Nortel/Bay ATM woes...

[Nigel Taylor]

Hi All,            I was wondering if anyone in the group had any ATM experience using Bay 5000 and Centillion 1600 ATM switches. I'm trying to solve a problem with the LES/BUS and remote coop pairs within the ELANs.  When running a "show les" that various ELANs show LES/BUS as partially and fully Optimal.  In order to get a greater understanding of the whole picture I'm now trying to figure out what exactly does Fully/Partially Optimal mean. Currently all devices join the various ELANs(12) but within those twelve ELANs various LES/BUS pairs show up as fully and partially optimal.   Does anyone have an idea as to what I'm rambling about?   TIA   Nigel