server - Problems while switching IP and MAC adresses - Ask Ubuntu
i've got 2 ubuntu-servers, each of them 2 ethernet cards. i'm trying switch 1 other high availability purposes. unfortunately, when querying arp mac address of first card (eth0) , not 1 of second card (eth1) ip-address has been dynamically assigned. can do?
example:
server 1:
eth0
- mac: 00:11:11:11:11:11
- ip: 192.168.0.1
eth1
- mac: 02:33:33:33:33:33
- ip: 192.168.0.3
server 2:
eth0
- mac: 00:22:22:22:22:22
- ip: 192.168.0.2
eth1
- down (goes mac , ip server1 eth1 when server1 goes down)
when execute arp -a 192.168.0.3
command windows machine, result 00:11:11:11:11:11 (eth0)
, not 02:33:33:33:33:33 (eth1)
what you're trying not impossible, not optimal neither...
back in xxth century, used exactly you're trying now, in xxist century, use bonding gives both reliability , higher throughput when both cards up.
so forget 2 ip addresses on 2 nics, go 1 ip address on both nics , take advantage of double throughput!
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