3com 8807 User Guide

1 If the isolate-user-VLAN contains ports

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For hybrid ports, if the default port VLAN ID is the same as the 
isolate-user-VLAN ID, and the port joins the isolate-user-VLAN in the Untagged 
mode, all the hybrid ports meeting the requirements will join the Secondary 
VLAN in the Untagged mode simultaneously. For those not meeting the 
requirements, no other processing will be made.

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For an access port, the system will set the port as a hybrid port and set the 
default port VLAN ID and isolate-user-VLAN ID to be the same. Moreover, the 
port joins the isolate-user-VLAN and Secondary VLAN in the Untagged mode.

2 If the Secondary VLAN contains ports

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For a hybrid port, if the default port VLAN ID is the same as the Secondary 
VLAN ID, and the port joins the Secondary VLAN in the Untagged mode, all the 
hybrid ports meeting the requirements will join the isolate-user-VLAN in the 
Untagged mode simultaneously. For those not meeting the requirements, no 
other processing will be made.

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For an access port, the system will set the port as a hybrid port and set the 
default port VLAN ID and Secondary VLAN ID to be the same. Moreover, the 
port joins the isolate-user-VLAN and Secondary VLAN in the Untagged mode.

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Trunk ports and access ports cannot join an isolate-user-VLAN or Secondary 
VLAN.

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Hybrid ports can join or exit from an isolate-user-VLAN and Secondary VLAN.

n 

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You cannot directly set an isolate-user-VLAN or Secondary VLAN as other type 
of VLAN than common VLAN, such as multicast VLAN, Super/Sub VLAN, Guest 
VLAN or VLAN running L2VPN services.

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When you set a common VLAN as an isolate-user-VLAN or Secondary VLAN, 
the VLAN cannot contain trunk ports.

After the above configuration, execute display command in any view to display 
the running of the isolate-user-VLAN configuration, and to verify the effect of the 
configuration.

Table 51   Display and debug isolate-user-VLAN

Display the mapping relationship between the 
isolate-user-vlan and Secondary VLAN 

display isolate-user-vlan [ 
isolate-user-vlan-num ]