The switch software uses the IEEE 802.1d Spanning Tree Protocol (STP). If RSTP/MSTP is turned on, see the “Rapid Spanning Tree information” section for Spanning Tree Group information. In addition to seeing if STP is enabled or disabled, you can view the following STP bridge information:

•Status of Uplink Fast (upfast)

•Current root MAC address

•Path-Cost

•Port

•Hello interval

•Maximum age value

•Forwarding delay

•Aging time

You can also refer to the following port-specific STP information:

•Port number and priority

•Cost

•State

•Port Fast Forwarding state

•Designated bridge

•Designated port

The following table describes the STP parameters.

Table 22 STP parameters

Parameter

Description

 

 

 

Current Root

Shows information about the root bridge for the Spanning Tree. Information includes the

 

priority (hex) and MAC address of the root.

 

 

 

Path-Cost

Path-cost is the total path cost to the root bridge. It is the summation of the path cost

 

between bridges (up to the root bridge).

 

 

 

Port

The current root port refers to the port on the switch that receives data from the current

 

root. Zero (0) indicates the root bridge of the STP.

 

 

 

Priority (bridge)

The bridge priority parameter controls which bridge on the network will become the STP

 

root bridge.

 

 

 

Hello

The hello time parameter specifies, in seconds, how often the root bridge transmits a

 

configuration bridge protocol data unit (BPDU). Any bridge that is not the root bridge

 

uses the root bridge hello value.

 

 

 

MaxAge

The maximum age parameter specifies, in seconds, the maximum time the bridge waits

 

without receiving a configuration bridge protocol data unit before it reconfigures the STP

 

network. If the bridge is not the root bridge, it uses the MaxAge value of the root bridge.

 

 

 

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. If the bridge is not

 

the root bridge, it uses the FwdDel value of the root bridge.

 

 

 

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 bridge

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

 

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

 

 

 

 

Information Menu 38

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HP GbE2c manual Current Root, Path-Cost, Priority bridge, Hello, MaxAge, FwdDel, Aging, Priority port, Designated bridge
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GbE2c specifications

The HP GbE2c is a high-performance Ethernet Switch designed to meet the increasing demands of data center environments. As a critical component in Hewlett-Packard's networking lineup, the GbE2c provides a seamless blend of speed, reliability, and advanced networking capabilities, making it an essential tool for enterprises aiming to enhance their network infrastructure.

One of the standout features of the HP GbE2c is its support for Gigabit Ethernet, which allows for high-speed data transmission and reduced latency. This switch is designed to support the growing bandwidth needs of modern applications, ensuring that data is transmitted quickly and efficiently across the network. The GbE2c is particularly beneficial for organizations implementing virtualization technologies, as its Gigabit interfaces help in optimizing data flow between virtual machines.

The GbE2c also incorporates advanced Layer 2 and Layer 3 switching capabilities. This ensures that it can handle both basic and more complex networking tasks, such as routing traffic between different VLANs and enabling Internet Protocol (IP) addressing. The switch supports various protocols, enabling seamless integration into a wide range of network environments.

Additionally, the HP GbE2c is equipped with a robust management system that allows network administrators to easily configure and monitor network settings. With its user-friendly interface, administrators can gain insights into traffic patterns, performance metrics, and potential issues, helping to maintain optimal network performance.

Power efficiency is another key characteristic of the HP GbE2c. The switch is designed to minimize power consumption without sacrificing performance, making it a more sustainable choice for data centers aiming to reduce their carbon footprint. This energy-efficient design is crucial for enterprises looking to lower operational costs while maintaining a high level of service.

The HP GbE2c also boasts high availability features, including redundant power supplies and failover options, ensuring that the network remains operational even in the event of a component failure. This reliability is critical for businesses that require uninterrupted network access for their daily operations.

In summary, the HP GbE2c Ethernet Switch combines speed, versatility, and efficiency, making it an ideal choice for businesses seeking to enhance their networking capabilities. Its robust feature set, advanced management options, and focus on energy efficiency position it as a top-tier solution in the competitive networking landscape. Organizations can rely on the GbE2c to deliver high performance and reliability, thus meeting the demands of today's data-intensive environments.
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