AT-6870 & AT-6875 MAC Layer Bridge EEPROM
Contents
1. ODD B11 EVEN pgg B6 B7 B8 g H Las ke4 Lay BOeS BO aae bods D H E H i Huo Hug il q Hh p Hh op i o H q H fi Hh g Hh g i q H q g q Hh g Hh g g fe oa ine ole D H E H O g A g a g A p H i H o Hh p Hh p H q i q i q H q H I 1 q 0 q oO q p q p Channel A LEDs s Ke Z Transmit Receive Front Panel of Bridge Figure 1 Location and Orientation of the EPROMs on the AT 6870 6875 Logic Board Caution f E PROM pins are delicate U se care when handling these components to prevent pins from being bent or sheared 5 Using a chip extractor remove the two E PROMs from their sockets Caution TheEPROM marked ODD goes on the left and the EPROM marked A EVEN goes on the right Place E PROMs in the correct sockets and orient them correctly or damage may result 6 Referring to Figure 1 observe the orientation of the two E PROMS Insert the EPROM marked ODD in the socket on the left B11 on the Printed Circuit Board PCB silkscreen nsert the E PROM marked E VE N inthe socket on the right B 8 on the PCB silkscreen T he notched end of the E PROM ceramic cases go toward the back of the logic board When inserting the E PROMs in their sockets carefully line up the pins with the socket contacts and exert just enough insertion force to slide the pins into the contacts evenly and completely 7 Replace th2. ATE Allied Telesyn International EPROM Upgrade Kit for CentreCOM AT 6870 and AT 6875 Bridges User Manual PN 613 10406 00 Rev A 950922 Bridge EPROM Upgrade Kit Allied Telesyn AT 6870 6875 bridges come with management software loaded in two E rasable Programmable Read Only Memory E PROM devices The E PROMs provide transparent learning functionality as well as Simple Network Management Protocol SNMP Management I nformation Base MIB 1 parameters and supplemental MI B variables for bridges per the nternet Advisory Board I AB Bridge MIB Y ou can upgrade individual bridges by replacing the EPROMs in their sockets on the logic board This EPROM upgrade kit adds the I nternet Protocol I P inquiry capability BOOTP F or information about the operation of the bridge refer to the AT 6870 6875 CentrecOM MAC Layer Bridge nstallation and User Manual Installing the EPROM Upgrade Kit Caution As nstallation should be performed with precautions to prevent damage to static sensitive components 1 Make sure the power to the bridge is OFF 2 Remove the two screws on each side of the bridge that hold the top cover in place 3 Remove the top cover The cover fits tightly and it may be necessary to use a screwdriver to initially dislodge it 4 Orient the unit with the front towards you The power supply should be on the left and the port L E Ds should be on the right See F igure 1 O
3. e cover and secure it using the four screws Verification of Operation Before putting the bridge back in service you can make sure it is functional by running its power up diagnostic routines Plug the bridge in if the power cord is unplugged and turn the power ON Thegreen System P ower indicator and the red Diagnostics indicator come ON and the bridge tests the two network channels F irst the Transmit and Receive indicators for Channel B flash alternately for a few seconds then this is repeated for Channel A If the unit does not pass the Diagnostics indicator illuminates and stays ON steadily The Diagnostics indicator goes OF F when the bridge passes the diagnostic tests signaling that it is ready for use Network Management The SNMP agent enables the user to manage the system from any industry standard SNMP Network Management Console NMC running an SNMP management application that can handle MIB II A network management application which handles only MIB II would not be able to perform all the management functions of the AT 6870 6875 CentreCOM is a trademark of Allied Telesyn nternational Corp Copyright 1993 Allied Telesyn I nternational Corp All rights reserved No part of this publication may be reproduced without prior written permission from Allied Telesyn nternational Corp Allied Telesyn nternational Corp reserves the right to make changes in specifications and other information contained in this docume
4. nt without prior written notice The information provided herein is subject to change without notice n no event shall Allied Telesyn I nternational Corp be liable for any incidental special indirect or consequential damages whatsoever including but not limited tolost profits arising out of or related to this manual or the information contained herein even if Allied Telesyn I nternational Corp has been advised of known or should have known the possibility of such damages Allied Telesyn International Allied Telesyn 950 Kifer Road Sunnyvale CA 94086 USA Tel 800 424 4284 F ax 408 736 0100 Technical Support 800 428 4835 F ax 206 481 3790
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