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ArsonSmith
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Jumbo frames on linux guest

We setup Jumbo Frames throughout all our network settings and have it working. The interesting thing and my question as to why:

On linux guests (all I've tested) and vmxnet3 even if the MTU is set to 1500, ping -s 9000 host works just fine.

Is this to be expected? Is there no need to ifconfig eth? mtu 9000 on the hosts like in the physical world?

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Paulg087
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The packets are likely being fragmented.

try a 'ping -s 9000 -M do x.x.x.x ' to set the no fragment bit. Additionally, try pinging with a packet size of 10000, if those work fine, the packets are being fragmented.

Hope this helps!

-Paul

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Paulg087
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The packets are likely being fragmented.

try a 'ping -s 9000 -M do x.x.x.x ' to set the no fragment bit. Additionally, try pinging with a packet size of 10000, if those work fine, the packets are being fragmented.

Hope this helps!

-Paul

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