Schlagwort-Archive: solaris

Test your MTU size with ping (JunOS/IOS and some more)

Here are some examples for testing MTU size with ICMP request/reply (aka Ping) and different operating systems. The list show the options to test your MTU with 1500 byte packets and don’t fragment bit set. If you get a reply, your MTU is fine.

OS Version Size option DF-bit option Example command
IOS (Cisco) 12.4 size 1500 df-bit ping ip 10.0.0.1 size 1500 df-bit
JunOS (Juniper) 11.4 size 1472 do-not-fragment ping 10.0.0.1 size 1472 do-not-fragment
VRP (Huawei) 5.70 -s 1472 -f ping -s 1472 -f 10.0.0.1
Windows XP -l 1472 -f ping 10.0.0.1 -l 1472 -f -t
Linux Open-SuSE 11.4 -s 1472 -M do ping 10.0.0.1 -s 1472 -M do
Solaris 11 1480 not implemented ping 10.0.0.1 1480