Robert, Well I will be honest I am not sure how to set the ethtool settings back to default. It seems the NIC doesn't like any commands I give it. I tried sudo ethtool -r eth0
to restart the negotiation and that did not help. On Thu, Feb 6, 2014 at 3:51 PM, Robert Hajime Lanning <lann...@lanning.cc>wrote: > First clear all of the ethtool settings back to their default. > > GigE to GigE autonegotiations work just fine. Even across vendors. > Auto-neg was designed into the protocol from the start. > > The 100Base-T and lower specs had N-Way autonegotiation tagged on after > the fact and so had quite a few compatibility issues. > > GigE also will fix cross-over situations on the fly. Though there is > still nothing it can do about split pairs in the cable. If the pairing is > kept correct it figures out which pair is what, on its own. > > So, make sure autoneg is on for both sides of the connection (this is > default for all devices I have ever used (Cisco,Juniper,HP,Dell,Intel...)) > > I might be, that with the previous switch, the server had to be hardcoded > to 100Mb Full-Duplex, because the switch was 100Mb and its N-Way neg failed. > > This was a big issue with Sun HME vs. Cisco. When we went GigE, and > remembered to clear all the hardcodings, everything worked fine. > > > On 02.06.2014 12:31, john boris wrote: > >> First thanks for the reply. >> Where the server sits the NOC had an upgrade and they went to all new >> gigabit switches. So when I try to do any transfers from this server >> (or from any of the VMs on the server) I get speeds that make a 56K >> modem look like lightspeed. The server is not overloaded as there is >> only one production VM on the system that is just doing a bunch of >> telnet (well sssh ) sessions. The load average on the VM never goes >> above 0.00. >> I asked our NOC folks and they said to make sure the NIC is set to >> full Duplex. So I started checking and saw the card was set to 100mb >> and half duplex. Thus started my journey. I have been on with HP for >> the past 1.5 hours while they step me through all the things I have >> tried. I was hoping there was someone out there that might have come >> across this already. >> > > -- > Mr. Flibble > King of the Potato People > http://www.linkedin.com/in/RobertLanning > > _______________________________________________ > Tech mailing list > Tech@lists.lopsa.org > https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech > This list provided by the League of Professional System Administrators > http://lopsa.org/ > -- John J. Boris, Sr. Online Services www.onlinesvc.com
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