There was a good thread on Cisco-nsp regarding this exact subject recently. My recollection is that both X6148 and X6148A have just 6 1GB ASICs. Therefore the over subscription rate is 8:1. The biggest difference between these LC's is that X6148A will support large MTU whereas X6148 will not.
-b On Thu, Sep 10, 2009 at 2:17 PM, Scott Spencer <sc...@dwc-computer.com>wrote: > Are the X6148A cards dedicated 1 gb/s uplink for each port ( shared 32 > Gb/s > bus , as long as each port is it's own 1 gb/s still to the 32gb/s bus and > not shared with 7 other ports, so effectively just 125Mb/s per port then if > all used at full/even capacity) ? > > I can't really find anything much on X6148A internal architecture online, > but it would seem that each port gets its own 1gb/s link to the > card/backplane, and that the bottleneck then is the 32gb/s backplane (which > is fine, as long as it's not 1 gb/s per each set of 8 ports!). > > > Best regards, > > Scott Spencer > Data Center Asset Recovery/Remarketing Manager > Duane Whitlow & Co. Inc. > Nationwide Toll Free: 800.977.7473. Direct: 972.865.1395 Fax: > 972.931.3340 > <mailto:sc...@dwc-computer.com> sc...@dwc-computer.com > <http://www.dwc-it.com/> www.dwc-it.com > Sales of new and used Cisco/Juniper/F5/Foundry/Brocade/Sun/IBM/Dell/Liebert > and more ~ > > -- Bill Blackford Network Engineer
