nettune ndd parameter equivalency

[yassine elhammar_1]

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

[James R. Ferguson]

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...

[rick jones]

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.