@pekseg just seems to be a sequence of service booting up while dhcp/routing are not high priority. So even your wan is up, you gotta wait for other lan services to boot up. Then NAT gets to work.

You might get a flagship model and compare that speed if still under the return window.

Hi @pekseg 

Thanks for posting in our business forum.

ER605 is not a powerful device and it is a dual-core device if I don't recall it wrong.

So you mentioned two things here, DDNS update and PPPoE termination. I need to determine what might relate to the problem you described here.

If you don't have DDNS, disable it, will this still connect slow, your PPPoE WAN?

I think it might not relate to the DDNS, so let's check this first.

Hi @pekseg 

Thanks for posting in our business forum.

pekseg wrote

  @Clive_A 

I think I didn't mention DDNS at all, but just to be clear: I'm using DDNS, but imho DDNS has nothing to do with my issue. 

You said DDNS in the OP.

pekseg wrote

My ISP provider is randomly request for PPPoe termination - mainly due to dynamic dns update. 

 

When this happens (between every 24h-72h) , I see that the connection is dropped and the routing starts to work only after 4-5 minutes. I decreased all settings (online detection etc) but it didn't really help. To monitor the network, I installed a syslog agent, and there I found out that actually the reconnect happen quick (in 20s) but then somehow the routing is still not working for 2 more minutes. 

 

Here is a log: 

As you can see, the disconnect happened at 12:47:00. PPPoe re-established at 11 sec. later. Online detection shows online status at 12:47:20. 

The routing started at 12:50:00 exactly, so 2 and half min. later. Can anyone explain why? (there are no relevant logs after this timestamp)

In the lab test, at most, the reestablish of PPPoE would take 30 seconds to 1 minute. It takes a few seconds, usually.

However, in your case, it takes 2 minutes. Here are my questions:

1. Have you tried Wireshark and see how the ISP server respond to your PPPoE? Is the server too slow to respond or it is the router? Which is the reason/cause you are looking for.

2. Do you have a complicated setup with multiple rules? ACL and NAT-related rules. If you have, how many of them?

Are you okay to share your backup with us privately if a case is created?

Update:

3. I request the full log of your two and a half minutes later where the syslog shows the connection is done. The screenshot you pasted is not a full log.

4. Do you judge the slow PPPoE connection by reading the log or the real experience?