Will this VLAN work? (2x TL-SG108E)

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Will this VLAN work? (2x TL-SG108E)

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Will this VLAN work? (2x TL-SG108E)
Will this VLAN work? (2x TL-SG108E)
2023-03-03 16:28:43 - last edited 2023-03-03 16:30:33
Model: TL-SG108E  
Hardware Version: V6
Firmware Version: 1.0.0 Build 20230218 Rel.50633

I have never tried to do a VLAN, but read a few articles, so hopefully the below will work.

 

I want to separate my wife office computer from our home network. She will only use Ports 6 and 7 on Switch B in her office. Our router, an ER605 V2 is in my office and connected to Port 1 on Switch A. Both switches are connected to each other on Port 8.

 

 

Switch A connected to router (ER605 V2) on Port 1

 

VLAN 1: 1-8

VLAN 2: 1-8

VLAN 3: 1,8

 

Untagged Ports: 1-7

Tagged Ports: 8

 

PVID 1: Port 1.8

PVID 2: Port 2-7

 

Switch B connected to Switch A on Port 8

 

VLAN 1: 1-8

VLAN 2: 1-5

VLAN 3: 6-8

 

Untagged Ports: 1-7

Tagged Ports: 8

 

PVID 1: Port 8

PVID 2: Port 1-5

PVID 3: Port 6-7

 

BTW, thanks in advance!

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#1
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-03 21:52:21
Looks good to me. Are you using different subnets for the different VLANs or what's going on with SwitchA-Port1 to prevent them hairpinning at Layer3?
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#2
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-03 22:53:10

  @d0ugmac1 

 

Thanks for the reply!

 

Had to look up hairpinning... What would be the downside? If it's a problem, I'll just put VLAN 3 on a different subnet than VLAN 2.

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#3
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-04 11:00:45

Hi  @Hemicrusher 

 

You have LAN(VLAN) interface created on the ER605 right?

 

The uplink port of your switch A(I think it is the port 1) should be tagged on all VLANs

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#4
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-04 15:34:47 - last edited 2023-03-04 15:46:23

  @Hank21 

 

I'll tag Port 1 on Switch A to the router (ER605), then create a VLAN in the ER605. Switch A will connect to Port 5 on the ER605, so should it look like this? 

 

Port 1 is WAN, Port 5 to Switch A

 

VLAN 1: 1-5

VLAN 2: 1,5

VLAN 3: 1,5

 

Untagged Ports: 1-5

 

Or do I Tag Port 5, and leave Port 1 Untagged?

 

 

 

 

Thanks for your help.... I appreciate it.

 

 

 

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#5
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-04 17:02:42 - last edited 2023-03-04 17:05:10

If you tag the uplink port of the switch you tag port.5 of the router. Port 1 is untagged, unless you have some funky PPPoe FTTH like I do.

 

Also they are vLANs not vWANs on the routers.  Most internet uplinks are untagged.

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#6
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-04 17:37:55 - last edited 2023-03-04 21:44:17

  @d0ugmac1 

 

Okay, that makes sense.

 

I'll have three VLANs, VLAN 1 is default, VLAN 2 is my home, and VLAN 3 is my wife office computer. If I put VLAN 3 on a different subnet, will VLAN 2 still be on the same subnet as VLAN 1, or do I have to specify the subnet of VLAN 2?

 

Edit:Thinking about DHCP and being able to access the router from VLAN 2. If I am just trying to keep my wife's computer separate, do I need another VLAN for my home devices?... Three VLANs like I stated above, or can I just have two VLANs? VLAN 1 for home, and VLAN 2 for my wife's work computer?

 

Sorry for all the questions.

 

Thanks for all your help.

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#7
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-04 23:28:21
2 VLANs should be enough, that's how I run things at one site. Put your wife's gear on one VLAN/subnet and everything else on another. Also keeps the ACLs simple..and you will still need ACLs in order to isolate the two subnets at the router though.
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#8
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-05 05:53:21

  @d0ugmac1 

 

Thanks for your help!

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#9
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-07 00:55:51 - last edited 2023-03-07 00:57:28

  @d0ugmac1 

 

BTW, thanks for all your help.

 

So, this is what I came up with to simplify things.

 

Router (ER605 V2) Port 1 is WAN, Port 5 to Switch A

VLAN 1: 1-5
VLAN 2: 1,5

 

Untagged Ports: 1-4
Tagged Ports: 5

 

Switch A (TL-SG108E) is connected to router (ER605 V2) on Port 1

 

VLAN 1: 1-8

VLAN 2: 1,8

 

Untagged Ports: 2-7

Tagged Ports: 1,8

 

PVID 1: Port 1-8

 

 

Switch B (TL-SG108E) is connected to Switch A on Port 8

 

VLAN 1: 1-8

VLAN 2: 6-8

 

Untagged Ports: 1-7

Tagged Ports: 8

 

PVID 1: Port 1-5,8

PVID 2: Port 6-7

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#10
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Re:Will this VLAN work? (2x TL-SG108E)
2023-03-07 14:42:58

Contacted support, and this is what they said...

 

If you just want to isolate those devices that connect to the switch B, you can directly create a new VLAN on switch B, including the uplink port 8 and downlink port6&7 as untagged, set PVID of downlink ports 6&7 same as the VLAN ID. Please see the link: https://www.tp-link.com/en/support/faq/788/

 

Anyhow....I was way over thinking this.

 

Thanks for everyones help!

 

 

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#11
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