3com 8807 Guia Do Utilizador

C

HAPTER

 7: VLAN C

ONFIGURATION

■

You cannot delete a protocol-based VLAN that has ports associated with.

■

You cannot delete a protocol-based VLAN on a port while the port is associated 
with the VLAN.

The following sections describe the IP subnet-based VLAN configuration tasks:

■

Associating/dissociating a specified port with/from an IP subnet-based VLAN

■

Configuring an IP subnet-based VLAN

Use the following commands to associate/dissociate a specified port with/from an 
IP subnet-based VLAN.

Perform the following configuration in Ethernet port view.

Perform the following configuration in VLAN view.

The CPU is a special port in the Switch 8800 Family series routing switches. By 
default, because the CPU port is in a VLAN, when common broadcast packets and 
unknown multicast packets are broadcast within a VLAN, these packets will also 
be broadcast to the CPU. To prevent waste of CPU resources, you can move the 
CPU port out of the VLAN, so that common broadcast packets and unknown 
multicast packets will not be handed to the CPU for processing.

You can use the following command to move the CPU port out of the VLAN.

Perform the following configuration in VLAN view.

By default, the CPU port is in the VLAN.

Table 41   Associate/dissociate a port with/from an IP subnet-based VLAN

Associate a specified port with an IP 
subnet-based VLAN 

port hybrid ip-vlan vlan vlan-id 

Remove a specified port from an IP 
subnet-based VLAN 

undo port hybrid ip-vlan vlan vlan-id

Table 42   Configure/delete an IP subnet-based VLAN

Create an IP subnet-based VLAN 

vlan-type ip-subnet ip ip-address { [ 
net-mask | net-mask-length ] } 

Delete an IP subnet-based VLAN 

undo vlan-type ip-subnet { index-begin [ to 
index-end ] | all }

Table 43   Move the CPU port out of/into the VLAN

Move the CPU port out of the VLAN 

trap-to-cpu disable 

Move the CPU port into the VLAN