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Sorry for not replying, i didn't know anything had been written. Thanks for the advice, i will take a look.
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Sorry for not replying, i didn't know anything had been written. Thanks for the advice, i will take a look.

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Hi all,<br />
<br />
Hoping someone can help, I am no expert with Extreme.<br />
<br />
We have an Extreme Summit 250E switch with multiple VLAN's setup. These VLAN's all work as expected only they can all talk to one another meaning anyone with some networking knowledge could easily bypass the security. <br />
<br />
I believe this behavior is due to the Voice VLAN (ID 100) being tagged on all ports meaning the devices on the individual VLAN's can also access and communicate across VLAN 100. My problem here is that the phone system provides the DHCP addressing for the networks so therefore all devices need to communicate with this network.<br />
<br />
Am i right in thinking I only need to tag the port that the phone system is connected to into each VLAN and that having VLAN 100 tagged for all ports is the cause of the issue?<br />
<br />
Sorry if that is a bit vague, pickled head at the moment.
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Hi all,

Hoping someone can help, I am no expert with Extreme.

We have an Extreme Summit 250E switch with multiple VLAN's setup. These VLAN's all work as expected only they can all talk to one another meaning anyone with some networking knowledge could easily bypass the security. 

I believe this behavior is due to the Voice VLAN (ID 100) being tagged on all ports meaning the devices on the individual VLAN's can also access and communicate across VLAN 100. My problem here is that the phone system provides the DHCP addressing for the networks so therefore all devices need to communicate with this network.

Am i right in thinking I only need to tag the port that the phone system is connected to into each VLAN and that having VLAN 100 tagged for all ports is the cause of the issue?

Sorry if that is a bit vague, pickled head at the moment.

Extreme Summit 250E-48p Voice VLAN Config

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.