Correct configuration for Wan PPPOE

[peterwkc]

Dear forumer, I had install new opnsense 24.1 but I could not connect to internet.
I cannot get up address. I had configure igb1_vlan500.
But at interface assignment has three selections. Please help the correct configuration

[RamSense]

maybe this helps: https://forum.opnsense.org/index.php?topic=21207.0

[peterwkc]

The link does not point me the right direction. Please tell me what I'm doing wrong.

[meyergru]

Keeping us guessing, for starters?

It is not particularly goal-oriented to tell basically nothing of what you did, then being pointed to a very detailed instruction on how to do what you seem to intend (have I guessed correctly?) and then only asking again what you did wrong.

[peterwkc]

Sorry to tell you that I reinstall opnsense to 22.7 but still cannot get ip address but when using normal router it has wan ip. Is it my ISP deny using firewall router. How to solve it? All using default configuration.
When reboot pc, it has warning on configuring wan. The error is attempt to add IP address after finalize. How to solve it??

[meyergru]

Could be anything from missing or wrong PPPoE credentials (if you need that) to a MAC-based authorization scheme your ISP uses to identify his own routers to some special DCHP options you have to or may not set.

If this worked once before, try to restore the old configuration. If it then still does not work, something must have changed (thinking of a hardware defect or ISP reconfiguration).

[peterwkc]

I triple check the credentials input is correct. What could be the issue? I believe is ISP reconfiguration.what DHCP options need to set???

[meyergru]

There are plenty of potential options for DHCP and which they use or need is entirely determined by your ISP. If they deliberately did something to lock you (or more specifically: customer-owned routers) out, they probably will not tell you what the difference is.

I could not even guess what the difference is since you did not tell who your ISP is or what access technology they provide or ISP router type, your own OpnSense hardware or anything.

If I were you, I would try to go forward by asking your ISP what spcific demands they have and if that does not succeed, ask in a provider-specific forum if anybody knows how to circumvent potential locks. Either way, it might be helpful to provide at least some information on your part and not just asking "it don't work anymore - why?".

Even then, this only applies iff it worked with a previous OpnSense version before and you have restored that version and configuration and are really sure that no hardware problem is the culrpit.

[netnut]

I triple check the credentials input is correct. What could be the issue? I believe is ISP reconfiguration.what DHCP options need to set???

What are the requirements of your ISP ? OPNsense let you configure almost any possible connectivity option, but you need to know _upfront_ what needs to be configured. Only than you can troubleshoot.

If you're using PPPoE, IPv4 assignment is handled by PPP,. there is no DHCP involved. Again, depending on your ISP requirements, additional services can provisioned on top of your existing PPPoE IPv4 connection like IPv6 PD and the like.

As explained in the already linked HowTo, some ISP deliver additional services on seperate VLAN's. The HowTo shows a scenario where IPv4 is configured with PPPoE on VLAN id 6, on top of that IPv6 Prefix Delegation (using the established IPv4 PPP connection) and another VLAN (id 4) which uses plain DHCP {with custom ISP specific DHCP options) for IPTV (in most cases multicast based).

So, to wrap it up, contact your ISP, aquire all technical information of the specific ISP configuration requirements. From this point there are many people here that can help.