How IPSec Overhead effects MTU?

Hello

I saw all the abilities/combinations of IPsec with different security algorithms and modes, but I have the question, what level of overload is finally added to a package and how it effects MTU (e.g. the value of the MTU for an Ethernet frame is 1400 bytes) in each case?

Since it varies I don't know how to answer. Here's a great article explaining...

http://www.iphelp.ru/doc/3/Cisco.press.Comparing.designing.and.deploying.VPNs.Apr.2006/1587051796/ch07lev1sec4.html

If you did not know:

You can test the mtu with the ping command. #ping 192.168.0.1 size 1423 df - bit

Tags: Cisco Security

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