OS: RouterOS 5.0rc10 -> using as pppoe server
Mobo: EVGA P55 Classified 200
Processor: i7 870 (quad core)
Ram: Kingston value ram 1333mhz - 2gb
Hdd: 320GB Samsung
Ethernet: Micronet sp2612e (4 of them)
Psu: thermalteke 450w

The motherboard has two on-board gbit using the Marvell 88E8057 chip-set.

there is a total of 6 Ethernet.

1 is used for Core and the other 5 is for for distribution.
the problem that i face is even though the OS finds all 6 nic and shows them, but 1 of the Ethernet doesn't work.

5 of the ports are connected to a 3750g switch and 1 port is connected to a 2900 switch (both cisco).

when i connect all the cables, all ports are shown as up at both the switch-end and at the server-end but there is no traffic in just 1 port. i have changed cables and ports but the situation is the same.

i reverted back to my old pppoe server and everything works.

is it a driver issue? or is it an OS issue? i tried with the stable version 4.16 but it is unable to detect my Marvel Ethernet. is there a limitation to how many Ethernet i can use? the motherboard itself has 7 pci-e ports.

we run about 2000 clients, traffic is heavy on almost all ports.

what could be the reason behind 1 port not getting any traffic at all? if i take the cable from that Ethernet and connect it to another, it works fine. any help would be greatly appreciated.

i have found that 3 sets of irq are being shared by 6 Ethernet
5, 10 and 11

could that be an issue? is there any way to set irq from mikrotik in case there is conflict?

Please generate and send supout.rif file to support@mikrotik.com.

http://wiki.mikrotik.com/wiki/Manual:Su ... utput_File

i have sent the mail

thank you

Just a thought...

Are all the cards in a bonding setup (LACP for example), and if so, are they linked at the same speed and duplex? Most switches won't route traffic down a wire if it's settings are slightly different to it's peers, and with 4 + 2 types of cards, a 5 link aggregate may have a link different to it's peers.

Jumbo frames may also have an impact. (IE: 4 without and 1 with would cause issues)

all the cards on the pci-e ports go to a 3750g -> all gbits with same port/frame/speed/duplex config

1 of the 2 that are on the motherboard (built in) go to the same 3750g like the other 4 and 1 of the on-board Ethernet go to a 2900 (100mbit) port.

the on-boards both work. the problem i have is with a pci-e card that's hooked to the 3750g. at first i thought it was the port, but it isn't. all ports are configured the same (same parameters).

i tired connecting the pci-e which causes the problem to the 2900 port but its the same.

we have a similar machine running with 6 Ethernet connected to the same ports as the new machine.