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Please explain in detail this configuration of interfaces file

asked 2015-11-20 12:41:24 -0500

aksan gravatar image

# OpenStack External interface

auto eth2

iface eth2 inet manual

up ifconfig $IFACE up

up ip link set $IFACE promisc on

down ip link set $IFACE promisc off

down ifconfig $IFACE down

post-up ethtool -K $IFACE gro off

auto br-ex

iface br-ex inet static



post-up ethtool -K $IFACE gro off

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answered 2015-11-21 02:09:19 -0500

dbaxps gravatar image

Regarding disabling GRO view, to understand features which are disabled.
Due to eth2 is OVS port at br-ex it was placed in promiscuous mode to avoid dropping at br-ex packets with target IPs different from br-ex's IP.

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Asked: 2015-11-20 12:41:24 -0500

Seen: 135 times

Last updated: Nov 21 '15