Foundry Networks OSI manuale d’uso

Foundr y Edg eIr on 4802CF Installation Guide 2100 G old Street P .O . Bo x 649100 San Jos e, C A 95164-910 0 T el 408.5 86.170 0 F ax 4 08.586.190 0 www .f oundrynetwo rks.co m F ebr uar y 2 003[...]

Copyright © 200 3 Foundr y Networ ks, Inc. All r ight s reser ved. No par t of this work m a y be r eproduced i n any form or by any means – graph ic, electroni c or mec hanical , including photocopying, r ecording, t aping or storage in an infor matio n retrieval system – w ithout prio r writte n per mi ssion of the copyright own er. The trad[...]

February 2003 © 2003 Foundry Networks, Inc. 3 C OMPLIANCES FCC - C lass A This equipment gener ates , uses , and can radiate rad io frequency en erg y and, if not installed and used in accordance with t he instruction manual , may caus e interferenc e to radio communications . It has be en tested and foun d to comply w ith the limits for a Class A[...]

E DGE I RO N 4802C F I NSTALLA TION G UIDE 4 © 2003 Foundry Networks, Inc. February 2003 Wa r n i n g : Do not plug a phone jack connector in the RJ-45 por t. This m ay damage this device. Les raccordeurs ne sont pas utilisé pour l e systéme téléphonique ! Industr y Canada - Class A This digital appar atus does not e xceed t he Class A l imits[...]

C OMPLIANCES February 2003 © 2003 Foundry Networks, Inc. 5 T aiw an BSMI Class A Australia AS /NZS 3548 (1995) - Clas s A Contact F oundr y Networks at: Fo un d r y N e t wo r k s, In c . 2100 G old Street P .O . B ox 649 100 San J ose, CA 95164-9100 ACN 066 352010[...]

E DGE I RO N 4802C F I NSTALLA TION G UIDE 6 © 2003 Foundry Networks, Inc. February 2003 Safety Compliance W a rn i ng : F ib e r O pt i c P o rt S a f e ty Av er tissment: P or ts pour fibres optiques - sécurité sur le plan optique W ar nhinweis: F aseroptikanschlüsse - Optische Sicherheit Underwriters Laboratories Compliance Statement Impor t[...]

C OMPLIANCES February 2003 © 2003 Foundry Networks, Inc. 7 Wichtige Sicherheitshinweise ( Ger m any) 1. Bitte lesen Sie dies e Hinweise sorgfäl tig durch. 2. Heben Sie diese Anleitung für den späteren Ge brauch auf. 3. V or jedem Reinigen i st das Ger ät v om Stromnetz z u trennen. V erwenden Sie k eine Flüssigoder Aerosol reiniger . Am beste[...]

E DGE I RO N 4802C F I NSTALLA TION G UIDE 8 © 2003 Foundry Networks, Inc. February 2003[...]

February 2003 © 2003 Foundry Networ ks, Inc. 9 C ONTENTS 1 About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Audien ce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Nomenc lature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

C ONTENTS 10 © 2003 Foundry Networks, Inc. February 2003 1000 Mbps Gigabit Ethernet Collision Domain . . . . . . . . . . . . . 3-6 100 Mbps Fast Ethernet Collis ion Domai n . . . . . . . . . . . . . . . . 3-7 Maximum Fast Etherne t Cable Distanc e . . . . . . . . . . . . . . . 3-7 10 Mbps Ethern et Collision Domain . . . . . . . . . . . . . . . . [...]

C ONTENTS February 2003 © 2003 Foundry Networ ks, Inc. 11 Adjusting Exist ing Category 5 Cabling to Run 1000BASE-T . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5 Console P ort Pin Ass ignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6 DB-9 Port Pin Ass ignment s . . . . . . . . . . . . . . . . . . . . . . . . .[...]

C ONTENTS 12 © 2003 Foundry Networks, Inc. February 2003[...]

February 2003 © 2003 Foundry Networ ks, Inc. 1-1 C HAPTER 1 A BOUT T HIS G UIDE Audien ce This guid e is for system administrato rs with a wo rking knowl edge of network manag emen t. Y ou should be familiar with swit ching and netw orking con cepts. Nomenc lature This guid e uses the following ty pog raphical conventions to show infor mation : It[...]

E DGE I RO N 4802C F I NSTALLA TION G UIDE 1-2 © 2003 Foundry Networks, Inc. February 2003 Web Access P o int your browser to the following URL: http: //www .fo undr y networks .com . Navigate to Ser vices /T echnica l Suppo rt . Clic k the L ogin butto n, then enter y our user name and passw ord to gain access to the F oundry support sit e. E-mai[...]

February 2003 © 2003 Fo undry Networks, I nc. 2-1 C HAPTER 2 A BOUT THE E DGE I RON 4802CF Overview F oundr y’ s Edge Iron 48 02CF is an intellig ent Fast Ether net switch with 48 10BASE -T/100BASE-TX ports and two 10/100/1000B ASE-T combo ports that operate in combin ation wit h 2 Small F or m F actor Plugg able (SFP) tra nsceiver slots . T his[...]

A BOUT THE E DGE I RO N 4802C F 2-2 © 2003 Foundry Networks, Inc. February 20 03 Switch Architecture The EdgeIro n 4802CF employs a wire -speed , non-block ing switchin g fabric . T his pe r mits simult aneous wire-speed transpor t of multiple p ackets at low latency on all port s . This switch also features full-duple x capability on al l ports ,[...]

D ESCRIPTION OF H ARDW ARE February 2003 © 2003 Fo undry Networks, I nc. 2-3 Description of Hardwa re 10BASE-T/100B ASE-TX Ports These are du al-speed RJ-45 p orts . Because al l ports on this s witch s upport automat ic MD I/MDI-X opera tion, you c an us e stra ight-thro ugh cabl es f or all network co nnect ions to PCs or se r vers, or to other [...]

A BOUT THE E DGE I RO N 4802C F 2-4 © 2003 Foundry Networks, Inc. February 20 03 Status LEDs The LEDs , which ar e locate d on the fr ont pan el for easy viewing, are shown below and descri bed in th e following ta ble. Figure 2-2. Port and System LEDs Port Status LEDs LED Condition Status Fast Ethernet Ports (Ports 1~48) Lin k/Act .* On/F lash in[...]

D ESCRIPTION OF H ARDW ARE February 2003 © 2003 Fo undry Networks, I nc. 2-5 FDX* (all ports) On Green Port is operating in full-d uplex mode. Off Port is operating in hal f-duplex mode. *Use the Mode Select but ton to sele ct the LED d isplay mode. System Status LED s LED Condition Status Power On Green The unit’s internal po wer supply is oper[...]

A BOUT THE E DGE I RO N 4802C F 2-6 © 2003 Foundry Networks, Inc. February 20 03 Optional Redundant Power Unit F o undr y provides an o ptional Redundan t P ower Unit (RPU) th at can supply power to the s witch in th e event of fa ilure of th e inter na l power supply . Power Supply Receptacles There are t wo p ow er receptacles o n the re ar pane[...]

F EATURES AND B ENEFITS February 2003 © 2003 Fo undry Networks, I nc. 2-7 Featur es an d Benefit s Connectivity ◆ 48 dual -speed ports fo r easy Fast E thernet in tegra tion and fo r prote ction of your inv estm ent in legac y LAN eq uipmen t ◆ Two 10/100/1000B A S E -T aut o - s e n s i n g Giga b it E t h e r n et s w i t c h i n g p o rts t[...]

A BOUT THE E DGE I RO N 4802C F 2-8 © 2003 Foundry Networks, Inc. February 20 03 ◆ Incl udes su pport for an op tional Redund ant Po wer Unit ◆ Desktop o r rack-mou ntable Management ◆ “At-a-gl ance” LEDs fo r easy tr oublesho oting ◆ Network managemen t agent: • Suppor ts Telnet , SNMP/R MON and W eb-base d interfa ce • Supports o[...]

February 2003 © 2003 Fo undry Networks, I nc. 3-1 C HAPTER 3 N ETWORK P LANNING Introd uction to Swit ching A network switch allows s imultaneous transmissio n of multiple packe ts via non-cros sbar switching . Th is means that it can p artition a network more effici ently th an bridges or routers . The switc h has , the refore, been recogniz ed a[...]

N ETWORK P LANNING 3-2 © 2003 Foundry Networks, Inc. February 20 03 Application Ex amples The EdgeIro n 4802CF is not only designe d to segm ent your network, but also to pro vide a wi de range of optio ns in set ting up netw ork connec tions . Some typical app lications are describe d below . Collapsed Backbone The EdgeIro n 4802CF is an excellen[...]

A PPL ICAT ION E XAM PLES February 2003 © 2003 Fo undry Networks, I nc. 3-3 Central Wiring Clos et With 50 parallel bridgin g ports (i.e., 50 distinct collision dom ains), the Edg eIron 4802CF can collapse a comple x network down into a single effici ent brid ged node , incre asing o vera ll ban dwidth a nd thro ughput. In the figure below , the 1[...]

N ETWORK P LANNING 3-4 © 2003 Foundry Networks, Inc. February 20 03 Remote Connections with Fiber Cable Fiber op tic t echnolog y allows for long er c abling than a ny othe r media type. A 1000B ASE-LX SFP transceiv er link can connect to a site up to 5 km awa y . This allows the EdgeIron 4802CF to se r ve as a collaps ed bac kbone , pro viding d [...]

A PPL ICAT ION E XAM PLES February 2003 © 2003 Fo undry Networks, I nc. 3-5 Making VLAN Co nnections VLANs ca n be ba sed on p or t g roups, or each d ata fram e can be explic itly tag g ed to identify the VLAN g roup it belongs to . When usin g por t-based VLANs , ports can ei ther be ass igned t o one sp ecific group or to all groups . P ort -ba[...]

N ETWORK P LANNING 3-6 © 2003 Foundry Networks, Inc. February 20 03 Connect ivity Rule s When addi ng hubs (r epeaters) to your ne tw ork, pl ease follo w the standa rd connec tivit y r ules fo r Ethernet, F ast Ethernet, and Gigabit Eth er net. Ho wev er, n ote that because swit ches br eak up the path for co nnected devices into s eparate collis[...]

C ONNECTIVITY R ULES February 2003 © 2003 Fo undry Networks, I nc. 3-7 100 Mbps Fast Ethernet Collision Domain Maximum Fast Ethernet Cable Distance 10 Mbps Ethernet Collision Domain Maximum Ethernet Cable Distance Type Cabl e Type Ma x. Ca ble Len gth 100BASE-TX Category 5 100-ohm UTP or STP 100 m (328 ft.) 100BASE-FX Multimode 50/125 or 62.5/125 [...]

N ETWORK P LANNING 3-8 © 2003 Foundry Networks, Inc. February 20 03 Applicati on Not es 1. Full-duplex operation on ly applies to point -to-point access (such as when a switc h is attac hed to a w o rkstation, s er ver or a nother switch). When the switc h is con nected to a hub , both devices m ust opera te in half-duplex mode. 2. Avoid using f l[...]

February 2003 © 2003 Fo undry Networks, I nc. 4-1 C HAPTER 4 I NSTALLING THE S WITCH Selecting a Site Edg eIron 4802CF units can b e mounted in a standard 19-inc h equipment rack or on a flat surface. Be sure to follo w the guid elines below when cho osing a lo cation. ◆ The site should: • be at t he center of all the de vices you want to link[...]

I NS TAL LI NG THE S WITCH 4-2 © 2003 Foundry Networks, Inc. February 20 03 Equipm ent Checkl ist After unpackin g the Edg eIron 4802 CF , ch eck the co ntents to be sure y o u have received all the co mponen ts . T hen, be fore be ginning th e installat ion, be sure you ha ve all ot her nece ssary installat ion equi pment. Package Contents ◆ Ed[...]

M OUNTING February 2003 © 2003 Fo undry Networks, I nc. 4-3 Mountin g An EdgeIron 4802CF unit can b e mounted in a stand ard 19-inch equipmen t rac k or on a d esktop o r shelf . Mount ing inst r uctions for eac h type of si te follow . Rack Mounting Bef ore r ack m ount ing the sw itch, pay p articular att ention to the fol lowing factors: ◆ Te[...]

I NS TAL LI NG THE S WITCH 4-4 © 2003 Foundry Networks, Inc. February 20 03 T o rack-mount devic es: 1. Attac h the brack ets t o the devi ce using t he screws provi ded in th e Bracket Mounting K it. Figure 4-1. Attaching the Brackets 2. Mount the device in the r ack, using four rack-mou nting screws (not provided ). Figure 4-2. Install ing the S[...]

M OUNTING February 2003 © 2003 Fo undry Networks, I nc. 4-5 3. If installing a single switch only , turn to “Connect ing to a P ower Sour ce” a t the end o f this chapter. 4. If installing multiple swit ches , mount them in the rack, one below the other, in any or der. 5. If also installing RPUs , mount them in the rack below th e other device[...]

I NS TAL LI NG THE S WITCH 4-6 © 2003 Foundry Networks, Inc. February 20 03 Connect ing to a Power Source T o co nnect a devi ce to a po wer source: 1. Insert th e pow er cable pl ug direc tly into th e receptacle lo cated at the back of th e de vice. Figure 4-4. Power Receptacle 2. Plug t he other e nd of the ca ble int o a grounded, 3-pin sock e[...]

February 2003 © 2003 Fo undry Networks, I nc. 5-1 C HAPTER 5 M AKING N ETWORK C ONNECTI ONS Connect ing Netwo rk Device s The EdgeIro n 4802CF is designed to in terconnect multiple segm ents (or collision domains ). It may be connected t o network cards in PCs and ser vers, or to hubs, switches or rou ters. Note: Before conne cting cab les, you ma[...]

M AKIN G N ETWORK C ONNECTIONS 5-2 © 2003 Foundry Networks, Inc. February 20 03 Note: If au to-negot iation is disa bled for a n RJ-45 port, the a uto-MDI / MDI-X pin signal co nfigu ration is als o disab led. See Appendix B for fur ther infor mati on on cabling . Caution : Do not plug a phone ja ck connec tor into an RJ -45 por t. T his will dama[...]

T WISTED -P AIR D EVIC ES February 2003 © 2003 Fo undry Networks, I nc. 5-3 Notes: 1. When connected to a shared collision domain (such as a hub with multiple wo rkstations), s witch ports must be set to half-duplex mode. 2. Avoid using flow cont rol on a port conn ected to a hub unles s it is actually required to solve a problem. Oth erwise back [...]

M AKIN G N ETWORK C ONNECTIONS 5-4 © 2003 Foundry Networks, Inc. February 20 03 Figure 5-2. Wiri ng Closet Connections Equipment Rack (side view) Switch Patch Panel Punch-Down Block Wal l[...]

February 2003 © 2003 Fo undry Networks, I nc. A-1 A PPENDIX A T ROUBLESHOOTING Diagnosi ng Switch Indicato rs Power and Cooling Problems If the power indi cator doe s not tur n on when the power cord is pl ug g ed in, you m ay ha ve a prob lem with the po wer outlet, pow er cord, or internal power supply . Howev e r , if the unit p ow ers off afte[...]

T R OUBLESHOOTING A-2 © 2003 Foun dry Networks, I nc. February 2003 check for lo ose p ow er conne ction s, po wer lo sses or surg es a t the power outlet, and v erify t hat the fans on the uni t are unob structed and running prior to shutdown. If you still cannot isolate the problem, then the inter nal pow er supply may be defect iv e. In this c [...]

February 2003 © 2003 Fo undry Networks, I nc. B-1 A PPENDIX B C ABLES Specif icatio ns Cable Typ es and Specific ations Cabl e Type Max. L ength Conn ecto r 10BASE-T Cat. 3, 4, 5 100-ohm UTP 100 m (328 ft) R J-45 100BASE-TX Cat. 5 100-ohm UTP 100 m (328 ft) RJ-45 100 0 BASE- S X 50/ 1 25 or 6 2.5 / 125 micron core m u ltimode f i ber (MMF) See tab[...]

C ABL ES B-2 © 2003 Fo undry Networks, Inc. February 2003 Twiste d-Pair Ca ble and Pin Assi gnments Caution: DO NOT pl ug a phon e jack con nector into any R J-45 port . Use only twisted-pai r cables with RJ-45 con nectors tha t conf orm with FCC stan dards. F o r 100B ASE-TX/10BASE-T connections , a twist ed-pair cable must hav e two pairs of wir[...]

T WISTED -P AIR C ABL E AND P IN A SSIGNMENTS February 2003 © 2003 Fo undry Networks, I nc. B-3 100BASE-TX/10BASE-T Pin A ssignments With 100B ASE-TX/10BASE-T ca ble, pins 1 and 2 are used for transmi tting data, and pins 3 and 6 for receiv ing data. Because all por ts on this switch sup por t auto matic MDI/M DI-X opera tion, you can use st raigh[...]

C ABL ES B-4 © 2003 Fo undry Networks, Inc. February 2003 1000BASE-T Pin Assignments 1000BASE-T ports switch suppor t automatic MDI/MDI-X operation, so you can us e strai ght-thr ough c ables fo r all network con nectio ns to P Cs or servers , or t o other s witch es or hub s . The table below shows the 1000B ASE-T MDI and MDI-X port p inouts . Th[...]

T WISTED -P AIR C ABL E AND P IN A SSIGNMENTS February 2003 © 2003 Fo undry Networks, I nc. B-5 1000BASE-T Cable Requirements All Catego ry 5 UTP cables that are used for 100B A SE-TX connections should also wo rk for 1000B ASE-T , providing that all four wire pairs are connected. Howev er, it is recommend ed that for all c ritical connec tions, o[...]

C ABL ES B-6 © 2003 Fo undry Networks, Inc. February 2003 Console Port Pin Assignments The DB-9 serial port on the switc h’ s rear p anel is us ed to conn ect to the switch for out-of -band conso le conf igura tion. The on -board menu-driven config uration p rog ram c an be acce ssed fr om a ter minal, a P C r unning a ter minal emulat ion progr[...]

C ONSOLE P ORT P IN A SSIGNMENTS February 2003 © 2003 Fo undry Networks, I nc. B-7 Console Port to 25-Pin DTE Port on PC Switc h’s 9-Pin Serial Port Null Modem PC ’s 25-P in DT E Port 2 RXD <---- -----R XD ----- ------- 2 TXD 3 TXD ---- ------- TXD ---- ----- -> 3 R XD 5 SGND ---- ------- SGND -- ----- --- 7 SGND No other pins are u sed.[...]

C ABL ES B-8 © 2003 Fo undry Networks, Inc. February 2003[...]

February 2003 © 2003 Fo undry Networks, I nc. C-1 A PPENDIX C S PECIFI CATION S Physical Chara cteristics Po r t s 48 10B ASE-T/100BASE-TX, with auto-negotiation T w o 10/100/1000BASE-T shared with two SFP transceiv er slots Network Interface 10B ASE-T: RJ-45 (100-ohm, UTP cable; Categ ories 3, 4, 5) 100B ASE-TX: RJ-45 (100-ohm , UTP cable; Catego[...]

S PECI FICA TION S C-2 © 2003 Foundry Networks, Inc. February 2003 Te m p e r a t u r e Operating: 0 to 50 ° C (32 to 122 ° F) Storage: -4 0 to 70 ° C (-40 to 158 ° F) Humidity Operating: 10% to 90% AC Input 100 to 24 0 V , 50 to 60 Hz P ower Supply Internal, aut o-ranging transfor mer : 90 to 260 V AC , 47 to 63 Hz Redundant DC inpu t P ower [...]

S WITCH F EAT UR ES February 2003 © 2003 Fo undry Networks, I nc. C-3 Switch Features Spanning T r ee Protoco l F orwa rding Mode Store-and-fo rward Flow Con trol Full Duplex: IEEE 802.3x Half Duplex : Back press ure Broadcast Stor m Suppression T raffic throt tled abo ve a cri tical th reshold VLAN Support Up to 255 gr oups; port-based or wit h 8[...]

S PECI FICA TION S C-4 © 2003 Foundry Networks, Inc. February 2003 Manageme nt Fe atures In-Band Management T elne t, W e b-base d HTTP , or SNMP manager Out-of-Band Mana gement RS-232 DB-9 console port Software Loadi ng TFTP in-band or XModem o ut-of-band MIB Suppor t MIB II (RFC 1213), Bridge MI B (RFC 1493), Interfaces Evo lution MIB (RFC 2863)[...]

C OMPLIANCES February 2003 © 2003 Fo undry Networks, I nc. C-5 Compliances CE Mark Emissions FCC Class A Indus tr y C anada Class A EN55022 (CISPR 22) Class A EN 61000-3-2/3 V CCI Class A C-Tick - AS/NZS 3548 (1995) Class A Immunity EN 61000-4-2/3/4/5/6/8/11 Safety CSA/NRTL (CSA 22.2.950 & UL 1950) EN60950 (TÜV/GS)[...]

S PECI FICA TION S C-6 © 2003 Foundry Networks, Inc. February 2003[...]

February 2003 © 2003 Fo undry Networks, I nc. Glossary- 1 G LOSSA RY 10BASE-T IEEE 802.3 specification for 10 Mbps Ethernet ov er two pairs of Categor y 3, 4, or 5 UTP cable. 100BASE-TX IEEE 802.3u specification for 100 Mbps F ast Ethernet ove r two pairs of Categor y 5 UTP cable . 1000BASE-SX IEEE 802.3z specification for Gig abit Ether net ove r[...]

G LOSSAR Y Glossary-2 © 2003 Fo undry Networks, Inc. February 2003 Bandwidth The differ ence betw een the h ighes t and lo wes t frequenc ies av ailable f or network signals. Also sy nonymo us with wire spe ed, the actual s peed o f the data trans missi on alo ng the cable . Collis ion A condit ion in w hich p ack ets tr ansmitted ov er the cabl e[...]

G LOSSAR Y February 2003 © 2003 Fo undry Networks, I nc. Glossary- 3 Gigabit Ethernet A 1000 Mbps network comm unication system based on Ethern et and the CSMA/CD access method. Full Duplex T r ansmission me thod th at allows two network devices t o transm it and recei ve c oncurrently , effecti vely doublin g the ba ndwidth of that l ink. IEEE In[...]

G LOSSAR Y Glossary-4 © 2003 Fo undry Networks, Inc. February 2003 LAN Segment Separate LAN or co llision domain. LED Light emittin g diode u sed f or monito ring a de vice or network co ndition. Local Area Network A group of i nterco nnected com puters an d support de vices . Media Access Control (MAC) A portio n of the netw orking pr otocol t ha[...]

G LOSSAR Y February 2003 © 2003 Fo undry Networks, I nc. Glossary- 5 Transmission Control Protocol/Internet Protocol (TCP/IP ) Proto col suit e that in clud es TCP a s the pr imar y tra nspor t protoc ol, and I P as the netw ork layer protoc ol. UTP Unshielded twiste d-pair cable. Virtual LAN (VLAN) A Virtual L AN is a col lection o f netw ork nod[...]

G LOSSAR Y Glossary-6 © 2003 Fo undry Networks, Inc. February 2003[...]

February 2003 © 2003 Fo undry Networks, I nc. Index-1 Numerics 10 Mbps connect ivity rules 3-7 1000 Mbps connectivity rules 3-6 1000BASE-LX fiber cable le ngths 3-6 1000BASE-SX fiber cable le ngths 3-6 100BASE cable lengths 3-7 100BASE-FX fiber 3 -6 100BASE-TX ports 2-3 10BASE cable leng ths 3-7 10BASE-T ports 2-3 A adhesive feet, attaching 4-5 ai[...]

I NDE X Index-2 © 2003 Fo undry Networks, Inc. February 2003 I IEEE 802.3x flow control 2-3 IGMP 2-2 indicators, LED 2-4 installation connecting devi ces to the switch 5-2 desktop or she lf mounting 4- 5 port connections 5-1 power requirements 4-1 problems A-2 rack mounting 4-3 RPUs in racks 4-5 site requirements 4-1 wiring close t connecti ons 5-[...]

I NDEX February 2003 © 2003 Fo undry Networks, I nc. Index-3 RMON 2-2 routing applica tions 3-8 RPU connecting 4-6 installing in a rack 4-5 installing on a de sktop 4-5 optional redund ant power unit 2-6 RS-232 port 2-2 rubber foot pads, at taching 4- 5 S sample appl ications 3-2 screws for rack mounting 4-2 serial port 2-2 site selelctio n 4-1 SN[...]

I NDE X Index-4 © 2003 Fo undry Networks, Inc. February 2003[...]