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Example 4, Isolating Network Traffic According to Protocol
Examples 4-17
3. To allow all frames (except the AppleTalk frames, which will be prevented in steps 4 and 5)
from being transmitted out Port 1 to Switch 3 and the network backbone, Port VLAN IDs are
assigned to all switch ports using the Port Assignment screen, as follows:
• Port 1, VLAN ID: 5 for the Yellow VLAN
• Port 2, VLAN ID: 5 for the Yellow VLAN
• Port 3, VLAN ID: 5 for the Yellow VLAN
• Port 4, VLAN ID: 5 for the Yellow VLAN
• Port 5, VLAN ID: 5 for the Yellow VLAN
• Port 6, VLAN ID: 5 for the Yellow VLAN
• Port 7, VLAN ID: 5 for the Yellow VLAN
• Port 8, VLAN ID: 5 for the Yellow VLAN
4. On the Protocol VLAN Configuration screen, the VLAN ID 6 of the Grey VLAN is assigned to
the AppleTalk protocol.
• VLAN ID 6, Protocol Type: AppleTalk, Status: ADD
This creates the protocol VLAN ID 6 that will handle only AppleTalk frames and enables ports
to be assigned the this VLAN.
5. The AppleTalk frames must now be restricted to Ports 2 through 8 of the Yellow VLAN. On the
Protocol Ports Configuration screen, All ports except Port 1 are assigned to the AppleTalk
protocol, as follows:
• Port 2, VLAN ID: 6, Protocol: AppleTalk
• Port 3, VLAN ID: 6, Protocol: AppleTalk
• Port 4, VLAN ID: 6, Protocol: AppleTalk
• Port 5, VLAN ID: 6, Protocol: AppleTalk
• Port 6, VLAN ID: 6, Protocol: AppleTalk
• Port 7, VLAN ID: 6, Protocol: AppleTalk
• Port 8, VLAN ID: 6, Protocol: AppleTalk
Any AppleTalk frame received on ports 2 through 8 will be broadcast to all other ports on Switch
5 associated with the AppleTalk protocol. For example, if Port 2 received a frame with the
AppleTalk protocol, Switch 5 would only transmit the frame to Ports 2, 3, 4, 6, 7, and 8.