NEC N8406-022 manual Rapid Spanning Tree and Multiple Spanning Tree information

Page 27

Table 19 STP parameters

Parameter

Description

FwdDel

The forward delay parameter specifies, in seconds, the amount of time that a bridge port has

 

to wait before it changes from learning state to forwarding state.

Aging

The aging time parameter specifies, in seconds, the amount of time the bridge waits without

 

receiving a packet from a station before removing the station from the Forwarding Database.

Priority (port)

The port priority parameter helps determine which bridge port becomes the designated port.

 

In a network topology that has multiple bridge ports connected to a single segment, the port

 

with the lowest port priority becomes the designated port for the segment.

Cost

The port path cost parameter is used to help determine the designated port for a segment.

 

Generally speaking, the faster the port, the lower the path cost.

State

The State field shows the current state of the port. The State field can be one of the

 

following: BLOCKING, LISTENING, LEARNING, FORWARDING, or DISABLED.

Designated

Shows information about the bridge connected to each port, if applicable. Information

bridge

includes the priority (hex) and MAC address of the Designated Bridge.

Designated port

The port ID of the port on the Designated Bridge to which this port is connected.

Rapid Spanning Tree and Multiple Spanning Tree information

The following command displays RSTP/MSTP information: show spanning-tree stp <1-32>information Command mode: All

------------------------------------------------------------------

upfast disabled, update 40

------------------------------------------------------------------

Spanning Tree Group 1: On (RSTP)

VLANs: 1-3 4095

Current Root:

 

Path-Cost

Port Hello MaxAge FwdDel Aging

8000 00:00:01:00:19:00

0

0

9

20

15

300

Parameters:

Priority Hello MaxAge FwdDel Aging

 

 

 

 

32768

9

20

 

15

300

 

 

Port

Prio

Cost

 

State

Role

Designated Bridge Des Port

Type

----

----

----

------

---- --------------------- --------

----

1

0

 

0

DSB

 

 

 

 

 

 

2

0

 

0

DSB

 

 

 

 

 

 

3

0

 

0

DSB

 

 

 

 

 

 

4

0

 

0

DSB

 

 

 

 

 

 

5

0

 

0

DSB

 

 

 

 

 

 

6

0

 

0

DSB

 

 

 

 

 

 

7

0

 

0

DSB

 

 

 

 

 

 

8

0

 

0

DSB

 

 

 

 

 

 

9

0

 

0

DSB

 

 

 

 

 

 

10

0

 

0

DISC

 

 

 

 

 

 

11

0

 

0

FWD

DESG 8000-00:00:01:00:19:00

8017

P2P2,Edge

12

0

 

0

FWD

DESG 8000-00:00:01:00:19:00

8018

P2P

Information Commands 27

Image 27
Contents N8406-022 1Gb Intelligent L2 Switch Page Contents Statistics commands Operations Commands Additional references Connecting to the switchIscli Reference IntroductionEstablishing an SSH connection Setting an IP addressTelnet 1Gb Intelligent L2 Switch IP address Establishing a Telnet connection# ssh user@1Gb Intelligent L2 Switch IP address Accessing the switchShow portchannel 1-12hashinformation Idle timeoutTypographical conventions Ping IP addressShow spanning-tree stp Show ip interfaceAccessing the Iscli Iscli Command ModesIscli basics Global commands Switchconfig# sp stp 1 br h Command line interface shortcutsCommand abbreviation Switchconfig# spanning-tree stp 1 bridge helloInformation Commands SNMPv3 Information commands System Information commandsProtocol SNMPv3 USM User Table informationSNMPv3 View Table information User NamePrefix SNMPv3 Access Table informationView Name Group NameIndex Name User Name Tag Trap1 Public V1v2only V1v2trap SNMPv3 Group Table informationSNMPv3 Community Table information Sec ModelSNMPv3 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 bridge128 2000 Common Internal Spanning Tree informationDesg 8000-000342fa3b80 8001 P2P, Edge 128 2000 Desg 8000-000342fa3b80 8002 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 informationARP address list information Show layer3 information Command mode AllIP information Show all ARP entry informationRmon history information Igmp multicast group informationIgmp multicast router port information Rmon 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 statisticsDot3StatsSingleCollisionFrames Dot3StatsAlignmentErrorsDot3StatsFCSErrors Dot3StatsInternalMacTransmitErrorInterface statistics Show interface gigabitethernet port number ip-counters Internet Protocol IP statisticsShow interface gigabitethernet port number link-counters Layer 2 statisticsLink statistics FDB statisticsIP statistics Layer 3 statisticsARP statistics ArpEntriesCur ArpEntriesHighWater ARP statisticsDNS statistics Icmp statisticsDNS statistics DnsInRequests DnsOutRequests DnsBadRequests TCP statistics UDP statistics Show mp udp-block Management Processor statisticsIgmp Multicast Group statistics Show mp tcp-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 statisticsViewing and saving changes Configuration CommandsSaving the configuration System configurationSystem host log configuration Secure Shell Server configuration Radius server configuration TACACS+ server configuration NTP server configuration System Snmp configuration SNMPv3 configuration No snmp-server user User Security Model configurationPrivacy-password password Privacy-protocol desnoneView-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 configurationName Spanning-tree mrst ModeSpanning-tree mrst Enable Spanning-tree mstpCist 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 Link to Disable configuration Configuration DumpFailure Detection Pair configuration Link to Monitor configurationRestoring the active switch configuration Saving the active switch configurationOperations-level port options Operations CommandsRouter# copy tftp image1image2boot-image Boot OptionsUpdating the switch software image Downloading new software to the switchSelecting a software image to run Uploading a software image from the switchRouterconfig# boot image image1image2 Switch# copy image1image2boot-image tftpSelecting 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 Tftp system dump put Panic commandSwitch# copy flash-dump tftp server filename Switch# clear flash-dumpUnscheduled 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.