aniladivishnu.2000

all about internet
[OP]
Regulars
Apr 1, 2017
327
33
Hyderabad India
hi til now I thought that the maximum size of MTU is 1472 bites as 28 bites is taken of for some technical useage
but today I tested MTU ping results with ACT Fibernet
the CMD was able to ping up til 1472 bites
how!
acording to many articals on the web it should not.
I should bee able to ping only upto 1464 bites
I wonder can any one help me with this?
@Sushubh
 

leteras

Member
Feb 14, 2019
7
0
The standard MTU for ethernet is 1500 bytes. Since ACT uses PPPoE connection, the encapsulation uses 8 bytes and your MTU will be 1492. Where did you get the 1472 number from?
 

vishalrao

The Global Village Idiot
Regulars
Jan 21, 2005
4,686
285
Pune
8 bytes for PPPoE and the other 28 for TCPIP and IPv4 packet headers?
 


aniladivishnu.2000

all about internet
[OP]
Regulars
Apr 1, 2017
327
33
Hyderabad India
hear is the ping result
with MTU Size of 1472 bites
Microsoft Windows [Version 10.0.17763.475]
(c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\>ping google.com -f -l 1472

Pinging google.com [172.217.163.142] with 1472 bytes of data:
Reply from 172.217.163.142: bytes=64 (sent 1472) time=17ms TTL=57
Reply from 172.217.163.142: bytes=64 (sent 1472) time=16ms TTL=57
Reply from 172.217.163.142: bytes=64 (sent 1472) time=17ms TTL=57
Reply from 172.217.163.142: bytes=64 (sent 1472) time=16ms TTL=57

Ping statistics for 172.217.163.142:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 16ms, Maximum = 17ms, Average = 16ms

C:\Users\
 

aniladivishnu.2000

all about internet
[OP]
Regulars
Apr 1, 2017
327
33
Hyderabad India
it is not A problem for me
I never seen MAX MTU of 1472 before
so i wondered and asked how can it bee?
any way my router is set to automatic IP
MTU size is controled by ACT Fibernet