40

 

Rapier Switch User Guide

 

Table 5: Parameters displayed in the output of the SHOW VLAN command

 

 

 

 

Parameter

Meaning

 

 

 

 

Protocol

The name of the protocol, which is determined from the

 

 

format and identification number.

 

 

 

 

Format

The encapsulation format specified by the module.

 

 

 

 

Discrim

The discriminator specified by the module to identify which

 

 

packets of the given format should be received.

 

 

 

 

MAC Address

The Media Access Control source address for which the

 

 

module wishes to receive packets. This is commonly known

 

 

as the Ethernet address.

 

 

 

There are some disadvantages to using VLANs with untagged ports only:

■It is difficult to share network resources, such as servers and printers, across several VLANs. The routing functions in the switch must be configured to interconnect using untagged ports only.

■A VLAN that spans several switches requires a port on each switch for the interconnection of the various parts of the VLAN. If there are several VLANs in the switch that span more than one switch, then many ports are occupied with connecting the VLANs, and so are unavailable for other devices.

These disadvantages can be overcome with the versatility of VLAN tagging.

VLAN Tagging

VLAN tagging provides the advantages of more efficient and flexible use of switch ports and network resources, while maintaining the level of security given by port-based VLANs. With VLAN tagging, a port can belong to several VLANs. This means that network resources can be shared between different VLANs by configuring their ports to belong to more than one VLAN. Only one port is required on each switch to uplink (trunk) all VLAN traffic between two VLAN aware switches, as this port can be configured to belong to all VLANs on the switch.

Support for VLAN tagging is implemented in the switch according to IEEE Standard 802.1Q. Just as with untagged ports, tagged ports in a VLAN belong to the VLAN’s broadcast domain. A VLAN Identifier (VID) is defined for each VLAN, and this VID is used to switch traffic through a VLAN aware network so that frames are only transmitted on ports belonging to the VLAN. Other vendors’ VLAN aware devices on the network can be configured to accept traffic from one or more VLANs. A VLAN-aware server can be configured to accept traffic from many different VLANs, and then return data to each VLAN without mixing or leaking data into the wrong VLANs.

Every frame admitted by the switch has a VID associated with it, either because it already had a VLAN tag when it arrived, or because the VLAN for which the incoming port is untagged was associated with the frame when it was admitted. The switch only forwards the frame over those ports that belong to the VLAN specified by this VID. When the switch forwards a frame over a tagged port to another VLAN-aware device (for instance, another switch), it adds a VLAN tag (the same VID) to the frame. When the switch forwards the frame over an untagged port to a VLAN-unaware device, it transmits the frame as a VLAN-untagged frame, not including the VID in the frame.

Rapier Switch Software Release 2.2.1 C613-02013-00 Rev A

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Allied Telesis C613-02013-00 manual Vlan Tagging, Parameter Meaning
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C613-02013-00 specifications

The Allied Telesis C613-02013-00 is a versatile and powerful network switch designed to meet the demands of modern networking environments. This device is part of Allied Telesis's extensive range of networking solutions, catering to both enterprise and industrial applications. It is engineered for high performance, reliability, and ease of management, making it a suitable choice for organizations that require robust connectivity solutions.

One of the main features of the C613-02013-00 is its support for advanced Layer 2 switching capabilities. This provides businesses with the necessary tools to manage and direct network traffic efficiently. The switch includes support for VLAN (Virtual Local Area Network) technology, which allows for the segmentation of network traffic, enhancing both security and performance. With VLANs, organizations can isolate critical workloads and improve network management while ensuring that sensitive information is protected from unauthorized access.

Another key characteristic of the C613-02013-00 is its extensive support for Power over Ethernet (PoE). This feature enables the switch to deliver electrical power along with data over standard Ethernet cabling. This is particularly beneficial for powering devices such as IP cameras, wireless access points, and VoIP phones, reducing the need for additional power supply infrastructure. With PoE capabilities, the switch simplifies installation and enhances flexibility in deploying network devices.

The C613-02013-00 also boasts advanced network management features, including support for SNMP (Simple Network Management Protocol) for efficient monitoring and troubleshooting. This ensures that network administrators can maintain optimal performance and quickly address any issues that arise. Additionally, the switch supports network redundancy features like Rapid Spanning Tree Protocol (RSTP), which helps to prevent network loops and minimizes downtime.

In terms of physical characteristics, the C613-02013-00 is designed for durability and ease of deployment in various environments. Its compact form factor allows for effective space utilization in data centers and network closets. Moreover, it features a fanless design, making it suitable for deployment in noise-sensitive environments such as offices and classrooms.

In summary, the Allied Telesis C613-02013-00 is a robust network switch offering advanced features such as Layer 2 switching, PoE support, and comprehensive network management capabilities. Its design and performance make it an excellent choice for businesses seeking to enhance their network infrastructure with reliable and secure connectivity solutions.
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