Model : VigorPro5510
SN: 07C001237964
Firmware ver. 3.3.3.4

I have “VigorPro5510 firewall”. I am trying to configure it for static IP. Internet is working but the performance is very poor, getting to many drops, massagers gets sign out frequently, some user can browse the internet at same time some cant browse.


Network setup : (before installation of VigorPro 5510 firewall)
1) One domain controller also working as DHCP server.
2) 50 Client PC’s (OS – windows Xp pro sp/2/3, Windows 7)
3) One Managed Netgear network switch FSM 726 (Nothing is configured in the switch, using only basic switch function)
4) Internet connection : (Have two connections)
a. 1st internet connection (Service provider : TATA indicom) : ISP has provided “Billion ADSL modem” which is configured as PPPoE with static IP address.
b. 2nd Internet Connection (Service Provider : Reliance communications ) : Using Dlink DIR 300 DSL modem, This have dynamic IP address.


Network Setup after installation of VigorPro 5510 firewall

1. Internet cable from 1st ISP (TATA indicom ) goes to “Billion ADSL modem router”. Now I configured this modem in bridge mode (earlier it was in PPPoE mode) (ADSL modem IP : 192.168.1.1)
2. From Billion ADSL modem cable goes to VigorPro 5510 firewall (IP : 192.168.1.2). Firewall is configured as follows

Please help me with this. Why internet connection goes down after some time.