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Figure 4-3 Configure STP port
Step 2
Configure parameters.
Table 4-2 Description of parameters
Parameter
Description
Port No.
Select the port you want to configure.
Priority
Configure the port priority. The value ranges from 0 to 240, and must be the
integral multiple of 16.
RPC
Configure the path cost from the current port to root bridge. The value ranges
from 1 to 200000000. The path cost is default when RPC is set as 0.
Step 3
Click
Save
.
5.2 Configuring VLAN
5.2.1 VLAN Definition
Logically, one LAN (Local Area Network) can be divided into many subsets. Each subset has its own
broadcast area: virtual LAN (VLAN). A VLAN is divided from a LAN on a logical basis rather than on a
physical basis, to realize the isolated broadcast area in the VLAN.
5.2.2 VLAN Function
●
Enhance the network performance. The broadcast packets are in the VLAN, which can effectively
control the network broadcast storm, reduce network bandwidth and enhance network
processing ability.
●
Enhance the network security. The switches in different VLANs cannot access each other, and the
hosts in different VLAN cannot communicate with each other. They need a router or the three-
layer switch to forward the message.
●
Simplify the network management. The host of the same virtual working group is not limited in
one physical area, which can simplify the network management and facilitate to establish
working groups for users in different areas.
