TP-Link SG3424 L2 Managed Switch Port isolation and loop detection configuration

How to Configure Port Isolation and Loop detection function TP-Link L2 Switch.

L2 switch full form is Layer 2 switch most useful for managing a small and medium size network. There are many brands Layer 2 switch available in market and most of use by Internet provider and network Provider Company. With L2 switch we can manage and monitor small and large network to avoid network issue and problem due to any single and multiple connected clients. TP-Link Port isolation and loop detection configuration same for all web smart switch because interface conman for all switches

When we talk about Port isolation feature in L2 switch than its nothing but a function which make all port isolate from another port. Isolation feature let our port safe from flooding and any broadcasting by particular port will not disturb to another port if isolation is enabled.

Port isolation and loop detection configuration

About Loop detection also a useful feature for Internet provider and any type of industries where large and medium size LAN network used. With loop detection function we make safe network from any looping issue with blocking loop created port block. In this post we will see how to safe network with port isolation and how to configure loop detection function in any brand L2 switch. Loop detection and isolation function configuration same for most of switches so  see how to configure port isolation in TP-Link L2 manage switch and How to configure Loop detection and Port isolation in Voltek switch which can help you to configure all brand L2 manage switch with web interface.

TP-Link TL-3424 L2 Managed Switch Port Isolation Configuration in

With port isolation you can restrict port to communicate each other without configuration of VLAN.

Before start configuration we will see the network diagram below to start configuration with step to step after understanding network.


In this Diagram Port no 2 connected to DHCP Server

Port No. 1 Port 3 and Port 7 connected to PC.

Now we will isolate Port 1 port 3 and port 7 can access DHCP server but Port 1 cannot access port 3 and port 7 cannot access port 1, 3 . Goal is port 1, 3, 7 can communication Port no 2 but cannot communicate each other.

port isolation cisco

Login to TL-3424 L2 manages switch with TP-Link Default IP address and Default user name password which mention in switch box and back side sticker.

After Login go to

Switching->Port->Port Isolation->Port Isolation Config

Port option choose the port number connected with DHCP server

layer 2 lan isolation meraki

Forward Portlist will choose the port number can access to port number 2 (DHCP server)

How to create Layer 2 VLANs on NETGEAR ProSAFE Switches

Now Port number 1 port 3 and port 7 will get DHCP IP Address from DHCP server connected to Port number 2 but port number 1 cannot access port 3 and 7. Port 3 cannot access port and port 1, 7 same for port 7 cannot access port 1 and port 3.

You can choose multiple ports for isolation as per your network requirement. For his you have to choose the port number in drop list which you can to communicate and check mark the port add in that list which can access port number selected in drop list.


TP-Link TL-SG3424 L2 Manages Switch Loop Detection Enable

Loop detection is basic and very important function in manages switch to prevent network down due to looping issue happened in network. With loop detection function switch will take care of any loop related issue if getting from any port and before affecting other ports that port will blocked by switch until loop problem get resolved.

Port isolation and loop detection configuration  function available of most of the brand L2 managed switch and configuration and work for same propose to prevent loop issue occur in any network.

TP-Link SG3424 Loop Detection Enable

Login switches and go to menu

Switching → Port → Loopback Detection

1: Loop detection Status-  by default loop detection is disabled

Click on enable option to enable loop detection function

  1. Select – choose the port number to Enable loop detection

    Status – Choose the Enable option from list

PVLAN Private VLAN Configuration

Click Apply button.



You can change interval time and recovery time as per your choice from given option

Detection Interval – you can choose interval time from 1-1000 second

Automatic Recovery– choose the time for auto recovery time if loop detected in any port

Web Refresh Status – if you want to enable web auto refresh for quick monitoring status

Web Refresh Interval: set refresh time in this box

 Dlink L2 smart switch Vlan configuration

Basic tips – If you are a network administrator or a internet service provider you should use manageable switch to make your network smooth and fast network error detection. With Managed switch you can monitor and fast troubleshooting without down your network long time.

This configuration manual also supported TP-Link many L2 manages switch with same web interface.  See the Model supported for this Manual given below.

Download TP-Link Manual in PDF

JetStream 8-Port Gigabit L2 Managed PoE+ Switch with 2 SFP Slots-

T2500G-10MPS,TL-SG3210, T2500G-10TS

JetStream 16-Port Gigabit L2 Managed Switch with 2 Combo SFP Slots


JetStream 12-Port Gigabit SFP L2 Managed Switch with 4 Combo 1000BASE-T Ports


JetStream 24-Port 10/100Mbps + 4-Port Gigabit L2 Managed Switch

TL-SL5428E, T2600G-28MPS, T2600G-28TS

JetStream 48-Port 10/100Mbps + 4-Port Gigabit L2 Managed Switch

TL-SL3452, T2600G-52TS

JetStream 28-Port Gigabit Stackable L3 Managed Switch







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