[BLU] ssh delays

[Chris Janicki]

Are you using a Java version of SSH?  If so, I've seen some annoying DNS 
delays when using the Sun JVMs, even if the lookups are ok.  (IBM JVMs 
have no DNS-related delays)

>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<<

On 9/21/01, 12:06:14 PM, John Chambers <jc at trillian.mit.edu> wrote 
regarding Re: [BLU] ssh delays:


> Chris Janicki writes:
> |
> | 2-cents... I've read that nslookup does not use the same networking=20
> | libraries/kernel routines/whatever that are used by applications (such 
a=
> | s=20
> | SSH).  So there is a possibility that nslookup may work, but yous=20
> | application can still fail to reverse lookup. =20
> |
> | I've seen this happen before, where nslookup works, but my Java app=20
> | stalls for 5-min, then continues merrily along.  It's a long shot, but 
i=
> | f=20
> | all else fails, try to write a small app to double-check the reverse=20
> | lookup.  (I could write a small Java version of nslookup If you'd 
like.)=


> Good idea.  It so happens that I have my own program  that  looks  up
> host   names   and   IP  addresses  by  calling  gethostbyname()  and
> gethostbyaddr().  I've seen times when  it  disagrees  with  nslookup
> about  what is defined.  I tried it on both ends of a link, and again
> it resolved all the FQDNs and IP addresses instantly.

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