Netgear issues with BSNL Dataone Broadband

I was unable to browse some websites, including yahoo.com through my Netgear DG834G ADSL2+ modem with BSNL Dataone Broadband connection.

The problem was due to WAN MTU Size. On changing the default MTU 1492 bytes to 1430 bytes, all websites started loading.

From Netgear:

Setting MTU size is a process of trial-and-error: start with the maximum value of 1500, then reduce the size until the problem goes away. Using one of these values is likely to solve problems caused by MTU size:

• 1500. The largest Ethernet packet size; it is also the default value. This is the typical setting for non-PPPoE, non-VPN connections. The default value for NETGEAR routers, adapters and switches.
• 1492. The size PPPoE prefers.
• 1472. Maximum size to use for pinging. (Bigger packets are fragmented.)
• 1468. The size DHCP prefers.
• 1460. Usable by AOL if you don't have large email attachments, etc.
• 1430. The size VPN and PPTP prefer.
• 1400. Maximum size for AOL DSL.
• 576. Typical value to connect to dial-up ISPs.

http://support.netgear.com/app/answers/detail/a_id/1153/~/mtu,-partial-loss-of-internet-connection,-and-performance

Happy Browsing