Netgear XS728T – ProSAFE® 10 Gigabit Smart Managed Switch Guia Do Administrador

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 Configuration Examples
187
 XS728T ProSAFE 28-Port 10-Gigabit L2+ Smart Switch
Packets leaving the switch are either tagged or untagged, depending on the setting for 
that port’s VLAN membership properties. A U for a given port means that packets leaving 
the switch from that port are untagged. Inversely, a T for a given port means that packets 
leaving the switch from that port are tagged with the VLAN ID that is associated with the 
port.
The example given in this section describes a wide range of configurations to help provide an 
understanding of tagged VLANs.
Sample VLAN Configuration
This example demonstrates several scenarios of VLAN use and describes how the switch 
handles tagged and untagged traffic.
In this example, you create two new VLANs, change the port membership for default 
VLAN
 
1, and assign port members to the two new VLANs:
1. 
In the VLAN Configuration screen (see 
VLAN Configuration 
on page
 
53), create the 
following VLANs:
A VLAN with VLAN ID 10
A VLAN with VLAN ID 20
2. 
In the VLAN Membership screen (see 
VLAN Membership 
on page
 
54), specify the VLAN 
membership as follows:
For the VLAN with VLAN ID 10, specify the following members: port 1 (U), port 2 (U), 
and port 3 (T).
For the VLAN with VLAN ID 20, specify the following members: port 4 (U), port 5 (T), 
and port 6 (U).
3. 
In the Port PVID Configuration screen (see 
Port PVID Configuration 
on page
 
55), specify 
the PVID for ports xg1 and xg4 so that packets entering these ports are tagged with the port 
VLAN ID:
Port xg1. PVID 10
Port xg4. PVID 20
4. 
This VLAN configuration produces the following results:
If an untagged packet enters port 1, the switch tags it with VLAN ID
 
10. The packet 
has access to port 2 and port 3. The outgoing packet is stripped of its tag to leave 
 port 2 as an untagged packet. For port 3, the outgoing packet leaves as a tagged 
packet with VLAN ID 10.
If a tagged packet with VLAN ID 10 enters port 3, the packet has access to port 1 and 
port 2. If the packet leaves port 1 or port 2, it is stripped of its tag to leave the switch 
as an untagged packet.
If an untagged packet enters port 4, the switch tags it with VLAN ID 20. The packet 
has access to port 5 and port 6. The outgoing packet is stripped of its tag to become 
an untagged packet as it leaves port 6. For port 5, the outgoing packet leaves as a 
tagged packet with VLAN ID 20.