[PWE3] Question on draft-ietf-pwe3-enet-mib-07.txt

["Zheng Wang" <zwang at broadcom.com>]

I have a question for the following counter.  
 
pwEnetStatsIllegalVlan  OBJECT-TYPE  
      SYNTAX     ZeroBasedCounter32  
      MAX-ACCESS  read-only  
      STATUS     current  
      DESCRIPTION   
          "The number of packets received (from the PSN) on this PW   
           with an illegal VLAN field, missing VLAN field that was   
           expected, or A VLAN field when it was not expected. This   
           counter may not be applicable in some case,  and MUST  
           return the value of zero in this case."  
      ::= { pwEnetStatsEntry 1 }

1) Are you talking about the VLAN in the customer Ethernet (payload of
PW)? Assuming this is the case, when an Ethernet PW packet is received
from PSN, how do you determine whether a VLAN is illegal?  

2) Do you need a counter on the customer facing side (CE-PE) to counter
the illegal VLAN (e.g., service-delimiting tag in a raw mode)
 
Cheers
Zheng


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