S-Series / K-Series / 7100-Series - Why am I getting In Discards on my Tunnel Bridge Port (tbp)?
Why am I getting In Discards on my Tunnel Bridge Port (tbp)?
All firmware versions
A tunnel bridge port will drop certain control frames that would otherwise not be dropped on a physical port. Engineering states this should have no impact and it is FAD.
If you are seeing a very large number of In Discards incrementing on the TBP port (tens of packets per second), there may be something else going on. A "debug packet filter" can help identify what packets are being dropped.