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Re: How to change MTU for venet? [message #36547 is a reply to message #36546] Tue, 30 June 2009 10:30 Go to previous messageGo to previous message
eclipser is currently offline  eclipser
Messages: 6
Registered: June 2009
Junior Member
Hi,

I did set ``MTU=9000'' in

/etc/sysconfig/network-scripts/ifcfg-venet0

but it's being ignored at boot time. When I set it manually using ``ifconfig venet0 mtu 9000'' it is set to MTU: 9000 and works okay (AFAICS).

Inside the VE I configured /etc/sysconfig/network-scripts/ifup-eth 'the hard way' (just for testing):

--- ifup-eth_ORIG 2009-06-30 14:44:00.000000000 +0400
+++ ifup-eth 2009-06-30 13:23:31.000000000 +0400
@@ -155,9 +155,11 @@
done
fi

-if [ -n "${MTU}" ]; then
- ip link set dev ${DEVICE} mtu ${MTU}
-fi
+# if [ -n "${MTU}" ]; then
+ # ip link set dev ${DEVICE} mtu ${MTU}
+# fi
+# 200906230 by tis
+ip link set dev ${DEVICE} mtu 9000

if [ -n "${DYNCONFIG}" -a -x /sbin/dhclient ]; then
# Remove any temporary references which were previously added to dhclient config

and it works -- when rebooting the VE, it comes up with venet0 set to MTU 9000.

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