Gigabit Ethernet problems

[Jose Goyana_4]

I have configured my Gigabit interface with the following command:
ifconfig lan2 92.168.20.5 netmask 255.255.255.0 broadcast 92.168.20.255 up
But this is the output when I run ifconfig on that interface:
# ifconfig lan2
lan2: flags=1863
inet 92.168.20.5 netmask ffffff00 broadcast 92.168.20.255

Now, there is no communications over that interface. Any help?

Jose

[Jeff Machols]

can you at least ping that cards address?

[Craig Rants]

This line looks a little out of place.
flags=1863

Standard is
flags=843

Do you have anything weird in your /etc/rc.config.d/netconf file?

What does a netstat -in show you.

I have never seen the CKO before, I am trying to find some info on that.

More Later,
C

[Christopher McCray_1]

Do you possibly have another card, which is also configured (lan0?), that is on the same subnet? If so you need to either unconfigure lan? or set it up on another subnet. However, if your need is to have multiple lanics up simultaneously, might I suggest Auto Port Aggregation(APA) software. It will make your life much easier.

Hope this helps

Chris

[Roger Baptiste]

Hi,

Your ifconfig output look ok. The CKO will be there for ifconfig output of Giga cards (it''s there on my system too).eg on my working system:
#ifconfig lan2
lan2: flags=1843
inet 100.9.20.35 netmask ffffff00 broadcast 100.9.20.255
**

Two possible reasons for your problem could be the
- CABLE -> I have had issues with the Giga card cable once. Make sure the LEDS on the lan card are glowing green, as per the lan card manual specs.

-- Your routing configuration.
do netstat -nr and check whether it is going to the right subnet.

HTH
raj

[Craig Rants]

checksum-offload (CKO), it could be that your card does not support this option. You may want to talk to HP to see if this is supported for your card.

GL,
C

[Sanjay_6]

Hi Jose,

Try these links,

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=3ae3a589075a259b74/screen=ckiDisplayDocument?docId=200000042418194

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=3ae3a589075a259b74/screen=ckiDisplayDocument?docId=200000056236904

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=3ae3a589075a259b74/screen=ckiDisplayDocument?docId=200000048086778

Hope this helps.

Regds

[Sanjay_6]

Hi Jose,

Here is some more info on the configuration,

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=3ae3a589075a259b74/screen=ckiDisplayDocument?docId=200000051244108

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=3ae3a589075a259b74/screen=ckiDisplayDocument?docId=200000049915689

Hope this helps.

Regds

[Jose Goyana_4]

Although I have run landiag to reset the NIC, it didn't work out...
It does seem to be a compatibility problem between the NIC and the switch (3Com SuperStack 9300): we have switched power on the switch and now the NIC is working fine!
This behavior is very strange: it apears only when I ifconfig down the gigabit NIC and then try to ifconfig it up back again...

Thanks to everyone.

Jose