Cabletron Systems 1800 - Manual (Page 342)

21-16 SmartSwitch 1800 4. 0 User G uide, Rev 01
CURR is the current value, and CUMULATIVE 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 Short – 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 number of old version ICMP datagrams received.
● Bad Pkt Length – is the number of ICMP datagrams received with a length too
short for the given ICMP message type.
● Bad ICMP Code – 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 ICMP echo request dat-
agrams, which are sent by other entities in the IP network as a means of con-
firming that communication is possible.
● In Echo Reply – is the number of incoming ICMP echo responses, sent by other
entities in the IP network in response to echo requests (see " Out Echo ") from this
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 running, or fragmentation was necessary but disallowed
(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 redirected within the same network. The message 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
respond, as a means of confirming that communication is possible.
● 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 transmitted datagrams that 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.