Hi Dave,
My memory was that in data center or cloud environment it is desirable to set
MTU to jumbo frame size to avoid fragmentation by default. Thus the question
would be if it is reasonable to set default MTU size to 9000 for VPP and what
kind of problem is it causing that would be fixed by changing it to 1500.
Regards,
John
From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Dave Barach via
Lists.Fd.Io
Sent: Wednesday, February 26, 2020 8:40 AM
To: vpp-dev <vpp-dev@lists.fd.io>
Cc: vpp-dev@lists.fd.io
Subject: [vpp-dev] Change interface default MTU to 1500
Folks,
I'm considering changing the default interface MTU to 1500, from the current
value of 9000:
ethernet_register_interface (...)
{
<snip>
/* Standard default ethernet MTU. */
vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, 9000);
<snip>
}
I've pinged some folks, and nobody remembers why we're setting the default MTU
to 9000.
Thanks... Dave
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