On Sat, 2010-09-18 at 21:08 -0400, Genes MailLists wrote: > > Anyone got any suggestions for this. > > I have a linksys sr2024 Gb switch > > Several things are plugged into this - all using cat 5e or cat 6 cables. > > > Some things are connecting with full Gb speed but the main firewall wont. > > The machine has 3 intel nic's - > > lspci | egrep -i ethernet > 04:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet > Controller (rev 01) > 05:04.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet > Controller (rev 05) > 05:05.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet > Controller (rev 05) > > The 82573 is on board and not used - the other 2 nic's are used - one > for internal subnet and one for external. > > The internet side is connected to a cisco 800 router (which I believe > is 10/100 only .. tho I cudnt swear for sure) > > The inside is connected to the SR2024 Gb switch. > > Both nic's come up in 100 Mb/s - I rebooted the switch, and I plugged > and unplugged the cables, I tried ethtool -r ethx a few times to no avail. > > Other machines on same switch are happily running at full gigabit speeds. > > Nothing in logs suggests a problem > > Is there a problem with multi nics of same brand where they need to run > at diff speeds ? Or is this a quirk with some hardware somewhere ? Or ??? > > Unlikely. We use Intel NIC's (both 1GbE and 10GbE) extensively (up to 16 linkes per machine) for link monitoring without issues. > Appreciate any suggesions ... its getting tiring forcing renogiation! Try connecting the two links to each other. Set their respective IP's to 1.1.1.1/255.255.255.0 (eth1) and 2.2.2.2/255.255.255.0 (eth2). Now, check that they both auto negotiate to 1GbE/Full duplex. If they don't, you have a wire issue. (Is it CAT 5 or above?) If they do, do the following: 1. Install iptraf. ($ yum install iptraf -y) 2. Launch iptrag and configure it to work in promiscuous mode (Configure -> Force promiscuous mode). 3. Go back, select the "general interface statistics". 4. From another console, start flood pinging. ping -s 1400 -f -i eth2 -b 1.1.1.255 5. Return to the iptraf console, you should the see the packet increase linearly on both interfaces. If it doesn't, something is broken, if it does - you have a switch problem. - Gilboa -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
