contact your network su pplier . M any s uppliers are authorized 3Com service partners who are qualified to provide a variety of service s, including ne two rk planning, insta llatio n , hardware main ten anc e, ap plic[...]

F- 4 A PPENDIX F: T ECHNI CAL S UPPORT R eturni ng Pr od uc ts for Re pair Before you sen d a p roduct dire c tly to 3 Com for repair , you must first be obtain a Re turn Materials Authorization (RMA) num ber . Products sent to 3Co m wi th out R MA n um ber s w ill b e retu r ned to the sender unopene d, at the se nder’ s expe nse. T o obta in a [...]

G LOSSAR Y 10BASE-T The IEEE 80 2.3 specific ation for Ether net over Unsh ielde d T wisted Pai r ( UTP) cab ling. 100BASE-FX 100Mbp s Ethern et im plemen tation over fiber . 100BASE-TX 100Mbp s Ethern et im plemen tation over Category 5 and T ype 1 T w isted Pair cabling. ageing The automatic r emoval of dynami c entri es fr om th e Switch Databas[...]

2 G LOSSARY bridg e A device tha t interc onne cts local or remo te net- works no matter what higher leve l pr otocols ar e involved. Bridges form a single logic al network, cen- tralizi n g netw ork administration. broad cast A message sent to all destination devices on the network. broad cast s to rm Mult ipl e simult an eous broad cas ts th at t[...]

G LOSSARY 3 I ntell igent S wit ching Mode A packet forw arding m ode, where th e Switch m oni- tors the am ount of e rror traf fic on the netwo rk and changes the method of pac ket forwarding accord- ingly . IPX Internetwork Packet Excha nge. A protocol allowing communica tion in a NetWar e netwo rk. IP a d dre ss Internet Protocol a ddress. A uni[...]

4 G LOSSARY protoco l A set of rules for c o mmunication betwe en devices on a network. Th e ru les di c tat e format, timing, sequenc ing and e rror control. resili ent link A pair of ports tha t c an be configured so that one will take over data transmission should the other fail. See als o mai n port an d standby port . RJ4 5 Standard 8-wire co [...]

G LOSSARY 5 swi tch A devi ce which fil ters, forwards and floo ds fram es based on the fram e’ s destin ation address. The swit c h lea r ns the addres ses ass ociated w ith e ac h switch port and builds tables based on this informa- tion to be use d for the sw itching decisi on. TCP/IP A layered set of c o mmunications protoc ols providing T el[...]

6 G LOSSARY[...]

I NDE X Numerics 100B ASE-TX port 1- 2, 1-11 10BA SE-T por t 1-2, 1-11 3Com Bulleti n Boar d Servic e (3 ComBBS ) F-1 3Com sal es off ices F- 3 3C om U RL F-1 3C om F act s F - 2 3C om Fo ru m F -2 A Acce ss Level field 4-3 acces s rights B-1 Activ e Port fi eld 4-21, 4 -22 agei ng en tries 4-16 agei ng tim e , speci fyin g 4-11 ag e nt s o ft w ar[...]

2 I NDEX r esetti ng to z ero 6-2, 6-5 , 6-7 Short E vents (po rt err or) 6-6 Cr eate Use r scre en 4-3 D Data Link Pr otocol field 3-10 dat a ba se. See Sw itch Dat abase DCD Con tr ol fiel d 4-2 5 def a ult pas sword s 3-7 set tings 1- 14 users 3-7 Defau lt RMON Host/Matr ix field 4-11 Defau lt Router fie ld 3-10 Defau lt VLAN 5- 3, 5-9 Delet e U[...]

I NDEX 3 Standb y Links A vai labl e 4-20 ST AN DBY Por t 4-22 Standb y Port ID 4-20 Stop Bi t 4-26 STP Sta te 5-20 sys Name 4-9 Sys tem Up T ime 6-8 Thr ottle 4-24, 5- 11 T i me Sin c e T opo l o gy Ch a n ge 5- 19 T opo lo gy Cha n ge s 5 - 18 T r ansceive r Modul e T ype 4-11 T ype 5- 8 Uni t Name 4-9 Use r Name 3-7, 4- 3 VLAN C onfigur ation Mo[...]

4 I NDEX perm anent entrie s 4-16 disp layi ng 4-17 speci fy ing 4-17, 4- 18 pi n assign ments mo dem cab le D-2 nul l modem cable D-1 RJ45 D -2 se ri a l ca b le D -1 pin - ou ts D - 1 Pl ug-i n Modu le 1-2, 1-1 3 Pl ug-i n Modu le T y pe field 4- 11 Pol l Pe ri od fi el d 5 - 11 por t 100BAS E-TX 1-2, 1 -11 10BASE -T 1-2, 1-11 backbo ne 1-2, 5-8,[...]

I NDEX 5 s erial por t. See con sol e por t Serve r Addr ess fiel d 4 -29 s ervers, c onnectin g 1-6 SLIP A ddre ss field 3-10 SLI P Su b net Ma s k f iel d 3- 1 0 SNMP 1-14, 3-6 Commu nity 4- 6 qui ck start 1-15 so ck et power 1-1 3 RPS 1- 13 Softw are U pgrade scree n 4-29 s oftwar e versio n numb er 6-8 Spann ing T ree fiel d 4-11 Spann ing T re[...]

6 I NDEX edi ting 4-5 set ting up 4-2 V ver s io n nu m be r boot so ftw ar e 6 -8 h a rdw a re 6 - 8 upgrad able soft w ar e 6- 8 Virtua l LAN T runks. S ee VL T s Virtua l LANs. See VLANs VLAN Config uration M ode fie ld 4-10, 4-14 VLA N I D fie ld 5 -9, 5-1 8 VLAN Membersh ip fi eld 5-9 VLA N s e rve r 5 -3 VLAN Server Community String f ield 5-[...]

3C om Cor por ati on L IMITED W ARRANTY H ARD WAR E 3Com w arr ants its ha rdw a re pr od uc ts to b e fre e from d e fec ts in w ork m ans hi p and mate ri als , und er no rma l u se an d se rvice , for th e fol low in g len gth s of ti me fro m the da t e of purch ase from 3Com or its Authorized Resel ler: If a product does not operate as warrant[...]

E LECTRO -M AGN E TIC C OMPATI BILI TY FCC S TA TEMEN T This eq u ipment has been tested with a class A comput ing device a nd has been found t o com pl y wi th pa rt 15 of FCC Rul es. O p eratio n in a resid e ntia l are a ma y cau se unacceptable i nterference to r adio and TV receptions, requi r ing the operator to t ake whatever st eps are n ec[...]