On Mar 10, 2016, at 5:47 PM, Ben Pfaff <b...@ovn.org> wrote: > > On Thu, Mar 10, 2016 at 05:24:43PM -0800, Ben Warren wrote: >> Thanks Ben >>> On Mar 10, 2016, at 11:05 AM, Ben Pfaff <b...@ovn.org> wrote: >>> >>> On Thu, Mar 10, 2016 at 10:51:35AM -0800, Ben Warren wrote: >>>> Hi, >>>> >>>> I’m wondering how to strip VLAN tags when using OpenFlow version 1.1 or >>>> greater messaging. The “strip_vlan” action in “ovs-ofctl” seems to be >>>> version 1.0-only. The “parse_op_flow_mod_str()” function returns 0xa, >>>> which = (OFPUTIL_P_OF10_STD_TID | OFPUTIL_P_OF10_NXM_TID). I’ve tried the >>>> following: >>>> >>>> • Use “pop_vlan” instead of “strip_vlan”, but they seem to be aliased >>>> • Use “mod_vlan_vid=0”, but that still sends 802.1Q frames >>>> • Use “mod_vlan_vid=-1” and “mod_vlan_vid=0xffff”, but get syntax >>>> errors >>> >>> Make sure you match on the presence of a VLAN tag; OF1.1+ requires this. >> >> The “ovs-ofctl” man page says to set “dl_vlan=0xffff” to match untagged >> frames, but there’s no mention of a wildcard for “all tagged frames”. Am I >> reading this right? I’d like to unconditionally strip off all tags if >> possible. > > You can use "vlan_tci=0x1000/0x1000" to match any packet with an 802.1Q > header.
Thanks! I’ll try it. —Ben
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