Hi Jesse, I am trying to feed the dual port nic with the optical signals coming from a network tap/passive splitter. I connect the two outputs of the tap to the two RX connectors, and leave the TX connectors unconnected. So, the first question is whether the NIC will detect link without connecting the TX 's. Since it does not (at least according to ethtool and the kernel logs), I assumed that the nic is expecting autoneg pulses and never comes up. This is why I wanted to disable autonegotiation. Moreover, the tap installation instructions suggest doing so.
Thanks, Fredi > > > On Tue, 6 Apr 2010, Federico Raspall Chaure wrote: > >> Hi, >> I have a dual-port fibre Ethernet nic (Dual port PF, 82571GB >> controller) >> which does not allow me to disable auto-negotiation (with ethttool -s >> ethx >> autoneg off.) >> >> Browsing the source code of the driver and the "interfacing" code to >> ethttool (e1000e.c, ethtool.c and 82571.c) it appears that autoneg is >> always enabled for fibre PHYs. Is there a way to disable autoneg in >> these >> cards? > > First, tell us what you're trying to do. There really is only one speed, > so not much to negotiate. What are you attaching to etc? > > Jesse > > > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > E1000-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/e1000-devel > To learn more about Intel® Ethernet, visit > http://communities.intel.com/community/wired > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
