Paul Hoffman <paul.hoff...@vpnc.org> wrote: > > Forwarder -- Section 1 of [RFC2308] describes a forwarder as "a > nameserver used to resolve queries instead of directly using the > authoritative nameserver chain". [RFC2308] further says "The > forwarder typically either has better access to the internet, or > maintains a bigger cache which may be shared amongst many resolvers."
The following two sentences don't agree with each other very well. The first is wrong because there can be chains of forwarders. The second sentence is more correct, though I don't understand the distinction between "is iterative-only or can be a full resolver" because an iterative-only resolver is a full resolver. > That definition appears to suggest that forwarders normally only > query authoritative servers. > [RFC2308] > is silent on whether a forwarder is iterative-only or can be a full > resolver. This sentence disagrees with the RFC 2308 meaning: > In current use, however, forwarders > often stand between stub resolvers and recursive servers. The RFC 2308 usage is: stub -> recursive server 1 -> recursive server 2 RS1 is configured to use RS2 as a forwarder. In this definition "forwarder" is not a description of an individual server, it is a description of how a server (RS1) is configured to use another server (RS2). Neither RS1 nor RS2 are (by themselves) forwarders. Tony. -- f.anthony.n.finch <d...@dotat.at> http://dotat.at/ Irish Sea: East 4 or 5, veering southeast 5 to 7, perhaps gale 8 later. Slight or moderate, becoming moderate or rough. Occasional rain later. Good, becoming moderate or poor later. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
