jose nuno neto pisze:
GoodMornings
Thanks for your input
Im looking for redundancy but a little extra:
I have already bonding
bond0 :- eth0 + eth1
bond1 :- eth2 + eth3
And I have a IP witch I can reach from the 2Lans
Its a ILOM IP that I use for PowerFencing on a cluster setup
Since I have the paths I thought I could use them to get extra reliability
Thats why I went into this iproute thing...
BestRegards
Jose
-----Original Message-----
From: linux-net-owner@xxxxxxxxxxxxxxx
[mailto:linux-net-owner@xxxxxxxxxxxxxxx] On Behalf Of wk
Sent: Thursday, March 25, 2010 4:56 AM
To: linux-net@xxxxxxxxxxxxxxx
Subject: Multipath route
Hello,
Some time ago we were faced with a problem with multiple network
interfaces in the same subnetwork.
We would like to use several NIC's with IP addresses from the same
subnetwork with link redundancy functionality.
If link redundancy is what you are after, you might want to consider
Ethernet bonding as an alternative. Instead of several network interfaces
each with its own IP address, you get a single virtual interface that you
assign addresses to and the physical interfaces become slaves to that
virtual interface. The bonding code switches the active interface when the
current active interface's link goes down.
See linux/Documentation/networking/bonding.txt in your kernel source tree.
Note there were at one time issues with using IPv6 over bonded interfaces.
I don't know if they have been addressed in newer kernel versions, but for
IPv4 it seems to work fine. Brocade has used it on some of its SAN
products for a few years now.
Jose,
Could you try to apply the patch I've sent yesterday and tell us if it
works for you?
This patch can be applied against 2.6.33 kernel and probably earlier
kernel versions, although I tested it only on 2.6.33.
That what you need to do in your case is to configure your route as you
wrote:
172.26.240.4
nexthop via 172.26.247.248 dev bond1 weight 1
nexthop via 172.26.31.248 dev bond0 weight 1
and additionally:
# echo 1 > /proc/sys/net/ipv4/route/nexthop_alg
regards,
WK
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