LinHES Forums :: View topic - diskless frontend bring my network down

LinHES Forums http://forums.linhes.org/

diskless frontend bring my network down http://forums.linhes.org/viewtopic.php?f=14&t=16238	Page 1 of 1

Author:	dfr0g [ Mon Aug 27, 2007 9:40 am ]
Post subject:	diskless frontend bring my network down
Hi, this is my network: Desktop(WinXP) ------------------->Switch ---------->Router / Masterbackend(Suse) -----> Internet Frontend (Knoppmyth)--------------^ The Mythfrontend boots from Masterbackend-Server via nfs root. My problem is, that from time to time the network "hangs". That means that no packets arrive any station. I can't ping from desktop to Server or from Server to Backend or anything else. It only happens while watching liveTV. What I have done: - I increase the value for /proc/sys/net/ipv4/ipfrag_high_thresh - I switch the boot option to NFS v3 - changing cables - changing NIC on Server Has anyone a better idea? regards Dfr0g

Author:	Girkers [ Tue Aug 28, 2007 4:01 am ]
Post subject:
Does LiveTV hang? you didn't say. Could I suggest it is possibly the switch as well, have you tried to power cycle the switch when the problem exists? If possible another way to trouble shoot would be to take the switch out of the situation. "If possible" you would need a cross-over cable and connect the Frontend to the MBE directly using this cable and test watching LiveTV and see if the problem exists. Another thing you could try is d/l a program for windows called ShowTraf (there may be a Linux equivalent) this will show you what traffic is occurring on your network.

Author:	dfr0g [ Fri Aug 31, 2007 9:11 am ]
Post subject:
Yes livetv hangs. I tried to power off and switch the switch (g) on again when it happens. But this doesn't bring the network up again. I think it's not the switch. I think only the server goes down. The server hosts the system for myth and itself. So I can't ping both systems when the server goes down. I decreased the mtu on all interfaces in the net to 1492 ( recommended ). This speeds up the net(!) but the lags where also there. For know i disabled a bridge interface that ist installed on server to let openvpn clients connect my network and I disabled the default autoexpire option for livetv. It could by that both backends ( slave and master ) try to delete expired records on same time..... I hope this will fix it regards Dfr0g

Page 1 of 1	All times are UTC - 6 hours
Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/