we are using a WS-C3750-48TS as a transparent switch for multiple separated networks. Now the switch shall also forward incoming LLDP frames to the appropriate egress ports. Therefore i have added the command "l2protocol-tunnel lldp" to each interface, where this feature is needed. So my configuration looks like (excerpt):
I have tested this setup with SW version c3750-ipbasek9-mz.122-55.SE8 and c3750-ipbasek9-mz.122-55.SE9. The result was that no incoming LLDP frames have been counted by the switch (checked with "show l2protocol-tunnel") and also no LLDP frames have been forwarded. As a countercheck i have done the same procedure with STP (l2protocol-tunnel stp) and CDP (l2protocol-tunnel cdp), which was successful. So in principial the L2 tunneling is working but not for LLDP. Do i need to add something in addition in the configuration? Or is there a SW version which is known to work correctly? Or is this not fully implemented since LLDP tunneling is not explicitly mentioned in user manual?
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