Multicast problems....
Hi, folks -- Just got this from a user and wanted to bounce it off everyone
here. Any ideas what his multicast problem might be?
Thanks!
Mitch
PS - Here's his background:
--------------------------------
Let me give you a quick background about our network... ucaid and
NOAA are on the same switch that noc.maxgigapop.net is on, and they
are both able to do multicast stuff without any problems. It seems as
though I'm running into more of a host-level problem rather than a
network problem, but I'm curious as to what you think about this.
I've tried adding options MROUTING and options PIM to my FreeBSD
kernel, and this didn't seem to change anything.
I'm not sure if this is a good test, but I can't seem to get iperf to
bind to a multicast address if I do something like 'iperf -s -B
224.1.2.3':
# iperf -s -B 224.1.2.3
bind failed: Address family not supported by protocol family
However, I can run utilities like vat/rat/vic on
multicast addresses and it will sit there and wait for
audio/video/whatever and it won't give me any errors.
The machine that is currently sending is a FreeBSD 4.3-STABLE box
(going to be upgraded to 5.2.1-REL soon). I seem to have similar
problems with 4.10-STABLE.
If I ifconfig the interface, I see that it's indeed multicast-capable:
ti0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 206.196.176.2 netmask 0xfffffffc broadcast 206.196.176.3
inet6 fe80::2a0:ccff:fe73:36b0%ti0 prefixlen 64 scopeid 0x1
ether 00:a0:cc:73:36:b0
media: autoselect (1000baseSX <full-duplex>) status: active
supported media: autoselect 1000baseSX <full-duplex> 1000baseSX
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--
Mitch Kutzko | mitch --at-- dast.nlanr.net | mitch --at-- ncsa.uiuc.edu | 217-333-1199
Project: http://dast.nlanr.net/ | Personal: http://hobbes.ncsa.uiuc.edu/