NEC N8406-022 manual Layer 3 statistics, IP statistics

Layer 3 statistics

The following table describes basic Layer 3 statistics commands. The following sections provide more detailed information and commands. Layer 3 functionality is limited in this release.

Table 39 Layer 3 Statistics commands

Command	Usage
show ip counters	Displays IP statistics.
	Command mode: All except UserEXEC
clear ip counters	Clears IP statistics. Use this command with caution as it deletes
	all the IP statistics.
	Command mode: All except UserEXEC
show ip arp counters	Displays Address Resolution Protocol (ARP) statistics.
	Command mode: All except UserEXEC
show ip dns counters	Displays Domain Name System (DNS) statistics.
	Command mode: All except UserEXEC
show ip icmp counters	Displays ICMP statistics.
	Command mode: All except UserEXEC
show ip tcp counters	Displays Transmission Control Protocol (TCP) statistics.
	Command mode: All except UserEXEC
show ip udp counters	Displays User Datagram Protocol (UDP) statistics. Add the
	argument, clear, to clear UDP statistics.
	Command mode: All except UserEXEC
show ip igmp counters	Displays IGMP statistics.
	Command mode: All except UserEXEC
clear ip igmp [<1-4095>] counters	Clears all IGMP statistics for the selected VLANs.
	Command mode: All above Priv EXEC
show layer3 counters	Displays all Layer 3 statistics.
	Command mode: All except UserEXEC

IP statistics

The following command displays IP statistics: show ip counters

Command mode: All except User EXEC

IP statistics:
ipInReceives: 36475	ipInHdrErrors: 0
ipInAddrErrors: 905
ipInUnknownProtos: 0	ipInDiscards: 0
ipInDelivers: 4103	ipOutRequests: 30974
ipOutDiscards: 0
ipDefaultTTL: 255

The following table describes the IP statistics:

Table 40 IP statistics

Statistics	Description
ipInReceives	The total number of input datagrams received from interfaces, including those
	received in error.
ipInHdrErrors	The number of input datagrams discarded due to errors in their IP headers, including
	bad checksums, version number mismatch, other format errors, time-to-live exceeded,
	errors discovered in processing their IP options, and so on.
ipInAddrErrors	The number of input datagrams discarded because the IP address in their IP header
	destination field was not a valid address to be received at this switch. This count
	includes invalid addresses (for example, 0.0.0.0) and addresses of unsupported
	classes (for example, 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.
ipInUnknownProtos	The number of locally addressed datagrams received successfully but discarded
	because of an unknown or unsupported protocol.

Statistics commands 47