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Christian Williamson
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 Posted: Tue Nov 11, 2008 4:11 pm Post subject: Multicast problem on Fedora 9.... |
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All,
I've got three boxes, one running Fedora 7, one Fedora 9, and one
Windows XP. I have two programs, one called listener and one called
sender, both from the Internet. Listener listens for multicast
messages, and sender sends out those messages, about every second.
I turn on multicasting in both 7 and 9 using the following command:
route add -net 224.0.0.0 netmask 224.0.0.0 eth0
The Windows XP box is also set up for multicasting without my doing
anything.
I have copies of listener and sender on all three boxes, compiled on
each box. I also have wireshark running in promiscuous mode -- using
'ifconfig eth0 promisc' to get there -- on the Fedora 9 box.
Here are the results of running these programs:
1) sender on Fedora 9, listener on Fedora 7: the listener gets the
sender's messages;
2) sender on Fedora 7, listener on Fedora 9: No messages make it to
the listener; and
3. sender on Windows XP, listeners on both Fedora 7 and Fedora 9: The
Fedora 7 listener gets the messages, but Fedora 9 does not.
Wireshark on Fedora 9 indicates the messages are coming from Fedora 7
to the Fedora 9 box. I see the messages with "Source port: filenet-pa"
and "Destination port: italk."
What's going on in Numbers 2 and 3 above? For some reason Fedora 9
can't hear the messages from the Fedora 7 box.
Chris
P.S.
I have yet another Fedora 9 laptop that I connected to the network,
ftp-ed the files from the first Fedora 9 laptop, set up multicast
using the route command above, ran listener there, but didn't get the
messages. |
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david
Guest
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| Posted: Tue Nov 11, 2008 4:11 pm Post subject: Re: Multicast problem on Fedora 9.... |
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On Tue, 11 Nov 2008 10:11:16 +0000, Christian Williamson rearranged some
electrons to say:
| Quote: | All,
I've got three boxes, one running Fedora 7, one Fedora 9, and one
Windows XP. I have two programs, one called listener and one called
sender, both from the Internet. Listener listens for multicast messages,
and sender sends out those messages, about every second.
I turn on multicasting in both 7 and 9 using the following command:
route add -net 224.0.0.0 netmask 224.0.0.0 eth0
The Windows XP box is also set up for multicasting without my doing
anything.
I have copies of listener and sender on all three boxes, compiled on
each box. I also have wireshark running in promiscuous mode -- using
'ifconfig eth0 promisc' to get there -- on the Fedora 9 box.
Here are the results of running these programs:
1) sender on Fedora 9, listener on Fedora 7: the listener gets the
sender's messages;
2) sender on Fedora 7, listener on Fedora 9: No messages make it to the
listener; and
3. sender on Windows XP, listeners on both Fedora 7 and Fedora 9: The
Fedora 7 listener gets the messages, but Fedora 9 does not.
Wireshark on Fedora 9 indicates the messages are coming from Fedora 7 to
the Fedora 9 box. I see the messages with "Source port: filenet-pa" and
"Destination port: italk."
What's going on in Numbers 2 and 3 above? For some reason Fedora 9 can't
hear the messages from the Fedora 7 box.
Chris
P.S.
I have yet another Fedora 9 laptop that I connected to the network,
ftp-ed the files from the first Fedora 9 laptop, set up multicast using
the route command above, ran listener there, but didn't get the
messages.
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Disable Network Manager in the F9 box, that might help:
http://www.mjmwired.net/resources/mjm-services-f9.html |
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Christian Williamson
Guest
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| Posted: Tue Nov 11, 2008 5:08 pm Post subject: Re: Multicast problem on Fedora 9.... |
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david wrote:
| Quote: | On Tue, 11 Nov 2008 10:11:16 +0000, Christian Williamson rearranged some
electrons to say:
All,
I've got three boxes, one running Fedora 7, one Fedora 9, and one
Windows XP. I have two programs, one called listener and one called
sender, both from the Internet. Listener listens for multicast messages,
and sender sends out those messages, about every second.
I turn on multicasting in both 7 and 9 using the following command:
route add -net 224.0.0.0 netmask 224.0.0.0 eth0
The Windows XP box is also set up for multicasting without my doing
anything.
I have copies of listener and sender on all three boxes, compiled on
each box. I also have wireshark running in promiscuous mode -- using
'ifconfig eth0 promisc' to get there -- on the Fedora 9 box.
Here are the results of running these programs:
1) sender on Fedora 9, listener on Fedora 7: the listener gets the
sender's messages;
2) sender on Fedora 7, listener on Fedora 9: No messages make it to the
listener; and
3. sender on Windows XP, listeners on both Fedora 7 and Fedora 9: The
Fedora 7 listener gets the messages, but Fedora 9 does not.
Wireshark on Fedora 9 indicates the messages are coming from Fedora 7 to
the Fedora 9 box. I see the messages with "Source port: filenet-pa" and
"Destination port: italk."
What's going on in Numbers 2 and 3 above? For some reason Fedora 9 can't
hear the messages from the Fedora 7 box.
Chris
P.S.
I have yet another Fedora 9 laptop that I connected to the network,
ftp-ed the files from the first Fedora 9 laptop, set up multicast using
the route command above, ran listener there, but didn't get the
messages.
Disable Network Manager in the F9 box, that might help:
http://www.mjmwired.net/resources/mjm-services-f9.html
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Thanks, I'll give it a shot, let you know. |
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Christian Williamson
Guest
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| Posted: Tue Nov 11, 2008 5:41 pm Post subject: Re: Multicast problem on Fedora 9.... |
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david wrote:
| Quote: | On Tue, 11 Nov 2008 10:11:16 +0000, Christian Williamson rearranged some
electrons to say:
All,
I've got three boxes, one running Fedora 7, one Fedora 9, and one
Windows XP. I have two programs, one called listener and one called
sender, both from the Internet. Listener listens for multicast messages,
and sender sends out those messages, about every second.
I turn on multicasting in both 7 and 9 using the following command:
route add -net 224.0.0.0 netmask 224.0.0.0 eth0
The Windows XP box is also set up for multicasting without my doing
anything.
I have copies of listener and sender on all three boxes, compiled on
each box. I also have wireshark running in promiscuous mode -- using
'ifconfig eth0 promisc' to get there -- on the Fedora 9 box.
Here are the results of running these programs:
1) sender on Fedora 9, listener on Fedora 7: the listener gets the
sender's messages;
2) sender on Fedora 7, listener on Fedora 9: No messages make it to the
listener; and
3. sender on Windows XP, listeners on both Fedora 7 and Fedora 9: The
Fedora 7 listener gets the messages, but Fedora 9 does not.
Wireshark on Fedora 9 indicates the messages are coming from Fedora 7 to
the Fedora 9 box. I see the messages with "Source port: filenet-pa" and
"Destination port: italk."
What's going on in Numbers 2 and 3 above? For some reason Fedora 9 can't
hear the messages from the Fedora 7 box.
Chris
P.S.
I have yet another Fedora 9 laptop that I connected to the network,
ftp-ed the files from the first Fedora 9 laptop, set up multicast using
the route command above, ran listener there, but didn't get the
messages.
Disable Network Manager in the F9 box, that might help:
http://www.mjmwired.net/resources/mjm-services-f9.html
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I tried replacing NetworkManager with network, as the instructs said.
Didn't work. Hmmm..... |
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