Problems getting 2 NICs to work.

[Kevin Kimmell]

Okay...

Yes, I have two full class c networks from 2 different ISPs. I am simply 
trying to assign one IP address from each ISP to the two NICs in these 
machines. When both NICs are acivated, they both show up in a cat of 
/proc/interrupts.

Another observation that I've made (I'm unsure if it even means anything):

When I "ifup eth1" the default route moves from the gateway of eth0 to 
the gateway of eth1 and then when I ifdown eth1 the default gateway 
ceases to exist.

Strange things...

Alexander Dalloz wrote:

>[ Sorry, the first reply got scrambled by mailman ]
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>Am Mo, den 17.05.2004 schrieb Kevin Kimmell um 16:01:
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>>I didn't realize I was "hijacking" a thread. I reviewed all of the 
>>threads that accumulated over the weekend and didn't see anything that
>>appeared to cover this topic. I did post this same message to a forum 
>>and have got little response so I thought posting to this somewhat 
>>active list might garner quicker help. I apologize for any rules that
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>I 
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>>broke.
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>Thread hijacking does not mean that you reask a question previously
>answered, but that your own posting appears to be part of an unrelated
>topic. So your mail header contains
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>References:  <40A8905E.2060800 at netscape.net>
><20040517103302.GB25728 at leitl.org>
><1084800183.4273.1.camel at tuc.rep51.net>
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>And yes, this is the proper "forum" for asking such questions regarding
>Fedora use.
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>>The patch level I'm using is .2188 on all machines.
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>Ok, good.
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>>Running the "ping -I eth1 yahoo.com" results in an unknow host error. 
>>All troubleshooting techniques that I would use for normal network 
>>problems seem to say that traffic isn't getting past the machine when
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>I 
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>>have the 2nd NIC running.
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>Please paste the ifcfg-eth[0,1] configuration files (they are in
>/etc/sysconfig/network-scripts/).
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>>The separate IPs are set up on two physically separate NICs so I am
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>not 
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>>using aliases. Since the 2 different class C's are running over the
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>same 
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>>switch plane I did initially try to use virtual/aliased IPs on the
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>main 
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>>eth interface but when I had problems decided to just enable the 2nd
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>NICs.
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>I am confused by you mentioning class C's. So you have 2 complete class
>C nets your own, meaning 12.168.88.0/24 and 204.117.218.0/24? That would
>means 2 times 256 IPs (508 usable). Or are you just speaking of 2 IPs,
>both each from a class C net? That would make a big difference.
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>>The newest machine that I set up is using patch level 2115 and I let 
>>Fedora do the networking setup via the graphical installation and I
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>gave 
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>>each ethernet interface an available IP on the two different networks 
>>but it still has this same problem. I'm reading that entire HOW-TO now
>>and hope to find something to help. If anyone has anything else for me
>>to try, I'd appreciate any pointers.
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>Do both NICs appear in "cat /proc/interrupts"? Does look the output of
>"ifconfig" proper? Can you ping the local IPs itself?
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>>Thanks,
>>Kevin
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>Alexander
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