rohc team mailing list archive

[Didier Barvaux <didier@xxxxxxxxxxx>]

Hello,

> I'm using the rohctunnel application between two machines directly
> connected via fastethernet cards.
> I started the rohctunnel in both machines, tested it using pings and
> everything works fine.
> The problem appears when I tested with iperf. When I use rates above
> 100 kbps the "TX overruns" counter of the rohc0 interface (of the
> client machine) increase in a high rate.
> This problem also happens when I made a test using VoIP traffic. When
> I tried to use rohctunnel with more than 3 calls (G.729), I had this
> overrun problem and a degradation in my call statistics (jitter,
> packet loss...). Do you know what could be wrong? Could it be a bug?
> 
> I'm using version 1.6.1 of rohc library and configured rohctunnel
> using these steps:https://rohc-lib.org/wiki/doku.php?id=rohc-tunnel
> 
> I made the testes using ethernet and UDP rohctunnels. The same problem
> appears in both cases.

The rohctunnel app is deprecated. I used it for testing in the early
days of the library. It was never intended for performances.

The IP/ROHC tunnel application replaces it. Give it a try:
  https://rohc-lib.org/wiki/doku.php?id=summary#ip_rohc_tunnel

Also prefer using the ROHC library 1.7.0 over the 1.6.x versions.

Regards,
Didier