TL-SG108E v3 & management IP vs VLAN

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TL-SG108E v3 & management IP vs VLAN

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TL-SG108E v3 & management IP vs VLAN
TL-SG108E v3 & management IP vs VLAN
2018-06-07 04:01:01
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Hello,

I am using a TL-SG108E v3 with the latest firmware (TL-SG108E(UN)_V3_20171214), configured with 802.1q VLANs as follows:
Port 1: untagged VLAN 1, PVID 1, tagged VLANs 100, 101, 102, 201, 202 & 203, connected to the upstream switch
Port 2: untagged VLAN 1, PVID 1, tagged VLANs 100, 101 & 102, connected to a TP-Link EAP245 access point
Port 3: untagged VLAN 201, PVID 201
Port 4: untagged VLAN 202, PVID 202
Port 5: untagged VLAN 203, PVID 203
Port 6-8: untagged VLAN 101, PVID 101

The switch connected to port 1 is configured for the same VLANs (of course), and PVID 100

The issue I have is that the VLAN used for the management webpage isn't consistent or correct: sometimes VLAN 100 is used, sometimes 101, and with DHCP enabled this lead to an IP being issued on VLAN 101, but later on the renewal is requested on VLAN 100.
I would like to have the management webpage/IP address to remain at VLAN 100

The TP-Link EAP245 has the option of setting the management VLAN, which makes things easy and consistent, but the TP-SG108E doesn't have such option, making it almost impossible to use the VLAN configuration without having to physically connect the pc used to change the configuration.

Is there a way of preventing this issue, or will a fix be made available ?

Kind regards,
Wesley
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Re:TL-SG108E v3 & management IP vs VLAN
2018-06-07 20:43:50

WesleyD wrote

Is there a way of preventing this issue, or will a fix be made available ?


Yes: always use static IPs for stationary devices such as switches or APs. DHCP is fine for mobile devices, but not for stationary devices.

BTW: If the device connected to port 1 uses VLAN 100 as its Primary VLAN (PVID!), then the TL-SG108E should also use this VLAN ID for the Primary VLAN. Depending on your settings on both switches, Ethernet frames in the Primary VLAN will be untagged meaning that the switch connected on port 1 will remove tags from frames in VLAN 100 on egress! TL-SG108E then will assign them to VLAN 1 and also remove tags on egress. That's called Default or Native VLAN.
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Re:TL-SG108E v3 & management IP vs VLAN
2018-06-08 03:55:57
Hello, originally my intention was to have VLAN 1 as primary VLAN on port 1 and the management on VLAN 100, but I now changed it so VLAN 1 is no longer in use & PVID of port 1 is 100 and it seems to work.
I can get by without VLAN 1 on that switch, so thanks for the hint on the PVID setting.

It still would be a lot easier if the management VLAN was explicitly configurable :-)

Kind regards,
Wesley
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Re:TL-SG108E v3 & management IP vs VLAN
2018-06-08 06:30:03

WesleyD wrote

It still would be a lot easier if the management VLAN was explicitly configurable :-)


That's correct, but it's the price to pay for Easy Smart Switches being so cheap. Smart Switches (w/o "Easy") do have a management VLAN, indeed.
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