3Com NJ220 - IntelliJack Switch Характеристики Руководство - Страница 4
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3 C O M
®
N J 2 0 5 I N T E L L I J A C K
Figure 1. The ingress mode is applied to VLAN
traffic coming from the LAN before it gets sent
downstream to the PAN ports. The egress mode is
applied to VLAN traffic coming from the PAN ports
before it gets sent upstream to the LAN.
How the LAN port handles traffic coming from the LAN
NO
802.1 VLAN Tag Set?
Do not modify
Do not modify
tag information
tag information
Forward frame
to PAN port
Figure 2. 3Com Central Configuration Manager
GUI enables point-and-click remote administration
of NJ205 IntelliJack Switches.
4
™
S W I T C H — V L A N S & T R A F F I C P R I O R I T I Z AT I O N
Inspect
Ethernet
frame
YES
NO
YES
Ingress rule set
to remove tag?
Remove all tag
information
Figure 1 provides a two-key schematic of the traffic-control process, including where
ingress and egress rules are applied. Configuring the ingress and egress modes is
accomplished using 3Com Central Configuration Manager:
1. Open the
Central Configuration Manager
IntelliJack Switch and then select
address and select
How the LAN port handles traffic coming from the PAN
NO
802.1 VLAN Tag Set?
YES
Egress rule set
to add tag?
Add VLAN tag
information
tag information
. From the list of devices, select an NJ205
Property
. You can also right-click on its IP
Property
from the menu.
Inspect
Ethernet
frame
YES
NO
Do not modify
Do not modify
tag information
Forward frame
to PAN port