Chapter 9 VLAN

Table 18 Advanced Application > VLAN > VLAN Port Setting (continued)

LABEL

DESCRIPTION

Ingress Check

If this check box is selected for a port, the Switch discards incoming

 

frames for VLANs that do not include this port in its member set.

 

Clear this check box to disable ingress filtering.

 

 

PVID

A PVID (Port VLAN ID) is a tag that adds to incoming untagged frames

 

received on a port so that the frames are forwarded to the VLAN group

 

that the tag defines.

 

Enter a number between 1and 4094 as the port VLAN ID.

 

 

GVRP

Select this check box to allow GVRP on this port.

 

 

Acceptable

Specify the type of frames allowed on a port. Choices are All, Tag Only

Frame Type

and Untag Only.

 

Select All from the drop-down list box to accept all untagged or tagged

 

frames on this port. This is the default setting.

 

Select Tag Only to accept only tagged frames on this port. All untagged

 

frames will be dropped.

 

Select Untag Only to accept only untagged frames on this port. All

 

tagged frames will be dropped.

 

 

VLAN Trunking

Enable VLAN Trunking on ports connected to other switches or routers

 

(but not ports directly connected to end users) to allow frames

 

belonging to unknown VLAN groups to pass through the Switch.

 

 

Isolation

Select this to allows this port to communicate only with the CPU

 

management port and the ports on which the isolation feature is not

 

enabled.

 

 

Apply

Click Apply to save your changes to the Switch’s run-time memory. The

 

Switch loses these changes if it is turned off or loses power, so use the

 

Save link on the top navigation panel to save your changes to the non-

 

volatile memory when you are done configuring.

 

 

Cancel

Click Cancel to begin configuring this screen afresh.

 

 

9.6 Subnet Based VLANs

126

Subnet based VLANs allow you to group traffic into logical VLANs based on the source IP subnet you specify. When a frame is received on a port, the Switch checks if a tag is added already and the IP subnet it came from. The untagged packets from the same IP subnet are then placed in the same subnet based VLAN. One advantage of using subnet based VLANs is that priority can be assigned to traffic from the same IP subnet.

For example, an ISP (Internet Services Provider) may divide different types of services it provides to customers into different IP subnets. Traffic for voice services is designated for IP subnet 172.16.1.0/24, video for 192.168.1.0/24 and data for 10.1.1.0/24. The Switch can then be configured to group incoming traffic based on the source IP subnet of incoming frames.

MGS3700-12C User’s Guide

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ZyXEL Communications metrogigabit switch manual Subnet Based VLANs, 126, Pvid, Untag Only
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metrogigabit switch specifications

ZyXEL Communications has long been a prominent player in the networking hardware industry, providing innovative solutions that cater to both business and consumer markets. Among their notable offerings is the Metrogigabit switch, a device designed to meet the high demands of modern networks.

The ZyXEL Metrogigabit switch is primarily aimed at service providers and large enterprises, recognizing the need for seamless connectivity in an increasingly digital world. This switch is engineered for scalability, enabling users to effortlessly expand their network as their operational needs grow. With support for high bandwidth, it is particularly suited for environments requiring extensive data traffic management, such as data centers and campus networks.

One of the standout features of the Metrogigabit switch is its high-density gigabit Ethernet ports, which provide a backbone for reliable data transmission. The switch typically supports multiple 10G SFP+ uplinks, ensuring fast and efficient connections to upstream devices. This capability allows users to configure their networks to handle large volumes of data quickly and without interruption.

In terms of technology, the Metrogigabit switch leverages advanced Layer 2 and Layer 3 functionalities. This includes features such as VLAN support for traffic segmentation, Quality of Service (QoS) for prioritizing mission-critical applications, and robust multicast management. These capabilities contribute to enhanced network efficiency and performance.

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In summary, the ZyXEL Metrogigabit switch is an essential tool for organizations seeking robust performance, reliability, and security in their networking infrastructure. With its high-density ports, flexible configuration options, and comprehensive management features, it provides a strong foundation for building efficient and scalable networks. Whether for service providers or enterprises, this switch stands out as a reliable choice in the fast-evolving technological landscape.
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