Set the MTU of an Amazon Direct Connect private virtual interface
If your virtual interface has both an IPv4 and IPv6 BGP peering session, you can delete one of the BGP peering sessions (but not both). For more information about MTUs and private virtual interfaces, see MTUs for private virtual interfaces or transit virtual interfaces.
You can set the MTU of a private virtual interface using either the Amazon Direct Connect console or using the command line or API.
To set the MTU of a private virtual interface
Open the Amazon Direct Connect console at https://console.amazonaws.cn/directconnect/v2/home
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In the navigation pane, choose Virtual Interfaces.
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Select the virtual interface and then choose Edit.
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Under Jumbo MTU (MTU size 9001) or Jumbo MTU (MTU size 8500), select Enabled.
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Under Acknowledge, select I understand the selected connection(s) will go down for a brief period. The state of the virtual interface is
pending
until the update is complete.
To set the MTU of a private virtual interface using the command line or API
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update-virtual-interface-attributes (Amazon CLI)
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UpdateVirtualInterfaceAttributes (Amazon Direct Connect API)