On 21.05.13 11:03, Mark Andrews wrote:
> The simplest solution is to slave the root zone and
> turn off notify to so you don't spam the official
> root servers. 192.5.5.241 is f.root-servers.net.
In message <20130521072352.ga17...@fantomas.sk>, Matus UHLAR - fantomas writes:
I thought this is not oficially recommended for ordinary users to prevent
root servers from being overloaded (transfers use much more resources than
ordinary lookups). Has this changed?
On 21.05.13 18:02, Mark Andrews wrote:
Zone transfers of the root zone by recursive servers would actually
reduce the overall load on root nameservers. The bigger the recursive
server the more this is true as most queries to the root servers
are for non-existent domains. Actual referrals get cached which
draws legitimate traffic away from the root servers towards the TLD
servers. 16 SOA queries a day plus 2 AXFR/IXFR requests for normal
operations.
Just don't add lots the root servers in the masters cause as the
root server operators do check that their servers are transfering
the root zone.
But this makesthe situation worse for those who decided to do the slaving
- it creates a risk that root server forbids slaving in the future and after
zone expiration the resolution will fail for all zones.
...I did slave root at my former employee (an ISP in slovakia), since I
believed that this ISP is big enough that even roots would benefit from
lower traffic. I found that 5 of root servers allow the transfer.
and I found that the traffic towards root servers is really smaller enough.
I'm just asking if this is wise for small hosts/companies.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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