IP-MTU & MTU

[arun kumar]

Hi...

As per my understanding, in Cisco if I set MTU to 1500 that means Layer2 Payload... i.e--- Data+L3 Header--- Excluding Layer 2 Header

If I set IP-MTU, it means Layer3 Payload.... i.e---- Data+TCP/UDP header---Excluding Layer 3 Header...

So if I set IP MTU of an interface to be 1500 bytes will MTU of that inteface be automatically increased i.e--- IP-MTU + Layer Header.. or do I need to increase the MTU as well....

Thanks in advance...

[guruprasadr]

HI Arun Kumar,

Refer link below:

http://www.cisco.com/warp/public/105/pmtud_ipfrag.html

http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a0080435c3e.html#wp1049814

Pls Rate if HELPS

Best Regards,

Guru Prasad R