I keep getting emails from my Vigor 2830Vn saying
"Your Vigor2830 Series WAN2 interface was offline just now, Please notify the network admin for check."

I have 2 x Business ADSL lines ( static WAN IP's, 20:1 ratio ) each get 13Mb/s down and 830Kb/s up
WAN2 is via a Vigor 120 V1

This emails get sent out mostly in the mornings from around 6:30 to 9am , it looks like it maybe due to the LAN2 ( guest Network ) as most guests where gone my 9am to the TT races ( my guest network comprices of 4 x Draytek AP700 connected to a HP 2626PWR PoE switch which has a uplink to a PC Server running untangle Server for logins and protection which connects to port 4 of the 2830Vn Router )