Manuale d’uso / di manutenzione del prodotto MIL-SM808GPXX del fabbricante Transition Networks
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8 Port 1 00BAS E-FX Plus On e SFP Intelligen t Fiber Swit ch MIL-SM 808GPxx USER GUI DE.
ii Regulatory A pproval - FCC Class A - UL 1950 - CSA C22.2 No. 950 - EN60950 - CE - EN55022 Class A - EN55024 Canadian EMI Notice This Class A digital apparatu s meets all the requirements of the Canadian Interfe rence-Causing Equipment Regulations.
iii T o Cont act MiLAN T echnology For prompt response whe n calling for service information, have the following i nformation ready: - Product seri a l number a nd revision - Date of purcha se - V e ndor or place o f purchase Y ou can reach MiLAN T echnology technical support at: E-mail: support@mila n .
iv T able of Cont ent s 1. Introduction Features Intelligent Management Feature s Package Contents Management Methods Console and T elnet M anagement Web-based Ma nagement SNMP Networ k Management 2. Hardware Description Front Panel LED Indicators Rear Panel Desktop Installation 3.
v 4-3-4-2. Create a VLAN Gr oup 4-3-4-3. Edit / Delete a VLAN Group 4-3-5. Priority Configuration 4-3-6. MAC Address Configuration 4-3-6-1. S tatic MAC Address 4-3-6-2. Filtering MAC Address 4-3-7. Misc. Configuration 4-3-7-1. Port Security 4-3-7-2. MAC Age Interval 4-3-7-3.
vi 5-4-3. Console Port Information 5-4-4. Port Controls 5-4-5. T r unk ing 5-4-5-1. Agg regator Settin g 5-4-5-2. Agg regator Inform ation 5-4-5-3. S tate Activity 5-4-6. Filter Dat abase 5-4-6-1. IGMP Snooping 5-4-6-2. S tatic MAC Address 5-4-6-3. Port Security 5-4-6-4.
1 1. Introduction The MIL-S M808G manag ed compact desk top switch is an ideal solution for a Fiber net work in frastructure. It pro vides wire-sp eed, Fast Etherne t switching providing high- performance data t ransf er .
2 Featu res Conforms to IEEE802.3u, IEEE802.3z and IEEE802.3x Ethernet S tandards Eight 100Mbp s Fast Ethernet Fiber ports and one S FP port One Console p o rt on the front for switch soft.
3 Package Cont ent s Unpack the contents of the package and verify them against the checklist below . MIL-SM808G Switch Power Co rd Four Rubber Feet RS-232 cab le User Gui de ( CD Man ual) Warranty Card If any item is missing or dam aged, p lease contact your local dealer f or service.
4 Web-based Manag ement The switch pro vides an emb edded HT ML web server residing in f lash memory . It offers advanced manag ement features and allo ws users to manage the s witch from anywhere o n the net work through a standar d browser such as Microsoft Intern et Explorer o r Netscape.
5 SNMP Netwo rk Managemen t SNMP (Simple Net work Managemen t Prot ocol) provides a me ans to monitor and c ontrol n etwork devices , and to manag e conf igurations, statistic collection, performance , and secu rity .
6 2. Hardw are Description Front Panel The Front Panel of th e MIL-SM808G switch series con sists of eight 100Mbps Fast Ether net Fiber por ts, one SFP port, one conso le port, o ne LED-Indicator for Power , one LED-Ind icator (L NK/ACT) for the SFP port and two L ED-Indicators (LN K/ACT , FDX/COL) f or each Fiber port.
7 LED Indicators Figure 2-2. L ED Indicators There are t wo LED-Indicators (LNK/A CT , FDX/CO L) for each Fiber port, one LED-Indicator (L NK/ACT) for the SFP port and one LED-In dicator for power . The f ollowing table provides descriptions of the LE D statuses and meaning.
8 Rear Panel The 3-pronge d power plug and the po wer on/off s witch are located at th e Rear Pane l of the MIL- SM808G swit ch, as shown in Figure 2-3. The switches will work wi t h AC in the ra nge 10 0-240V A C, 50-60Hz . Power Plug Power On/Of f Switch Figure 2-3.
9 Figure 2-4. Att ach ing Rubber Feet t o each c orner on the bottom of the Switch Power On Connect the power cord to the po wer sock et on the rear panel of the Switch. Connect th e other end of the cord to an appropr iate power outlet. The interna l po wer suppl y in the switch works with AC in the voltage range 100-240V AC, f requency 50~ 60Hz.
10 3. Netw ork Appl ication Segment Application For enterprise network s where large da t a br oadcasts are constant ly processed, th is switch is sui table for department user s to conn ect to the corporate back bone.
1 1 4. Netw ork Configuration Conn ecting a T ermi nal or PC to the Con sole Port Console manag ement in volves the adm inistration o f the switch via a direct connect ion to the RS-232 conso le port. This port is a female DB-9 connector . From the main menu of the conso le progr am, the user has access to mana ge the f unctions of the switch.
12 After the connect ion between Switch and PC is finished, turn on the PC and run a ter minal emulat ion program or Hyper T ermi nal to match th e following def ault char acteristics of the console port : Baud Rate: 9600 bp s Dat a Bit s: 8 Parity: none Stop Bit s: 1 Flow Control: None Figure 4-2.
13 logon screen and a n ew login is nec essary in orde r to continue . 4. The s witch is shipped with a def ault IP ad dress of 192 .168.1.77. The def ault subnet mask is 255.
14 4-1 M ain Menu There are f ive items f or selection as follows: S tatus and Coun ters: Sho ws the status of t he switch. Sw itch S tat ic Configuration : Menus to configu re the switch. Protocol Related Configu ration: Con figures pro tocol feature s.
15 4-2. St atus and Count ers Press the T ab or Backspace key to choo se action men u, and then press the Enter ke y to select the item..
16 4-2-1. Port St a tus T ype: Disp lays the port type o f either 100 Mbps or 1000Mbps. Enabled: A port tha t is enab led will be displa yed as “Y e s”. A po rt that is disabled will be displayed as “No”. S tatus: Displays the port's link.
17 4-2-2. Port Count ers The f oll o wing inf ormation provides a view of the current da t a pack et informatio n of the uni t. T he screen is not automatica lly updated.
18 4-2-3. System Inf ormation System Desc ription: Disp lays the name of the device. M AC A ddr ess: The unique hard ware add ress assigned by manuf acturer . Firmw are V ersion: Displays the s witch’s firmware versio n. Hardw are V ersion: D isplays the s witch’s Hardware versi on.
19 4-3. Switch St a tic Configu ration Press the T ab or Backsp ace k ey to choo se action men u, and then pr ess the Enter ke y to select item . 4-3-1.
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21 4-3-1-1. Device Inf ormation Device Name: 10 charact ers can be u sed to give the swit ch a unique name in order to d istinguish it on the networ k. After conf iguration this n ame will show at the top of each me nu screen. Device Co ntent: 32 charact ers can be u sed to d escribe devices attached.
22 4-3-1-2. I P Configuration This menu en ables the user to chang e the def ault settings of the IP address, subnet mask and gat eway . Rebooting the switch is necessar y to have the conf iguration change t ake affe ct. Actions-> <Edit>: C onfigures a ll items.
23 4-3-1-3. Change Username Use this s creen to ch ange the User Name. The def ault user name is root. 4-3-1-4. Change Password Use this s creen to ch ange the Pass word.
24 4-3-2. Port / T run k Configu ration This page can ch ange every p ort status and conf igure trunk g roups. Press T A B key to change the configurat ion of each item. 1. Enabled: User can disa ble or enable the port. Port 9 is always enabled. 2. Auto Ne g otiate: Por ts 1 t o 8 (100Mbps Fi ber) are d isabled, Port 9 (SFP port) is enab led.
25 Actions-> <Quit>: Exits the por t conf iguration page and retur ns to previo us menu. <Edit>: C onfigures a ll items. W hen finished, pressi ng ESC retu rns to the action men u line.
26 4-3-3. Port Mirroring Configura tion Port mirro ring is a method for monitor ing traffic in switch ed network s. T r af f ic through ports can be monitored by one specific port. The traffic being received or transm itted by the monitored por ts will be duplicated into the mon itoring port.
27 action men u line. <Save>: Saves all c onfigured va lues..
28 4-3-4. VL A N Con figuration All ports are automatically placed in VLAN 1, t he d efault VLAN. T o create new VLANs, use the Create a V LAN Group m enu and add a VLA N. Make s ure when you enter a VLAN name you do not leave spaces. For example VLA N2 is correct; VLAN 2 will give a n error .
29 4-3-4-1. VL A N Co nfigure Choose a VLAN In the VLAN Configur e menu select the type of VLAN you want to configure: No VLAN (default), Port Bas ed, 802.1Q, or 802.1Q with GVRP . Save the co nfig uration. There are 4 d ifferent options f or VLANs to choose f rom using the space bar: Disabled, Port Based , 802.
30 If more than one VL AN is necessar y , the additiona l VLANs ma y be created. PVID (Port VID): Set t he port VLAN ID t hat will b e a ssigned t o untagg ed traffic on a given po rt. This feature is u seful f or accommodat ing devices that you want to participate in t he VLAN, but don’t support tagging.
31 4-3-4-2. Create a V L A N Grou p T o create a VL AN and add tagg ed /untagged member por ts to it: 1. VL AN Name: T ype a name for the ne w VLAN using 15 a lphanumeric characters an d no spaces. 2. VL AN ID: T ype a VID (bet ween 2~409 4). The default is 1.
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33 4-3-4-3. Edit / Delet e a VL A N Gr oup Use this men u to edit or delete a VL AN group. W hen editing the cho sen VLAN, the user can cha nge the pro tocol VLAN or a member port. A n ew protocol can be co nfig ured and th e por ts c an be c hanged to tagged or un t agg ed or deleted a s member ports from this VLAN.
34 4-3-5. Priorit y C onfigurat ion 1. There a re eight (0 to 7) priority le vels that can be m apped as h igh or lo w priority qu eues. 2. High/Low Q ueue S ervice Ration ( High:Low ): User can sele ct the ratio of high prior ity packet s and low pr iority packet s.
35 High : 1 Lo w means t hat the switch se nds 2 h igh priority packets bef ore sending 1 low priority pa ck et..
36 4-3-6. M A C A dd ress Configur ation 4-3-6-1. St ati c MA C A ddr ess W hen a st atic MAC address is added , i t remains i n the switch' s address table, regardless of wh eth er the device is physically connected to the switch.
37 Add st ati c MAC add ress 1. Press the < Add> ke y . Then press the <Edi t> key on this menu to add a static MAC addre ss. 2. Enter the MAC addre ss to and f rom which the port should perman ently forward traff ic, regardless of the device’s network act ivity .
38 Edit st ati c MAC addre ss 1. Press <Ed it> key to m odify a static MAC address. 2. Choose the MAC address t hat you want to modif y and then pr ess enter . 3. Press the < Edit> ke y to modify a ll the items. 4. Press ESC to g o back action m enu line, a nd t hen select <Save> to save all conf igured values.
39 4-3-6- 2.Filtering MAC A dd ress Edit Filteri ng MAC ad dress 1. Press the < Edit> ke y to modify a static Filtering address. 2. Choose the MAC address t hat you want to modif y and then pr ess enter . 3. Press the < Edit> ke y to modify a ll the items.
40 4-3-7. Misc Configu ration.
41 4-3-7-1. Port S ecurity A port se t in security mode will be “locke d” and be without a ddress lear ning. Only the incoming packets with the so urce MAC addr ess alrea dy existing in the address table can be fo rwarded. W ith port secur ity , use rs can d isable a port from learn ing new MAC add resses.
42 4-3-7-2. M A C A g e Int erval T o configure a different MAC Age Interval, type the nu mb er of s econds t hat a n inactive MAC address rema ins in the s witch’s address table bef ore it is deleted.
43 4-3-7-3. Broadcast Storm Fil tering Broadcast storm filtering is used to limit the amount of b roa dcast t raffic on the network. An excess ive amoun t of broadca st traffic can inhibit data p ack ets from timel y delivery . The valid thres hold v alues are 5%, 10%, 15% , 20%, 25% an d NO.
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45 4-3-7-4. Max Bridg e T ransmit Dela y Bound Max bridge t ransmit dela y bound ( 0,1-4 sec): Lim it s th e packets queuing time in the switch. If enabled, the packets exceed ing the queu ing time will be dropped. Press the Spa ce k ey to set the time.
46 Actions-> <Edit>: C onfigures a ll items. W hen finished, pressi ng ESC retu rns to the action men u line. <Save>: Saves all c onfigured va lues.
47 4-4.P rotocol Relat ed Configur ation 4-4-1. STP 4-4-1- 1.STP Enable This page enable s or disables t he S p ann ing T ree func tion. Press the Sp ace key to se lect Enable d or Disabled.
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49 4-4-1-2. System Con figuration S panning tree infor mation for th e Root Bridg e on the left is f or display only . Config ure new values f or the STP parameter on th e right. Y ou must enable ST P fu nction bef ore selecting the configur ation menu.
50 from i ts S panning- T ree P rotoco l learning and li steni ng states to the fo rw ar ding state. Enter a num ber 4 through 3 0..
51 4-4-1-3. STP Port Configurat ion 1. PortSt ate: S panning tre e status for each port . 2. PathCost : S pecif ies the path cost of the port that the switch u ses to determine which ports are the forwarding ports. If you chang e the value, you need to r estart the switch f or valid value change to take effect.
52 4-4-2. SNMP Any Net work Managemen t station running the Simple Ne twork M anag ement Protocol ( SNMP) can ma nage the switch provided that the Manag ement Information Base (MIB) is installed. SN MP is a protoc ol that go verns the transfe r o f information between management an d agent.
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54 4-4-2-1. System Opt ions Press <Edit > to ent er all item s, and then press <Sa ve> to save th e co nfigu red values. 1. System Name : Ente r a name to identify t he switch. 2. System Con t act: Enter the name of the contact perso n or org anization.
55 4-4-2-2. Communit y Strings Communit y strings se rve as passwords a nd can be enter ed as one of the following : Read on ly : Enables requests accompanied by thi s string to display MIB-obj ect information. Read Write : Enab les requests accom p an ied by this string to d isplay MIB-obj ect information and to set MIB objects.
56 <Save>: Saves all c onfigured va lues. <Quit>: Exits this pag e and returns to pr evious me nu..
57 4-4-2-3. T rap Mana gers A trap m anager is a manage ment station that rec eives traps. The switch generates s ystem alerts. If no trap manag er is defined, no tr aps are issued. Create a t rap manage r by entering the IP address of the station and a communit y string.
58 4-4-3. GVRP Use the GVRP Config uration sc reen to enable or disab le GVRP (G ARP V LAN Registration Protocol) sup port. Press the S pace key to choo se Enab led or Disabled . Actions-> <Edit>: C onfigures a ll items. Press t he Sp ace ke y to choose E nabled or Disabled mode.
59 4-4-4. L A CP.
60 4-4-4-1. Aggregato r Setting 1. Group: Di splays the t runk group ID. NOTE: Bef ore setting LACP support, you must first set t he trunk g roup using the Port / T run k Configurat ion screen. 2. LACP: Pre ss the Sp ace ke y to enable or disable LA CP (L ink Agg regation Control Prot ocol) sup port.
61 4-4-4-2. St ate A c tivit y Active: The port au tomatica lly sends LAC P prot ocol packets. Passive: The port do es not aut omatically se nds LACP protoco l packets, and responds only if it receives LACP protocol packets f rom the opposite d evice.
62 4-4-4-3.L A CP S tatus W hen setting a trunki ng group, the r elationsh ip status informa tion may be seen on the LACP Group S tatus screen. Actions-> <Quit>: Exits this pag e and returns to pr evious me nu.
63 4-5.Rebo ot Switch Default: Res ets the switch to the factory defau lt configuration . The software version tha t the switc h will be reset t o can be f ound on the “S ystem Information” menu under the main menu “S tatus and Counters ”. Rest art: Reboots the switch t o enab le items that have been con figured.
64 4-6.Updating Firmware using the Console P ort 1. W hile booting the s witch, press the X key t o st art the Xmodem routine on the device. 2. Pressing X will cause th e switch Xmode m applicati on to begin a nd cause the baud rat e to cha nge to 57600 b ps.
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66 6. After successf ully upgrading to the new f irmware, chan ge the b aud rate back to the d efault 9600 bps..
67 5. W eb-Based Management This section introduces the c onfigurat ion and f unctions of the web-based management of MIL-S M808G switc h series. The managed s witch ser ies provides an e mbedded HTML website residing in f lash memory . This feature allows users to m anag e t he switch from anywhere on the network through a standard web browser .
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69 5-1. Web Man agement Ho me Overview 1. Home Page..
70 5-2. Port stat us S tate: Disp lays port status off or on depend ing on user sett ing. “Un link” means the por t is offline or “off ”. Link St atus: Down is “No Link ”, Up is “L ink” Auto Neg otiation: Ind icates if the port is in auto negotiation mode.
71 5-3. Port St ati stics 1. The f oll o wing inf ormation provides a view of the current status of the unit. A s ingle port counter scre en: 5-4. A d min istrator The manag ement f unctions includ e .
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73 5-4-1. I P A dd ress The IP Setting s can be change d by entering new values and clicking the app ly button. The s witch must be reset for the n ew IP address to take effect. Default IP:19 2.168.1. 77 Subnetmask :255.255 .255.0 Gateway:192. 168.1. 6 5-4-2.
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75 5-4-2-2. Advanced 1. Miscellane ous Settin gs: M AC A ddr ess A ge-o ut Time: T ype the number of seconds t hat an inacti ve MAC address rema ins in the s witch's address table. The valid range is 300 to 765 seconds. Defa ult is 300 second s. Max bridge t ransit dela y bound co ntrol: Limit s the packets q ueuing time in the switch.
76 2. Priorit y Queue Ser vice settings : First C o me Firs t Service: The seq uence of packets sent i s dependent on the order of arrival. The first packets in the qu eue are trans mitted bef ore any other packets. All High before Low : The high pr iority pack ets are sent bef ore the lo w priority packets.
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78 3. Protoco l Enable Set ting: Enable Sp anning T ree Prot ocol: Enable s STP . T he recomm ended def ault is to disable STP . Enable Inte rnet Group M ulticast Protoc ol: Enab les IGMP protocol. IGMP Query Mode: Recognizes d ifferent queries f rom clients or servers to decide which Query will be t he f irst priority .
79 4. IGMP Theor y of Operation The f oll o wing three top ologies detail ho w IGMP Q uery work s and to be conf igured within a ne twork: 1. Auto m od e needs to be ena bled when the ro uter ’ s IP a ddress is sma ller than other s witches in the subnet.
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81 3. The f ollowing topo logy m ust be set when the I P a ddress of the switch is n ot the smallest in the subnet. The network will cause a multi-cast stor m from the IGMP c lient re port if it is in Auto mo de. All switches must be in disable mode when the VOD serve r is configu red for IGMP Querier .
82 5-4-3. Console Port Informati on Console is a standard UART interface to comm unicate with a serial port . The W indows HyperT erminal prog ram can be us ed to link the switch wit h the console po rt. In order to chang e any of these param eters, you must be connected to the con sole port.
83 5-4-4. Port Control s The menu a llows changing of port configurat ions. S tate: User ca n disable or en able ports 1-8, port 9 is always en abled. Auto Neg otiation: Por t s 1-8 ar e f ixed to disabled mode, and por t 9 is enabled. Speed setting: Ports 1-8 are set at a f ixed speed of 100 Mbps.
84 on the network . LACP operation require s full-dupl ex mode. For more detailed informatio n refer to IEEE 80 2.3ad. If there are t wo trun k g roups A and B, a nd B grou p is e nab led L ACP , then i t w ill act as a redund ant link (Backup group f or T runk group A).
85 5-4-5- 1. A ggreg ato r Setting System Priority: A v alue used to identify the active LACP . The switch with t he lowest va lue has the highest priority and is select ed as the act ive LACP . T o create a trunk across two or more ports: 1. Group ID: Choose the " Group ID" and click " Get".
86 5-4-5-2. A ggreg ato r Information The LACP Aggregator relat ion inform ation is displa yed as shown . 5-4-5-3. S tate A cti vity Active (se lect) : The act ive port automati cally sen ds LACP protoco l packet s.
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88 5-4-6. Filter Database 5-4-6-1. I GMP Snooping The switch su pports IP multicasting. Y ou c an enable IG MP via the web management ’s configuration scree n. In add ition, you can view different multicast groups, VIDs and mem ber por ts, and IP m ulti cast ad dresses that range f rom 224.
89 5-4-6-2. S tatic MA C A dd ress W hen a st atic MAC address is added , i t remains i n the switch' s address table, regardless of wh eth er or not the d evice is ph ysically conne cted to the s witch. This saves t he switch fr om having to re- learn a de vice's MAC addr ess when the device is disconn ected or powe red-off.
90 5-4-6-3. Port Secu rity A port in securit y mode will be “lock ed” with addre ss learning blocked. On ly the incoming packets with SMAC alread y existing in the addres s table can be forwarded norm ally .
91 5-4-6- 4. M A C Fil tering MAC address filtering allows the s witch to drop un wanted traffic. T raffic is f ilt ered ba sed on the destination a ddresses. S teps to sp ecify a M AC address to filter: 1. In the MAC A ddre ss box, e nter the MAC a ddress to f ilter .
92 5-4-7. VL A N Con figuration A Virtual LAN (VLAN) is a logical net work grouping that limits the broa dcast domain. It allows you to isolate net work traffic so only me mbers of the VLAN receive traffic f rom the same V LA N m embers.
93 5-4-7-1. Basic VL AN Configuration By default, there are no V LANs set for the switch. In order to c onfigure any of the different types of VLANs, VLANs need to be enabled in the s witch using Settings/Advanced/Protocol Ena ble Settings/VLAN Operational M ode.
94 switch on separate VLANs except for the port that has the server connected to it. This port is then shared by all t he VLANs. This enables security between ports, but allows all ports access to the server . Create a VLAN and add t agged m ember ports to it.
95 5-4-7-2. Port VID Configure port VID settings: From t he mai n T a g-based (IEEE 802.1Q) V LAN page, cl ick P ort VID S etti ngs. Port VID (PVID) Used for setting the Port VLAN ID th at will b e ass igned to un tagged traffic on a given port .
96 Ingress Filt ering Rule 2 : Drop Untagged Fr ame. By def ault all untagged frames are f orwarded..
97 5-4-8. Sp annin g T ree The S panning-Tree P r otocol (STP) is a standardized me thod (IEEE 802.1D) for avoiding loo p s in switched networks. W hen STP is enab led it ensures that only one path at a time is active between any two nodes on the net work.
98 Information a bout th e current spanning tree status is displa yed in this table. Parameter Description Priority The priori ty value used to i dentify the root bridge can be changed. The bridge with the lowest value has the highest pri ority and is sele cted as the root.
99 The priorit y and path cost can be configured for ea c h port. Click the Ap pl y button to modify the configuratio n . Parameter Descripti on Port Priority A ch ange to the Port Priority affects which p ort will be the root port. The lowest n umber has the highest priorit y .
100 5-4-9. Port Mirroring The Port Mirroring f eature is disabled b y default. Selecting enab le from the pull down m enu will cause the se lected traffic f rom the selected monitor por ts to be mirrored to the selected anal ysis port. Press the Appl y button to submit the change s.
101 5-4-10. SNMP SNMP is a protoco l that governs t he transf er of information be tween management and age nt. The switch supp orts SNMP V1. Any Ne twork Management station running th e Simple N etwork Manag ement Pro tocol (SNMP) ca n manage the switch provide d that the Management Inf ormation Base (MIB) is installed.
102 Read on ly: Enables req uests accompanied b y this string to d isplay MIB- object inf ormation. Read wr ite: Enables req uests accompanied b y this string to d isplay MIB- object inf ormation an d to set MIB o bjects. 3. T rap Manager A trap m anager is a manage ment station that rec eives traps.
103 5-4-1 1. Securit y Ma nager The user can chang e the user name and password to keep the switch secure. The def ault user name and password are be low .
104 5-4-12. TFTP Up date Fi rmware The f oll o wing menu opt ions prov ide some system con trol fu nctions to allow a user to updat e f irmware and remote ly boot the switch sy stem: • Executing TFT P software • Copy f irmware update v ersion image.
105 5-4-13- 2. TFTP Backup Confi guration Use this s creen to se t the TFTP ser ver IP address. Y ou can s ave current EEPROM value f rom here, then go to the TF TP Restore Configuration screen to restore the EEPROM value.
106 5 -4-14. Reset S ystem Reset S witch to defau lt configur ation. 5-4-15. Reboot Select Reb oot to restart the syste m with the cur rent saved co nf i g uration.
107 6. T echnical Specif ica tions This section provides the specif ications of MIL- SM808G s witch product. S tandards Complia nce IEEE 802.3u 100BA SE- FX Fast E thernet IEEE 802.
108 Safet y UL, cUL.
109 7. T roubleshooti ng This section is intend ed to help you solve some co mmon pro blems encountered while u sing the MIL-S M808G switch series. Incorrect connecti ons Faulty or loose cables Look fo r loose or obvious ly faulty conn ections. If they appear to be OK, make sure the connections are sn ug .
1 10 Diagnostic LE D Indicators The switch ca n be easily mon itored throug h panel indicators t o assist in identifying problems. If the power indicator does turn on when the power cord i s plugg ed in, you may have a pr oblem wit h power outl et or power cor d.
1 11 Cabling 100BASE-FX fiber port: Mult i-mode f iber connector t ypes mus t use 50/125 or 62.5/ 125 µ m mu lti-mode f iber cable. T wo devi ces may be connected ove r a 2 kilomet er distance. S ingle-mode f iber connect or types must us e 9/12 5 µ m single-m ode fiber cab le.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Transition Networks MIL-SM808GPXX è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Transition Networks MIL-SM808GPXX - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Transition Networks MIL-SM808GPXX imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Transition Networks MIL-SM808GPXX ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Transition Networks MIL-SM808GPXX, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Transition Networks MIL-SM808GPXX.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Transition Networks MIL-SM808GPXX. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Transition Networks MIL-SM808GPXX insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
