Hi there, We have board with Intel 82571EB Ethernet controller, running RHELE4-U4. Sometime, the Ethernet port can only setup 100Mb-T full duplex connection with Gigabit hub (saw this problem on different Gigabit hub). The connection can be re-connected as 1000Mb-FD by forcing re-negotiation with "ethtool".
Here is the registers dump at 100Mb-T: - MAC registers: Device Control Register - CTRL(00000h) = 081c0241h Device Status Register - STATUS(00008h = 00080347h - PHY registers: Auto-Negotiation Advertisement Register - (04d) = 0x0de1 Auto-Negotiation Base Page Ability Register - (05d) = 0xc1e1 Auto-Negotiation Expansion Register - (06d) = 0x000f Auto-Negotiation Next Page Transmit Register - (07d) = 0x2801 Auto-Negotiation Next Page Ability Register - (08d) = 0x4a47 1000BASE-T/100BASE-T2 Control Register - (09d) = 0x0200 1000BASE-T/100BASE-T2 Status Register - (10d) = 0x0800 >From bit PHY9.9 and bit PHY10.11 (=1), we see both sides are 1000BAST- full duplex capable. But the receiver status for both sides somehow are wrong (bit PHY10.12 and bit PHY10.13 = 0). We're wondering what could cause this problem. Any help is appreciated, Thanks, Charley ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel
