3 C O M
®
N J 2 0 0 N E T W O R K J A C K — 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
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
. From the list of devices, select an NJ200
Network Jack and then select
Property
. You can also right-click on its IP address
and select
Property
from the menu.
4
YES
YES
NO
NO
NO
NO
YES
YES
Inspect
Ethernet
frame
Inspect
Ethernet
frame
802.1 VLAN Tag Set?
802.1 VLAN Tag Set?
Egress rule set
to add tag?
Ingress rule set
to remove tag?
Do not modify
tag information
Forward frame
to PAN port
Forward frame
to PAN port
Add VLAN tag
information
Remove all tag
information
Do not modify
tag information
Do not modify
tag information
Do not modify
tag information
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.
Figure 2.
3Com Central Configuration Manager
GUI enables point-and-click remote administration
of NJ200 Network Jacks.
How the LAN port handles traffic coming from the LAN
How the LAN port handles traffic coming from the PAN