Gigastack question

[Patrick McHenry]

Gigastack GBIC WS-X3500-XL.

Does anybody now anything about these antiquated interfaces. I was wondering if there is a way to make them full duplex? In lab, the most I can get from them is 1000 half.

Thanks, Pat.

[Shashank Singh]

Hi Patrick,

Full duplex can only be implemented if you have one gigastack GBIC per gig port, where each GBIC is connected to only one device (even if the GBIC itself has two ports).

The GigaStack GBIC will auto negotiate to either full-duplex or half-duplex. The software determines the mode of operation by the way the cables are connected and the number of switches in the stack. Note that although duplex can be forced, it is not supported. The only supported option for duplex is to leave it to auto-negotiate.

Point-to-point connections consist of one GigaStack GBIC per switch and only one connection exists between these modules. The additional available port on the Gigastack is not used and should not be connected to any other device. In this configuration, the GigaStack interface will automatically negotiate to full-duplex.

Detailed information is available at:

http://www.cisco.com/en/US/products/hw/switches/ps607/products_tech_note09186a00800a2cac.shtml

Cheers,

Shashank

P.S. Please rate helpful posts.

[Patrick McHenry]

Thanks, Shashank. It's working. I think I'm going to use them in production as we are short on cash and I can stretch the technology out a little. I tried to give you 5 stars but hit four and it doesn't appear to allow me to change it.

Pat.

[Shashank Singh]

Hi Patrick,

Thanks for the generous rating.. It is a five

Cheers,

Shashank