How to map RMAC to Real MAC Address in end station

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Jan 25th, 2009
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How to map RMAC to Real MAC Address in end station


CIP-Slot1#llc badns

pcep=0085 rmac=0068.e83a.219f lmac=4000.7206.1111 rsap=04 lsap=04 this=81F609D8

rif=0810.1F91.BB81.3E80.0000.0000.0000.0000.0000 ack-len=0000


This Command running on cisco 7200

End station is IBM mainframe

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Giuseppe Larosa Sun, 01/25/2009 - 23:54
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Hello Worapun,

when going through a SR/TLB (Source Route Translational) Bridge between an ethernet segment and a token ring segment the order of bits inside each octet is reversed.


If this is the case the OUI

0068e8 that doesn't have a match in OUI page has to be read


00 = 00

68 = 01101000 rollover = 16

e8 = 11101000 rollover = 17


or it can be the result of an administrative settings


see


http://www.cisco.com/en/US/docs/ios/bridging/configuration/guide/br_remote_srb_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1002863


you can find information about conversion between llc2 TR and ethernet frames.


Hope to help

Giuseppe


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