Re: DAST: Iperf - jean-marc.lacroix --at-- gltrade.com
iperf v2.0.1 has a known issue with the TTL field in multicast.
Regardless of what you set it to with the -T option, it's always "1",
so it wont ever make it through a router. if you are doing
cross-router multicast with iperf you need to use version 1.7.0
instead.
At 7:10 -0600 4/1/05, Mitch Kutzko wrote:
> >Date: Fri, 1 Apr 2005 07:05:47 -0600
> >To: jean-marc.lacroix --at-- gltrade.com
>>Subject: DAST: Iperf - jean-marc.lacroix --at-- gltrade.com
>>
>>Contacting DAST re: Bug report about Iperf
>>From: Jean-Marc Lacroix <jean-marc.lacroix --at-- gltrade.com>
>>
>>Question/Comment:
>>Hi,
>>
>>I am using iperf (v2.01) to evaluate multicast data feed
>>
>>Here is the command launch on the receiver
>>iperf -s -B 225.1.1.1 -u -i 1
>>
>>Here is the command run on the emitter
>>iperf 225.1.1.1 -u -i 1 -T 3
>>
>>And the receiver does not receive anything
>>
>>It seems that data sent by the emitter do not go through the network (2
>Cisco 2620XM).
>>
>>
>--
>Mitch Kutzko | mitch --at-- dast.nlanr.net | mitch --at-- ncsa.uiuc.edu | 217-333-1199
>http://hobbes.ncsa.uiuc.edu/
--
-debbie
Debbie Fligor, n9dn Network Engineer, CITES, Univ. of Il
email: fligor --at-- uiuc.edu <http://www.uiuc.edu/ph/www/fligor>
"Every keystroke can be monitored. And the computers never forget."