Packet loss when MTU is set to 1450 to 1500 in cisco 2911 router

[Abdur Rahim]

Hi, When I try to ping setting MTU 1450 to 1500 from my Cisco 2911 router to my PC, It shows about a 10% loss. The other MTU size doesn't have any problem. My connection is P2P. All three interfaces show this problem. Please help me.

[MHM Cisco World]

ping 1450 with IP head 20 bytes it OK, unless you modify the ip mut of interface, did you modify the default value ?

[Abdur Rahim]

My problem was solved when I connect the router to my existing Cisco switch. I did a p2p connection and a default route. Maybe the issue is with the NIC of my PC which didn't support that MTU. What do you think?