I'm trying to communicate two servers (HP DLProliant 380 G5) via a crossover cable, but I don't get them to ping each other.
I am working in RHEL 4.
These are the steps I've performed:
1) Plugged the crossover cables in eth2.
(note: The cable is brand new. Also I built one myself and the behaviour is the same.)
2) I have configured the interfaces in both servers as follows:
Server1:
Server2:
3) I restart the interfaces in both servers: ifdown eth2 / ifup eth2
See green LED on both sides (not blinking but fixed)
4) ifconfig output:
Server1:
Server2:
5)The routes are taken into account:
In both servers:
6) I try to ping from one to the other but not success at all:
Server1 to Server2:
Running at same time a tcpdump (in Server1), don't see any traffic over eth2:
7) Check the arp but the entry is incompleted (not catch of MAC)
8) And here is where the issue must be.
I found that ethtool and mii-tool don't agree in the link status. First one indicates it as dow, while mii indicates up.
And here is the output for ethtool and mii-tool:
I think I should believe ethtool, but I see the LED lights green, the cables is properlly plugged (tried with two different ones).
Any idea why interefaces are down and can't communicate?
Last:
Here are the drivers:
Thanks
Last edited by pludi; 05-07-2010 at 03:42 AM..
Reason: code tags, please...
This:
...is odd. On my systems I have
It really doesn't believe the cable's plugged in. The LED's might just be hardwired. mii-tool talks with the transceiver itself, so it's the one I'd trust... Very strange that it autonegotiated a 100baseT link with a 1000baseT peer.
Have you tried a normal cable, not a crossover cable? I've sometimes experienced odd behavior with ports capable of autodetecting the cable type. You might also try forcing the speed and duplex, gigabit links often have problems negotiating -- though if you've discovered a gigabit interface that's incapable of negotiating with itself that's certainly something new!
I see you have other network adapters in your systems. Are they in use?
I wondered too. I assumed it's a two-port nic and wondered why eth2 and not eth0 or eth1. Besides I looked at the support pages @ hp.com, namely the driver download section and I found the driver the OP has mentioned (e1000), but there is a e1000e too. I don't know what's the difference between them. There are even at least two non-intel drivers (Broadcom, QLogic)
This User Gave Thanks to pseudocoder For This Post:
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