Summary

Device > Monitor

This dialog box provides a summary of device performance information, such as the level of IP and SNMP traffic.

The dialog box displays the following data:

The following list specifies buttons in this dialog box, as well as their function:


IP Traffic

Equals the sum of ipInReceives, ipOutRequests, and ipForwDatagrams.
 
ipInReceives Total number of input datagrams received from interfaces, including those received in error.
ipOutRequests Total number of IP datagrams which local IP user protocols (including ICMP) supplied to IP in transmission requests; does not include datagrams counted in ipForwDatagrams.
ipForwDatagrams Input datagrams for which the final destination was different.


IP Errors

Equals the sum of ipInHdrErrors, ipInAddrErrors, ipInUnknownProtos, ipInDiscards, ipOutDiscards, ipOutNoRoutes, ipReasmFails, ipFragFails, and ipRoutingDiscards.
 
ipInHdrErrors Number of input datagrams discarded because of errors in their IP headers, including bad checksums, version number mismatches, format errors, time-to-live exceeded errors, and errors discovered the processing of IP options for a datagram.
ipInAddrErrors Number of input datagrams discarded because the IP address in their IP header destination field was invalid. This value includes invalid addresses and addresses of unsupported classes (for example, Class E). For entities that are not IP gateways and therefore do not forward datagrams, this value includes datagrams discarded because the destination address was not a local address.
ipInUnknownProtos Number of locally-addressed datagrams received and discarded because of an unknown or unsupported protocol.
ipInDiscards Number of input IP datagrams that can be continually processed but were discarded anyway. This value does not include any datagrams discarded while awaiting reassembly.
ipOutDiscards Number of output IP datagrams for which no problem was encountered to prevent their transmission but were discarded anyway.
ipOutNoRoutes Number of IP datagrams discarded because no route was found to transmit them through. This value includes datagrams which could not be routed because a host's default gateways are down.
ipReasmFails Number of failures detected by the IP reassembly algorithm.
ipFragFails Number of IP datagrams discarded because they needed to be fragmented but were not.
ipRoutingDiscards Number of routing entries discarded even though they are valid.


ICMP Traffic

Equals the sum of icmpInMsgs and icmpOutMsgs.
 
icmpInMsgs Total number of ICMP messages received.
icmpOutMsgs Total number of ICMP messages the entity attempted to send.


ICMP Errors

Equals the sum of icmpInErrors and icmpOutErrors.
 
icmpInErrors Number of received ICMP messages determined to have ICMP-specific errors.
icmpOutErrors Number of ICMP messages that were not sent due to problems discovered within ICMP, such as a lack of buffers. This value does not include errors discovered outside the ICMP layer, such as the inability of IP to route the resultant datagram.


UDP Traffic

Equals the sum of udpInDatagrams and udpOutDatagrams.
 
udpInDatagrams Total number of UDP datagrams delivered to UDP users.
udpOutDatagrams Total number of UDP datagrams sent from this entity.


UDP Errors

Equals the sum of udpInErrors and udpNoPorts.
 
udpInErrors Number of received UDP datagrams undelivered for reasons other than the lack of an application at the destination port.
udpNoPorts Total number of received UDP datagrams for which there was no application at the destination port.


TCP Traffic

Equals the sum of tcpInSegs, tcpOutSegs, and tcpRetransSegs.
 
tcpInSegs Total number of segments received, including those received in error. This count includes segments received on established connections.
tcpOutSegs Total number of segments sent, including those on current connections, but excluding those containing only retransmitted octets.
tcpRetransSegs Number of transmitted TCP segments containing one or more previously transmitted octets.


TCP Errors
 
tcpInErrs Total number of segments received in error (for example, bad TCP checksums).


SNMP Traffic

Equals the sum of snmpInPkts and snmpOutPkts.
 
snmpInPkts Total number of messages delivered from the transport service to the SNMP entity.
snmpOutPkts Total number of SNMP Messages passed from the SNMP protocol entity to the transport service.


SNMP Errors

Equals the sum of snmpInBadVersions, snmpInBadCommunityNames, snmpInBadCommunityUses, snmpInASNParseErrs, snmpInTooBigs, snmpOutTooBigs, snmpInNoSuchNames, snmpOutNoSuchNames, snmpInBadValues, nmpOutBadValues, snmpInReadOnlys, snmpInGenErrs, and snmpOutGenErrs.
 
snmpInBadVersions Total number of SNMP messages delivered to the SNMP entity and unsupported SNMP versions.
snmpInBadCommunityNames Total number of SNMP messages delivered to the SNMP entity that used an unknown SNMP community name.
snmpInBadCommunityUses Total number of SNMP messages delivered to the SNMP entity which represented an SNMP operation not allowed by the SNMP community named in the message.
snmpInASNParseErrs Total number of ASN.1 or BER errors encountered by the SNMP entity when it decoded received SNMP messages.
snmpInTooBigs Total number of SNMP PDUs delivered to the SNMP entity for which the value of the error-status field is tooBig.
snmpOutTooBigs Total number of SNMP PDUs generated by the SNMP entity for which the value of the error-status field is tooBig.
snmpInNoSuchNames Total number of SNMP PDUs delivered to the SNMP entity for which the value of the error-status field is noSuchName.
snmpOutNoSuchNames Total number of SNMP PDUs generated by the SNMP entity for which the value of the error-status is noSuchName.
snmpInBadValues Total number of SNMP PDUs delivered to the SNMP entity for which the value of the error-status field is badValue.
snmpOutBadValues Total number of SNMP PDUs generated by the SNMP entity for which the value of the error-status field is badValue.
snmpInReadOnlys Total number of SNMP PDUs delivered to the SNMP entity for which the value of the error-status field is readOnly.
snmpInGenErrs Total number of SNMP PDUs delivered to the SNMP entity for which the value of the error-status field is genErr.