How to configure Q-in-Q from python?

[johc...@gmail.com]

Hi,

I'm able to configure Q-in-Q from Ostinato GUI interface.  The protocol field returned in drone is as follow:

[127.0.0.1:50335]   protocol {

[127.0.0.1:50335]     protocol_id {

[127.0.0.1:50335]       id: 208

[127.0.0.1:50335]     }

[127.0.0.1:50335]     [OstProto.svlan] {

[127.0.0.1:50335]       is_override_tpid: true

[127.0.0.1:50335]       tpid: 34984

[127.0.0.1:50335]       vlan_tag: 0

[127.0.0.1:50335]     }

[127.0.0.1:50335]     [OstProto.vlan] {

[127.0.0.1:50335]       is_override_tpid: false

[127.0.0.1:50335]       tpid: 33024

[127.0.0.1:50335]       vlan_tag: 0

[127.0.0.1:50335]     }

[127.0.0.1:50335]   }

The protocol id used by GUI seems to be from ostinato.core.ost_pb.Protocol.kVlanStackFieldNumber.

However, in vlanstack_pb2.py, it looks like is_extendable is set to False, so I'm not able to access the svlan and vlan field from Python under the vlanstack proto.  Am I on the right track that the Q-in-Q config seems to be not supported from python currently?

Name: python-ostinato

Version: 0.7.1

Location: /usr/local/lib/python2.7/dist-packages

Requires: protobuf

Thanks,

-John

[Srivats P]

All functionality available in the GUI is available via Python including QinQ.

I suggest you configure a QinQ stream via the GUI and then save it as
a python script to examine the python code required for QinQ

Srivats

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[John Cheung]

Thanks Srivats.  Didn't know that function existed and it is tremendously helpful.

Here is the code snippet for stacked vlan, which seems to work fine:

    p = s.protocol.add()
    p.protocol_id.id = ost_pb.Protocol.kVlanStackFieldNumber
    p.Extensions[svlan].is_override_tpid = True
    p.Extensions[svlan].tpid = 0x88a8
    p.Extensions[svlan].vlan_tag = 0x64
    p.Extensions[vlan].vlan_tag = 0xc8

Thanks,

-John