[ovs-discuss] Grouping GRE interfaces' flow with tun_id

[el05682]

 Hello,

 I am using OpenVswitch version 1.1.1.
 I have a bridge configuration consisted by multiple EoGRE tunnels.
 Here is an example output of ovs-vsctl list Interface (ommiting what I 
 consider as irrelevant info)

 admin_state         : up
 name                : "gre5"
 ofport              : 5
 options             : {key="4", remote_ip="10.0.0.5"}
 other_config        : {}
 status              : {tunnel_egress_iface="eth0", 
 tunnel_egress_iface_carrier=up}
 type                : gre

 admin_state         : up
 name                : "gre2"
 ofport              : 2
 options             : {key="1", remote_ip="10.0.0.2"}
 other_config        : {}
 status              : {tunnel_egress_iface="eth0", 
 tunnel_egress_iface_carrier=up}
 type                : gre

 admin_state         : up
 name                : "gre4"
 ofport              : 4
 options             : {key="4", remote_ip="10.0.0.4"}
 other_config        : {}
 status              : {tunnel_egress_iface="eth0", 
 tunnel_egress_iface_carrier=up}
 type                : gre

 admin_state         : up
 name                : "gre1"
 ofport              : 1
 options             : {key="1", remote_ip="10.0.0.1"}
 other_config        : {}
 status              : {tunnel_egress_iface="eth0", 
 tunnel_egress_iface_carrier=up}
 type                : gre

 admin_state         : up
 name                : "gre3"
 ofport              : 3
 options             : {key="1", remote_ip="10.0.0.3"}
 other_config        : {}
 status              : {tunnel_egress_iface="eth0", 
 tunnel_egress_iface_carrier=up}
 type                : gre

 While the connectivity works fine I was considering to add a flow based 
 on the gre key. I actually
 want to group the ifaces with the same gre key so I was thinking 
 something like
 #ovs-ofctl add-flow br0 
 tun_id=1,idle_timeout=0,priority=1,actions=set_tunnel:1,normal
 (I want normal action in order to preserve L2 lookups)

 The rule is created but there are no packets "caught". They always 
 "fall into" to the default rule.
 Am i doing something wrong? I, also, noticed a message NXST_FLOW reply 
 (xid=0x4) when I run dump-flows.
 Is it related to the problem?

 Lastly, can you propose me different ways to achieve this grouping 
 using OpenVswitch?
 I would, strongly, prefer a solution without Vlans!


 Thank you very much,
 Emmanouil