> On Wed, May 16, 2012 at 9:40 AM, Indunil Jayasooriya > <induni...@gmail.com> wrote:
>> If yes, How to ping external internet host when that link is DOWN? I find >> it difficult? >> >> I tried it with below commands >> >> >> ping -I WAN1_if_ip www.google.lk >> >> ping -I WAN2_if_ip www.google.lk >> >> >> Some times it works? some times it does NOT? >> >> Could you pls explain why? >> I have been asked by management a few times about why some pings fail when you ping things like google servers and core routers at the ISP. The short answer I give is that things like that are too busy being the Internet to respond to all the ping traffic that doesn't do anything to enable them to be the Internet. Best advice is to consult your routing tables or contact your ISP and have your ifstated ping the far-end of your internet connection. Those systems are typically less busy and have a higher expectation of answering all pings while up.
