Re: Multicast example in ANTS: "Nowhere to send"

[Samarth Shah <shshah@cs.uiuc.edu>]

Hi,

Basically, for some values of inter-data capsule delay at the source
(in multicast.config), the Router crashes/hangs a short while into the
run. When exactly the Router crashes depends on the value of the delay.
For some delays, it does not crash.

What the stability of the Router has to do with delay between data
capsules emitted by the source, I don't know for sure.

I hope this is sufficient description of the problem.

Regards,
Samarth.

On Sun, 25 Nov 2001, Samarth Shah wrote:

> Hi,
>
> Upon further investigation, I have determined that the Nowhere to send
> errors appears for some particular values of delays in multicast.config.
> The problem seems to be that, after a while, the Multicast Subscribe
> requests from the Data Subscribers cease to be received at the Router.
>
> That is, the Data Subscriber keeps printing periodically that it is
> sending the subscribe request. However, the Router freezes and does not
> print _anything_, while it was previously printing that it received these
> subscription packets.
>
> I am wondering if there could be a problem with simultaneous reception of
> subscribe requests at the router or something, because it probably has to
> do with the relative timing of the delays in multicast.config.
>
> Thanks and regards,
> Samarth.
>
>
>