On 10/02/2014 01:24 PM, Geoffrey Leach issued this missive:
This is a new Fedora 19 install. The install correctly detected the ethernet port. ifconfig sees em1, and the configuration data is correct There is a device plugged into the port, which monitors its ethernet port. (The device is known to work otherwise) So, somehow I'm supposed to specify the topology of the connection. Any suggestions on how to go about debugging the connection? Thanks.
Debugging how? I'd say the first thing is to use "ethtool em1" on the Linux box to see if it sees a link and what configuration it's using. On my machine, I still use "eth0", so: [root@prophead ~]# ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: Yes Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Link partner advertised pause frame use: Symmetric Link partner advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on MDI-X: on Supports Wake-on: g Wake-on: g Current message level: 0x000000ff (255) drv probe link timer ifdown ifup rx_err tx_err Link detected: yes So you can see my NIC supports 10/100/1000baseT in both half and full duplex. The switch it's plugged into (the "Link partner") supports the same stuff and they both support auto negotiation. Between them they've negotiated a 1000baseT connection (1Gbps) in full duplex and eth0 has also determined that it is using twisted pair MDI-X (flipped) cabling (swapping the TX and RX pairs in the cable) and the very bottom shows eth0 has a link to the switch. That'd be step one. ---------------------------------------------------------------------- - Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx - - AIM/Skype: therps2 ICQ: 22643734 Yahoo: origrps2 - - - - Whoever said "Money can't buy friends" obviously never brought - - donuts to the office. - ---------------------------------------------------------------------- -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
