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ip tcp adjust-mss causing browsing problems

Cisco Router causing browsing problems

after installing a cisco router I saw that users were not able to browse the internet, strangely enough they could open the home page or the landing page of a website but could browse no further, as in click a link on the site or view the next page. after a few hours of troubleshooting it turned out to be a really simple fix all I had to do was make a minor tweak to the mass adjust.

ip tcp adjust-mss 1300

What does the ip tcp adjust-mss do.

Any packet that contains an initial tcp header flowing through your router will be examined against the mss. The mss in the header will be lowered to this amount if the setting is lower than what is in the header. If the header value is already lower, it will flow through unmodified. The end hosts will use the lower setting of the two hosts.