21-16 Sm artSwit ch 1800 4.0 U ser Gui de, Rev 01
CURR
is the current value, and CUMULA TIVE is the total since the last IPL
of the node.
Information in this Display:
●ICMP Errors – is the number of ICMP packets generated by this node.
●Pkt Too Short – is the number of datagrams received with a length shorter than
that specified in the header, or shorter than the ICMP minimum length.
●Old Too S ho rt – is the number of old version ICMP datagrams that were too
short.
●Bad Checksums – is the number of ICMP messages received with a bad
checksum.
●Old ICMP – is the nu mber of old ver sion IC MP data grams r eceive d.
●Bad Pkt Length – is the number of ICMP datagrams received with a length too
short for the given ICMP message type.
●Bad ICMP Co de – is the number of ICMP datagrams received with a bad code
(which identifies parameters for the control message).
●Responses Cnt – is the total number of responses from this node to echoes and
requests for timestamps, information, and address masks (all described later).
●Out Echo Reply – is the number of outgoing responses to IC MP echo request dat-
agrams, which are sent by other entities in the IP network as a means of con-
firming that co mmunication is possib le.
●In Echo Reply – is the numb er of inco ming IC MP echo respon ses, se nt by othe r
entities in the IP network in response to echo requests (see "Out Echo") from t his
node.
●Out/In Dest Unrech – is the number of outgoing datagrams that could not be
delivered because the destination device/network was not reachable, a nec-
essary protocol was not run ning, or fr agmentatio n was n eces sary but d isa llowed
(due to the "don't frag" flag being set). The message text says Outgoing if this
node is a point in the path of the datagram, and Incoming if the datagram origi-
nated at this node.
●Out/In Pkt Lost – is the number of datagrams transmitted by this node that sub-
sequently were lost. The message text says Outgoing if this node is a point in the
path of the datagram, and Incoming if the datagram originated at this node.
●Out/In Redirect – is the number of datagrams transmitted by this node that sub-
sequently were r edirected within the s ame network. The messag e text says Out-
going if this node is a point in the path of the datagram, and Incoming if the
datagram originated at this node.
●Out Echo – is the number of requests to other entities in the IP network to
resp on d, as a m eans of c onfir m ing tha t commu nicat i on is po ssibl e .
●In Echo – is the number of requests from other entities in the IP network to
respond to those entities, as a means of confirming that communication is pos-
sible.
●Out/In Time Exceed – is the number of tr ansmitted datagrams th at subsequently
were discarded by a router due to expiration of the datagram's "time to live," or
by a destination host due to inability to reassemble the datagram within the nec-
essary time period. The message text says Outgoing if this node is a point in the
path of the datagram, and Incoming if the datagram originated at this node.