Welcome to TP-LINK Tech Support Forum
+ Reply to Thread
Results 1 to 4 of 4
  1. #1

    Exclamation TL-SG108E cannot ping on the same vlan

    Model :

    Hardware Version :

    Firmware Version :

    ISP : [/COLOR]

    Hi All,

    Just bought TL-SG108E to accomodate my new Xiaomi pro router.
    Currently my setup is like this:

    Modem(port 1) -- TL-SG108E (port 1) -- Xiaomi Router pro (port 2)


    In order for me to allow the xiaomi to pppoe to modem I need to set up VLAN tagging with ID500 (from internet provider)

    The setup of TL-SG108E:

    VLAN ID: 500
    Member Ports: 1 - 6
    Tagged Ports: 1
    Untagged Ports : 2-6

    I have setup PVID 500 to port 2-6.

    Result:
    - I can connect wifi through xiaomi router pro and browse internet
    - All the device that connected to xiaomi router switch also work

    The problem:
    - Another host that connected through port 3-6 on TL-SG108E cannot connect to router.
    - arp -a doesnt show much info

    Any of you could give some solution for this please.

    Thanks,

  2. #2
    I suggest you upload the screenshots about your configuration. How did you test? used ping command or access the web interface or router?

    Did you enable firewall(block ping from WAN port) in xiaomi router? or disable the remote management in xiaomi router?

  3. #3
    Members R1D2 is on a distinguished road
    Join Date
    Dec 2015
    Posts
    1,005
    Quote Originally Posted by wsokc View Post
    Currently my setup is like this:

    Modem(port 1) -- TL-SG108E (port 1) -- Xiaomi Router pro (port 2)

    In order for me to allow the xiaomi to pppoe to modem I need to set up VLAN tagging with ID500 (from internet provider)
    Not sure what you want to achieve with such a setup. Normal setup for a router connecting a LAN to the Internet via PPPoE on the WAN side is this:

    Modem <--> (WAN port) Xiaomi Router (LAN ports) <--> TL-SG108E <--> more devices

    Since a modem's PPPoE connection just allows exactly one device at each side of the point-to-point link, a router in between those two devices connected through the ISP's modem does not make any sense to me. Of course the router will block incoming requests from the WAN, so no wonder that you can't ping it through the switch in your setup.

    If you insist to carry WAN and LAN traffic through the SG108E, use this setup:

    Code:
    Modem  <--> (port 1) TL-SG108E VLAN member 500 PVID=500 (WAN side)
    Xiaomi <--> (port 2) TL-SG108E VLAN member 500 PVID=500
                         TL-SG108E (ports 3-8) <--> more devices Default VLAN 100 PVID=100 (LAN side)
    Last edited by R1D2; 09-04-2017 at 18:12.

  4. #4
    Quote Originally Posted by R1D2 View Post
    Not sure what you want to achieve with such a setup. Normal setup for a router connecting a LAN to the Internet via PPPoE on the WAN side is this:

    Modem <--> (WAN port) Xiaomi Router (LAN ports) <--> TL-SG108E <--> more devices

    Since a modem's PPPoE connection just allows exactly one device at each side of the point-to-point link, a router in between those two devices connected through the ISP's modem does not make any sense to me. Of course the router will block incoming requests from the WAN, so no wonder that you can't ping it through the switch in your setup.

    If you insist to carry WAN and LAN traffic through the SG108E, use this setup:

    Code:
    Modem  <--> (port 1) TL-SG108E VLAN member 500 PVID=500 (WAN side)
    Xiaomi <--> (port 2) TL-SG108E VLAN member 500 PVID=500
                         TL-SG108E (ports 3-8) <--> more devices Default VLAN 100 PVID=100 (LAN side)
    Hi Thanks for your help...

    Yes, that was the dumbest question I ever asked.
    I totally forgot the Xiaomi only connected to Port 2 on VLAN Switch which is the WAN port, while the LAN port not yet connected.


 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Copyright 1996-2017 TP-LINK Technologies Co., Ltd. All rights reserved.