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14.4.4 VLAN-translation Troubleshooting
Normally the VLAN-translation is applied on trunk ports. Normally before using the VLA N-translation,
the dot1q-tunnel function needs to be enabled, becoming adaptable to double tag data packet and
translating the VLAN normally.
14.5 Dynamic VLAN Configuration
14.5.1 Introduction to Dynamic VLAN
The dynamic VLAN is named corresponding to the static VLAN (namely the port based VLAN). Dynamic
VLAN supported by the Chassis Switch includes MAC-bas ed VLAN, IP -subnet-based VLAN and
Protocol-based VLAN. Detailed description is as follows:
The MAC-based VLAN division is based on the MA C address of each host, namely every host with a MAC
address will be assigned to certain VLAN. By the means, the network user will maintain his membership in his
belonging VLAN when moves from a physical location to another. As we can see the greatest advantage of
this VLAN division is that the VLAN does not have to be re-configured when the user physic location change,
namely shift from one switch to another, which is because it is user based, not switch port based.
The IP subnet based VLA N is divided according to the source IP address and its subnet mask of every host. It
assigns corres ponding VLAN ID to the data packet according to the subnet segment, leading the data packet
to specified VLA N. Its advantage is the same as that of the MA C-based VLA N: the us er does not have to
change configuration when relocat ed.
The VLAN is divided by the network layer protoc ol, assigning different protocol to different VLANs. This is very
attractive to the network administrators who wish to organize the user by applications and services. Moreover
the user can move freely within the network while maintaining his members hip. Advantage of this method
enables user to change physical position without changing their VLAN residing configuration, while the VLA N
can be divided by types of protocols whic h is important to the network administrators. Further, this method has
no need of added frame label to identify the VLAN which reduce the net work traffic.
Notice: Dynamic VLAN needs to associate with Hybrid attribut e of the ports to work, so the ports that may be
added to a dynamic VLAN must be configured as Hybrid port.
14.5.2 Dynamic VLAN Configuration
Dynamic VLAN Configuration Task Sequence:
1.
Configure the MAC-based VLA N function on the port
2.
Set the VLAN to MAC VLA N
3.
Configure the correspondence between the MAC address and the VLAN
4.
Configure the IP-subnet-based VLAN function on the port
5.
Configure the correspondence between the IP subnet and the VLAN
6.
Configure the correspondence between the Protoc ols and the VLA N
7.
Adjust the priority of the dynamic VLAN
1. Configure the MAC-ba sed VLAN function on the port
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Table of Contents
Troubleshooting
