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тАО01-08-2010 03:15 AM
тАО01-08-2010 03:15 AM
i v an issue with centos 5.4 64 bit installed on a AMD Athlon x4 620 6GB RAM.
it has a peculiar issue. i have 3 LAN cards in the system. at every boot only 1 of the 3 LAN cards get detected and the other two dont get loaded at all
the /etc/sysconfig/network-scripts/ifcfg-eth1 and /etc/sysconfig/network-scripts/ifcfg-eth2 files get renamed /etc/sysconfig/network-scripts/ifcfg-eth1.bak and /etc/sysconfig/network-scripts/ifcfg-eth2.bak
and the modules for the other two LAN cards dont get loaded at all.
lspci does show the other two adapters but i do not know how to find the modules of the other 2 cards.
is there any procedure to find the modules of the hardware installed in the system. in this case the entries of eth1 and eth2 are not present in the /etc/modules.conf file.
e.g the /etc/modules.conf file contains entries for
alias eth0 r8169
likewise how do I know which module is for eth1 and eth2?
thanks
Solved! Go to Solution.
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тАО01-08-2010 03:26 AM
тАО01-08-2010 03:26 AM
Re: network device modules dont get loaded
If the modules don't load automatically, that means hardware auto-detection is not working. In that case, it would be important to know the model of the NICs first.
Does "lspci" detect the missing NICs?
MK
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тАО01-08-2010 03:45 AM
тАО01-08-2010 03:45 AM
Re: network device modules dont get loaded
lspci does show the missing LAN cards.
infact when I rename the ifcfg-eth1.bak and ifcfg-eth2.bak files to ifcfg-eth1 and ifcfg-eth2 and restart the system it starts working again.
secondly, before the above restart (i.e after renaming the eth1.bak and eth2.bak) if I do a ifup eth1 it takes the static IPADDR i assign, and even pings from the next system! but i cannot do anything else. i cannot ssh into or from it or do anything!!
when i restart all three LAN cards start work.
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тАО01-08-2010 12:26 PM
тАО01-08-2010 12:26 PM
Re: network device modules dont get loaded
a bug there might lead you to a solution.
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тАО01-08-2010 05:17 PM
тАО01-08-2010 05:17 PM
Solutionservice kudzu stop
chkconfig kudzu off
If/when you change the hardware configuration (add/remove cards or something), you can then either restart Kudzu manually once (with "service kudzu start") and verify that it does the right thing, or make the necessary configuration changes manually.
MK
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тАО01-09-2010 11:02 AM
тАО01-09-2010 11:02 AM
Re: network device modules dont get loaded
i have now disabled kudzu and also tinkered a lot with the network config files. hopefully when i start the machine again tomorrow i will not face this issue. will let u know if things work fine
thanks again
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тАО01-11-2010 08:40 AM
тАО01-11-2010 08:40 AM
Re: network device modules dont get loaded
the ethernet which came with the board works fine and has its alias as eth0
the other two NICs are external and are visible in lspci
the hardware address changes to HWADDR=ff:ff:ff:ff:ff:bf
in the ifcfg-eth1 config file.
if i change it to the correct one i get an error saying
Bringing up interface eth1: Device eth1 has different MAC address than expected, ignoring.
[FAILED]
this is troubling me a lot and now i simply cannot enable it today.
what could be the issue?
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тАО01-13-2010 09:28 AM
тАО01-13-2010 09:28 AM
Re: network device modules dont get loaded
is there any way i can tell the system that LAN card with MAC id xxxx sud get only eth1 and one with yyyy sud get eth2 only?
or i think in my case its a question of the system properly detecting the NICs itself. i dont know. i m confused!