[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [FW1] SUN Ultra 10
Greetings! "Bartfai, Attila" wrote: > One of our customer using Sun Ultra 10 with 1 quad (4*10/100) card. > They want to enhance their box with another quad card, but the SUN not > recommend this. They recommend to upgrade the SUN U 10 to Ultra E 250... The reason for this is that the U10 only has one single PCI bus (IIRC). PCI is good for a maximum throughput of ~1Gbit/s (33Mhz * 32 bit width). For each full duplex network interface you have a maximum throughput of 200Mbit/s (100in + 100out = 200 to the PCI bus). With the builtin card plus a quad card you have 5 network interfaces which will have a max. throughput of 200 + 4* 200 = 1000 Mbit/s (if you use them all in 100Mbit/s fullduplex) = PCI bus limit. Because of this Sun recommends their bigger irons with two or more separate PCI busses: * E250 with 2x 33Mhz PCI (not sure - maybe like the E220R/E420R's, too) * E220R / E420R with 1x 33Mhz PCI plus 1x 66Mhz PCI * E450 with 6x PCI But if you intend to use only/mainly "low speed" (10Mbit/s) connections via the network interfaces, I do not see a major problem using more than QFE in an Ultra-10. But make the customer aware of this bus / speed limitation for updates - and be sure to mark it highly visible within the documentation. Customers tend to change their minds ("That's not what we wanted!") - and techs (like me) tend to forget what was not written down... ;-) Bye Volker -- Volker Tanger <[email protected]> -------------------------------------------- Sr. Security Engineer Tel. +49-69-92901-570 -------------------------------------------- Global One Global Security Global Service Engineering ================================================================================ To unsubscribe from this mailing list, please see the instructions at http://www.checkpoint.com/services/mailing.html ================================================================================
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