Hi, The problem is to push two MPLS labels onto a packet, the inner one based on input port and the outer one based on destination IP address. However, the spec does not allow this in any way. We looked at three options:
Option 1. Match on input port on table 0 and push a MPLS label, next, match on dest IP address in table 1 and push a MPLS label. The spec does not allows this, because we cannot look at the IP address after we push a MPLS label, according to the spec. Option 2. Match on dest IP address on table 0 and push a MPLS label, next, match on input port in table 1 and push a MPLS label. But in this case, according to the spec, we can only push an outmost label everytime we push. This does not work for us either. Option 3. Accumlate all actions in the Action Set using the WriteActions Instruction. This does not work either, because the Action Set cannot have more than one of the same kind of action. Is there any other way of accomplishing this? If not, we think this is a flaw in the spec that does not allow for inserting more than one label. Thanks Kiran
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