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NEC N8406-022 manual Layer 2 statistics, Link statistics, FDB statistics, Command mode: All

Models: N8406-022

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Link statistics

Link statistics

Use the following command to display the link statistics of the selected port:

show interface gigabitethernet <port number> link-counters

Command mode: All

Link statistics for port 1:

linkStateChange:2

The following table describes the link statistics for a selected port:

Table 36 Link statistics for port

Statistic	Description
linkStateChange	The total number of link state changes.

Layer 2 statistics

The following table describes the Layer 2 statistics commands. The following sections provide more detailed information and commands.

Table 37 Layer 2 Statistics commands

Command		Usage
show	mac-address-table counters	Displays the Forwarding Database statistics.
		Command mode: All
show	layer2 counters	Displays all Layer 2 statistics.

Command mode: All

FDB statistics

Use the following command to display statistics regarding the use of the forwarding database:

show mac-address-table counters

Command mode: All

FDB statistics:

current:

91

hiwat:

91

These commands enable you to display statistics regarding the use of the forwarding database, including the number of current entries and the maximum number of entries ever recorded.

The following table describes the Forwarding Database (FDB) statistics:

Table 38	Forwarding Database statistics
Statistic	Description
current	Current number of entries in the Forwarding Database.
hiwat	Highest number of entries recorded at any given time in the Forwarding Database.

Statistics commands 46

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NEC N8406-022 manual Layer 2 statistics, Link statistics, FDB statistics, Command mode: All

Contents

N8406-0221Gb Intelligent L2 Switch Command Reference Guide ISCLILegal notices 2007 NEC Corporation Part number: First edition: JanContents Statistics commands Operations Commands Introduction Connecting to the switchISCLI Reference Additional referencesEstablishing an SSH connection Setting an IP addressEstablishing a Telnet connection telnet <1Gb Intelligent L2 Switch IP address>Accessing the switch ping <IP address> Idle timeoutTypographical conventions show portchannel <1-12>|hash|informationshow portchannel <1-12> show ip interfaceshow ip interface show portchannel hashISCLI basics Accessing the ISCLIISCLI Command Modes Introduction<max-hops><msec delay> Global commandstries> <msec delay> exit or quitCommand abbreviation Command line interface shortcutsTab completion show sys-info Information CommandsIntroduction show layer2 informationSystem Information commands SNMPv3 Information commandsCommand mode: All SNMPv3 USM User Table informationSNMPv3 View Table information Command mode: AllSNMPv3 Access Table information Command mode: AllCommand mode: All SNMPv3 Group Table informationSNMPv3 Community Table information Command mode: AllCommand mode: All SNMPv3 Target Address Table informationSNMPv3 Target Parameters Table information Command mode: AllTable SNMPv3 Notify Table informationCommand mode: All SNMPv3 Notify Table informationSNMPv3 dump show snmp-serverv3 Command mode: AllSystem information Command mode: AllSystem user information Show recent syslog messagesCommand mode: All show spanning-tree Layer 2 informationshow mac-address-table show spanning-treemstp cist informationClearing entries from the forwarding database FDB information commandsShow all FDB information address>Command mode: All Spanning Tree informationshow spanning-treestp <1-32> information Table 19 STP parameters •Status of Uplink Fast upfast Common Internal Spanning Tree information Command mode: All•Link type and port type •Port number and priority •Cost •State •Role•Designated bridge and port •Hello interval The following table describes the CIST parametersCommand mode: All Trunk group informationVLAN information Command mode: Allshow ip arp Layer 3 informationARP information show layer3 informationShow all ARP entry information IP informationARP address list information RMON Information IGMP multicast group informationIGMP multicast router port information RMON history informationshow rmon alarm RMON alarm informationCommand mode: All Command mode: All RMON event informationshow rmon event Link status information Port information show geaport Command mode: All Logical Port to GEA Port mappingUplink Failure Detection information show ufdInformation dump Command mode: AllIntroduction Statistics commandsPort Statistics <port number> ip-countersCommand mode: All Bridging statisticsEthernet statistics Command mode: Alldot3StatsInternalMacTransmitError dot3StatsAlignmentErrorsdot3StatsFCSErrors Table 33 Ethernet statistics for portTable 33 Ethernet statistics for port Interface statisticsCommand mode: All Table 34 Interface statistics for portTable 34 Interface statistics for port Internet Protocol IP statisticsCommand mode: All Table 35 IP statistics for portFDB statistics Layer 2 statisticsLink statistics Command mode: AllLayer 3 statistics IP statisticsTable 40 IP statistics ARP statisticsCommand mode: All except User EXEC Table 41 ARP statisticsCommand mode: All except User EXEC DNS statisticsICMP statistics The following command displays ICMP statisticsCommand mode: All except User EXEC TCP statisticsThe following command displays TCP statistics Table 43 ICMP statisticsCommand mode: All except User EXEC UDP statisticsThe following command displays UDP statistics Table 44 TCP statisticsManagement Processor statistics IGMP Multicast Group statisticsTCP statistics The following command displays TCP statisticsUDP statistics SNMP statistics CPU statisticsshow mp cpu Statistics Last update time: 18:04:16 Tue Mar 13, NTP statisticsLast update based on response from primary server Current system time: 18:55:49 Tue Mar 13,Statistics dump Uplink Failure Detection statisticsCommand mode: All System configuration Configuration CommandsSaving the configuration Viewing and saving changesend> System host log configurationcharacters multi-line> <’-‘to no banner <1-80characters>ssh scp-password Secure Shell Server configurationno logging log <feature> ssh scp-enablecharacters> RADIUS server configuration<IP address> key <1-32 host <IP address> key <1-32TACACS+ server configuration no ntp enable NTP server configurationntp enable no ntp prisrv <IP address><1-64characters> System SNMP configurationcharacters> <1-64characters>SNMPv3 configuration privacy-password <password> User Security Model configuration<password> snmp-serveruser <1-16>name <1-32characters> SNMPv3 View configurationView-basedAccess Control Model configuration 128><1-32> SNMPv3 Group configurationSNMPv3 Community Table configuration user-name <1-32characters><IP address> name <1-32 SNMPv3 Target Address Table configurationSNMPv3 Target Parameters Table configuration characters>Management Networks configuration SNMPv3 Notify Table configurationSystem Access configuration name <1-32characters><1-10> password <1 User Access Control configurationUser ID configuration <1-10> enableenable HTTPS Access configurationno access https access https port <TCPname <1-64characters> Port configurationTemporarily disabling a port number>number> Layer 2 configurationPort link configuration vlan <1-4095>spanning-treemstp <1-32characters>Common Internal Spanning Tree configuration CIST bridge configurationCIST port configuration enable Spanning Tree configurationspanning-treestp <1-32>enable default spanning-tree <1-32>bridge priority <0-65535> Bridge Spanning Tree configurationspanning-treestp <1-32> spanning-treestp <1-32>bridge hello-time <1-10>Spanning Tree port configuration <1-32>Static FDB configuration Forwarding Database configurationTrunk configuration address> <VLAN> <port>name <1-32characters> Layer 3 configurationVLAN configuration member <port number>ip address <IP address><IP IP interface configurationDefault Gateway configuration netmask>IGMP snooping configuration Address Resolution Protocol configurationIGMP configuration 600><1-4095> <1-2> IGMP static multicast router configurationIGMP filtering configuration number> <1-4095> <1-2>IGMP filter definition Domain Name System configurationIGMP filtering port configuration multicast address> <IP multicastRMON event configuration Remote Monitoring configurationRMON history configuration <1-127characters>limit <-2147483647to RMON alarm configurationoid <1-127characters> 2147483647>Port-basedport mirroring Uplink Failure Detection configurationPort mirroring number> mirroring-port <port number>Link to Monitor configuration Configuration DumpFailure Detection Pair configuration Link to Disable configurationSwitchconfig# copy running-configtftp Saving the active switch configurationRestoring the active switch configuration Switchconfig# copy tftp running-configIntroduction Operations CommandsOperations-levelport options <port number> shutdownDownloading new software to the switch Boot OptionsUpdating the switch software image IntroductionRouterconfig# boot image image1|image2 Uploading a software image from the switchSelecting a software image to run Switch# copy <image1|image2|boot-image>tftpResetting the switch Selecting a configuration blockAccessing the AOS CLI Forwarding Database maintenance Maintenance CommandsSystem maintenance Introductionclear flash-config ARP cache maintenanceDebugging options debug mp-traceUuencode flash dump IGMP Snooping maintenanceIGMP Mrouter maintenance address>Clearing dump information Panic commandTFTP system dump put >> Switch# debug panicUnscheduled system dumps before another dump can be savedIndex