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multiple VLANs in one port

Posted on 2008-10-20
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Last Modified: 2008-10-23
is it possible to have two or more vlans in one port
for example, port 1 can have vlan1 and vlan2 users
im using catalyst 3548 switch, and 1701 router for routing
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Question by:ammadeyy2020
7 Comments
 
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Expert Comment

by:Pete Long
ID: 22756047
Hello ammadeyy2020,

Yes multiple VLANS can run on one port - if that port is "Untagged" basically you configure it as a trunk post (A trunk can carry any VLAN tagged traffic), once a port is "tagged" to one vlan it only caries traffic for that VLAN

Regards,

PeteLong
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Expert Comment

by:Mhercol
ID: 22756054
It is possible in Procurve switches (the ones I work with). it is called tagged VLANs. Try to look in that direction for your switch. Sorry for not being able to help you further
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Expert Comment

by:Don Johnston
ID: 22756414
On the 3548 side, designate the port connected to the router as a trunk port.

On the 1701 side, you'll also create a trunk.

You can use ISL or 802.1q as your trunking protocol. I'm using ISL in the example below.




3548
int f0/1
 switchport trunk encapsulation isl
 switchport mode trunk
 
 
1701
int f0.1
 encapsulation isl 1
 ip address 192.168.1.1 255.255.255.0
int f0.2
 encapsulation isl 2
 ip address 192.168.2.1 255.255.255.0
int f0
 no shut
 
 
 

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Author Comment

by:ammadeyy2020
ID: 22784255
for one port can i assign two vlans?

192.168.1.1 clients and 192.168.2.1 clients can use port 1 of the switch?
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Expert Comment

by:Don Johnston
ID: 22785075
How do plan on connecting these two clients to a single port on the switch?
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Author Comment

by:ammadeyy2020
ID: 22785182
using a hub (unmanaged switch)
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Accepted Solution

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Don Johnston earned 500 total points
ID: 22785205
Then the answer is no. You can not have two VLAN's on one port.
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Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

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