Some webpages not getting opened from a particular POP.

    Ours is an ISP and we have one central node and 3 POPs located throughout the city. All our webservers and core routers are located at central node. We are hosting our website at a websever which is at central node.We are running OSPF for our internal network and BGP with our gateway.
    Now the problem is - from one particular POP, we are  able to get all websites except our own website. It is observed that, some webpages of our website, which has few gifs, are getting opened properly but not all the webpages. Some webpages gets partially opened but not fully. Same problem is observed for our Intranet website which is on another webserver at central node. There is no problem for all other websites which are outside our network.
   This problem is not observed from other 2 POPs hence it cannot be website content problem. The configuration of all the 3 Routers at located at 3 POPs is same.
    Can anybody suggest what may be the problem ?
bhujbalAsked:
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FerrostiCommented:
If you can only open some webpages it is most likely a MTU problem.
Try to ping the non-working servers name. Watch out, whether ping resolves it´s name. It will not get any result. Then ping with other options:
ping -l 1500 www.someserver.tld
Decrease the 1500 in steps of 8 and retry. The value should not be below 1436.
To resolve this problem you will need to use a program like DRTCP and set the MTU to the value you get from ping.

If you cannot access the companies website check for DNS issues first. Maybe not all images are located at the webserver itself, but referred?
The problem could also be due to the issue above.
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