>
>Hi,
>
>Is there a way to configure MTU for dpdk and vhost ports from its default 1500
>?
>I read, "with OVS, Normally the MTU should be changed using operating system
>specific
>interfaces (e.g. ifconfig).", but as they are dpdk ports, how can i configure
>them ?
>
Hi Kapil,
Depending on the version of OvS that you're using, you may use the Interface's
'mtu_request' field to modify the MTU of DPDK-type ports.
From INSTALL.DPDK-ADVANCED.md:
"By default, DPDK ports are configured with standard Ethernet MTU
(1500B). To
enable Jumbo Frames support for a DPDK port, change the Interface's
`mtu_request`
attribute to a sufficiently large value.
e.g. Add a DPDK Phy port with MTU of 9000:
`ovs-vsctl add-port br0 dpdk0 -- set Interface dpdk0 type=dpdk -- set
Interface dpdk0 mtu_request=9000`
e.g. Change the MTU of an existing port to 6200:
`ovs-vsctl set Interface dpdk0 mtu_request=6200`"
This functionality is currently supported on OvS Master and 2.6 branches.
Hope this helps,
Mark
>Regards
>Kapil
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