topic nettune ndd parameter equivalency in Operating System - HP-UX

nettune ndd parameter equivalency

yassine elhammar_1 — Tue, 03 Apr 2001 17:27:50 GMT

hi all
I need to know the equivalent ndd parameters for the 3 nettune tcp parms: tcp_keepstart, tcp_keepstop, tcp_keepfreq

thanks for your help

Re: nettune ndd parameter equivalency

James R. Ferguson — Tue, 03 Apr 2001 17:45:25 GMT

Hi:

You should look at document #S1100002433B.

This defines the keepalive timers in 10.20 and 11.0. There is no 'tcp_keepfreq' equivalent in 11.x. Otherwise:

# tcp_keepalive_interval = tcp_keepstart

# tcp_ip_abort_interval = tcp_keepstop

...JRF...

Re: nettune ndd parameter equivalency

rick jones — Wed, 04 Apr 2001 16:51:04 GMT

You might find the briefs at:

ftp://ftp.cup.hp.com/dist/networking/briefs/

useful.

There are now two keepalive parms in 11.X - one is tcp_keepalive_interval, which is analagous to tcp_keepstart, but in units of _milliseconds_ not seconds... There is also tcp_keepalive_detached_interval, which is the "tcpkeepstart" used when the connection becomes detached (basically, it is there to cull FIN_WAIT_2 connections to buggy stacks/apps using RTS instead of FIN closing of TCP connections).

The tcp_keepstop is now based on tcp_ip_abort_interval, but do be _very_ careful messing with that as it will also be the maximum (cumulative) time to wait for an ACK of a TCP segment in an ESTABLISHED connection.