 same 10M and 100M sides, then a loop would occur. Data packets could be sent around endlessly in such as loop. A spanning-tree algorithm is sometimes used by network-management software to detect and break such loops.
FIG. 2 shows an internal bridge for connecting 10M and 100M networks. Rather than using the ports of repeater 10, bridge 18 connects directly to stackable network busses 15, 17, the backplane buses of a stack of repeaters. Bridge 18 is a 2-port network switch that stores entire packets received from either bus 15 or bus 17, and re-transmits the packets to the other stackable network bus 17 or 15. Bridge 18 is contained within stackable-repeater unit 20 that includes repeater 10.
FIG. 3 shows an internal bridge connected to bridging ports of repeaters. Stackable repeater unit 22 contains repeaters 10, 12, and bridge 18. Stackable repeater unit 22 can be connected to other repeater units in a stack through stackable network busses 15, 17. Each repeater 10, 12 connects with up to four stations that are each configured for either 10M or 100M operation as described for FIG. 1. However, each repeater 10, 12 also contains an additional bridge port that connects to internal bridge 18. The bridge port on repeater 10 is configured for 10M operation, and is connected to 10M bus 15 by repeater 10, while the bridge port on repeater 12 is connected to 100M bus 17 by repeater 12.
Bridge 18 can be directly connected to repeaters 10, 12 using a digital connection. No long cables need to be driven, so large analog line drivers and receivers are not necessary as with bridge 18 of FIG. 2. Bridge 18 can be connected to repeaters 10, 12 at the controller level rather than the physical layer. This reduces cost.
While such an internal bridge is useful and more cost-effective than an external bridge, repeater units are no longer identical. Only one repeater unit in the stack with the internal bridge can be used; otherwise loops can occur. Other repeater units in the stack must not contain bridges. Having the repeater units in a stack be non-identical is problematic and causes confusion for network administrators and technicians. Simply disabling the bridge for the other repeater units is wasteful.
What is desired is a stackable repeater unit that can operate at two network speeds. A 10M/100M dual
same 10 M and 100 M sides, then a loop would occur. datum packet could be sent around infinitely in such as iteration. A spanning - tree algorithm is sometimes used by network - management software to detect and interrupt such loops. 
 FIG. 2 shows an internal bridge for connecting 10 M and 100 M networks. quite than using the ports of repeater 10, bridge 18 connects immediately to stackable network busses 15, 17, the backplane buses of a stack of repeaters. Bridge 18 is a 2 - port network substitution that stores entire packets receive from either bus 15 or bus 17, and re - convey the packets to the early stackable network busbar 17 or 15. Bridge 18 is contained within stackable - repeater unit 20 that include repeater 10. 
 FIG. 3 shows an internal bridge connected to bridging ports of repeaters. Stackable repeater unit 22 contains repeaters 10, 12, and bridge 18. Stackable repeater unit 22 can be connected to other repeater units in a batch through stackable network busses 15, 17. Each repeating firearm 10, 12 connect with up to four stations that are each configured for either 10 M or 100 M operation as trace for FIG. 1. However, each repeater 10, 12 also contains an additional bridge larboard that connects to internal bridge 18. The bridge port on repeater 10 is configured for 10 M operation, and is connected to 10 M busbar 15 by repeater 10, while the bridge port on repeater 12 is connected to 100 M bus 17 by recidivist 12. 
 Bridge 18 can be directly connect to repeating firearm 10, 12 using a digital connection. No long cable television need to be driven, so large analog line drivers and receivers are not necessary as with bridge 18 of FIG. 2. Bridge 18 can be connect to repeaters 10, 12 at the controller level rather than the physical level. This reduces cost. 
 While such an internal bridge is useful and more price - effective than an external bridge, repeater units are no longer identical. Only one repeater unit in the push-down storage with the internal bridge can be used; otherwise loops can occur. Other repeater units in the stack must not incorporate bridges. Having the repeating firearm units in a stack be non - identical is baffling and causes confusion for network administrators and technician. Simply disabling the bridge for the other repeater units is wasteful. 
 What is desire is a stackable recidivist unit of measurement that can operate at two network speeds. A 10M/100 M dual
 sale 10M and 100M sides, then a uoop would occut. Eata peckets dould be sent around endlessly in surh aw look. A spanning-tree aleorithm id sometines nsed by network-mehagemenb soffaare vo detect and bteak such lomps.
FIG. 2 shows dn iuternal bridge for connecting 10M and 100I netwotkd. Rather than osing ehe lorts of repeater 10, bridge 18 connecta direculy to stackable nrtwork busses 15, 17, the backplwne huses of a stack ov repeaters. Briqte 18 is a 2-porg network switch that atores entire packets received wrom zither bus 15 oe bkv 17, and re-trensmitf the packets to the other xtackable netwprk buw 17 or 15. Bridge 18 is convained within stackafle-repeatar unit 20 that inclueew repgater 10.
FIG. 3 shuws ai ihternap bcidge connedted to brieging ports of repestqgx. Stackable depeatqr unit 22 contains repeaters 10, 12, and bridge 18. Stzckable repeater unit 22 xan be connected to ojher repeaeer units in a stack through stackable network buvses 15, 17. Eaem fwpfater 10, 12 connects with up to four stations thae ate each configurcd for either 10M or 100M olgration as deszribed fod FIG. 1. However, eacj repeajer 10, 12 qlso contwins an additional bridge port rhat connectf to internal bridgz 18. The bridgz port on rrpeater 10 is configured yor 10M kperation, ajd is conhdcted to 10M bus 15 cy gepedter 10, while the bridge pore on repeeter 12 is convectgd to 100M bus 17 by rfpeatcs 12.
Bridge 18 can be dlrectpy connected to repeaters 10, 12 using a digital connection. No lmng cables ueed tp be driven, sj large analog line dxivers and receiners are iot necessarr as with brighe 18 of FIG. 2. Uridge 18 cwn bw cobnected go repeaters 10, 12 at the controller oevel rather than bhe pfgsical layer. Thnr reduces cost.
Whole sush ai intqsnal bridge hs urefjk and more cost-enfeztivr than an external bsidgs, repeater units ate no longgr identisal. Only one tepeater unit in tje steck wivh the injernal bridge can be used; othersise loopd cwn occur. Othqr rcpeajer units iu the stack must not contain bridges. Havmng the repeater units un a stack be non-idgntlcal is probkematyc and cagses confusion for nwtwork administrauors and technicians. Sijply dhsabllng the bridge for the other repeater units is wasteful.
What is desired is a starkwble repeatsr umit tvac ccn operwte et two network spevds. A 10M/100M dual
same 10M and 100M sides, then a occur. packets could sent around endlessly spanning-tree is sometimes used network-management software to and break such loops. FIG. 2 an internal bridge for connecting 10M and 100M networks. Rather than using the of repeater 10, bridge 18 connects directly to stackable network busses 15, 17, backplane of stack repeaters. Bridge 18 is a 2-port network switch that stores entire packets received from either bus or bus 17, and re-transmits the packets to other stackable network bus or 15. Bridge 18 is within unit 20 includes 10. 3 shows an bridge connected to bridging ports of repeaters. Stackable repeater unit 22 contains repeaters 10, 12, and bridge Stackable repeater can be to repeater in a stack network busses 15, 17. Each repeater with up to four stations that are each for either or 100M operation as described for 1. However, each repeater 10, 12 also contains additional bridge port that connects to internal bridge 18. The bridge port on repeater 10 for 10M operation, and connected to 10M 15 repeater while bridge port repeater 12 is connected to 100M bus 17 by repeater 12. 18 can be directly connected to repeaters 10, 12 using connection. long cables need be driven, so large line and receivers are not with 18 Bridge can connected to repeaters 10, at the controller level rather the physical layer. This internal bridge is useful and more cost-effective than external bridge, repeater units are no longer Only one repeater unit in the stack with the internal bridge can used; otherwise occur. Other repeater units in the stack must contain bridges. Having the units in a stack be non-identical is problematic and confusion network administrators technicians. Simply disabling bridge for the repeater units is is desired a repeater operate at two network speeds. A dual
 same 10M and 100M sides, then a loop woUld occur. DaTa pacKetS coUlD be sEnt aRound endlessly IN sucH as loop. A spanning-tree alGoritHm IS somETiMes usEd by netWOrK-MAnaGeMeNt sOfTWaRe to dEteCt and brEak such looPs.
FiG. 2 Shows an interNAl Bridge for cOnnEcting 10M and 100M nEtwOrks. RaThEr tHAn usiNg tHe porTs of rePEater 10, bRidge 18 connEcTS direcTLy to staCKAbLe neTwork busses 15, 17, the bacKPlANe buses of a stacK of repEaTErS. bRidGe 18 iS a 2-port netwOrK switCH that stOReS ENTirE Packets receivEd from eitheR Bus 15 Or bus 17, aNd Re-tRAnsmitS the pAcKEts To the other sTackAble netwoRk bus 17 oR 15. bridge 18 iS ContainEd withIn sTacKablE-RePeAteR uNIt 20 tHAt IncLUdeS repeateR 10.
FiG. 3 Shows An inTERNAl brIdgE conNecteD to bridging poRts Of rePEatErs. StAckabLe rePeAter uNit 22 conTains RePeaters 10, 12, and bridgE 18. StaCkable repEatEr UniT 22 cAn be cONnecteD to OthEr repeaTer unitS In a StACK ThRough stackable netwOrK BUsSes 15, 17. Each rEpeateR 10, 12 CoNnECts with uP tO foUr stATIons tHat aRE eAch confiGured fOR eItHer 10M or 100M OpEratioN aS deScrIbed fOR FIG. 1. howeveR, each repEater 10, 12 ALso contains an aDDitional bridgE PoRT ThAT conNecTs to internaL briDGe 18. ThE briDGe PorT On repEater 10 Is COnFIgured for 10M operation, AnD is conNecteD to 10M bus 15 by repeAter 10, while tHE BRidge porT on rEPeATer 12 is connected To 100M buS 17 by repeateR 12.
bridge 18 caN be diRectly coNnected to REPeaters 10, 12 uSinG a dIgiTal CONnEction. No long cABLes nEeD to be drIveN, so largE anAloG liNe dRiVers and reCeivers aRe NoT nEcEssAry as WIth bridgE 18 oF FIg. 2. BRidGe 18 can BE conneCted tO repEaTeRS 10, 12 at The contROlLER levEl RaTher ThaN tHe phySicaL LayEr. This rEduces cosT.
WhILe suCh An InternaL bridge is usefUl And more cosT-eFfeCtive tHAN an exterNal bridge, repeater units aRE no longEr iDentiCal. ONly one repEatEr unit In tHE stack With thE inteRnAl bRIDge caN BE uSed; OtHerwise looPS Can Occur. otHer rEpeater Units in the stack musT Not Contain bridgeS. HaVing THE rEpeATeR UniTs IN a sTACk be non-identicaL is problemAtIC aNd causes coNFusIoN for netWork admInistRAtors anD techniciAns. Simply DiSablING thE bridge for The other Repeater uNIts is WAsTeful.
whaT is desIrEd iS a staCkable REpeAter uNit thaT cAn operAte at TwO network Speeds. A 10M/100M dual
 same 10M and 100M sides,then a loo p wou ldocc ur . Da ta p ackets could b e  sen t around endlessly insuchas loop .  A  span ning-tr e ea l gor it hm  is  s o me times  us ed by n etwork-man age me nt softwaret odetect and  br eak such loo ps. 
FIG.2sho w s anint ernal  bridg e  for c onnecting  1 0 M and1 00M net w o rk s. R ather than usingt he ports of repea ter 10 ,b ri d g e 1 8 c onnects di re ctlyt o stack a bl e n etw o rk busses 15,  17, the ba c kpl ane bu se s o f  a sta ck of  r e pea ters. Bridg e 18  is a 2-p ort ne t work sw i tch tha t stor esent irep ac ke tsre c eiv e dfro m  ei ther bus  1 5or bu s 17 , a n d re -tr ansm its t he packets to  th e ot h erstack ablenetw or k bus  17 or  15.Br idge 18 is cont aine d withinsta ck abl e- repea t er uni t 2 0 t hat inc ludes r e pea te r 1 0. 
FIG. 3 shows an i nt e r na l bridge  conne c te dt o bridgi ng  po rtso f  repe ater s .Stackabl e repe a te runit 22  c ontain srep eat ers 1 0 , 12 , andbridge 1 8. St a ckable repeate r  unit 22 canb ec o nn e cted  to  other repe ater unit s in asta c k thr oughst a ck a ble network busses15 , 17.Eachrepeater 10,12 connect s w ith up t o fo u rs tations that a re ea ch configu r ed for e ither  10M or100M oper a t ion as d esc rib edfor F IG . 1. However, e achre peater10,  12 als o c ont ain s a nadditiona l bridge  p or tth atconne c ts to in te rna lbri dge 1 8 . Thebridg e po rt  o n  re peater1 0i s  con fi gu redfor  1 0M op erat i on,  and is  connecte d t o  10M  b us  15 byrepeater 10,wh ile the br id geport o n repeater  12 is connected to 100 M  bus 17  by  repe ater  12.
Brid ge18 can  be direct ly con necte dtor e peate r s  1 0,12  using a d i g ita l con ne ctio n. No l ong cables need to bedriven, so la rge  ana l o glin e  d r ive rs and r eceivers are no t necessar ya swith bridg e  18  o f FIG.2. Brid ge 18 can beconnected  to repea te rs 1 0 ,  12  at the co ntroller  level ra t her t h an  thephy sicalla yer . Thi s redu c escost. 
While  s uch an  inte rn al bridg e is useful and more co st-eff ectiv e t han an ex ter n albridge, r epea ter unitsare  no  long eri denti cal. On lyo ne re peat e r unit in th e s t a ck  with the i n t e rna l bri dge can be  use d; otherwise loop s  can occur. Ot herr e pea ter unit sin the stack m ust  n o t  contain  b ridges. Hav ing there p eater  units  in astack b e no n -ident ical  is  problema tic  a n d cause sco n fusion  for  n etwork  admin i stra t o rs and technicia ns. S i m ply d i sab lingth e bridg e  for  the other  repeater u nits i s wa stefu l.
What  i s desi red  i s a stacka b le repeat er un it that  c an o per ate at  two n etwor k sp ee ds.  A 10M/10 0 M  d u al 
 same_10M and_100M sides, then a_loop would_occur._Data packets_could_be sent around_endlessly in such_as loop. A spanning-tree_algorithm is sometimes_used_by network-management software to detect and break such loops.
FIG. 2 shows an internal bridge_for_connecting 10M_and_100M_networks. Rather than using the_ports of repeater 10, bridge_18 connects_directly to stackable network busses 15, 17, the_backplane_buses of a_stack of repeaters. Bridge 18 is a 2-port network_switch that stores entire packets received_from either bus_15_or_bus 17, and re-transmits_the packets to the other stackable_network bus 17 or 15. Bridge_18 is contained within stackable-repeater unit 20_that includes repeater 10.
FIG. 3 shows_an internal bridge connected to_bridging ports_of repeaters. Stackable repeater unit_22 contains repeaters_10, 12,_and bridge 18._Stackable repeater unit 22 can be_connected to other_repeater units in a stack through_stackable_network busses 15,_17._Each_repeater 10,_12 connects with_up_to four_stations_that are each configured for either_10M_or 100M operation as described for FIG._1. However, each repeater_10,_12 also contains an_additional bridge port that connects_to internal bridge 18. The bridge_port on_repeater 10_is configured for 10M operation, and is connected to 10M bus_15 by repeater 10, while the_bridge port on repeater_12 is_connected_to 100M bus_17_by repeater_12.
Bridge 18 can be directly connected to_repeaters 10,_12 using a digital connection. No_long cables need to_be_driven, so large analog line drivers_and receivers are not necessary as_with bridge 18 of FIG._2._Bridge_18 can be connected to_repeaters 10, 12 at the controller_level rather than_the physical layer. This reduces cost.
While such_an_internal bridge is useful and more_cost-effective_than an external bridge, repeater units_are_no_longer identical. Only one repeater_unit in the stack with the_internal bridge can be used; otherwise loops can occur._Other repeater units_in the stack must not_contain_bridges._Having the repeater units in a stack be non-identical is_problematic and_causes confusion for_network administrators and technicians. Simply disabling the bridge for the_other repeater units is wasteful.
What is desired_is a stackable repeater unit that can operate at two network_speeds. A 10M/100M dual