[Xorp-users] Using XORP for PIM-SM

James Courtier-Dutton james.dutton at gmail.com
Mon Jun 9 12:50:30 PDT 2008


2008/6/5 Pavlin Radoslavov <pavlin at icsi.berkeley.edu>:
>
> The 32-bit bitfield was probably used in older kernels and/or
> userland programs.
> Now the olist in the kernel for example should be specified in an
> array of size MAXVIFS which can be redefined as appropriate.
>
> Approx. 2 years ago I had an interaction with a fellow who also
> wanted to increase the number of max. vifs in the Linux kernel.
> I believe he was able to achieve few hundred vifs, but I don't know
> whether he needed any more than this or whether he was hitting some
> other limits.
> The notes (and the discoveries re. other system limits) in the
> xorp/ERRATA file on the subject are from that experiment with him.
> In other words, it should be possible, but requires kernel and XORP
> recompilation, and system parameters tweaking. See the IGMP/MLD and
> PIM-SM entries in the xorp/ERRATA file for details.
> If you find some other limits, please us know so we can update the
> documentation.
>

Thank you. I followed the ERRATA, and managed to test 40 interfaces
all doing IGMP and PIM-SM today.

Only one minor gripe left, and that is the documented, non handling of
un-numbered PTP links.
It is not that important to the project at the moment, but if I
implement it, I will post a patch.

James



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