EnterasysメーカーMicroMMAC-Tの使用説明書/サービス説明書
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MicroMMAC-T User's Guide.
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i Notice Enterasys Networ ks reserves the righ t to make changes in specifica tio ns and other informa tio n contained in this docum ent without prior notice. Th e reader should in a ll cases consult Enterasys Networks to determine whether a ny such changes have been made.
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v Contents Chapter 1 Intr oduction Using This Guide ................ ............ ................. ........... ................. ........... ................. ..... 1-2 Related Manuals........................ ........... ................. ...........
Contents vi Accessing the UPS W indow .............. ........... ................. ........... ................. .. 2-25 Setting the UPS ID ............. ........... ................. ............ ................ ............ ....... 2-27 Using the T est Option .
vii Contents The Station Stat istics W indow Performance Fields ........................ ......... 3-20 The Station Stat istics W indow Soft Error Fields ....... ........... ................. ... 3-21 The Station T imer Statistics W indow ............
Contents viii.
1-1 Chapter 1 Intr oduction How to use this guide; r elated gui des; so ftware conv entions; g etting h elp; Micro MMAC- T fir mware v ersions W el come to the NetSight Elemen t M anager for the MicroMMAC-T User ’s Guide .
Introductio n 1-2 Usin g This Guid e NetSight Element Manager provides re mote management for the MicroMMAC-T , including: • Fron t panel status display with administrative state, network load, an d error percenta ges available for each port. • Management Station Configuration.
Rela ted M an u als 1-3 Introductio n W e assume that you have a general working knowledge of T oken Ring IEEE 802.5 type data communications networks and their physical layer components.
Introductio n 1-4 Soft war e Co nv entio ns Figure 1 -1. Mouse Buttons For man y mouse operat ions, this document a ssumes th at the left ( primary) m ouse button is to be used, and references to activating a menu or button will not include instructions abo ut w hich mouse button to use.
Software Conventions 1-5 Introductio n Using Window Buttons The button that appears at the bottom of mo st windows allows you to exit a window and te rminate any unsa ved changes you have made. Y ou may als o have to use this button to close a window after you have made an y necessary changes and set them by clicking on an , , or button.
Introductio n 1-6 Soft war e Co nv entio ns Figure 1-2 . S ample W indow Showing Informati onal T ext Boxes Device Name Displays the user-defin ed name of the device. The device nam e can be changed via the System Group win dow; see the Generic SNMP User ’ s Guide for details.
Getting H elp 1-7 Introductio n Getting Help This section describes two diff erent me thods of getting help for questions or concerns you m ay have while using NetS ight Element Man ager . Using On-line Help Y ou ca n us e the MicroMMAC-T window buttons to obtain information specific to the device.
Introductio n 1-8 Getting Help Netsight_do cs@enterasy s.com T o locate product specific information, r efer to the Enterasys W eb site: http://www .enterasys.com/ . NO TE For the high est firm ware versions suc c essfully tested with NetSi ght Elem ent Manage r 2.
2-1 Chapter 2 The Micr oMMA C-T Chassis Vie w Informatio n displayed in the Cha ssis View window; the Chassis M anager window; Hub manage ment functions The Micr oMMAC-T Chassis V iew window is the main scr een that immediately informs you o f th e current config uration of you r MicroMMAC-T via a gr aph ical display of the device’s front panel.
The MicroMM A C-T Chass is View 2-2 Viewing C hassis Infor matio n Vie wing Chassi s Inf ormatio n The Micr oMMAC-T Chassis V iew win dow ( Figure 2-1 ) provides a graphic repr esentation of the Micr .
Vie wi ng Chas sis I nf ormatio n 2-3 The MicroMM A C-T Chass is View Fr ont P anel Information The areas around the main port display pr ovide the f ollowing device informa tion: IP The IP addr ess a.
The MicroMM A C-T Chass is View 2-4 Viewing C hassis Infor matio n Time The curre nt time, in a 24-hour hh :mm:ss format, set in the interna l clock. Date The curre nt date, in an mm/dd/yyyy format, set in the inte rnal clock.
Vie wi ng Chas sis I nf ormatio n 2-5 The MicroMM A C-T Chass is View . Figure 2 -2. MicroMMAC-T Chassis V iew Menu Structure The D e vice Men u From the D ev ice Menu at the Chassis V iew window menu bar , you can access the followi ng s elections: • D evice T y pe.
The MicroMM A C-T Chass is View 2-6 Viewing C hassis Infor matio n • Edit Device T ime.. . and E di t Device Date... , w hich allow you to set the MicroM MAC-T’s internal clock. See Setting th e Device Date and T ime , page 2-23 , for details • S ystem Group.
Vie wi ng Chas sis I nf ormatio n 2-7 The MicroMM A C-T Chass is View The Network Menu The first level of this menu lists the active ring network ( Network 1 ) that is managed by the device; clicking on the Networ k 1 selection brings up a me nu with the fo llow ing selections : • S tat isti cs.
The MicroMM A C-T Chass is View 2-8 Viewing C hassis Infor matio n The Help Menu The H elp Menu has three selections: • M IBS Supported , which brings up the Chassis Manager window .
Vie wi ng Chas sis I nf ormatio n 2-9 The MicroMM A C-T Chass is View All Station Port menus , regardless of port status , contain the follow ing selections: • Enable/Di sable , which allow you to administratively enable or disable the selected port.
The MicroMM A C-T Chass is View 2-10 Viewing C hassis Inf or matio n Port status view options are: Load If you ch oose L oa d , the port text boxes will display the per centage of network load pr ocessed by each port during the last po lling interval.
Vie wi ng Chas sis I nf ormatio n 2- 11 The MicroMM A C-T Chass is View P ort Assignment Y ou ca n view two Po r t A ss ig nme nt categories for your ports: • If yo u se lec t F NB V i ew , the port text boxes w ill display their current FNB connection status.
The MicroMM A C-T Chass is View 2-12 Viewing C hassis Inf or matio n The Chassis Manager Window Like most networking devices, Cabletr on’s devices draw their functionality fr om a collection of pr oprietary MIBs and IETF RFCs.
Managing the Hub 2-13 The MicroMM A C-T Chass is View Device T ype Choosing the D evice T ype... option from the D evice menu brin gs up a window that describes the management device being modeled: Figure 2-4.
The MicroMM A C-T Chass is View 2-14 Mana ging the Hu b Managem ent Station Config uration Selecting C onfiguration... fr om the D ev ice menu will invoke th e TR M anagement Station Configuration win dow , where you can configure the module’s onboard managem ent stati on.
Managing the Hub 2-15 The MicroMM A C-T Chass is View Setting Station Name and Location The Station Name text box all ows you to as sign a nam e to your ring mana gement station. T o set the manag e ment station na me: 1. In the Network list in the upper r ight cor ner of the window , dou b le-click on the Network 1 sele ction.
The MicroMM A C-T Chass is View 2-16 Mana ging the Hu b 3. T ype in th e desired m anagem ent statio n locatio n, being s ure to us e the appropr iate dotted de cimal for mat. 4. Click on OK . The l ocation will change in the te xt box, and then at the MicroM MA C-T manag ement stat ion itsel f.
Managing the Hub 2-17 The MicroMM A C-T Chass is View identified, all ports which wer e previously turne d off ar e turned back on. The failing port will be retried o nce at a pr e-determined interval; if beaconing continues, the port will remain disabled.
The MicroMM A C-T Chass is View 2-18 Mana ging the Hu b station li st, an d transmit a R e move Ring Sta tion MAC frame to th e offending station. This option is enabled by defau lt.
Managing the Hub 2-19 The MicroMM A C-T Chass is View Figure 2 -9. Th e Network Inform ation W indow Networ k Inf ormation Windo w Fields Network Name This field allows you to assign a name to the selected ring network; to do so, simply click on the I-bar cursor , and enter the desired name in the resulting window .
The MicroMM A C-T Chass is View 2-20 Mana ging the Hu b X (Ring) of X (Configured Rings) This field indicates the currently selected ring and the number of co nfigured rings in the hub. Vie wi ng Mo du le S t atus The T oken Ring Boa rd Sta tus window ( Figure 2-10 ) updates yo u on the conditi on of a selected module in the HubST ACK.
Managing the Hub 2-21 The MicroMM A C-T Chass is View Board Name Displays the na me assigned to the selected mo dule; you can edit this name by clicking on the I-bar cursor and entering a n ew name in the r esulting window . Station P orts The number of station port co nnectors present o n the selected module.
The MicroMM A C-T Chass is View 2-22 Mana ging the Hu b Figure 2 -1 1. The Ring Port Status W indow Ring P ort Status Window Fields The window contains the following fields: Board Number The HubST ACK Inter connect Bus port number on the Micr oMMAC-T occupied by the module containing th e selected ring port.
Managing the Hub 2-23 The MicroMM A C-T Chass is View If you are attaching a ring port o n a mo dule that suppo rts autowrap to a ring port on an older device that does no t (or to a thir d party devi.
The MicroMM A C-T Chass is View 2-24 Mana ging the Hu b 3. Enter the new time in a 24-ho ur hh:mm: ss format b y high lighting t he field you wish to c hange and using the up and down ar row b uttons t o change t he time. 4. Click on OK to s a v e y our c hanges, or on Cancel to canc el.
Managing the Hub 2-25 The MicroMM A C-T Chass is View Accessing the UPS Window At the UPS window , you can configur e the UPS ID model type for the uninterruptable po wer supply you have attached to the appropr iate port on your Micr oMMAC-T .
The MicroMM A C-T Chass is View 2-26 Mana ging the Hu b UPS ID Displays the manufacture r and model type code of the UPS attach ed to the modem port of the M icroMMAC- T . Y ou must a ssign this typ e code for the UPS window to be ac tive. (See Setti ng the UPS ID , below , for instructio ns for s etting the type code for your UPS.
Managing the Hub 2-27 The MicroMM A C-T Chass is View Setting the UPS ID Y ou need to set the UPS ID typecode that indicates the manufactur er and model of the UP S. T o set the U PS ID: 1. Click on the arr o w next to the SET UPS ID te xt box. A Model numbe r menu will app ear .
The MicroMM A C-T Chass is View 2-28 Mana ging the Hu b A software reset will now be performed for the MicroMMAC-T . All counters for the current Micr oMMAC-T -managed ring r eturn to their initial values, and the device will r e-insert into the ring.
Managing the Hub 2-29 The MicroMM A C-T Chass is View Figure 2-15. The Port Map W indow 3. Click on the P ort Map E nable radio button to activate por t mapping for the por t, or the P ort Map Disa bl e radio button to tur n o ff por t m apping. 4. Click OK .
The MicroMM A C-T Chass is View 2-30 Mana ging the Hu b Figure 2-16. Th e Link T rap W indow 3. Click on the Link T rap Enable radio button to acti v a te link traps for the por t, or the Link T rap Disable radio button to tur n off lin k traps. 4. Click OK .
Managing the Hub 2-31 The MicroMM A C-T Chass is View If you selected AutoMode, the module will now be configured to operate according to its default hardware settings. Note that if a set is made to the module using NetSight Element Manager , the module will automatically return to managem ent mod e .
The MicroMM A C-T Chass is View 2-32 Viewing I/F Su mmar y Infor mation T o enable or disable individual ring-in/out ports on the Micr oMMAC-T : 1. Click on the Po r t I n de x for the desired r ing-in /out por t. The Ring P o r t me nu will appear. 2.
Viewing I/F Summ ar y Inform ation 2-33 The MicroMM A C-T Chass is View Figure 2-17. I/F S ummary W indow The I/F Summary window pr ovides a variety of descriptive information about each interface on your device, as well as statistics which display each interface’s performance.
The MicroMM A C-T Chass is View 2-34 Viewing I/F Su mmar y Infor mation Interface Performance Statistics /Bar Graphs The statistical values (and, wher e available, the accompanying bar gra phs) to the right of the interface description fields provide a q uick summary of interface performance.
Viewing I/F Summ ar y Inform ation 2-35 The MicroMM A C-T Chass is View Out Packets Packets transmitted, at the r equest of a higher level proto col, by the device int erface to a subnetwork addr ess (bot h un ic ast and non- uni c as t ) .
The MicroMM A C-T Chass is View 2-36 Viewing I/F Su mmar y Infor mation Figure 2 -18. Interface Deta il W in dow Three informational field s appear in the upper portion of the wind ow: Description Displays the interface description for the curre ntly selected interface: Ethernet.
Viewing I/F Summ ar y Inform ation 2-37 The MicroMM A C-T Chass is View Non-Unicast Displays the number of packets transmitted to or r eceived fr om this interface tha t had a destination addr ess that is r ecognized by mor e than one device on the network segment.
The MicroMM A C-T Chass is View 2-38 Viewing I/F Su mmar y Infor mation Transmitted Errors /Packets Transmitted T o calculate the total number of inbound a nd outbound discards: Received Discards + Tr.
3-1 Chapter 3 T oken Ring Statistics Using St atistics window f eature s; monito ring ring- le v el sta tistics, tim er statist ics, and performan ce graphs; monitor ing m anagement s tatio n statisti.
T o k en Ring St atis tics 3-2 Statis tics Window F eatures Using these radio b uttons, you can choos e whether to view the statis tics gathered since the Micr oMMAC-T was last restarted or (if you ar.
St at is t ics Wind ow F ea tur es 3-3 T oken Ring Sta tistics • Peak (Magenta) — Indica tes the maximum level of activity over all time intervals sin ce the window wa s invoked.
T o k en Ring St atis tics 3-4 Networ k Lev el Stat istics 4. Click on OK . The n ew Time Inter val will ta ke eff ect for the current instanc e of the window in which you ha v e set it. Remember , the poll inter val retur ns to its default v alue each time you close, and then re-open a statistic s window .
Network Le v el Stat istics 3-5 T oken Ring Sta tistics Ring Speed The operating speed (4 Mbit/sec o r 16 Mbit/sec) of the curr ent ring. Figure 3 -4. The Network Stat istics W indow By using the radi.
T ok en Ri ng Sta tis tics 3-6 Networ k Lev el Stat istics Ring Purges Displays the number of times the active moni tor has purged the ring since the network was created, or since the M icro MMAC-T was last re set. This includes the purge at the end of the active moni tor selection process.
Network Le v el Stat istics 3-7 T o ken Ring Statis tics The first station detecting the da ta corruption sets the E bit to 1 in the ending delimiter of the frame and logs the err or . This prevents other stations fr om logging th e error and isolat es the portion of the line which is caus ing the data corruption.
T ok en Ri ng Sta tis tics 3-8 Networ k Lev el Stat istics Lost Frames Displays the number of lost frame errors detected on the ring. The se occur when a station is tr an smitting a nd its TR R (T imer , Return to Repeat ) tim er expires. This timer ensures that the station returns to the data repeat state.
Network Le v el Stat istics 3-9 T o ken Ring Statis tics T o ta l E rro rs The sum of all err ors currently r ecor ded. Netw ork Timer Statistics Y o u can use the Network T imer Statistics window ( F.
T ok en Ri ng Sta tis tics 3-10 Networ k Lev el Stat istics Frames Displays the elapsed, average, an d peak levels of good frames transmitted on the network. Errors Displays the elapsed, average, an d peak levels of err ors received by the n etwork. KBytes Displays the elapsed, average, an d peak levels of kilobytes processed by the network.
Network Le v el Stat istics 3-11 T o ken Ring Statis tics Networ k P erf ormance Graph Statistics The Networ k Perfo rmance Graph co nta ins th e f ollowin g statis tic s : Netw ork Events (Red) T otal Errors The total number of soft err ors of any kind processed by the networ k.
T ok en Ri ng Sta tis tics 3-12 Networ k Lev el Stat istics The Frame Siz e Window At the Frame Size wind ow , F igure 3-7 , you can see the actual sizes o f the frames on the ring network contr olled by your Micro MMAC-T .
Network Le v el Stat istics 3-13 T o ken Ring Statis tics • Click on the To t a l radio but ton. The numbers to the left of the selected graph (in the color -coded boxes) display the total count of frame sizes pr ocessed since the most rec ent start-up of the Micr oMMAC-T .
T ok en Ri ng Sta tis tics 3-14 Networ k Lev el Stat istics The Pr otocol Statisti cs Window At the Protocol Statist ics window ( Figu re 3-9 ) you can see how many frames ar e received by the MicroMMAC- T for a given pr otocol.
Managemen t Stati on Statis tics 3-15 T o ken Ring Statis tics • Click on the To t a l radio button. The wi ndow will no w display t he total count of pr otocol types processed since the most recent start- up of the MicroMM AC-T . The dynamic bar graph or pie char t to the right of the numbers reflects counts pr ocessed since the last start-up.
T ok en Ri ng Sta tis tics 3-16 Manag ement Stati on Sta tistics Figure 3-10. The TR Manageme nt Station S tatistic s Window This window also lists both soft a nd hard er ror con ditions detected by the MicroMMAC-T’s management sta tion, as explai ned in th e following section s.
Managemen t Stati on Statis tics 3-17 T o ken Ring Statis tics A.C. Error s The count detected by the management station o f frames (Protocol D ata Units or PDUs) containing err ors in the A or C bits. Abort Sequen ces The management station’s count of abort sequences detected on the ring, which were issued by ring stations during transmi ssion.
T ok en Ri ng Sta tis tics 3-18 Manag ement Stati on Sta tistics T ransmitted Beacons Beacon frames ar e transmitted by ring stations when certain e rror co nditions are detected.
P or t Lev el Sta tistics 3-19 T o ken Ring Statis tics P or t Level Statistics Through the Station Po rt pull -down menu , you can view statisti cs for a stati on inserted into a ring, and graph ically monitor the selected statio n via T i mer Statistics and the Performan ce Graph.
T ok en Ri ng Sta tis tics 3-20 P or t Lev el Sta tistics Figure 3-1 1. T he S tation St atistics W indow The Station Statistics Windo w General Fields The Station Statistics windo w contains the fo llowing fields: Station Name Use this editab le field to assign a name to the station attached to the selected port.
P or t Lev el Sta tistics 3-21 T o ken Ring Statis tics The Stat ion Sta tistic s Windo w Soft Er ror Fields The following fields br eak down soft err ors for the selected station. Line Error s The count of line err ors detected by the selected station port.
T ok en Ri ng Sta tis tics 3-22 P or t Lev el Sta tistics Frequency Err ors The number of times the selected station has detected that the inco ming signal’s freq uency differ ed fr om the e xpected fr equency by mor e than allowed. T o ta l E rro rs The total number of e rrors accounted fo r by the selected port.
P or t Lev el Sta tistics 3-23 T o ken Ring Statis tics The T imer Statistics char t au tomatical ly updates withi n the ti me interval you have set. Set the time interval to upda te in formation (from 1 second to 23 ho urs, 59 minut es, 59 seconds) b y usin g the clock symbol at the bottom of the window .
T ok en Ri ng Sta tis tics 3-24 P or t Lev el Sta tistics Figure 3-13. Station Port Performance Graph The graph has an x axis that indicates the 60 second interval o ver which charting occurs continuously , while the y axis measures the amount of traffic or err ors that are pr ocessed by the station port.
P or t Lev el Sta tistics 3-25 T o ken Ring Statis tics T raffic ( Blu e) Frames The total number of good f rames transmitted and received by the station port. Percent Lo ad Reflects the network load generated by the station port compared to the theoretical m aximum load (4 or 16 Mbits/sec.
T ok en Ri ng Sta tis tics 3-26 P or t Lev el Sta tistics.
4-1 Chapter 4 T oken Ring Alarms The ri ng-lev el Alar m Limit s wind ow; setting alar m l imits for network e v ents; ac cessing the Stat ion Alar m Lim its window; setti ng station -lev el alar m li mits Alarms work in conjunction with NetSight Element Manager to info rm you when certain defined thresholds have been reached.
T ok en Ri ng Al arms 4-2 Ring-Level Alar m Limits Accessing the Alarm Limits Window T o access the Alarm Limi ts wi ndow from the Chassis View window: 1. Cl ick t o displa y the N etw ork pull-down menu. 2. In the Netwo rk p ull-down menu, cl ick on the Network 1 entr y , then drag r ight and down to s elect A la rm Limits.
Ring -L e vel Al arm L imit s 4-3 T o ken Ring Alar ms T oken Errors The threshold of errors r equiring the mana gement station (wh ile a cting as the act ive monitor) to tra nsm it a token onto the monitor ed ring befor e it issues an alarm. The default value is 10.
T ok en Ri ng Al arms 4-4 Ring-Level Alar m Limits The following thresholds, lis ted in the section of the wi ndow labeled Stat ion Errors , are based on the number of occurr ences of th e selected event detected by the station within a user -defined time interva l.
Statio n-Lev el Alar m Li mits 4-5 T o ken Ring Alar ms 4. Highligh t the hour , minute , or second fi eld, and t ype the de sired i nter val in each ( or click the cursor i n the d esired field, a nd click on the approp riate arrow to scroll the inter val up or down).
T ok en Ri ng Al arms 4-6 Stati on-Lev el Alar m Lim its Accessing the Station Alarm Limits Window from the Station List T o access the Station Alarm Limits window via the Station List wi ndow: 1.
Statio n-Lev el Alar m Li mits 4-7 T o ken Ring Alar ms Figur e 4-2. The Station Al arm Limi ts W indow Sett ing St ati on- Le vel Alar m L imit s T o set an alarm for an individual station on the rin g: 1. Place th e te xt cur sor into th e desir ed alar m ev ent field , and type in the threshold value.
T ok en Ri ng Al arms 4-8 Stati on-Lev el Alar m Lim its Y our st ation alarm limits are no w set. When an alarm thr eshold is exceeded, an alarm will be generated. T o view a lis t of the alarms, check NetSight Element Manager ’s a larm logging f aci lity .
5-1 Chapter 5 The Station List and Station Map The Station List window and fiel ds; viewing stati on stati stics; rem oving a stat ion from the ring ; the Statio n Map; the S tation Com mand m enu; ma.
The Station List and Statio n Map 5-2 The St ation List W indow Figure 5-1. The S t a tion List W indow Station List Window Fields The Station List window contain s the following fields: General Fields Active Monitor The physical address of the curr ent activ e monitor on the ring you are monitoring.
The Station List Window 5-3 The Stati on List a nd Station Map Station Fields # (S tati on N um ber) The numerical or der of the station in downstr eam relation from the Micr oMMAC-T man agement s tation. MA C Address The addr ess of the station in T oken Ring (Canonical) or Ethe rnet (MAC) format.
The Station List and Statio n Map 5-4 The St ation List W indow Vie wing Station Timer Statistics T o view Station T im er Statistics: 1. Click on the Timer St atistics radio button a t the bo ttom left of the window . 2. Double-click on the s tation for which you want to vi e w Time r Statistic s.
The Station List Window 5-5 The Stati on List a nd Station Map T o invoke the Station Alarm Limits window: 1. Click on the Alarm Limits r adio button at th e bottom left of the window . 2. Double-click on the s tation for which you want to set the alar m l imits.
The Station List and Statio n Map 5-6 The Station Map Resetting Counters T o reset all error and performance counters for the curre nt ring managed by the MicroMMAC-T , click on the # (Station Number) symbol atop the station inde x number colum n. A dialog box will appea r showing the last reset time (if an y) and “Reset All Counters Now?”.
The Station Map 5-7 The Stati on List a nd Station Map Figure 5-2 . T he St ati on Ma p W i ndow Note that this map wil l update automaticall y to reflect a change in the ring network (e.g., a stati on removing itself f rom or insertin g into the ring).
The Station List and Statio n Map 5-8 The Station Map Vie wing the Stati o n Map The Station Map w indo w displays your ring in a s crollable panel. The ring is re presented by a single ellipse, with arro ws indicating the ring direction.
The Station Map 5-9 The Stati on List a nd Station Map Figur e 5-3. Statio n Map with T ext Boxes 3. T o positi on the stat ion text box in the r ing map, drag the mouse wh ile depress ing the left button. The sta tion text bo x will reposition in the pan el in relation to the cu rsor drag.
The Station List and Statio n Map 5-10 The Station Map The Station Co mmand Menu Y ou can also use the mous e to brin g up a command men u, which will a llow you to access Statist ics or Ti mer Statistics specif ic to the selected station, as well as remove the station fr om the ring, and invoke the Station A larm Limits windo w .
The Station Map 5-11 The Stati on List a nd Station Map Manipulatin g the Station Map Y ou ca n m anipulate the station ma p by magnifying po rtion s of the map, rotating the ring, or r esizing the map window .
The Station List and Statio n Map 5-12 The Station Map Rotating the Station Map Y ou can use the scroll bar to r otate the station map, as fo llows and as illust rated in Figure 5-5 : Figure 5 -5.
The Station Map 5-13 The Stati on List a nd Station Map Resizing the Station Map Window Y ou can resize the Station Map win dow jus t like a ny other window , by moving the cursor to the window’s boundary ( the cursor will display as a two-headed arrow), depr essing the left mo use button, and dragging to shrin k or expand the window .
The Station List and Statio n Map 5-14 The Station Map.
Index-1 Index Symbol s # (Station Num b er) 5-3 A A.C. 4-4 A.C. Err ors 3-7, 3-17, 3-21 Abort S equenc es 3-7, 3-17, 3- 21 ABRP 2- 16 Active 2-11 Active Mon itor 3-5, 5-2, 5-7 Active Monitor Presen t .
Index Index-2 F F .C. Errors 3-8, 3-21 FC Errors 3-17 Firmware, revision 2-3 FNB V iew 2-11 Frame Check Sequence (FCS) 3-6 Frame Copied Indicator (FCI) 3-7 Frame Count 4-3 Frame Size W indow 3-12 Fram.
Index-3 Index O OFF 2-1 0 OK button 1-5 ON 2-10 On-l ine Help 1- 7 P Packets Received 2-37 Packets T ransmitted 2-37 Phantom Curr ent 2-22 Physical Sta tus 2-33 pie chart 3-13, 3-15 Port 2 -22, 5-3 Po.
Index Index-4 TRR (T im er , Return to Repeat) 3-8 TVX (T imer , V alid T ransmi ssion) 3-8 U Unicas t 2-36 Unit Failed 2- 26 Unit in test... 2-26 Unit OK 2-26 Unknow n Protocol 2 -37 Up 5-9 Up T ime .
デバイスEnterasys MicroMMAC-Tの購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Enterasys MicroMMAC-Tをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはEnterasys MicroMMAC-Tの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Enterasys MicroMMAC-Tの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Enterasys MicroMMAC-Tで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Enterasys MicroMMAC-Tを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はEnterasys MicroMMAC-Tの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Enterasys MicroMMAC-Tに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちEnterasys MicroMMAC-Tデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
