Re: tcp versus udp

2009-05-07 Thread Sam Wilson
In article , Barry Margolin wrote: > In article , > Sam Wilson wrote: > > > In article , Mark Elkins > > wrote: > > > > > One place that TCP may make sense - if you are involved in a registry > > > system and the process involves actually checking the information that > > > you are given,

Re: tcp versus udp

2009-05-06 Thread Mark Andrews
In message , Barry Margolin writes: > In article , > Sam Wilson wrote: > > > In article , Mark Elkins > > wrote: > > > > > One place that TCP may make sense - if you are involved in a registry > > > system and the process involves actually checking the information that > > > you are given,

Re: tcp versus udp

2009-05-06 Thread Barry Margolin
In article , Sam Wilson wrote: > In article , Mark Elkins > wrote: > > > One place that TCP may make sense - if you are involved in a registry > > system and the process involves actually checking the information that > > you are given, including nameservers (do they exist, do they serve that

Re: tcp versus udp

2009-05-06 Thread Sam Wilson
In article , Mark Elkins wrote: > One place that TCP may make sense - if you are involved in a registry > system and the process involves actually checking the information that > you are given, including nameservers (do they exist, do they serve that > zone - correctly?) - it may make a lot of s

Re: tcp versus udp

2009-05-06 Thread Sam Wilson
In article , Danny Mayer wrote: > Peter Dambier wrote: > > Hello Martin, > > > > since a major outage at my provider, dtag.de or Deutsche Telecom AG, I have > > trouble > > with f.root-servers.net. Sometimes "dig ... +vc" does help me to see > > f.root-servers.net. > > > > The real problem i

Re: tcp versus udp

2009-05-05 Thread Mark Elkins
On Wed, 2009-05-06 at 07:59 +0200, Stephane Bortzmeyer wrote: > On Wed, May 06, 2009 at 12:00:12AM -0400, > Danny Mayer wrote > a message of 39 lines which said: > > > That's nonsense. > > That's Peter Dambier. If you try to fix every mistake he makes, you're > not over soon... Some people a

Re: tcp versus udp

2009-05-05 Thread Stephane Bortzmeyer
On Wed, May 06, 2009 at 12:00:12AM -0400, Danny Mayer wrote a message of 39 lines which said: > That's nonsense. That's Peter Dambier. If you try to fix every mistake he makes, you're not over soon... http://xkcd.com/386/ ___ bind-users mailing lis

Re: tcp versus udp

2009-05-05 Thread Danny Mayer
Peter Dambier wrote: > Hello Martin, > > since a major outage at my provider, dtag.de or Deutsche Telecom AG, I have > trouble > with f.root-servers.net. Sometimes "dig ... +vc" does help me to see > f.root-servers.net. > > The real problem is anycast. With udp it behaves different than with tc

Re: tcp versus udp

2009-05-05 Thread Peter Dambier
> > To: bind-us...@isc.org > From: Peter Dambier > Sent by: bind-users-boun...@lists.isc.org > Date: 05/05/2009 05:31AM > Subject: Re: tcp versus udp > > Hello Martin, > > since a major outage at my provider, dtag.de or Deutsche Telecom AG,

Re: tcp versus udp

2009-05-05 Thread Traynham . Ken
Please explain: With DNSSEC tcp is almost a must. Same with IPv6.Is EDNS0 not sufficient? Thanks,Ken Ken TraynhamNetwork Engineer, ITS-EPA CLIN9CSC79 TW Alexander Drive, Building 4201, Durham NC 27709ITIS | p: 919.767.7059 | f: 919.767.7506 | traynham@epa.gov | www.csc.com--

Re: tcp versus udp

2009-05-05 Thread Peter Dambier
Hello Martin, since a major outage at my provider, dtag.de or Deutsche Telecom AG, I have trouble with f.root-servers.net. Sometimes "dig ... +vc" does help me to see f.root-servers.net. The real problem is anycast. With udp it behaves different than with tcp. When querying servers that are di

Re: tcp versus udp

2009-05-04 Thread Ben Croswell
Also if EDNS0 is in effect theoretically the max size would be 4096 bytes before a truncate happened. -- -Ben Croswell On Mon, May 4, 2009 at 8:55 PM, Martin McCormick wrote: > Matt Baxter writes: > > When a response can not fit in a single UDP packet the server will mark > > the > > truncated

Re: tcp versus udp

2009-05-04 Thread Martin McCormick
Matt Baxter writes: > When a response can not fit in a single UDP packet the server will mark > the > truncated flag (and respond with all the data it can inside the UDP > packet). That should trigger a client to resubmit the query via TCP. Zone > transfers are the most common use for TCP, but it

Re: tcp versus udp

2009-05-04 Thread Matt Baxter
On May 4, 2009, at 7:28 PM, Martin McCormick wrote: When are tcp dns queries necessary? It was my understanding that clients could user tcp or udp. When a response can not fit in a single UDP packet the server will mark the truncated flag (and respond with all the data it c

RE: tcp versus udp

2009-05-04 Thread Baird, Josh
In addition, TCP is used for queries > 512bytes. Josh From: bind-users-boun...@lists.isc.org on behalf of Eduardo Júnior Sent: Mon 5/4/2009 8:35 PM To: Martin McCormick Cc: bind-us...@isc.org Subject: Re: tcp versus udp Hi, On Mon, May 4, 2009 at 9

Re: tcp versus udp

2009-05-04 Thread Eduardo Júnior
Hi, On Mon, May 4, 2009 at 9:28 PM, Martin McCormick wrote: >When are tcp dns queries necessary? > >It was my understanding that clients could user tcp or > udp. According to what I read, dns queries are executed using udp Only zone transfers use tcp connections. But still acc

tcp versus udp

2009-05-04 Thread Martin McCormick
When are tcp dns queries necessary? It was my understanding that clients could user tcp or udp. Martin McCormick WB5AGZ Stillwater, OK Systems Engineer OSU Information Technology Department Telecommunications Services Group ___ bind-us