Low speed on 82574L at 100M Full duplex, hanging on 82579LM

Ethernet Products

Determine ramifications of Intel® Ethernet products and technologies

Low speed on 82574L at 100M Full duplex, hanging on 82579LM

1,461 Views

Hello all,

I've found a strange behavior of NICs on our server.

Some intro:

Server board: supermicro x9scl-f, OS: Windows Server 2012

NIC1=82574l - for LAN connections

NIC2=82579lm - for WAN connection (PPPoE)

Situation1. NIC1 and NIC2 set link speed to auto negotiation. Speed sets to 100M Full Duplex (its ok), but when copying large files from/to server (through NIC1), NIC2 hangs (can't access the gateway). Only system reboot helps.

Situation2. NIC1 and NIC2 set link speed to 100M Full Duplex. NIC2 works ok, NIC1 - file copying speed is very low (peeks at 10Mbit, sometimes simply freezes).

Drivers are up to date.

Any ideas?

Link Copied

0 Replies

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.