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ME3400E - Layer 2 Protocol Tunneling with VLAN Mapping

Is there any way in which Layer 2 Protocol Tunneling works using VLAN Mapping on a SW ME3400E?

 

This is the "UNI" client interface:

 

interface GigabitEthernet0/1
  switchport mode trunk
  switchport vlan mapping 5,10,20,30 dot1q-tunnel 100
  switchport vlan mapping default drop
  l2protocol-tunnel cdp
  l2protocol-tunnel lldp
  l2protocol-tunnel stp
  l2protocol-tunnel vtp
  l2protocol-tunnel elmi
  l2protocol-tunnel ptpd
  l2protocol-tunnel rb
  l2protocol-tunnel rc
  l2protocol-tunnel rd
  l2protocol-tunnel rf
end

 

But I can't get the CDP packets through from one end to the other (VLAN Mapping works fine)

 

ME3400E#show l2protocol-tunnel
COS for Encapsulated Packets: 5
Drop Threshold for Encapsulated Packets: 0

Port Protocol Shutdown Drop Encaps Decaps Drop
Threshold Threshold Counter Counter Counter
------------------- ----------- --------- --------- --------- --------- ---------
Gi0/1 cdp ---- ---- 0 0 0
lldp ---- ---- 0 0 0
stp ---- ---- 0 0 0
vtp ---- ---- 0 0 0
--- ---- ---- ---- ---- ----
--- ---- ---- ---- ---- ----
--- ---- ---- ---- ---- ----

 

ME3400E#show version | include image
System image file is "flash:me340x-metroipaccessk9-mz.122-60.EZ11.bin"
ME3400E#

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