> > Any thoughts on that? It's the only thing that differs between the > two > > switches. > > > > This makes me think possibility of duplex mismatch between bce(4) > and link partner. You should not use forced media configuration on > 1000baseT link. If you used manual media configuration on bce(4) > and link partner used auto-negotiation, resolved duplex would be > half-duplex. It's standard behavior and Duplex mismatch can cause > strange problems. > I would check whether link partner also agrees on the resolved > speed/duplex of bce(4).
Forced link speed at 1000Mbps is not supported by the IEEE specification, you MUST use auto-negotiation at 1000Mbps (though you can advertise support for 1000Mb only to simulate forced operation). Duplex mismatch usually manifests with collision/deferred transmission errors on the link partner configured for half-duplex. The bce(4) driver does support those statistics. Dave _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
