On Wed, 14 Nov 2018 08:36:52 +0900, michael johnson wrote: > I want to modify a packet header field MPLS LABEL by adding a constant to > it. Openflow 1.3 supports "set field" action by which we can assign a new > value to a packet header. But I am not able to find any way to add a > constant to an existing value of a packet header. > One direction which I can think of is to copy the content of MPLS LABEL > field to the metadata field supported by OpenFlow 1.3 and then do an add > operation on the metadata field. But I do not know if this is possible or > not. > Another direction I can think is to pop the MPLS header, add the constant > to MPLS LABEL field and then push the modified MPLS header. Is this > possible?
You can match on a specific MPLS label value and use pop_mpls and push_mpls actions, but I don't think it is possible to do arithmetics with flow entries (except for MPLS TTL). -- IWAMOTO Toshihiro _______________________________________________ Ryu-devel mailing list Ryu-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ryu-devel
