er6120 setup

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er6120 setup

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er6120 setup
er6120 setup
2022-04-01 15:21:44
Model: TL-ER6120  
Hardware Version: V3
Firmware Version: 3.02

How do I set this up?

I have 1 wan connection at this time.

 

WAN1 connected to Centurylink dsl modem

Static ip

Subnet mask is 255.255.255.0

Link is up

default gateway is 192.168.1.1

primary dns is 205.17.3.65

secondary dns is 205.17.2.65

vlan 336

 

LAN setting in er6120

ip 192.168.1.1

Subnet 255.255.255.0

Management Vlan ---

 

Dhcp server

Starting address 192.168.1.4. I left 2 and 3 available for modems if needed.

Ending address 192.168.1.254

Lease time 120

Primary DNS 8.8.8.8

Secondary 9.9.9.9

Status enable checked

 

IPTV off

I haven't done anything with

MAC, Switch or VLAN

IP6 is off.

 

With my dsl modem connected to wan1 and Lan connected to my laptop I can connect to the er6120 on 192.168.1.1.

Network status shows 192.168.1.170 with no internet connection.

 

My DSL modem has dhcp turned off and is accessable with a direct connection to my laptop on 192.168.0.1. Static ip on the laptop of 192.168.0.170

With a direct connection to the modem and the laptop I have internet access.

I also have internet access if I turn on dhcp on the modem and set my laptop to pick up an ip address. No er6120 connections.

 

Why can't I get internet access when the modem and the laptop are connected to the er6120?

 

Where do I set the lan address on the wan1 modem, or do I turn off dhcp on the modem?
 

 

I want all connections to pick up an ip address in the 19.168.1.4-254 range. I assume that it will come from the er6120.

 

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#1
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6 Reply
Re:er6120 setup
2022-04-01 17:20:25

  @gjunk 

 

Did you get a static IP address from Centurylink?

Kris K
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#2
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Re:er6120 setup
2022-04-04 06:05:38

  @gjunk 

Hello and welcome.

First, let's say that your modem is a modem router. From your IP, that's a modem router for sure. About the VLAN that you configured on ER6120, that does not seem to be right because you are connected to a LAN(from your modem).

So, the correct settings should be:

WAN settings on ER6120, if you choose Static IP as the connection,
IP is your Static IP which y our prefer. This should be an IP from the subnet 192.168.0.1. I assume you have 192.168.0.2 to 192.168.0.254 available.

Subnet: 255.255.255.0 which corresponding with the 254 IPs avail.

Gateway IP: 192.168.0.1 which is your modem router's LAN IP.

For the DNS, you can choose whatever suitable for you. Your ISP may get their own DNS server or you choose public one like 8.8.8.8 or 1.1.1.1

VLAN, I don't think that you need a VLAN when you use a LAN connection like this. Just don't check it and put numbers there. Leave it alone.

 

For the LAN settings on ER6120, you choose 192.168.1.1, that's right.

When you connect a router behind a router, their LANs cannot be the same. If they both use the same subnet like 192.168.0.1, this will cause a conflict and lead to a disaster in your network.

DHCP, it's up to you.

 

So, that's it. Think this can help you out.

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#3
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Re:er6120 setup
2022-04-04 08:19:04

Yes. I have a static ip from centurylink.

 

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#4
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Re:er6120 setup
2022-04-04 09:18:11

 

There is no vlan set up.

 

The ER6120 is set with the lan at 192.169.1.1 and dns at  8.8.8.8 and 9.9.9.9

I can reach it and login at 192.168.1.1 with my laptop set to pick up an automatic ip.

 

My modem/router is a Centurylink router with a static ip from Centurylink.

 

The internal lan on the centurylink router is on 192.168.0.1.

When I connect the century link router directly to my laptop it grabs an ip in the 192.168.0 subnet and gives me internet access.

 

Wan1 is set as static with the centurylink static ip, gateway of 192.168.1.1 and dns of 205.17.3.65(centurylink).

The link is up.

When I connect the centurylink modem to wan1 on the ER6120 and the laptop to the lan connection on the ER6120 

 

I disable and the enable the network connection so it refreshes the connection.

The laptop picks up an ip address in the 192.168.1 subnet.

It does not have internet access.

I can access the ER6120 at 192.168.1.1.

 

Why won't it give me an internet connection through the ER6120?

 

 

 

 

 

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#5
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Re:er6120 setup
2022-04-04 15:45:31

  @gjunk 

 

If you put the ER6120 WAN on the Centuarylink LAN subnet (192.168.0.x) with the Centuarylink LAN (192.168.0.1) as the default gateway, you should be able to access Internet. Use an IP address, not a DNS name, to test it. And, do not reuse subnets. It’s messy and you can easily get confused.

 

Why do you put a router behind a router? Somebody needs to have a really good reason to do that and, in a home network, there is usually none. Well, you can still use the same devices, but just eliminate one routing interface. Probably the easiest way to do that in you situation is to connect a Centuarylink LAN port to a ER6120 LAN port. Than your ER6120 LAN should be also on the Centuarylink LAN subnet. It would be also a good idea to disable the DHCP server on the ER6120.   

Kris K
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#6
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Re:er6120 setup
2022-04-07 08:05:38

gjunk wrote

 

There is no vlan set up.

 

The ER6120 is set with the lan at 192.169.1.1 and dns at  8.8.8.8 and 9.9.9.9

I can reach it and login at 192.168.1.1 with my laptop set to pick up an automatic ip.

 

My modem/router is a Centurylink router with a static ip from Centurylink.

 

The internal lan on the centurylink router is on 192.168.0.1.

When I connect the century link router directly to my laptop it grabs an ip in the 192.168.0 subnet and gives me internet access.

 

Wan1 is set as static with the centurylink static ip, gateway of 192.168.1.1 and dns of 205.17.3.65(centurylink).

The link is up.

When I connect the centurylink modem to wan1 on the ER6120 and the laptop to the lan connection on the ER6120 

 

I disable and the enable the network connection so it refreshes the connection.

The laptop picks up an ip address in the 192.168.1 subnet.

It does not have internet access.

I can access the ER6120 at 192.168.1.1.

 

Why won't it give me an internet connection through the ER6120?

 

 

 

 

 

  @gjunk 

 

What you did is right. But, it is not recommended like the KJK said. A router(ER6120) behind a router(centurylink modem router). If you can connect directly to the centurylink, that would be great. If not, you set the modem router to bridge mode and connect ER6120 behind it.

 

For your case, config for LAN is good.

WAN is not right on ER6120.

If you choose Dynamic IP as the connection type on ER6120, you don't have to configure anything. Just plug and play.

If you use Static IP on ER6120, your WAN IP should be an IP from the LAN of Centurylink. > e.g. 192.168.0.2

Subnet should match with the LAN config of Centurylink. > 255.255.255.0

Gateway is the IP of Centurylink > 192.168.0.1

DNS, whatever the servers you prefer.

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#7
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Replies: 6

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