Date: Fri, 8 Aug 2008 07:39:20 +0200 From: "Younger Wang" <Younger.Wang@packetfront.com> To: <freebsd-net@freebsd.org> Subject: (Netgraph problem) Inner tag and outer tag swapped Message-ID: <E04A1AC327C07042AB62CB2A7390E7AF0115A727@slipper.int.packetfront.com>
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Hi,
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fxp0 is connected to a trunk port. Frames tagged with VID=3D201 arrives =
at
fxp0 from a switch trunk port, I expect it will be captured at hub_QinQ,
with outer tag =3D 4000, and inner tag =3D 201. But in fact, it was =
received
with the outer and inner tags reversed.
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But if I inject the same frame on hub_c4000, the frame is received at
hub_QinQ as expected (inner tag =3D 201, outer tag =3D 4000). I am =
really
confused. Has anyone seen the same problem? Big thanks.
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Here is my netgraph setup:
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ngctl mkpeer fxp0: hub lower physical
ngctl name fxp0:lower hub_c4000
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ngctl mkpeer hub_c4000: vlan up vlan4000
ngctl name hub_c4000:up vlan_QinQ
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ngctl mkpeer vlan_QinQ: hub downstream down0
ngctl name vlan_QinQ:downstream hub_QinQ
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ngctl msg vlan_QinQ: addfilter { vlan=3D4000 hook=3D"vlan4000" }
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BR
Younger Wang
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