# 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:

- IP Traffic
- IP Errors
- ICMP Traffic
- ICMP Errors
- UDP Traffic
- UDP Errors
- TCP Traffic
- TCP Errors
- SNMP Traffic
- SNMP Errors

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

- To specify the refresh rate for this dialog box, select a value from the drop-down box.
- Click Start/Stop to begin/end device monitoring.

  Note: The Start/Stop toggle feature is supported by CiscoView 5.3 and later.

- Click Cancel to close the dialog box.
- Click Print to print the contents of the dialog box.
- Click Help to access online help.

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.