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Section 4 User Interface Guide Total Access 600 Series System Manual
134 © 2004 ADTRAN, Inc. 61200624L1-1B
IP D
ATAGRAMS
R
ECEIVED
The total number of input datagrams received from interfaces, including those received in error.
B
AD
H
EADER
P
ACKETS
The number of input datagrams discarded due to errors in their IP headers, including bad check sums,
version number mismatch, other format errors, time-to-live exceeded, errors discovered in
processing their IP options, etc.
B
AD
IP A
DDRESSES
The number of input datagrams discarded because the IP address in their IP header's destination field
was not a valid address to be received at this unit. This count includes invalid addresses (e.g., 0.0.0.0)
and addresses of unsupported Classes (e.g., Class E). For entities which are not IP Gateways and
therefore do not forward datagrams, this counter includes datagrams discarded because the
destination address was not a local address.
T
OTAL
F
ORWARDED
D
ATAGRAMS
The number of input datagrams for which this unit was not their final IP destination, as a result of
which an attempt was made to find a route to forward them to that final destination. In entities which
do not act as IP Gateways, this counter will include only those packets which were Source-Routed
via this unit, and the Source-Route option processing was successful.
B
AD
P
ROTOCOL
D
ISCARDS
The number of locally-addressed datagrams received successfully but discarded because of an
unknown or unsupported protocol.
D
ATAGRAMS
D
ISCARDED
The number of input IP datagrams for which no problems were encountered to prevent their
continued processing, but which were discarded (e.g., for lack of buffer space). Note that this counter
does not include any datagrams discarded while awaiting re-assembly.
S
ENT
D
ATAGRAMS
TO
U
PPER
L
AYERS
The total number of input datagrams successfully delivered to IP user-protocols (including ICMP).
IP D
ATAGRAMS
S
ENT
IP packets from the unit's IP stack.
E
RRORFREE
D
ISCARDS
The number of output IP datagrams for which no problem was encountered to prevent their
transmission to their destination, but which were discarded (e.g., for lack of buffer space). Note that
this counter would include datagrams counted in
T
OTAL
F
ORWARDED
D
ATAGRAMS
if any such packets
met this (discretionary) discard criterion.