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21-12 SmartSwitch 1800 4.0 User Guide, Rev 01
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Packet Filters
– (set in commands from the protocol) specifies the types of
packets that can be received on this interface (more than one category can be
specified:
◆
Directed and Multicast
or
Group and Fuctional
◆
Broadcast
◆
Promiscuous
(any packet on the LAN)
◆
Any Source Packet
(any source routing packet on the LAN)
●
Packets In/Out
– is the number of packets received/transmitted over the
interface.
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Bytes In/Out
– is the number of bytes received/transmitted over the interface.
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Multi-Cast In/Out
– is the number of packets received/transmitted via a multicast
address over the interface.
●
Broadcast In/Out
– is the number of packets received/transmitted via a broadcast
address over the interface.
●
Frm Dropped In/Out
– is the number of incoming/outgoing frames that were
dropped.
●
Q Dropped In
– is the number of incoming Q-packets that were dropped.
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Dropped Timeout
– is the number of transmitted frames that did not return due
to a timeout or reception of another frame.
●
Errors In
– is the number of errors received over the interface.
Ethernet-Specific Statistics
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Alignment Errors
– is the number of frames with FCS (frame check sequence)
errors due to non-integral lengths.
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Xmt w/1 Coll
– is the number of frames that were transmitted after one collision
(with a frame transmitted from another node).
●
Overrun Errors
– is the number of frames that were not accepted due to DMA
(direct memory access) overrun errors.
●
Xmt w/mul Coll
– is the number of frames that were transmitted after multiple
collisions.
●
Xmt/Deferral
– is the number of frames that were held up due to traffic from other
directions, then transmitted later.
●
Xmt CD Heartbeat
– is the number of frames that were transmitted containing a
CD (collision detection) signal.
●
Not Xmt (Coll)
– is the number of frames that were not transmitted due to colli-
sions.
●
Frm w/lost CS
– is the number of frames that experienced a loss of the CS (carrier
sense) signal at the receiving node.
●
Late Collisions
– is the number of transmitted frames that were involved in col-
lisions while outside the flow control window.
●
Underruns
– is the number of frames that were not accepted due to DMA (direct
memory access) underrun errors.