Could you share the exact place of the installation guide? I would like to check it.
Are you talking about the network node? I think these settings are required when you configure a network node without network namespace. If we use network namespace in a network node, I don't think we need these settings in a host of a network node. ip_forward=1 is set automatically in a router network namespace. I checked my Juno production environment with network namespace, I see the following in a host level. It uses Ubuntu 14.04. $ cat /proc/sys/net/ipv4/ip_forward 0 $ cat /proc/sys/net/ipv4/conf/all/rp_filter 1 $ cat /proc/sys/net/ipv4/conf/default/rp_filter 1 Akihiro 2015-11-13 18:51 GMT+09:00 JinXing F <jinxin...@gmail.com>: > Yes,I don't understand why Neutron needs enable ip_forward and disable RPF. > And I also don't understand where the neutron need this config during the > instance connect to the extrernal network. > > I read the neutron code, found when the L3 agent creating, it needs the > ip_forward config,but i'm not find the RPF config in the neutron code. > > Thank you very much! > > > 2015-11-11 18:25 GMT+08:00 JinXing F <jinxin...@gmail.com>: >> >> Hi, guys: >> >> during the neutron installation guide, I found that we need to config >> the linux kernel as bellow: >> >> net.ipv4.ip_forward=1 >> >> net.ipv4.conf.all.rp_filter=0 >> >> net.ipv4.conf.default.rp_filter=0 >> >> >> the first one is the ip address translation between LAN and WLAN, the >> second and third command is used for "Reverse Path Filtering". >> >> I cann't understand the purpose of the config in the neutron. >> >> 1. If the instance in compute node connect with exteral network,what's the >> function of the three config? >> >> 2. The instance connect with each others, what's the function of the three >> config? >> >> >> I am very confused about this config.Please explain the answer to me. >> >> Thanks. > > __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
