jmc wrote: > --- Chuck (Doc) Beaudette [Wed, Jun 11, 2008 at 01:32:42PM -0700]: --- >> I have noted what appears to be a compatibility issue between the new >> Soekris and Cisco 2640 switch. I previously had a 4801 in my network >> connected to a Cisco 2640 for customers on a local Fiber network. The 4801 >> acted as the router between the fiber switch and our Cisco border router. >> Average 95th percentile traffic was about 15-20mb for customers on this >> network. Customers had good burst rates of 40mb and better. >> >> When I replaced the 4801 with a new 5501, the throughput between the Cisco >> 2640 and the Soekris router dropped to next to nothing. We tried several >> different configurations (Auto negotiate, fixed 100mb Full-Duplex, etc.), >> nothing seemed to make any difference. Finally, we put a Netgear switch >> between the Cisco 2640 and the Soekris 5501 which cleared the problem. The >> 2640 is an older swtich, so the next option is try an upgrade to a 2660 >> switch then see if we can connect the Soekris directly. >> >> Anyone know of similar issues with the 5501? > > i don't know of anything inherent in the ethernet port of the 5501, but > there was a time when the prevailing wisdom with older Cisco gear was > NOT to autonegotiate---even though the manuals might have stated > otherwise. > > this beared out to be true with some older (some might say ``legacy'') > Sun gear, but x86 mobos with flavor-of-the-month chipsets might have > worked fine. IME, anyway. > > what OS are you running on the 5501? dumb question, but did you also set > the 5501 to 100 FDX as well as the switch? > > this really smells of an autonegotiate problem or duplex mismatch > problem. was/does the collision counter racking up numbers?
I have also seen similar behavior with devices that do auto MDI<->MDIX setting with some devices. Unfortunately, I'm not sure if there is a way to control the MDI/MDIX function in software. Anybody, here know if there is a way to control that in software? _______________________________________________ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
