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Martijn Grooten wrote:
does anyone know of any way to prioritize DNS traffic on a Linux server, running SLES 11? That is, to make sure that when the bandwidth is fully used, DNS request (to an external DNS server) don't take longer than usual? Being able to do that would make my life a whole lot easier...
The traffic shaping (LARTC Howto) discuss prioritization. Basically if you configure the queue to build on the boxes interface you can choose to send whichever packet you like next.
But you can only meaningfully shape traffic on outbound interfaces, so if by bandwidth being fully used you mean inbound you need to fix it at the other end.
Do you cache the DNS information locally? If not I'd start with that, since that will reduce traffic and improve performance.
Simon -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html