Power down and WAN isn't UP after power ON

[MiCk]

Hello,

My ISP modem has booting time longer than Asus RT-N66U.
So I have problem after power down with again connection WAN UP.

I use on WAN tab:
- WAN Connection Type: Automatic ISP
- DHCP query frequency: Aggressive mode or Normal mode (both tested)

It's some possibility to add some manual record in services-start to force WAN up or other way?

 

[RMerlin]

Usually, setting DHCP mode to Normal should work even with slow modems. If the modem isn't properly working yet, DHCP will ask again for a new lease 2 minutes later.

What are you getting in your System Log regarding WAN?

 

[MiCk]

Records on log show WAN connection UP after 1:15 and at the first step has a local IP adres from ISP

Jan 1 01:00:34 dhcp client: bound 192.168.100.10 via 192.168.100.1 during 30 seconds.
...
Jan 1 01:01:15 dhcp client: bound 84.10.xx.xx via 84.10.xx.yy during 3021 seconds.
...
Jan 1 01:01:15 dhcp client: bound 84.10.xx.xx via 84.10.xx.yy during 3021 seconds.

...but the status is still Disconnected on tab - Network Map in router and internet connection on local machines not exist.

After press Apply on WAN tab is get a log:

Jan 1 01:08:05 rc_service: httpd 317:notify_rc restart_wan_if 0
Jan 1 01:08:05 dnsmasq[713]: read /etc/hosts - 5 addresses
Jan 1 01:08:05 dnsmasq[713]: read /etc/hosts.dnsmasq - 9 addresses
Jan 1 01:08:05 dnsmasq-dhcp[713]: read /etc/ethers - 23 addresses
Jan 1 01:08:05 dnsmasq[713]: using nameserver 62.179.xx.xx#53
Jan 1 01:08:05 dnsmasq[713]: using nameserver 62.179.xx.xy#53
Jan 1 01:08:05 stop_wan(): perform DHCP release
Jan 1 01:08:05 kernel: br0: port 1(vlan1) entering disabled state
Jan 1 01:08:05 kernel: br0: port 1(vlan1) entering listening state
Jan 1 01:08:05 kernel: br0: port 1(vlan1) entering learning state
Jan 1 01:08:05 kernel: br0: topology change detected, propagating
Jan 1 01:08:05 kernel: br0: port 1(vlan1) entering forwarding state
Jan 1 01:08:07 dnsmasq[713]: read /etc/hosts - 5 addresses
Jan 1 01:08:07 dnsmasq[713]: read /etc/hosts.dnsmasq - 9 addresses
Jan 1 01:08:07 dnsmasq-dhcp[713]: read /etc/ethers - 23 addresses
Jan 1 01:08:07 dnsmasq[713]: read /etc/hosts - 5 addresses
Jan 1 01:08:07 dnsmasq[713]: read /etc/hosts.dnsmasq - 9 addresses
Jan 1 01:08:07 dnsmasq-dhcp[713]: read /etc/ethers - 23 addresses
Jan 1 01:08:07 dnsmasq[713]: using nameserver 62.179.xx.xx#53
Jan 1 01:08:07 dnsmasq[713]: using nameserver 62.179.xx.xy#53
Jan 1 01:08:07 start_nat_rules: apply the nat_rules(/tmp/nat_rules_eth0_eth0)!
Jan 1 01:08:07 dnsmasq[713]: exiting on receipt of SIGTERM
Jan 1 01:08:07 dnsmasq[762]: started, version 2.67 cachesize 1500
Jan 1 01:08:07 dnsmasq[762]: compile time options: IPv6 GNU-getopt no-RTC no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack no-ipset no-auth
Jan 1 01:08:07 dnsmasq[762]: warning: interface ppp1* does not currently exist
Jan 1 01:08:07 dnsmasq[762]: asynchronous logging enabled, queue limit is 5 messages
Jan 1 01:08:07 dnsmasq-dhcp[762]: DHCP, IP range 192.168.8.2 -- 192.168.8.39, lease time 1d
Jan 1 01:08:07 dnsmasq[762]: read /etc/hosts - 5 addresses
Jan 1 01:08:07 dnsmasq[762]: read /etc/hosts.dnsmasq - 9 addresses
Jan 1 01:08:07 dnsmasq-dhcp[762]: read /etc/ethers - 23 addresses
Jan 1 01:08:07 dnsmasq[762]: using nameserver 62.179.xx.xx#53
Jan 1 01:08:07 dnsmasq[762]: using nameserver 62.179.xx.xy#53
Jan 1 01:08:07 rc_service: udhcpc 744:notify_rc stop_upnp
Jan 1 01:08:07 rc_service: udhcpc 744:notify_rc start_upnp
Jan 1 01:08:07 miniupnpd[778]: HTTP listening on port 43693
Jan 1 01:08:07 miniupnpd[778]: Listening for NAT-PMP traffic on port 5351
Jan 1 01:08:07 ddns: IP address, server and hostname have not changed since the last update.
Jan 1 01:08:10 WAN Connection: WAN was restored.

and the internet connection appear.

 

[RMerlin]

Your log shows that the LAN IP lease only has a 30 seconds duration. That means that after 30 seconds it should expire, and then your router will request a new IP, at which point it should hopefully be from your ISP. If it's still local, then the same thing will re-happen 30 seconds later.

 

[MiCk]

Always about time 1:15 log show that router getting valid IP from ISP but the status on tab Internet map is still Disconnected and internet connection not exist.
I have to manually press the Apply on the WAN tab and then connection run rapidly.
This isn't comfortable when I lost connection with my NAS and other devices when I'm outside.

 

[RMerlin]

I don't see why that would be the case, especially if you do get a valid DHCP lease at that point.

Why not just disable the DHCP server inside your modem then? Sounds like it's configured to act as a router in addition to a modem.

You could always try to put a sleep 120 followed by a service restart_wan in services-start. A bit kludgy, but it might do the trick.

Ideally, you'd want a wan-start script that's more complex: check if the IP is a private IP, if it is then sleep 30 secs, then restart WAN.