[Freeipmi-devel] Re: running ipmiping

[Albert Chu]

Hi Bala,

I documented this in the KNOWN ISSUES of the ipmiping and rmcpping
manpages.  The problem is the BMC gets confused if you send packets with
duplicate sequence numbers very quickly.

I've been debating if I should randomize the starting sequence numbers
of ipmi/rmcp-ping to give us a greater liklihood of avoiding the
problem.  Think I should??

Hmmmm, I never thought of doing this before with ipmi/rmcpping (I did it
in ipmipower), but the "confused BMC" problems seems to only happen when
the packets are sent from the same port.  Perhaps randomizing ports
would be just as good a solution.  I'll stick it in my TODO list in cvs
for consideration.

Al

--
Albert Chu
address@hidden
Lawrence Livermore National Laboratory

----- Original Message -----
From: "Bala.A" <address@hidden>
Date: Wednesday, September 29, 2004 4:36 pm
Subject: running ipmiping

> Hi Al
> I have noticed that ipmiping puts BMC in confused state.  This is
> reproducible with the following sequence
> 
> debian-sid:~# ipmiping -c 3 debian-ia64
> ipmiping debian-ia64 (192.168.1.60)
> response received from 192.168.1.60: rq_seq=0
> response received from 192.168.1.60: rq_seq=1
> response received from 192.168.1.60: rq_seq=2
> --- ipmiping debian-ia64 statistics ---
> 3 requests transmitted, 3 responses received in time, 0.0% packet loss
> debian-sid:~# ipmiping debian-ia64
> ipmiping debian-ia64 (192.168.1.60)
> response timed out: rq_seq=0
> response timed out: rq_seq=1
> response timed out: rq_seq=2
> response timed out: rq_seq=3
> response timed out: rq_seq=4
> response timed out: rq_seq=5
> response timed out: rq_seq=6
> response timed out: rq_seq=7
> response received from 192.168.1.60: rq_seq=8
> response timed out: rq_seq=9
> response timed out: rq_seq=10
> response timed out: rq_seq=11
> --- ipmiping debian-ia64 statistics ---
> 13 requests transmitted, 1 responses received in time, 92.3% packet 
> lossdebian-sid:~#
> 
> 
> Thanks,
> 
> Best Regards
> Bala
> 
> --
> Free as in Freedom
> http://www.gnu.org/
>