Picking up Undersize errors on 3750 12.2.37 ports connected to Nortel phones. Counters increment periodically. Not sure if this is a cosmetic errors or the Nortel phone really sending out short packets or possibly sending out untagged packets on the port which is trunked for voice and data. Is it keepalive or proprietary traffic? No CRC or any problems but just annoying and would like to identify it.
Anyone run into this.