I have problem in my workplace.
1) Don't have enough IP address coz the ISP only provide 30 Fixed/static IP to the network with Fixed DNS server setting.( i have 85 pc)
2) I'm not having problem to connect a pc to internet (manual ip/dns server setting). But when i connect a gorgoyle 1.5.9 router tplink mr3420 to the isp router all pc connect to this router cannot acces internet.
Router setting.(TLmr3420 connect to allied telesis router AR7700 via WAN port)
* WAN setting - Static IP (wired)
Static IP - xx.xx.xx.30 (ISP give 30-60)
subnet mask - 255.255.255.0
Gateway - xx.xx.xx.29 (router ip)
*LAN Setting - router ip- 192.168.2.1 (TL MR3420 ip)
subnet mask- 255.255.255.0
DNS servers- 10.xxx.x.17 ( provide by ISP and you cannot use other dns such as google dns server)
DHCP in Enable.
above setting is use on pc on my workplace network and have no problem connect to internet.
I can't temper the configuration on allied telesis router because it have terms and aggreement from ISP.I can connect to this router via telnet only and not via browser because ISP have delete the WEB GUI file.