User`s guide

14-10 Using EtherCraft
Software Release 2.30 YesWare Applications User’s Guide 08-01016-01
HDLC Port Metrics
An HDLC Metrics table is associated with each speeds table displayed for the
modem port. HDLC Metrics include a measurement on the side of the phone
link between modems. The HDLC Metrics table displays the following:
• RX Frames—number of frames (or packets) received
• RX Bytes—amount of data received in bytes
• RX Errors—number of receive errors
• RX Blocks - number of blocks received
• TX Frames—the number of frames transmitted
• Retries - number of re-transmission attempts
• Data Frames - number of data frames transmitted
• Discard Frames - number of HDLC discard frames
• Free Buffers - available storage for data to compensate for differences in
transmission speeds or timing
• Local LQF - local line quality factor on a scale of 100
• Remote LQF - remote line quality factor on a scale of 100
• Apparent Distance - estimate of distance between server (CO/SE) and
client (CPE/CE) modem to the nearest 1000 feet (displayed in Kft)
Figure 14-6 shows an example of an HDLC Metrics table.
Figure 14-6
HDLC Port Metrics table example