SPANNING TREE COMMANDS

•For a description of the items displayed under “Spanning-tree information,” see “Configuring Global Settings” on page 3 -130.For a description of the items displayed for specific interfaces, see “Displaying Interface Settings” on page 3 -134.

Example

Console#show spanning-tree Spanning-tree information

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

Spanning tree mode:

RSTP

Spanning tree enabled/disabled:

enabled

Priority:

 

40960

Bridge Hello

Time (sec.):

2

Bridge Max Age (sec.):

20

Bridge Forward Delay (sec.):

15

Root Hello Time (sec.):

2

Root Max Age

(sec.):

20

Root Forward

Delay (sec.):

15

Designated Root:

32768.0.0000ABCD0000

Current root

port:

1

Current root

cost:

50000

Number of topology changes:

5

Last topology changes time (sec.):226

Transmission

limit:

3

Path Cost Method:

long

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

Eth 1/ 1 information

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

Admin status:

enabled

Role:

root

State:

forwarding

Path cost:

100000

Priority:

128

Designated cost:

200000

Designated port:

128.24

Designated root:

32768.0.0000ABCD0000

Designated bridge:

32768.0.0030F1552000

Fast forwarding:

enabled

Forward transitions:

1

Admin edge port:

enabled

Oper edge port:

disabled

Admin Link type:

auto

Oper Link type:

point-to-point

Spanning Tree Status: enabled

.

.

.

Console#

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SMC6752AL2 specifications

The SMC Networks SMC6752AL2 is a robust and versatile gigabit Ethernet switch designed to cater to the demands of medium to large enterprise networks. This switch delivers an impressive combination of performance, flexibility, and manageability, making it an ideal solution for businesses seeking to enhance their network infrastructure.

One of the standout features of the SMC6752AL2 is its 48 Gigabit Ethernet ports, allowing for high-speed network connections to a variety of devices such as servers, workstations, and other networked equipment. Additionally, the switch includes 4 SFP (Small Form-factor Pluggable) slots that provide options for connecting to other networking devices via fiber optics, enhancing the versatility of the network configuration.

The SMC6752AL2 supports advanced Layer 2 switching capabilities, which are crucial for efficient data handling and traffic management. With features such as VLAN (Virtual Local Area Network) support, the switch can segment network traffic to improve performance and security while effectively managing broadcast domains. It supports 802.1Q VLAN tagging, allowing for better network segmentation and isolation of different types of traffic.

Moreover, the switch is equipped with Quality of Service (QoS) features to prioritize critical data transmissions. This is essential for applications requiring real-time data flow, such as VoIP (Voice over Internet Protocol) and video conferencing. The SMC6752AL2's QoS capabilities enable users to classify and prioritize traffic, ensuring a smooth and seamless experience for bandwidth-intensive applications.

The SMC6752AL2 also includes features such as port mirroring and link aggregation, enhancing the monitoring and management capabilities of the network. Port mirroring allows administrators to duplicate traffic from one port to another for analysis and troubleshooting, while link aggregation enables combining multiple connections for increased bandwidth and redundancy.

In terms of security, the switch supports802.1X port-based authentication, providing a layer of network access control that ensures only authorized users can connect. This feature, combined with the ability to create access control lists (ACLs), helps to safeguard the network against unauthorized access and other potential threats.

Overall, the SMC Networks SMC6752AL2 is a feature-rich Ethernet switch that offers reliable performance and advanced capabilities for managing enterprise networks. Its combination of port density, layer 2 switching features, QoS functionalities, and enhanced security makes it an excellent choice for organizations looking to expand or upgrade their networking solutions. With the SMC6752AL2, businesses can maintain high-performance connectivity and effective network management tailored to their specific operational needs.
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