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keeping 2 dns on the network
Posted: Thu Jan 14, 2010 4:34 am
by daitea
i have two internet source with different dns address.
how do i keep them both running so i dont have to change dns with i change internet source. since a change in dns will mean to do same for all clients.
Re: keeping 2 dns on the network
Posted: Thu Jan 14, 2010 5:32 am
by fewi
Unless I'm misunderstanding what you're asking: Either configure them as primary and secondary on all clients and deal with the timeouts on the primary when it goes away; or run the caching DNS server on the router with those two as primary and secondary and configure clients to use the router as a DNS server and potentially transparently proxy other requests - you may still need to flip them on the router during an outage but you can script that with netwatch and it's only one change on one device.
http://wiki.mikrotik.com/wiki/DNS
Alternatively you can transparently NAT client DNS requests to whatever you want, but I think running a local caching resolver has more benefits.
Re: keeping 2 dns on the network
Posted: Thu Jan 14, 2010 5:45 am
by daitea
how do i setup and run a local caching resolver
Re: keeping 2 dns on the network
Posted: Thu Jan 14, 2010 6:09 am
by fewi
Read the link I posted.
Re: keeping 2 dns on the network
Posted: Thu Jan 14, 2010 6:18 am
by daitea
the whole problem is this. the are two different dns on the network 192.168.1.1,192.168.1.1 and 4.2.2.2,80.87.76.36. now what i want to do is this,
i want a situation where if the internet link using the first dns goes off i dont have to change the dns in all the client radio but the still browse the new link.
that is if there is some sort of table where i can put the 2 dns in each radio so it resolves by itself or anything i can do cos its too much work for me to go 1by 1 change each clients dns
pls i hope this is clear
Re: keeping 2 dns on the network
Posted: Thu Jan 14, 2010 12:21 pm
by RK
the whole problem is this. the are two different dns on the network 192.168.1.1,192.168.1.1 and 4.2.2.2,80.87.76.36. now what i want to do is this,
i want a situation where if the internet link using the first dns goes off i dont have to change the dns in all the client radio but the still browse the new link.
that is if there is some sort of table where i can put the 2 dns in each radio so it resolves by itself or anything i can do cos its too much work for me to go 1by 1 change each clients dns
pls i hope this is clear
http://wiki.mikrotik.com/wiki/DNS