Gary Kjos
garykjos at gmail.com
Mon Mar 19 16:45:28 CDT 2012
On my gigabit switch I never see ONLY the gigabit light. I see 100 or BOTH and I am quite sure that when I looked at the documentation it said that was how the lights on the switch worked. GK On Mon, Mar 19, 2012 at 4:24 PM, jwcolby <jwcolby at colbyconsulting.com> wrote: > In troubleshooting further, I discovered that if I reboot the VM Server > (with the 100 mb light lit), as soon as post begins both the gigabit and > mbit lights on the switch light, IOW it is "both" from the git-go. > > I'm not sure what that means actually, other than it isn't a driver issue > since the drivers (or Windows even) haven't loaded yet. > > I also don't know what both lights lit actually means anyway. That is the > only machine that appears to do that. Perhaps the board is bad? I looked > through the BIOS for NIC related stuff but all I found was an on/off bios > switch for the NIC. The NIC is in the AMD chipset. > > I don't even have a gigabit NIC card. Motherboards just have them now so I > quit buying them ages ago. I may go get one just to see if that would cause > the 100 mbit light to go away. > > > John W. Colby > Colby Consulting > > Reality is what refuses to go away > when you do not believe in it > > On 3/19/2012 2:55 PM, jwcolby wrote: >> >> Good article. but what a PITA that brings up. >> >> I have my WIFI router / cable modem plugging into the gigabit switch *in >> the middle*. Does that >> router tell that entire middle switch to dumb down to 100 mbit? if so then >> there's my answer as to >> "why". What is left unanswered is how to get around this. I have lots of >> internet network traffic in >> the living area at the front of the house, and I also have internet access >> in my office upstairs. >> None of it is "optional", i.e. we need internet at both ends of the house >> for email at the very >> least. Web browsing as well. >> >> I just crawled under my table up in my office and what I discovered is >> that the switch under there >> has one line, going to my Virtual Machine Server which shows the gigabit >> light and the 100 megabit >> light lit. I unplugged and moved the cable and both lights followed the >> cable. I would guess that >> perhaps the 100 mbit is for a virtual machine. >> >> In my server I actually have two NICs and I can assign one of those NICS >> to support a virtual LAN >> just for the VMs. However even there those machines have to talk to the >> internet. >> >> What I discovered is that I have a 100 mbit switch down stairs behind the >> tv. It talks almost only >> to the UnRaid server in the basement. One would expect that each channel >> would adapt (flow control) >> but the article mentioned the transmitting NIC seems to be the object >> modified. What the article >> didn't say was whether the NIC stayed at the lower speed or whether it >> popped back up to the higher >> rate as soon as possible. >> >> My motherboard in the VM server only has a single NIC so if it is being >> throttled down and then just >> stays there until a reboot or something... >> >> So much to know, so little time. And in this case I do not even have the >> knowledge to troubleshoot >> it effectively. >> >> John W. Colby >> Colby Consulting >> >> Reality is what refuses to go away >> when you do not believe in it >> >> On 3/19/2012 12:54 PM, Michael Bahr wrote: >>> >>> John, for Gigbit to work properly I think **everything** must be Gigibit, >>> i.e. all network cards, wifi, routers, switches, etc. I think Gigibit >>> uses jumbo-frames. Otherwise you can have a mixed-mode condition. You do >>> not mention what kind of router/switch you have, >>> consumer/business/enterprize. Oh forget enterprize--too expensive. :-) >>> Some routers/switches may support mixed-mode. Read the link below. >>> >>> http://www.smallnetbuilder.com/content/view/30212/54/ >>> >>> Mike... >> >> > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com -- Gary Kjos garykjos at gmail.com