SAF FreeMile Series, Руководство пользователя

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The SAF FreeMile Series Full Outdoor Unit Technical Description and Configuration Guide • Rev. 1.3
© SAF Tehnika JSC 2012
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1. Shows time period during which statistics have been gathered;
2. Modem state – shows if the modem is operating correctly;
3. Clear statistics – resets all statistics counters (not available for “guest” account);
4. Truncated frames – number of truncated received frames;
5. Long events – frames having byte count greater than MAXIMUM FRAME SIZE parameter
(1518, 1536 or 1916 bytes);
6. Vlan tags detected – VLAN tagged frames;
7. Unsup. opcodes – frames recognized as control frames but contained an Unknown
Opcode;
8. Pause frames – frames received are control frames with valid PAUSE opcodes;
9. Control frames – frames received as control frames;
10. Dribble nibbles – indicates that following the end of the packet additional 1 to 7 bits are
received. A single nibble, named the dribble nibble, is formed but not sent to the system;
11. Broadcasts – packets, which destination address contained broadcast address;
12. Multicasts – packets, which destination address contained multicast address;
13. Dones – reception of packets successfully completed;
14. Jumbo frames – frame Type/Length field larger than 1518 (Type Field) bytes;
15. Length check errors – frame length field in the packet does not match the actual data byte
length and is not a Type Field;
16. CRC errors – frame CRC do not match the internally generated CRC;
17. Code errors – one or more nibbles are signalled as errors during reception of the packet;
18. False carrier errors – indicates that following the last received statistics vector, a false
carrier was detected, noted and reported with next received statistics. The false carrier is
not associated with this packet. False carrier is activated on the receiving channel that
does not result in a packet receive attempt being made;
19. Rx Dv event – indicates that the last receiving event seen is too short to be a valid packet;
20. Prev. pkt dropped – indicates that since the last RSV, a packet is dropped (i.e. interframe
gap too small);
21. Byte counter – total number of bytes received on the wire, not counting collided bytes;
22. FCS errors – number of generic framing procedure (GFP) frames with CRC errors received
by the de ‐ encapsulation block;
23. CHEC errors – number of generic framing procedure (GFP) frames with CHEC errors
received by the de ‐ encapsulation block;
24. Dropped frames – number of generic framing procedure (GFP) frames that were dropped
in the de ‐ encapsulation block;
25. Delineation errors – number of ‘lost of synchronization’ events;
26. Vlan tags – number of VLAN tagged packets, 32 ‐ bit counter;
27. Backpres. events – carrier ‐ sense ‐ method backpressure was previously applied;
28. Pause frames – frames transmitted are control frames with a valid PAUSE opcodes;
29. Control frames – frames transmitted are control frames;
30. Wire byte counter – total number of bytes transmitted on the wire, including all bytes from
collided attempts;
31. Underruns – underruns occur during frame transmission;
32. Giants – frames having byte count greater than the MAXIMUM FRAME SIZE parameter
(1516, 1536 or 1916 bytes);
33. Late collisions – Collisions occurred beyond the collision window (512 bit times);
34. Max collisions – packets aborted after number of collisions exceeded the
RETRANSMISSION MAXIMUM parameter;
35. Excessive defers – packets deferred in excess of 6,071 nibble times in 100 Mbps mode, or
24,287 bit ‐ times in 10 Mbps mode;