BIND 9 tcp-client quotas

Richard Caissie (EUD) Richard.Caissie at am1.ericsson.se
Fri Sep 13 15:28:35 UTC 2002


Hi Mark,

>	The nameserver stops accepting future connections until the current
>	ones complete / are timed out.  Note the kernel may complete the
>	handshake up to the listen queue length.
>
>	Mark

If I have 10 active AXFR clients going with a tcp-clients setting of 10, should 
I be able to do a dig as follows and get an answer?

dig +time=999 +tcp localhost

The named.run file shows that the TCP quota is reached, but BIND 9 still answers the 
query.

thanks,
Richard Caissie

-----Original Message-----
From: Mark.Andrews at isc.org [mailto:Mark.Andrews at isc.org]
Sent: Thursday, September 12, 2002 7:49 PM
To: Richard Caissie (EUD)
Cc: bind9-users at isc.org; bind9-workers at isc.org
Subject: Re: BIND 9 tcp-client quotas 



> The ARM states that tcp-clients sets "The maximum number of simultaneous clie
> nt TCP connections that the server will accept."
> 
> When I set this to 1 with BIND 9.2.1/Solaris 8, I am able to do two and more 
> simultaneous AXFRs. Is there something wrong with the server or did I read th
> e
> ARM the wrong way? 
> 
> After the second AXFR the named.run file shows:
> 
> Sep 12 15:58:54.043 client 127.0.0.1#33478: no more TCP clients: quota reache
> d
> Sep 12 15:58:54.045 client 127.0.0.1#33478: transfer of '1.2.3.4.5.e164.arpa/
> IN': AXFR 
> started

	The nameserver stops accepting future connections until the current
	ones complete / are timed out.  Note the kernel may complete the
	handshake up to the listen queue length.

	Mark

> 
> many thanks,
> Richard Caissie
> DNS & DHCP Development Unit
> Ericsson
> 959 Concord Street
> Framingham, MA 01701
> USA
> 
> 
> 
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org




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