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i have 2 network connection 1 normal 1 backup from NW side

 
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AA786
Frequent Advisor

i have 2 network connection 1 normal 1 backup from NW side

i have 2 network connection 1 normal 1 back from NetWork side ,how i can assure that if one nework down ,another ll get activate?
is the any configuration in linux side?
no bonding here.

pls advice
4 REPLIES
Steven E. Protter
Exalted Contributor
Solution

Re: i have 2 network connection 1 normal 1 backup from NW side

Shalom,

If you want assurance of one or the other being up, bonding is your best bet.

If you won't do that then bring them both up with different IP addresses. Use DNS alias techniques to direct traffic to the second interface when the first is down.

SEP
Steven E Protter
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Ivan Ferreira
Honored Contributor

Re: i have 2 network connection 1 normal 1 backup from NW side

Can you explain a little more what do you want to do? Is it "normal" interface in the same switch vlan as "backup". Are they in the same or different subnet? What is your goal?
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
AA786
Frequent Advisor

Re: i have 2 network connection 1 normal 1 backup from NW side

ok
eht0--- 1 ip ( now connected with network)
eth3--- 2 ip (for backup network)

networkip is changing from NW side so for some time eth0 ll be down.

so my traffc ll be tru eth3,how i can sure that eht3 ll get activate when eth0 line is down?
Thanks in advance
AA786
Frequent Advisor

Re: i have 2 network connection 1 normal 1 backup from NW side

thanks ..