This installation guide is: http://docs.openstack.org/juno/install-guide/install/yum/content/neutron-network-node.html#treeDiv
In Centos 7,controle node and network node in one machine.my output is: [root@controller-59 ~]# cat /proc/sys/net/ipv4/ip_forward 1 [root@controller-59 ~]# cat /proc/sys/net/ipv4/conf/all/rp_filter 0 [root@controller-59 ~]# cat /proc/sys/net/ipv4/conf/default/rp_filter 0 2015-11-13 18:01 GMT+08:00 Akihiro Motoki <amot...@gmail.com>: > 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. > > > > >
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