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Internet issue after changing WAN to DHCP from PPOE

SCRH IT over 5 years ago

frequently facing “unable to load webpage” issue

Sophos error page on LAN computer browser.

please help

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Nitin Mirchandani over 5 years ago +1

My fellow Etisalat sufferer I have yet to see any ONT provided by Etisalat which does the pppoe for you and provides dhcp to your Wan. Maybe, you have logged into the Huewai provided Fiber box, were…

0 SCRH IT over 5 years ago in reply to SCRH IT

I don't have access to the modem. The ISP manages it.

They are using DHCP i think.
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0 rfcat_vk over 5 years ago in reply to SCRH IT

Hi, you did not answer all of my questions.

ian

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0 SCRH IT over 5 years ago in reply to rfcat_vk

But the DHCP in sophos is not using.
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0 SCRH IT over 5 years ago in reply to SCRH IT

It is disabled
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0 rfcat_vk over 5 years ago in reply to SCRH IT

Based on what you are saying you do not need a Nat on your XG. The failing bit sounds like your isp has issues with their gateway router. You best follow up wit them.

ian

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0 LuCar Toni over 5 years ago in reply to rfcat_vk

NAT in V18 would help in case of such problems. If you are running V18, simply enable the default SNAT on the bottom of the NAT window.

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0 rfcat_vk over 5 years ago in reply to LuCar Toni

Please let me try to understand your answer. You are advising a double Nat might fix his website access, but if he is using the web proxy it will not go through the Nat, correct?

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0 BasSanders over 5 years ago

Can you try to (temporarily) set your MTU size to 1250 on the PPPoE interface? Chances are high it might work after that.

After implementing PPPoE we usually do several pings with different framesizes which quickly show the max MTU on the link.

Fragmentation still is a thing on XG...
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0 LuCar Toni over 5 years ago in reply to rfcat_vk

Basically a SNAT will not "harm". SNAT is something, this will properly not fix the root cause but can fix many problems in the own network.

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0 rfcat_vk over 5 years ago in reply to BasSanders

He has changed from PPPoE to DHCP, so changing MTU on PPPoE will not be effective, but the one thing he does not show is the MTU setting on his WAN with new settings.

Ian

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