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Archived from groups: comp.dcom.lans.ethernet (More info?)
Hi All,
I have Following ambiguity regarding VLAN functionality, your answer
will be really great helpful to me.
Actually, I am working on the ethernet switch which supports Packet
classification engine.
Packet classification engine support VLAN-id assignment via
-programming specific pattern in the rule table.
I mean to say packet classification engine parses L2 header and L3
header, if parser out put matches with program pattern, it assign
specific vlan-id (vlan-id is also programmable).
I have observed that packet classification engine assign new VLAN-ID to
incoming frame (if parser output matches with program pattern) even
though it is already VLAN-TAG frame.
As per standard 802.1Q ,I understood that packet classification must
not assign new VLAN-ID based on packet classification engine if
incoming frame is already vlan-tagged frame, I am right ? or not.
Please add your point, it would be really great support to me.
Thanks in advance
Dilip
Hi All,
I have Following ambiguity regarding VLAN functionality, your answer
will be really great helpful to me.
Actually, I am working on the ethernet switch which supports Packet
classification engine.
Packet classification engine support VLAN-id assignment via
-programming specific pattern in the rule table.
I mean to say packet classification engine parses L2 header and L3
header, if parser out put matches with program pattern, it assign
specific vlan-id (vlan-id is also programmable).
I have observed that packet classification engine assign new VLAN-ID to
incoming frame (if parser output matches with program pattern) even
though it is already VLAN-TAG frame.
As per standard 802.1Q ,I understood that packet classification must
not assign new VLAN-ID based on packet classification engine if
incoming frame is already vlan-tagged frame, I am right ? or not.
Please add your point, it would be really great support to me.
Thanks in advance
Dilip