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INTRODUCTION

 

Page 1-7

The second filtering process, the Cabletron Systems Special Filtering 
Database, provides an additional step in the filter/forward decision. 
Through Remote Management, you can define up to 10 additional 
filtering parameters for incoming network traffic. These parameters 
include (but are not limited to) the:

•

destination address

•

source address

•

type field (protocol)

•

64 bytes of the data field (using a data offset).

For example, using this process, you can ensure that the ETWMIM 
always filters or forwards packets with a specific protocol or address.

 

1.5.3

Source Route Bridging

 

Source Route Bridging, currently used in Token Ring and WAN 
networks, operates by transmitting frames over a designated route. 
Unlike Transparent Bridging, all devices in a Source Route Bridged 
(SRB) network “know” the locations of other stations within the 
network. Using a portion of the MAC frame header, the source bridge 
determines the route for the frames it sends.

In order for source routing to work, the source station must determine 
the proper route to reach the desired destination. To accomplish this:

•

The source station sends out frames called All Route Explorer 
(ARE) frames onto the network. All Source Route Bridges 
recognize these ARE frames and copy them into their outbound 
port tables.

•

The receiving bridges append their own route information to 
the Route Information Field (RIF) in the MAC frame header 
and transmit the frame again.

•

Eventually, the original source device receives all of the ARE 
replies from the other Source Route Bridges on the network.

•

From this information, the source device can determine a 
desired route for each frame it transmits.

Содержание ETWMIM

Страница 1: ...ETWMIM ETHERNET TOKEN RING WAN MEDIA INTERFACE MODULE USER S GUIDE CABLETRON SYSTEMS P O Box 5005 Rochester NH 03867 0505 ...

Страница 2: ...IONS AND OR EQUIPMENT MANUFACTURER TO VERIFY CONFIRM YOUR EQUIPMENT IS SUITABLE FOR INSTALLED APPLICATION CARDS CAUTION ALWAYS DISCONNECT T1 BOARD THE ONE WITH THE TELEPHONE PLUG JACK FROM THE TELEPHONE SYSTEM WHEN INSTALLING OR WHEN THE COVERS ARE REMOVED FROM THE HOST PRODUCT CAUTION APPLY THE ENCLOSED ADHESIVE WARNING LABEL TO THE OUTSIDE OR INSIDE OF THE EQUIPMENT ENCLOSURE ADJACENT TO THE T1 ...

Страница 3: ...d ensure that it is permissible to be connected to the facilities of the local telecommunications company The equipment must also be installed using an acceptable method of connection In some cases the company s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly telephone extension cord The customer should be aware that complia...

Страница 4: ...ll be interpreted and governed under the laws and in the state and federal courts of New Hampshire You accept the personal jurisdiction and venue of the New Hampshire courts EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY 1 EXCLUSION OF WARRANTY Except as may be specifically provided by Cabletron in writing Cabletron makes no warranty expressed or implied concerning the Program including Its doc...

Страница 5: ...l respects is proprietary data belonging to Cabletron and or its suppliers For Department of Defense units the product is licensed with Restricted Rights as defined in the DoD Supplement to the Federal Acquisition Regulations Section 52 227 7013 c 1 ii and its successors and use duplication disclosure by the Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in...

Страница 6: ...CATIONS 2 1 MMAC REQUIREMENTS 2 1 2 2 COM 2 PORT AND TERMINAL REQUIREMENTS 2 2 2 3 OPERATING SPECIFICATIONS 2 5 2 3 1 Environmental Requirements 2 5 2 3 2 Safety 2 6 2 3 3 Physical 2 6 CHAPTER 3 INSTALLING THE ETWMIM 3 1 UNPACKING THE ETWMIM 3 1 3 2 SETTING THE CONFIGURATION SWITCHES 3 2 3 2 1 Setting the Switch Bank SW2 3 3 3 2 2 Ethernet Connection Switch SW4 3 4 3 3 INSTALLING THE ETWMIM 3 4 3 ...

Страница 7: ...lds 5 7 5 4 3 Setting the IP Address Table and Subnet Mask Field 5 8 5 5 SETTING THE TRAP TABLE 5 9 5 5 1 ETWMIM Trap Table Screen 5 9 5 5 2 Trap Table Screen Fields 5 10 5 5 3 Configuring the Trap Table 5 10 5 6 SNMP TOOLS 5 11 5 6 1 Accessing The SNMP Tools Screen 5 11 5 6 2 SNMP Tools Screen Fields 5 12 5 6 3 The Security Access Level 5 13 5 6 4 Getting And Setting OIDs 5 14 5 6 5 Scrolling Thr...

Страница 8: ...Mode Fiber Optic Cable Requirements for the EPIM F3 A 4 A 1 4 Thin Net Cable Requirements for the EPIM C A 5 A 1 5 AUI Cable Requirements for the EPIM A and EPIM X A 6 A 2 EPIM CONNECTOR SPECIFICATIONS A 7 A 2 1 EPIM T 10BASE T Twisted Pair Port A 7 A 2 2 EPIM F1 and EPIM F2 Multimode Fiber Optic Ports A 8 A 2 3 EPIM F3 Single Mode Fiber Optic Port A 9 A 2 4 EPIM C BNC Port A 11 A 2 5 EPIM A and E...

Страница 9: ...IX B DOWNLOADING AN IMAGE FILE B 1 GETTING STARTED B 2 B 2 SETTING UP A UNIX WORKSTATION AS A RARP SERVER B 3 B 3 STANDARD LOCAL DOWNLOAD B 5 B 4 REMOTE RUNTIME DOWNLOAD B 6 APPENDIX C FCC PART 68 USER S INFORMATION INDEX ...

Страница 10: ...ge filtering and use of the bridge in multiple bridge environments Chapter 2 Installation Requirements Specifications lists hardware location and environmental requirements that must be met before you install the ETWMIM Chapter 3 Installing the ETWMIM contains instructions for installing the ETWMIM optional EPIM and optional T1 SRM Chapter 4 Using LANVIEW describes how to use Cabletron Systems bui...

Страница 11: ...CTRON from any prompt Internet mail support ctron com 1 3 OVERVIEW The ETWMIM module resides in an MMAC hub and acts as an interface between various Ethernet and Token Ring LANs as well as providing a synchronous serial WAN port Cabletron also offers an optional T1 SRM module for the ETWMIM The T1 SRM provides an RJ 48C interface to provide wide area network connectivity The ETWMIM can bridge for ...

Страница 12: ...e ETWMIM stores the new image in Flash memory It continues to operate with the old firmware image executing in processor memory until you reset the ETWMIM Management An RS 232 port gives you direct access to ETWMIM Local Management Local Management provides unique set and control capabilities for your ETWMIM You access Local Management through the COM 2 port using a VT series terminal or a compute...

Страница 13: ...e meets AT T 62411 standard requirements See Chapter 5 Local Management for Configuration instructions MIB Support For additional information on how to extract and compile individual MIBs contact Cabletron Systems Technical Support see Getting Help The ETWMIM supports the following MIBs IETF Internet Engineering Task Force Full Standard MIB MIB II RFC1213 IETF Proposed Standard MIBs Bridge MIB RFC...

Страница 14: ...ry and determines the type of frames depending on the receiving port where the frames came from source address and if it has seen frames from this address before learning where the frames are going destination address and if it has received frames from this address before filtering database look up whether to forward send on or filter any of these frames database look up result what port channel t...

Страница 15: ...e MAC physical addresses using the SAT to make forwarding decisions The ETWMIM prevents unnecessary network traffic from passing through the module by implementing two separate filtering processes IEEE 802 1d or Cabletron s Special Filtering Database The ETWMIM can use these processes individually or in tandem The first process the IEEE 802 1D filtering process begins with the creation of a list o...

Страница 16: ...ransparent Bridging all devices in a Source Route Bridged SRB network know the locations of other stations within the network Using a portion of the MAC frame header the source bridge determines the route for the frames it sends In order for source routing to work the source station must determine the proper route to reach the desired destination To accomplish this The source station sends out fra...

Страница 17: ...e bridges then apply the Spanning Tree Algorithm STA to select a root bridge and then determine primary data paths within potential data loop configurations Spanning Tree Algorithm is a hierarchy or tree of priorities that bridges establish between themselves This hierarchy guarantees that primary and redundant data paths are clearly defined at all times so that the network is continuously availab...

Страница 18: ...2 1 MMAC REQUIREMENTS The ETWMIM should be installed in an MMAC equipped with a Flexible Network Bus either an MMAC 3FNB MMAC 5FNB or an MMAC 8FNB Note The FNB is a full height full width backplane that links Cabletron Systems FDDI or Token Ring products Upgrade kits for MMAC 3s and MMAC 8s without an FNB are currently available Contact Cabletron Systems Technical Support for more information Two ...

Страница 19: ...sts the specifications for the front panel COM 2 port and the necessary terminal requirements to access ETWMIM Local Management An RJ 45 connector provides the interface to a management terminal The maximum COM 2 cable length is 50 feet Figure 2 1 illustrates the required pin configuration MMAC Chassis Part MMAC 3FNB FC000000000 or above MMAC 5FNB CC000000000 or above MMAC 8FNB CG000000000 or abov...

Страница 20: ...erminal is a Digital Equipment Corporation VT series terminal press F3 to access the Setup Directory Pin 1 RJ 45 CONSOLE PORT CLEAR TO SEND 2 3 5 7 RECEIVE TRANSMIT SIGNAL GROUND RJ 45 TO 25 PIN CABLE FEMALE 25 Pin D Shell Connector 20 DATA TERMINAL READY 4 1 5 2 6 TRANSMIT RECEIVE DATA SET READY DATA TERMINAL READY SIGNAL GROUND CONSOLE PORT RJ 45 LOCAL MANAGENT CONSOLE RECEIVE TRANSMIT SIGNAL GR...

Страница 21: ...sor Keys Normal Cursor Keys Communications Setup Transmit Transmit 9600 Receive Receive Transmit X 64 any option Bits Parity 8 Bits No Parity Stop Bit 1 Stop Bit Local Echo No Local Echo Port EIA Port Data Leads Only DEC 423 Data Leads only Transmit any option Auto Answerback No Auto Answerback Keyboard Auto Repeat any option Setup Keyclick any option Margin Bell Margin Bell Warning Bell Warning B...

Страница 22: ...25 Synchronous Interface supporting RS232 9600 19 2Kbps RS422 RS449 9600 2 048 Mbps V 35 9600 2 048 Mbps Optional T1 SRM Interface supporting FT1 24 channels 56 64 Kbps T1 1 544 Mbps Bridging Standard IEEE 802 1d Standard IEEE 802 5 Token Ring CPU Memory 4 MBytes Dynamic RAM expandable to 12 MBytes Buffer Memory 4 MBytes 2 3 1 Environmental Requirements Operating Temperature 5 to 40 C Non Operatin...

Страница 23: ...and EN 55022 Class A and the EMC requirements of EN 50082 1 Warning It is the responsibility of the person who sells the system to which the ETWMIM will be a part to ensure that the total system meets allowed limits of conducted and radiated emissions 2 3 3 Physical Dimensions 11 5 H x 2 0 W x 13 4 D inches 29 21 cm x 5 08 cm x 34 04 cm Weight Unit 2 4 lbs Shipping 4 9 lbs ...

Страница 24: ... Electrostatic Discharge ESD can damage the ETWMIM Observe all precautions to prevent electrostatic discharges when handling the ETWMIM These precautions include wearing the disposable wrist strap included in your shipping package holding only the edges of the board or the metal front panel and not touching the components or surface of the board To unpack the unit 1 Carefully remove the ETWMIM fro...

Страница 25: ...slide switch You must set these switches before installing the ETWMIM Figure 3 1 illustrates the location of these items on the ETWMIM board Figure 3 1 Location of Switches ETWMIM Front Panel Ethernet Connection Switch SW 4 Switch Bank SW 2 1 2 3 4 5 6 7 8 ON OFF Front Panel EPIM Connection Rear Panel BackplaneConnection Refer to Table 3 1 For Settings ...

Страница 26: ...he OFF position and leave it there This change in position activates the switch function Switch Function Settings indicates factory default 1 Clear NVRAM N A Toggle Switch 2 bootp download N A Toggle Switch 3 Ctron Use Only N A 4 Token Ring Speed ON 16 Mbits OFF 4 Mbits 5 SYNC Port Clear to Send ON CTS toggles with signal OFF CTS forced on 6 SYNC Port Data Set Ready ON DSR toggle with signal OFF D...

Страница 27: ...d If the ETWMIM is going to use the backplane A channel Ethernet Channel in your MMAC hub the hub MUST have an Ethernet management device e g IRM IRM 2 etc in the far right slot If the ETWMIM is going to use the front panel EPIM for Ethernet connectivity you DO NOT need an Ethernet management device in your hub If the ETWMIM is going to bridge Token Ring traffic and you are using a non shunting MM...

Страница 28: ...n the MMAC 5 Press gently to seat the module into the backplane Do not try to force the module into place or use the knurled knobs to draw the module into the backplane Forcing a misaligned module into place can damage the ETWMIM or the MMAC backplane 6 Turn on the MMAC chassis Figure 3 2 Installing the ETWMIM 3 4 INSTALLING AN EPIM The ETWMIM allows for an optional Ethernet Port Interface Module ...

Страница 29: ...eed the following tools disposable static wrist strap provided with your ETWMIM 5 16 nut driver or equivalent After obtaining the necessary equipment refer to Figure 3 4 and proceed as follows 1 Using the nut driver remove the T1 cover plate lock nuts from the inside of the ETWMIM faceplate 2 Remove the T1 cover plate and save it in the event you want to remove the T1 SRM at a later date 3 Remove ...

Страница 30: ...l the way into the connector holes to ensure proper contact Note Failure to make proper pin contact may result in poor network performance board malfunctions or Local Management Configuration Screen omissions 7 Replace the lock nuts and tighten them down with the nut driver Figure 3 4 Installing the T1 SRM EPIM RWRP CLN NSRT E T TOKEN RING WAN ETHERNET C O M 2 C O M 1 S Y N C TST DSR RTS DTR CTS L...

Страница 31: ...may ask that the output of the T1 SRM be attenuated because it is over driving the T1 circuit The service provider will advise you if the setting should be 7 5db or 15db Changing the LBO from 0db to 7 5db or 15db decreases the output of the T1 SRM Warning After the time of service installation the LBO switch should NEVER be adjusted If you are experiencing a loss of signal or other difficulties it...

Страница 32: ...e 3 5 COM Connections Connect the console to the ETWMIM as follows 1 Attach the male RJ 45 connector to the ETWMIM COM 2 port 2 Attach the female end 25 pin or 9 pin as applicable to the COMM port on the terminal 3 8 FINISHING THE INSTALLATION The ETWMIM is now ready for operation Before placing the network into service test the installation thoroughly making sure that all stations are able to be ...

Страница 33: ...Ds to observe network status or diagnose network problems Figure 4 1 displays the LANVIEW LEDs on the ETWMIM Figure 4 1 LANVIEW LEDs ETWMIM SN BOK ERR STBY RCV XMT CLN EPIM E STBY 16MB LWRP NSRT RWRP T STBY CTS DSR TST RTS DTR LNK S Y N C SYNC RESET TST LOS YEL ALM RED ALM T 1 L B O 15 7 5 0 db System Status LEDs Token Ring Status LEDs Ethernet Status LEDs Sync Port Status LEDs T1 Port Status LEDs...

Страница 34: ...tion ERR Error On Indicates the detection of a hardware failure This LED should not be on during normal operations If the problem persists contact Cabletron Systems Technical Support Off Indicates normal operating conditions 4 2 ETHERNET STATUS LEDs STBY Standby Standby is an inactive state where the module is not passing data on the station connection Standby is set reset via Local Management or ...

Страница 35: ...is being transmitted through the Ethernet port The flash is pulse stretched for viewing effect Off Indicates the ETWMIM is not transmitting data packets CLN Collision Flashing Indicates a detected collision The flash is pulse stretched for viewing effect Off No collisions detected EPIM Ethernet Port Interface Module On Indicates the Ethernet Connection Switch SW4 is set to the forward EPIM positio...

Страница 36: ...es that the module ring speed is set to 4 Mbps LWRP FNB Left Wrap The LWRP LED indicates the state of the FNB left trunk connection On Indicates that the left FNB ring connection has been set to the wrap state by network management Off Indicates normal operation The FNB left connection is in a non wrap state When this LED is on it indicates that the left FNB ring connection has been set to the wra...

Страница 37: ...e the LED lights when the service provider loops up the ETWMIM or the ETWMIM loops back as with power up diagnostics Off Indicates normal operation LOS Loss of Signal On Indicates that the T1 SRM is not receiving any pulses from the T1 circuit Off Indicates normal operation YEL ALM Yellow Alarm On Indicates that the remote T1 SRM is in red alarm Check the remote T1 SRM port cable the Line Build Ou...

Страница 38: ... ports are in the forwarding state and some WAN bridge ports are in the non forwarding state Off All WAN bridge ports are in the forwarding state TST Test On Indicates that the SYNC port is in test mode Off Indicates that the SYNC port is in non test mode LNK Link On Indicates a clock is being received from the DCE Off Indicates no clock from the DCE CTS Clear to Send On Indicates that the DCE is ...

Страница 39: ...dicates that the DCE is ready to operate or that the Force DSR True field refer to the WAN Physical Configuration screen is set to YES on Off A valid DSR is not being received from the DCE Check the cabling or check if the DCE is powered up DTR Data Terminal Ready On ETWMIM is operational and ready to generate or receive control signals such as RTS or CTS Off ETWMIM is not operational ...

Страница 40: ...hed in the Community Names Table designate which Network Management Workstations receive traps from the device configure the optional T1 SRM WAN interface navigate through the Management Information Base MIB and manage the objects within it from a remote location Given the appropriate security level you can access the MIB from the ETWMIM through SNMP Tools 5 1 TERMINAL CONFIGURATION The Local Mana...

Страница 41: ...rd for super user access is a carriage return CR Note Your password is one of the community names specified in the Community Name Table Access to certain Local Management capabilities depends on the degree of access accorded to that community name See Section 5 3 ETWMIM LOCAL MANAGEMENT Cabletron ETWMIM Revision 00 00 00 CABLETRON Systems Incorporated 35 Industrial Way P O Box 5005 Rochester NH 03...

Страница 42: ...The Community Name Table Option lets you set community names Community names serve two purposes they act as passwords to Local Management and as agents of security control to your ETWMIM You control ETWMIM access by establishing up to four different levels of security authorization BASIC READ READ ONLY READ WRITE and SUPER USER If you have super user access you can change the existing passwords by...

Страница 43: ...en Fields The following briefly explains each field on the Community Name Table screen Community Name Displays the user defined name through which a user can access Local Management for the ETWMIM Any community name assigned here acts as a password to Local Management Community Name ETWMIM LOCAL MANAGEMENT Cabletron ETWMIM Revision 00 00 00 COMMUNITY NAME TABLE PASSWORD AUTHORIZATION SUPER USER NO...

Страница 44: ...y protected fields for super user SUPER USER This status provides read write access to the ETWMIM and allows changes to all modifiable parameters including community names IP addresses traps and SNMP objects 5 3 3 Editing the Community Name Table Screen The password that you use to access Local Management at the Password screen must have Super User access for Community Name Table edits to take eff...

Страница 45: ...TWMIM saves the community names to memory and implements their modes of access Please note that the first time you try to exit the screen without saving your changes Local Management displays a NOT SAVED message above the SAVE command If you proceed to exit without saving you lose all edits 6 Exit the screen by either pressing the appropriate Function key or by using the arrow keys to highlight RE...

Страница 46: ...oken Ring channel IP Address Displays the IP Address of the Ethernet and Token ring ports SubNET Mask Displays the SubNET Mask for the ETWMIM A subnet mask is a 32 bit quantity which masks out the network bits of the IP address This is done by setting the bits in the mask to 1 when the network treats the corresponding bits in the IP address as part of the network or subnetwork address or 0 if the ...

Страница 47: ... after the 9600 5 4 3 Setting the IP Address Table and Subnet Mask Field To set the IP Address Table and subnet mask fields 1 Using the arrow keys highlight one of the IP Address fields 2 Enter the IP address into this field The format for this entry is XXX XXX XXX XXX with values for XXX being from 0 to 254 Local Management does not accept non numerics or adjacent dots If the entry does not have ...

Страница 48: ...quest The Trap Table defines the management stations that will receive SNMP Traps for alarm event notification 5 5 1 ETWMIM Trap Table Screen To access the Trap Table screen from the Features Selection screen 1 Use the arrow keys to highlight the Component Trap Table option and press the Return key or press F8 The Trap Table screen Figure 5 5 appears Figure 5 5 Trap Table Screen ETWMIM LOCAL MANAG...

Страница 49: ...ress the Return key 3 Using the arrow keys highlight the Traps field and enter Y or y to send alarms from the ETWMIM to the workstation and N or n to prevent alarms from being sent 4 Press the Return key 5 Use the arrow keys to highlight the appropriate Trap IP Address field 6 Enter the IP Address of the workstation to send traps using this field The format for this entry is XXX XXX XXX XXX with t...

Страница 50: ...NMP Tools screen This screen allows you to access Management Information Bases MIBs and varies according to your level of security access The following descriptions outline the super user management capabilities From SNMP Tools you can review specifics about object identifiers OIDs edit configurable OIDs view OIDs sequentially from the originally requested OID 5 6 1 Accessing The SNMP Tools Screen...

Страница 51: ...und in a MIB The prefix 1 3 6 1 is the default You can modify this field to suit your needs GET Allows you to retrieve MIB objects one at a time using SNMP protocol SET Lets you edit modifiable MIB objects using SNMP protocol GETNEXT Displays the next OID in the MIB tree by getting the next SNMP OID from a remote agent ETWMIM LOCAL MANAGEMENT Cabletron ESXMIM Revision 0 00 00 SNMP TOOLS COMMUNITY ...

Страница 52: ...of GETNEXT requests to walk through and how much time elapses between each request REPEAT Repeats the Get command allowing you to monitor any changes to a specific OID 5 6 3 The Security Access Level Each MIB component that the ETWMIM supports e g RMON DLM etc has its own password for each possible level of access ranging from Basic Read Only to Super User Most MIB component Community Names defaul...

Страница 53: ...hannel A DownloadMIB 3 Press the Return key The Community Name changes 5 6 4 Getting And Setting OIDs To get an OID 1 Use the arrow keys to highlight GET or press the F6 function key 2 Press the Return key GET OID F9 appears 3 Enter an OID either by using the keyboard to enter the OID Shortcut Save yourself some keystrokes by typing the OID minus the OID s prepend i e given an OID prepend of 1 3 6...

Страница 54: ...an use the arrow keys to modify the recalled OID or if you have not previously entered the OID type the OID minus the OID s prepend To set an OID parentheses provide an example for you to follow 1 Highlight SET using the arrow keys 2 Press the Return key SET OID F9 appears 3 Enter an OID 1 3 6 1 2 1 1 4 0 4 Press the Return key If that OID does not exist the ETWMIM displays MIB_NO_INSTANCE Otherwi...

Страница 55: ...bject identifiers at one time allows you to quickly scan a MIB for the information that you need The SNMP Tools screen provides several scroll options WALK scrolls through OIDs sequentially from the initial OID CYCLE allows you to specify how many GETNEXT commands to cycle through for one OID STEP pages through the MIB one OID at a time To walk through the MIB 1 Highlight WALK using the arrow keys...

Страница 56: ... delay that you want between GETNEXT requests after ENTER CYCLE DELAY secs 6 Press the Return key 7 GETNEXT OID F9 appears 8 Enter the OID 9 Press the Return key To step through 1 Highlight GETNEXT using the arrow keys 2 Enter the OID only the suffix is necessary 3 Press Return The initial OID details including its size data type and data value appear 4 Highlight STEP using the arrow keys Press th...

Страница 57: ...figuration screen only after you install the optional T1 SRM module Figure 5 7 WAN Physical Configuration Screen 5 7 2 WAN Physical Configuration Screen Fields Active WAN Port Displays the active WAN port In future ETWMIM releases this field will provide port redundancy information ETWMIM LOCAL MANAGEMENT Cabletron ETWMIM Revision 00 00 00 WAN PHYSICAL CONFIGURATION RETURN F6 SAVE Active WAN Port ...

Страница 58: ...e ETWMIM can either use or ignore the CTS signal You can toggle the selections between YES and NO The YES On setting indicates that the ETWMIM ignores the CTS signal from an external DCE Data Communications Equipment The NO Off setting indicates that the CTS signal is received from an external DCE The default setting is NO Force DSR True Displays the source of the Data Set Ready DSR signal You can...

Страница 59: ...8ZS T1 Frame Type Displays the T1 Frame type You set the T1 Frame Type by changing the hardware configuration switch Refer to Chapter 3 2 Setting the Configuration Switches The available T1 Frame Types are ESF and D4 The default setting for this field is ESF T1 Xmit Clk Src Displays the T1 Transmit Clock Source You set the T1 Xmit Clk Src by changing the hardware configuration switch Refer to Chap...

Страница 60: ...toggle the selections 3 When the desired selection appears use the arrow keys to highlight the SAVE command 4 Press the Return key or press F6 The message SAVE DONE appears and Local Management saves the changes to memory 5 7 6 Setting the T1 Timeslot Configuration Table The T1 Timeslot Configuration Table allows you to configure how your ETWMIM utilizes the T1 line The configuration table consist...

Страница 61: ...remaining 8 to communicate with ETWMIM 3 This configuration can vary tremendously depending on how the Telco carrier maps out the T1 Timeslots Your service provider will tell you which Timeslots are active Figure 5 9 Sample Configuration Telco Cloud ETWMIM 1 ETWMIM 2 ETWMIM 3 24 Channels 16 Channels 8 Channels ETWMIM 2 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 00 00 00 00 00 00 00 00 01 08 0...

Страница 62: ...ield displays New and the cursor automatically moves into the Timeslot Configuration table 4 Use the arrow keys to move to the desired Timeslots in the Timeslot Configuration table 5 Type the desired Interface Number 04 to 28 or zero 00 for unused Timeslots Note The ETWMIM automatically assigns Interface 01 for Ethernet Interface 02 for Token Ring and Interface 03 for the SYNC port 6 Press the Ret...

Страница 63: ...ration screen shown in Figure 5 10 appears Figure 5 10 WAN Interface Configuration Screen ETWMIM LOCAL MANAGEMENT Cabletron ETWMIM Revision 00 00 00 WAN INTERFACE CONFIGURATION RETURN F6 SAVE Interface Number 003 Data Compression No Max Xmit Unit 0 Line Coding NONE Active Protocol NONE Active Protocol FR FR LMI Type NO LMI FR DLCI Address 0 FR Circuit State ACTIVE Frame Relay Fields PT IF DLCI STA...

Страница 64: ...rts a maximum packet size of 4095 This field displays 0 when Frame Relay is not used When you save the interface configuration the ETWMIM Local Management automatically assigns 4095 as the Max Xmit Unit Line Coding Displays the T1 Line Coding If you set T 1 Line Coding to B8ZS at the WAN Physical Configuration screen the options are INV HDLC JBZS or NONE If you set T 1 Line Coding to AMI at the WA...

Страница 65: ...n all 30 WAN bridge ports to one interface In this example the remaining 23 interfaces would not have WAN bridge ports available The quantity of bridge ports for a Frame Relay network is determined by the quantity of DLCIs Data Link Connection Identifiers assigned to that Interface This is determined either manually or by the T1 617 D LMI Local Management Interface IF Displays the Interface that i...

Страница 66: ...face Number to a Bridge Port you must first assign the Interface Number to a Timeslot Refer to section 5 7 6 Setting the T1 Timeslot Configuration Table 3 Use the arrow keys to highlight the Active Protocol field 4 Press the Return key to select PPP or NONE Select PPP to assign a Bridge Port Select NONE to remove a previously assigned Bridge Port 5 Use the arrow keys to highlight the SAVE command ...

Страница 67: ...light the Active Protocol field 4 Press the Return key to select FR or NONE Select FR to assign a Bridge Port Select NONE to remove a previously assigned Bridge Port 5 If you selected FR the FR LMI Type field appears 6 Use the arrow keys to highlight the FR LMI Type field 7 Press the Return key to select T1 617 D or NO LMI 8 If you selected T1 617 D a Use the arrow keys to highlight the SAVE comma...

Страница 68: ...ALID f Use the arrow keys to highlight the SAVE command g Press the Return key or press F6 The message SAVE DONE appears and the changes are saved to memory 5 8 4 Setting the Data Compression Field To set the Data Compression field Note This feature is not implemented It will be functional in future releases of the ETWMIM 1 Use the arrow keys to highlight the Data Compression field 2 Press the Ret...

Страница 69: ...E appears The ETWMIM Local Management automatically assigns an Active Port Number to the Interface number and the changes are saved to memory 5 8 6 Setting the Line Coding Field To set the Line Coding field 1 Use the arrow keys to highlight the Line Coding field 2 Enter the desired setting 3 Use the arrow keys to highlight the SAVE command 4 Press the Return key or press F6 The message SAVE DONE a...

Страница 70: ...Figure 5 11 will be functional for future releases of the ETWMIM Figure 5 11 ETWMIM CLI Information Screen ETWMIM LOCAL MANAGEMENT Cabletron ETWMIM Revision 0 00 00 CLI INFORMATION COMMUNITY NAMES IP TABLE TRAP TABLE SNMP TOOLS RETURN F7 F8 F9 F10 THIS SCREEN RESERVED FOR THE CABLETRON COMMAND LINE INTERFACE ...

Страница 71: ...es that 10BASE T devices transmit over a 100meter 328 foot link using 22 24 AWG unshielded twisted pair wire However cable quality largely determines maximum link length If you use high quality low attenuation cable you can achieve link lengths of up to 200 meters Cable delay limits maximum link length to 200 meters regardless of the cable type Insertion Loss The maximum insertion loss allowed for...

Страница 72: ... coupling between the different cable pairs contained within a multi pair cable bundle 10BASE T transceivers are designed so that the user does not need to be concerned about cable crosstalk provided the cable meets all other requirements Noise Noise can be caused by either crosstalk or externally induced impulses Impulse noise may cause data errors if the impulses occur at very specific times dur...

Страница 73: ...ork propagation should be calculated and taken into consideration before fiber optic cable runs are incorporated in any network design Fiber optic budget is the combination of the optical loss due to the fiber optic cable in line splices and fiber optic connectors Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device Total propagation delay...

Страница 74: ...le length the fiber optic budget total loss of 10 0 dB or less between stations and total network propagation delay should be calculated and considered before fiber optic cable runs are incorporated in any network design Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device Total propagation delay allowed for the entire network is 25 6 µsec...

Страница 75: ...ment Connectors A maximum of 29 tee connectors may be used throughout the length of cable segment for host connections If an excessive number of barrel connectors are used within the cable segment such as finished wall plates with BNC feed throughs then a reduced number of host connections may be required For special network design contact Cabletron Systems Technical Support Grounding For safety g...

Страница 76: ...ble must meet the following requirements AUI Cable The AUI cable connecting the module to a device must be IEEE 802 3 type cable Length The AUI Cable must not exceed 50 meters in length If 28 AWG thin office drop AUI cable is used then the maximum cable length is limited to 50 feet 15 24 meters Grounding The connector shell of the EPIM A and the EPIM X are connected to ground ...

Страница 77: ...Transceiver Type 8 Pin RJ 45 Jack A slide switch on the EPIM T determines the cross over status of the cable pairs The switch residing on the X side indicates the pairs internally cross over If the switch resides on the side the pairs do not internally cross over See Fig A 1 Figure A 1 Crossover Switch on the EPIM T Position not crossed over 1 TX 2 TX 3 RX 4 NC 5 NC 6 RX 7 NC 8 NC Position X cross...

Страница 78: ...s after optical overshoot You must use a Peak Power Meter to correctly compare the above values to those you measure on any particular port If you measure Power Levels with an Average Power Meter you must subtract 3 dBm from the measurement to correctly compare measured values to the above values e g 29 5 dBm peak 32 5 dBm average Parameter Typical Receive Sensitivity 29 5 dBm Max Receive Power 8 ...

Страница 79: ...o calculate increased or decreased power output for your operating environment For example typical power output at 25C equals 16 4 dBm For a 4C temperature increase multiply the typical coefficient 0 15 dBm by four and add the result to typical output power 4 x 0 15 dBm 16 4 dBm 17 0 dBm Parameter Typical Minimum Maximum Transmitter Peak Wave Length 1300 nm 1270 nm 1330 nm Spectral Width 60 nm 100...

Страница 80: ... the above values to those you measure on any particular port If you measure Power Levels with an Average Power Meter you must subtract 3 dBm from the measurement to correctly compare those measured values to the values listed above e g 29 5 dBm peak 32 5 dBm average Parameter Typical TX Power 15 1 dBm TX Budget 14 4 dBm RX Sensitivity 29 5 dBm MAX Receive Power 6 99 dBm Bit Error Rate Better than...

Страница 81: ... you can internally terminate the port on the module via a built in 50 ohm terminator This eliminates the need to connect the port to a tee connector and terminator Grounding For safety connect only one end of a thin net segment to earth ground Do not connect the BNC port of an EPIM C to earth ground Warning Connecting a thin net segment to earth ground at more than one point could produce dangero...

Страница 82: ...ecting Ethernet segments to the unit vary depending on the media type and ports you connect Refer to the following list and perform the procedure described in the subsections that apply EPIM A A 3 1 EPIM T A 3 2 EPIM F1 F2 F3 A 3 3 EPIM C A 3 4 EPIM X A 3 5 Pin 1 Logic Ref Pin 9 Collision 2 Collision 10 Transmit 3 Transmit 11 Logic Ref 4 Logic Ref 12 Receive 5 Receive 13 Power 12 Vdc 6 Power Retur...

Страница 83: ... To connect an EPIM A to an external network segment 1 Attach an external transceiver to the network segment that will be connected to the AUI port Refer to the applicable transceiver manual 2 Attach an AUI cable no longer than 50 meters in length to the transceiver connected to the network in step 1 3 Connect the AUI cable to the AUI port located on the EPIM A See Figure A 6 4 Lock the AUI connec...

Страница 84: ... contact Cabletron Systems Technical Support A 3 2 Connecting an Unshielded Twisted Pair Segment to an EPIM T Before connecting a segment to the EPIM T check each end of the segment to determine if the wires have been crossed over for the proper connection If the wires do not cross over use the switch on the EPIM T to internally cross over the RJ45 port Refer to Figure A 7 to properly set the EPIM...

Страница 85: ...ns outlined in Twisted Pair Network Requirements e Check that the crossover switch is in the correct position If a link still has not been established contact Cabletron Systems Technical Support A 3 3 Connecting a Fiber Optic Link Segment to an EPIM F1 EPIM F2 or EPIM F3 When connecting a fiber optic link segment to an EPIM F1 F2 or F3 keep the following in mind If you are connecting a fiber optic...

Страница 86: ...l the fiber optic cable to indicate which fiber is Receive and which is Transmit When you buy fiber optic cable from Cabletron Systems it is labeled so that at one end of the cable one fiber is labeled 1 and the other fiber is labeled 2 This pattern is repeated at the other end of the cable If you did not purchase your cable from Cabletron Systems be sure you label your cable as described above Ca...

Страница 87: ...c cable attach the fiber labeled 1 to the transmit port of the device 5 Attach the fiber labeled 2 to the receive port 6 Check that the EPIM s LNK LED is on If the LED is not on perform the following steps until it is a Check that the power is turned on for the device at the other end of the link SMA 905 Connectors SMA 906 Connectors w Half Alignment Sleeves F1 ST Connectors F2 ST Connectors F3 ...

Страница 88: ...n net segment to an EPIM C 1 Set the Internal Termination Switch located to the right of the port and labeled TERM to The on position if the thin net segment connected directly to the port will be internally terminated at the port The off position o if the thin net segment will not be terminated at the port or externally terminated 2 If the Internal Termination switch is in the On position connect...

Страница 89: ...in coax segment or a terminator to the other female connector on the tee connector Figure A 9 The EPIM C Attach thin net segment directly to BNC connector when internal termination switch is set to ON When internal termination switch is set to OFF Connect BNC tee connector to port Attach a terminator or terminated thin net segment to one female connector of tee connector Connect a terminated thin ...

Страница 90: ... X to a device not requiring SQE 1 Check that the SQE LED on the EPIM X is off If the SQE LED is on check the position of the SQE switch Note If the SQE light remains on even though the SQE switch is in the OFF position contact Cabletron Technical Support 2 Attach one end of an AUI cable no longer than 50 meters in length to the port located on the EPIM X Figure A 10 and the other end to the inten...

Страница 91: ...ge file using various remote management packages such as Cabletron s Remote LANVIEW Windows Refer to specific package documentation for image file download procedures The ETWMIM supports the following Download applications Standard Local Download the ETWMIM automatically disables management while you download the new firmware image Remote Runtime Download the ETWMIM continues to operate without in...

Страница 92: ... file onto your network rarp server Note For information on how to setup a workstation as a rarp server refer to your specific workstation documentation and the guidelines outlined in this instruction guide decompress the image file Note For your convenience Cabletron includes the PKUNZIP utility for easy decompression of the zipped file If you are using a UNIX workstation as a rarp server and you...

Страница 93: ...s Administrator Before you start Editing ethers or hosts files requires Root Superuser access Downloading an image file requires setting up your UNIX workstation as a rarp server To set up a UNIX workstation 1 Edit the etc ethers file by adding the ETWMIM Ethernet address followed by a unique name e g 00 00 1d 12 12 ce ETW Note Colons replace dashes in the ethernet address 2 Edit the etc hosts fil...

Страница 94: ...ory is not owned e g unix chown nobody tftpboot 6 Store the hex image file in the tftpboot directory as etw hex Note This step requires decompression of the zipped image file If you do not have a UNIX unzip utility access to a PC with pkunzip or a way to FTP the decompressed image to your UNIX workstation contact Cabletron Technical Support 7 Edit the etc inetd conf file by removing anything prior...

Страница 95: ...is 1 3 6 1 4 1 52 4 1 5 8 1 When performing the steps in Table B 1 keep the following in mind You must follow the steps in order Enter the IP address of the rarp server in standard dotted decimal notation e g 132 177 118 24 Enter the FULL path to the image file in the ctDLTFTPRequest OID including the name of the image file e g c tftpboot etw hex Table B 1 Standard Download Procedure Step OID Name...

Страница 96: ...at the time of the planned Download Table B 2 provides a step by step procedure for downloading the firmware image file This section provides specific MIB OIDs their names and the required setting for proper image file download Refer to your specific MIB walking tool documentation for instructions on how to set MIB OID strings The Download OIDs for Cabletron products reside in Cabletron enterprise...

Страница 97: ... download 4 ctDLOperStatus This OID monitors the progress of the Runtime Download 1 3 6 4 1 52 4 1 5 8 1 17 0 Integer 2 Indicates that a TFTP download request has been received but has not yet been activated 3 Indicates normal opera tion The download started and finished normally and no reset was specified or a download has not been started 4 Indicates that a down load is in progress 5 Indicates t...

Страница 98: ... it is repaired 4 The CSU DSU has been designed to prevent harm to the T1 network If the telephone company finds that the equipment is exceeding tolerable parameters the telephone company can temporarily disconnect service although they will attempt to give advance notice if possible 5 Under the FCC Rules no customer is authorized to repair this equipment This restriction applies regardless of whe...

Страница 99: ... requiring service to report the need for service to our Company or to one of our authorized agents Service can be obtained at Cabletron Systems Technical Support Address Cabletron Systems Inc 35 Industrial Way Rochester NH 03867 Phone Monday through Friday between 8 A M and 8 P M EST at 603 332 9400 CompuServe GO CTRON from any prompt Internet mail support ctron com ...

Страница 100: ...complies with Part 68 of the Commission s rules except for the encoded analog content and billing protection specifications With respect to encoded analog content and billing protection I attest that all operations associated with the establishment maintenance and adjustment of the digital CPE with respect to encoded analog content and encoded billing information continuously complies with Part 68...

Страница 101: ...ing training materials and instructions provided by the manufacturer grantee of the equipment used to encode analog signals or c An independent training course e g trade school or technical institution recognized by the manufacturer grantee of the equipment used to encode analog signals or d In lieu of the proceeding training requirements the operator s maintainer s is are under the control of a s...

Страница 102: ... A 3 EPIM F3 A 4 EPIM T A 1 EPIM X A 6 Connecting to the Network EPIM A A 13 EPIM C A 18 EPIM F1 A 15 EPIM F2 A 15 EPIM F3 A 15 EPIM T A 14 EPIM X A 20 Connector Specifications EPIM A A 12 EPIM C A 11 EPIM F1 A 8 EPIM F2 A 8 EPIM F3 A 9 EPIM T A 7 EPIM X A 12 Installing 3 5 Ethernet Connectivity 1 3 F Firmware Download Runtime Download 1 3 B 6 Standard Download 1 3 B 5 H Hot Swapping 1 3 I Interfa...

Страница 103: ...5 24 WAN Physical Configuration screen 5 18 M MAC Address 5 8 MIB 5 11 5 12 5 13 5 14 5 15 5 16 5 17 MIB Support 1 4 MMAC Configuration 3 4 3 5 Flexible Network Bus 2 1 Non shunting 2 1 Shunting 2 1 2 2 O Operating Specifications 2 5 P Physical Specifications Dimensions 2 6 Weight 2 6 Protocols Frame Relay 5 25 5 26 5 28 PPP 5 25 5 26 5 27 Supported by ETWMIM 1 5 S Safety Requirements 2 6 Spanning...

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