vxlan: add rp_filter sysctl for multiple gateway nodes

[pve-docs.git] / vxlan-and-evpn.adoc

diff --git a/vxlan-and-evpn.adoc b/vxlan-and-evpn.adoc
index 3d495a30dae334dede48730b2afaa561a0e5be06..0a05cfb818095a13e83ea39d08fe62beb14405fc 100644 (file)
--- a/vxlan-and-evpn.adoc
+++ b/vxlan-and-evpn.adoc
@@ -1505,6 +1505,16 @@ The external router have ecmp routes to all proxmox nodes.(balancing).
 If the router send the packet to a wrong node (vm is not on this node), this node will route through
 vxlan the packet to final destination.
 
+If you have multiple gateway nodes, disable rp_filter as packet could incoming in a 1 node, and outgoing
+to another node.
+
+sysctl.conf tuning
+-----
+net.ipv4.conf.default.rp_filter=0
+net.ipv4.conf.all.rp_filter=0
+-----
+
+
 *node1
 
 ----