Cabletron Systems 1800 - Manual (Page 338)

21-12 SmartSwitch 1800 4. 0 User G uide, Rev 01
● 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.
● Bytes In/Out – is the number of bytes received/transmitted over the interface.
● 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.
● 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
● Alignment Errors – is the number of frames with FCS (frame check sequence)
errors due to non-integral lengths.
● 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.