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

Page 27
Image 27
NEC N8406-022 manual Rapid Spanning Tree and Multiple Spanning Tree information

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.