Detailed explanation of VLAN configuration instances for Huawei 3Com vswitches

The following is an example of how to set vlan of a Huawei 3Com vswitch. The vlan of a Huawei 3Com vswitch is similar to that of a Huawei 3Com vswitch. The following describes how to set vlan of a Huawei 3Com vswitch, although it does not directly involve the detailed introduction of the VLAN of the Huawei 3Com Switch, it will be rewarded after reading it.

This article briefly introduces the functions and configurations of the Tag VLAN of the Ethernet switch of Huawei 3Com, so that users can more flexibly master the concept and application of the VLAN of the switch. Before using the Tag Vlan, let's take a look at the following example.

Assume that the VLAN network of the Huawei 3Com Switch is as follows:
◆ Ports 1-10 are connected to common users, and ports 11-23 are connected to commercial users.
◆ Requirement: normal users do not need to upload vlan information, while commercial users must upload vlan information.
◆ We can Configure Ports 1-23 as follows:
◆ Port 1-10: VLAN1;
◆ Port 11-23: Each belongs to a Huawei 3Com Switch VLAN.

However, we cannot configure the 24 uplink ports because the VLAN information of the Huawei 3Com Switch of commercial users cannot be transparently transmitted if we set the uplink port to the UNTAGGED mode; if we set it to TAGGED, the VLAN information of common users is also transparently transmitted. In this case, a good solution is to use the Tag Vlan:

A Tag Vlan enables an UNTAGGED port to transparently transmit the VLAN information of a specified Huawei 3Com Switch. That is, some data with the specified VLAN information on an UNTAGGED port? Passthrough. Now we can place 24 uplink ports in vlan1.

The Tag Vlan is configured on the 24 ports to transparently transmit VLAN information of the Huawei 3Com Switch for commercial users. This meets users' requirements. A function is provided in switches such as QuidwayS3026/2016/2008: tag vlan. It is mainly used to transparently transmit data packets with VLAN IDs on Access ports.

Consider the following:
◆ Pc1 is a common user connected to Port 1 and belongs to VLAN10 of Huawei 3Com Switch; pc2 is a special user connected to port 9 and belongs to VLAN20 of Huawei 3Com Switch. 24 uplink ports.
◆ Requirement: the vlan information of common users does not need to be transparently transmitted to the upper-layer switch. The VLAN information of special users of Huawei 3Com must be transparently transmitted to the upper-layer switch.
◆ This networking requirement can be achieved using the tag Huawei 3Com Switch VLAN function.
◆ First, we divide 1 port and 24 port into VLAN 10 of the Huawei 3Com Switch, and then set it on port 24 as the ACCESS port:
◆ S3026 (config-if-Ethernet0/24) # tag vlan 20
◆ In this way, data packets with VLANID 20 of the Huawei 3Com Switch can be transparently transmitted from 24 ports.