NFS mount from a particuliar interface ?
Frank Bonnet
I have a Lenny server with two ethernet interfaces which is NFS CLIENT
to a NETAPP filer
I wonder if it would be possible to force NFS traffic to/from the filer
on one ethernet interface and use the other interface for all other
traffics ?
like the following
eth0 <------OTHER TRAFFIC----> LAN
eth1 <------NFS ONLY --------> FILER NFS server
Thanks for any info
.
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Alexander Samad
> Hello
>
> I have a Lenny server with two ethernet interfaces which is NFS CLIENT to a
> NETAPP filer
>
> I wonder if it would be possible to force NFS traffic to/from the filer on
> one ethernet interface and use the other interface for all other traffics ?
>
> like the following
>
> eth0 <------OTHER TRAFFIC----> LAN
> eth1 <------NFS ONLY --------> FILER NFS server
>
use
ip route
so presume
server A
eth0 192.168.11.10/24 normal traffic
eth1 192.168.11.11/24 nfs traffic
nfs
eth0 192.168.11.14/24
so on server a
you could have something like
192.168.11.0 dev eth0 src 192.168.11.10
192.168.11.0 dev eth1 src 192.168.11.11
default via eth0 src 192.168.11.10
you could add
ip route add 192.168.11.14/32 dev eth1 src 192.168.11.11
which says for all access to 192.168.11.14 use dev eth1 with src 192.168.11.11
so that will help with outbound traffic - inbound (from nfs to server
a) is a different matter. You will find eth0 will arp reply for
192.168.11.11 which means nfs replies will go to eth0 as well as maybe
eth1.
you could setup a permenant arp entry for 192.168.11.11 on
192.168.11.14 but .....
The other option is put the nfs server in a different subnet (not a
different ethernet broadcast segment) - so same switch different ip
network, this would stop eth0 being used over eth1
Alex
>
> Thanks for any info
>
> .
>
>
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Ron Johnson
> Hello
>
> I have a Lenny server with two ethernet interfaces which is NFS CLIENT
> to a NETAPP filer
>
> I wonder if it would be possible to force NFS traffic to/from the filer
> on one ethernet interface and use the other interface for all other
> traffics ?
>
> like the following
>
> eth0 <------OTHER TRAFFIC----> LAN
> eth1 <------NFS ONLY --------> FILER NFS server
>
Since each interface has it's own IP address, the clientaddr mount
option might be what you want.
$ man 5 nfs
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Ron Johnson, Jr.
Jefferson LA USA
"If God had wanted man to play soccer, he wouldn't have given
us arms." Mike Ditka
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Alexander Samad
> On 2010-03-08 08:40, Frank Bonnet wrote:
>>
>> Hello
>>
>> I have a Lenny server with two ethernet interfaces which is NFS CLIENT to
>> a NETAPP filer
>>
>> I wonder if it would be possible to force NFS traffic to/from the filer on
>> one ethernet interface and use the other interface for all other traffics ?
>>
>> like the following
>>
>> eth0 <------OTHER TRAFFIC----> LAN
>> eth1 <------NFS ONLY --------> FILER NFS server
>>
>
> Since each interface has it's own IP address, the clientaddr mount option
> might be what you want.
>
> $ man 5 nfs
no that takes out all the fun :) completely forgot about that i was
thinking purely network, still doesn't solve the re packets coming
back on the other interface potentially
>
> --
> Ron Johnson, Jr.
> Jefferson LA USA
>
> "If God had wanted man to play soccer, he wouldn't have given
> us arms." Mike Ditka
>
>
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Ron Johnson
> On Wed, Mar 10, 2010 at 5:38 AM, Ron Johnson <ron.l....@cox.net> wrote:
>> On 2010-03-08 08:40, Frank Bonnet wrote:
>>> Hello
>>>
>>> I have a Lenny server with two ethernet interfaces which is NFS CLIENT to
>>> a NETAPP filer
>>>
>>> I wonder if it would be possible to force NFS traffic to/from the filer on
>>> one ethernet interface and use the other interface for all other traffics ?
>>>
>>> like the following
>>>
>>> eth0 <------OTHER TRAFFIC----> LAN
>>> eth1 <------NFS ONLY --------> FILER NFS server
>>>
>> Since each interface has it's own IP address, the clientaddr mount option
>> might be what you want.
>>
>> $ man 5 nfs
>
> no that takes out all the fun :) completely forgot about that i was
> thinking purely network, still doesn't solve the re packets coming
> back on the other interface potentially
Both interfaces are on the same switch?
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Ron Johnson, Jr.
Jefferson LA USA
"If God had wanted man to play soccer, he wouldn't have given
us arms." Mike Ditka
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Alexander Samad
> On 2010-03-09 16:16, Alexander Samad wrote:
>>
>> On Wed, Mar 10, 2010 at 5:38 AM, Ron Johnson <ron.l....@cox.net>
>> wrote:
>>>
>>> On 2010-03-08 08:40, Frank Bonnet wrote:
>>>> like the following
>>>>
>>>> eth0 <------OTHER TRAFFIC----> LAN
>>>> eth1 <------NFS ONLY --------> FILER NFS server
>>>>
>>> Since each interface has it's own IP address, the clientaddr mount option
>>> might be what you want.
>>>
>>> $ man 5 nfs
>>
>> no that takes out all the fun :) completely forgot about that i was
>> thinking purely network, still doesn't solve the re packets coming
>> back on the other interface potentially
>
> Both interfaces are on the same switch?
segment ), you can find that eth0 might arp reply for eth1.
http://kb.linuxvirtualserver.org/wiki/Using_arp_announce/arp_ignore_to_disable_ARP
key bit is the reply on any interface for any local addresses
Alex
>
> --
> Ron Johnson, Jr.
> Jefferson LA USA
>
> "If God had wanted man to play soccer, he wouldn't have given
> us arms." Mike Ditka
>
>
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