NEC N8406-022 manual Uplink Failure Detection statistics, Statistics dump

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The following table describes the NTP statistics:

Table 52 NTP statistics

Statistics

Description

Primary Server

Requests Sent: The total number of NTP requests the switch sent to the primary

 

NTP server to synchronize time.

 

Responses Received: The total number of NTP responses received from the

 

primary NTP server.

 

Updates: The total number of times the switch updated its time based on the NTP

 

responses received from the primary NTP server.

Secondary Server

Requests Sent: The total number of NTP requests the switch sent to the

 

secondary NTP server to synchronize time.

 

Responses Received: The total number of NTP responses received from the

 

secondary NTP server.

 

Updates: The total number of times the switch updated its time based on the NTP

 

responses received from the secondary NTP server.

Last update based on

Last update of time on the switch based on either primary or secondary NTP

response from primary

response received.

server

 

Last update time

The time stamp showing the time when the switch was last updated.

Current system time

The switch system time when the command show ntp counters was

 

issued.

Uplink Failure Detection statistics

The following command allows you to display Uplink Failure Detection (UFD) statistics.

show ufd counters

Command mode: All

Uplink Failure Detection statistics:

Number of times LtM link failure: 1

Number of times LtM link in Blocking State: 0

Number of times LtD got auto disabled: 1

The following table describes the Uplink Failure Detection (UFD) statistics:

Table 53 Uplink Failure Detection statistics

Statistic

Description

Number of times LtM link failure

The total numbers of times that link failures were detected on the

 

uplink ports in the Link to Monitor group.

Number of times LtM link in

The total number of times that Spanning Tree Blocking state was

Blocking State

detected on the uplink ports in the Link to Monitor group.

Number of times LtD got auto

The total numbers of times that downlink ports in the Link to

disabled

Disable group were automatically disabled because of a failure in

 

the Link to Monitor group.

Statistics dump

The following command dumps the switch statistics:

show counters

Use the dump command to dump all switch statistics available (40K or more, depending on your configuration). This data can be used to tune or debug switch performance.

If you want to capture dump data to a file, set your communication software on your workstation to capture session data prior to issuing the dump commands.

Statistics commands 57

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Contents N8406-022 1Gb Intelligent L2 Switch Page Contents Statistics commands Operations Commands Iscli Reference Connecting to the switchIntroduction Additional referencesTelnet 1Gb Intelligent L2 Switch IP address Setting an IP addressEstablishing a Telnet connection Establishing an SSH connection# ssh user@1Gb Intelligent L2 Switch IP address Accessing the switchTypographical conventions Idle timeoutPing IP address Show portchannel 1-12hashinformationShow spanning-tree stp Show ip interfaceAccessing the Iscli Iscli Command ModesIscli basics Global commands Command abbreviation Command line interface shortcutsSwitchconfig# spanning-tree stp 1 bridge hello Switchconfig# sp stp 1 br hInformation Commands SNMPv3 Information commands System Information commandsSNMPv3 View Table information SNMPv3 USM User Table informationUser Name ProtocolView Name SNMPv3 Access Table informationGroup Name PrefixSNMPv3 Community Table information SNMPv3 Group Table informationSec Model Index Name User Name Tag Trap1 Public V1v2only V1v2trapSNMPv3 Target Address Table information SNMPv3 Target Parameters Table informationSec Level NameTag V1v2trapv1v2trap SNMPv3 Notify Table informationSNMPv3 dump Show snmp-server v3 Command mode AllSystem information Usernames Enabled Oper Disabled Admin Always Enabled Show recent syslog messagesSystem user information Layer 2 information Show all FDB information FDB information commandsShow spanning-tree stp 1-32information Spanning Tree informationRapid Spanning Tree and Multiple Spanning Tree information Designated bridge Priority bridgeDesg 8000-000342fa3b80 8001 P2P, Edge 128 2000 Common Internal Spanning Tree informationDesg 8000-000342fa3b80 8002 128 2000 128 2000Disabled DSB Cist RootDiscarding DISC, Learning LRN, Forwarding FWD, or Trunk group 1, Enabled port state STG 1 forwarding Trunk group informationVlan information ARP information Layer 3 informationIP information Show layer3 information Command mode AllShow all ARP entry information ARP address list informationIgmp multicast router port information Igmp multicast group informationRmon Information Rmon history informationRmon alarm information Show rmon alarmInterval Show rmon event Rmon event informationLink status information Port information Port Tag Rmon PvidVLANs Show geaport Command mode All Logical Port to GEA Port mappingUplink Failure Detection information Information dump Port Statistics Statistics commandsEthernet statistics Bridging statisticsDot3StatsFCSErrors Dot3StatsAlignmentErrorsDot3StatsInternalMacTransmitError Dot3StatsSingleCollisionFramesInterface statistics Show interface gigabitethernet port number ip-counters Internet Protocol IP statisticsLink statistics Layer 2 statisticsFDB statistics Show interface gigabitethernet port number link-countersIP statistics Layer 3 statisticsARP statistics ArpEntriesCur ArpEntriesHighWater ARP statisticsDNS statistics Icmp statisticsDNS statistics DnsInRequests DnsOutRequests DnsBadRequests TCP statistics UDP statistics Igmp Multicast Group statistics Management Processor statisticsShow mp tcp-block Show mp udp-block10ad41e8/10ad5790 All UDP allocated control blocks Listen161 Show snmp-server counters Command mode All except User Exec CPU statisticsSnmp statistics Decoding Snmp messages received NTP statistics Show ntp counters Command mode AllStatistics dump Uplink Failure Detection statisticsSaving the configuration Configuration CommandsSystem configuration Viewing and saving changesSystem host log configuration Secure Shell Server configuration Radius server configuration TACACS+ server configuration NTP server configuration System Snmp configuration SNMPv3 configuration Privacy-password password User Security Model configurationPrivacy-protocol desnone No snmp-server userView-based Access Control Model configuration SNMPv3 View configurationSNMPv3 Community Table configuration SNMPv3 Group configurationSNMPv3 Target Parameters Table configuration SNMPv3 Target Address Table configurationSNMPv3 Notify Table configuration System Access configurationManagement Networks configuration User ID configuration User Access Control configurationHttps Access configuration Temporarily disabling a port Port configurationPort link configuration Layer 2 configurationSpanning-tree mrst Enable Spanning-tree mrst ModeSpanning-tree mstp NameCist bridge configuration Common Internal Spanning Tree configurationCist port configuration Spanning Tree configuration Bridge Spanning Tree configuration Spanning Tree port configuration Forwarding Database configuration Trunk configurationStatic FDB configuration Vlan configuration Layer 3 configurationDefault Gateway configuration IP interface configurationAddress Resolution Protocol configuration Igmp configurationIgmp snooping configuration Igmp filtering configuration Igmp static multicast router configurationDomain Name System configuration Igmp filtering port configurationIgmp filter definition Remote Monitoring configuration Rmon history configurationRmon event configuration Rmon alarm configuration Uplink Failure Detection configuration Port mirroringPort-based port mirroring Failure Detection Pair configuration Configuration DumpLink to Monitor configuration Link to Disable configurationRestoring the active switch configuration Saving the active switch configurationOperations-level port options Operations CommandsUpdating the switch software image Boot OptionsDownloading new software to the switch Router# copy tftp image1image2boot-imageRouterconfig# boot image image1image2 Uploading a software image from the switchSwitch# copy image1image2boot-image tftp Selecting a software image to runSelecting a configuration block Resetting the switchAccessing the AOS CLI Maintenance Commands System maintenanceForwarding Database maintenance Debugging options ARP cache maintenanceIgmp Snooping maintenance Igmp Mrouter maintenanceUuencode flash dump Switch# copy flash-dump tftp server filename Panic commandSwitch# clear flash-dump Tftp system dump putUnscheduled system dumps Index
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N8406-022 specifications

The NEC N8406-022 is a robust and versatile networking device designed primarily for organizations requiring high-performance connectivity solutions. As part of NEC's extensive portfolio of networking equipment, the N8406-022 is engineered to address the demands of modern enterprise environments, ensuring seamless communication and data processing capabilities.

One of the key features of the N8406-022 is its multi-layer switching functionality. This device supports Layer 2 and Layer 3 switching, allowing for efficient data routing and reducing latency within local area networks (LANs). This capability is particularly beneficial for businesses that rely on real-time data access and transfer, such as those in financial services, media, and telecommunications.

The N8406-022 is equipped with advanced Quality of Service (QoS) features that help prioritize critical network traffic. This means that voice and video data packets can be given precedence over less time-sensitive information, ensuring that essential communication remains clear and uninterrupted. This is crucial for organizations leveraging VoIP and video conferencing solutions.

In terms of connectivity, the NEC N8406-022 offers a variety of ports, including multiple Gigabit Ethernet ports, which facilitate high-speed data transfer and enable seamless integration into existing network infrastructures. The device may also include 10 Gigabit SFP+ ports, providing the flexibility for high-capacity uplinks to support bandwidth-intensive applications and storage solutions.

Security is another focal point of the NEC N8406-022, with integrated features such as VLAN support, access control lists (ACLs), and port security measures. These capabilities protect sensitive data from unauthorized access and ensure that only legitimate users and devices can connect to the network.

Moreover, the N8406-022 often incorporates advanced energy-efficient technologies that minimize power consumption without compromising performance. This not only contributes to operational cost savings but also supports organizations in their sustainability efforts.

With its combination of performance, security, and energy efficiency, the NEC N8406-022 stands out as a reliable networking solution suitable for a wide range of enterprises looking to enhance their connectivity and operational efficiency. Whether deployed in data centers or as part of a corporate network, this device is built to meet the evolving demands of today’s digital landscape.