ZyXEL Communications GS-4012F Guide de l'utilisateur télécharger pdf (Page 32)

ES-3100 Series Switch Support Notes

For Switch-2, port 1, port 2, and port 3 are allowed to communicate back and forth

with uplink port 4, but not with other ports.

• Switch-2 VLAN 1 member port: port 1 and port 4

• Switch-2 VLAN 2 member port: port 2 and port 4

• Switch-2 VLAN 3 member port: port 3 and port 4

For Switch-3, port 2, port 3, and port 4 are allowed to communicate back and forth

with uplink port 1, but not with other ports.

• Switch-3 VLAN 1 member port: port 2 and port 1

• Switch-3 VLAN 2 member port: port 3 and port 1

• Switch-2 VLAN 3 member port: port 4 and port 1

Host A can't talk to Host B due to the port-based VLAN in Switch-2, and Host C can't

talk to Host D due to the port-based VLAN in Switch-3. But both Switch-2 and

Switch-3 uplink to the none VLAN Switch-1. Host A and Host B will talk to Host C and

Host D via the none VLAN switch because port-based VLAN can't across different

switches.

To achieve the security between different switches, you must put another port-based

VLAN switch for the uplink. Each port on the uplink switch also should be separated

into different VLAN, except for the port to the gateway. So subscribers only can talk to

the gateway for Internet access but not communicate with each other.

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ZyXEL Communications GS-4012F Guide de l'utilisateur Page 32