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Beginner

Connection between Managed and unmanaged switches

Hi all,

Please let me know will the below scenario is going to work?

I have three unmanged switch and one cisco layer 3 switch. Please see attached diagram. If I connect the three unmanaged switch to the Cisco layer 3 switch and each connected port is configured with vlan 10, 20, 30 (as shown in the figure), will it be able to communicate with outside. Means If I connect one machine to first unmanaged switch and configured with IP 192.168.1.x range, connect another machine to the second unmanaged switch and assign the IP 10.0.1.x range, both machine able to get internet. (consider the configuration has already done in firewall and layer switch to get the internet for all vlans).

Regards,

Ejaz  

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VIP Expert

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The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

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Posting

I would expect it to work, as each unmanaged switch just expands the number of ports for your three VLANs.  I.e. if it works with a PC plugged directly into the Cisco port, it should work if plugged into an unmanaged switch plugged into the same port.

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Beginner

Thank you for your valuable

Thank you for your valuable response Joseph. :)

I heard that the unmanageble switch can only handle Vlan 1 traffic, It will discard all other Vlan traffic. Is it true?

Ejaz

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VIP Expert

Disclaimer

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages wha2tsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Not exactly.

An unmanaged switch cannot process tagged frames.

On trunk ports, often VLAN 1 is untagged, but that can be changed with the native VLAN command.

As long as your VLAN ports are configured as access ports, not trunk ports, it should be fine.

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