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zadrian

12 Posts

7641

August 29th, 2007 10:00

Need Help - Linking VLANs

​ Hi, I am using a PC5324. ​
​ ​
​ I am trying to connect 2 or more VLANs using a "common port". ​
​ Example: ​
​ I have created VLAN-1 on g1-g5 , VLAN-2 on g6-g10, VLAN-3 on g11-g16 ​
​ How do I create : ​
​ 1) port g17 such that it can receive data from VLAN-2 & VLAN-3 such that VLAN-2 & VLAN-3 cannot send data to each other ​
​ 2) port g18 that can receive data from VLAN-1& VLAN-2 & VLAN-3 such that VLAN-1 & VLAN-2 & VLAN-3 cannot send data to each other ​
​ ​
​ BTW, what is the diff between access, general and tyunk settings on the HTML GUI and does it affect the settings ? ​

nlspears

52 Posts

September 6th, 2007 16:00

What it sounds like  you need to do is put the ports in question into trunk mode. This way they can communicate with multiple vlans. As for general I believe you will be able to do the same thing, but I haven't personally used the general mode.

SlimJimE4

12 Posts

September 10th, 2007 11:00

Yes putting the VLAN in trunk mode will allow you to recieve more than one VLAN. If left default it would sent the default VLAN 1 or the VLAN you specified. However, being able to send and recieve over VLAN's is done on the Layer 3 Router and not from the switch. Hope this helps.

Crzywolf

93 Posts

September 14th, 2007 17:00

The trunk will work as long as those ports are connected to switches that are also set as trunk ports.
 
interface ethernet g18
switchport mode trunk
switchport trunk allowed vlan add 2,3
exit
interface ethernet g17
switchport mode trunk
switchport trunk allowed vlan add 2,3
switchport trunk native vlan 2
exit
exit
 
 
if you don't do switchport native vlan 2 on g17 then it will also pass vlan 1.  The native vlan on the port is where all untagged traffic will be dumped, regardless if it is meant for that vlan or not.

StarLog

203 Posts

September 16th, 2007 20:00

Are your NIC's vlan aware.? Most NIC's do not support more then one vlan.

Putting the port from one switch to another in trunk or general, with Tagged vlans will support multiple vlans on that port.

Then it is the ability of the PC's NIC to be able to decipher.

Usually we just put two NIC's on a PC, and connect one to each vlan.

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