SUMMARY: TCP Slow Connection ?

From: Eric Y. Shao (ericshao@post1.com)
Date: Mon Apr 21 1997 - 23:15:48 CDT


The real problem is I did not change to DNS server's address
in one of the /etc/resolv.conf.

Thanks to

varshney@pacbell.net
prh@ece.iit.edu (Paul R. Hybert)

for their quick and acurate replies..

eric
-----------------------------Original Post--------------------------------------
>Dear Sun Gurus,
>
>I have 2 SunUltra-1 with Solaris 2.5.1 in same LAN segment , one(A) is running
>Oracle Database, and the other one(B) with default system setup only.(No NIS
>running)
>
>The symptom is,
>~~~~~~~~~~~~~~~
> telnet from PC to A, after SYN/SYN/ACK handshake, it takes about 50 seconds
> to get login prompt. (monitored from Lan Analyzer) , after login,
 
> everything just works fine. also the same with ftp.
> while telnet from PC to B and telnet from B to A is ok.
>
> there is another Sun Sparc-1000 running Oracle has the same symptom,
> and another Sun Sparc-20 running Oracle has no login problem.
>
>ping from A to PC shows
>~~~~~~~~~~~~~~~~~~~~~~~
> sunul01# ping -s 128.1.150.12(PC's IP Addr.)
> PING 128.1.150.12: 56 data bytes
> 64 bytes from 128.1.150.12: icmp_seq=0. time=1. ms
> 64 bytes from 128.1.150.12: icmp_seq=1. time=4001. ms <---
> 64 bytes from 128.1.150.12: icmp_seq=2. time=3001. ms
> 64 bytes from 128.1.150.12: icmp_seq=3. time=2002. ms
> 64 bytes from 128.1.150.12: icmp_seq=4. time=1002. ms <---
> 64 bytes from 128.1.150.12: icmp_seq=5. time=3. ms
> 64 bytes from 128.1.150.12: icmp_seq=6. time=0. ms
>
>My question is
>~~~~~~~~~~~~~~~
> It is obvious not a Lan cable problem, what might cause such slow
> connection ?
>
>TIA
>
>Eric
>
>

 



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