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Create Logical Routers

A logical router replicates the functions of a physical router. It connects multiple virtual networks. A logical router performs a set of tasks that can be handled by a physical router, and contains multiple routing instances and routing tables.

Follow these steps to create a logical router (LR).

  1. Click Overlay>Logical Routers.

    The Logical Routers page is displayed.

  2. Click Create.

    The Create Logical Router page is displayed.

  3. Enter the following information.

    Field

    Action

    Name

    Enter a name for the Logical Router.

    Admin State

    Select the administrative state that you want the device to be in when the router is activated.

    Up is selected by default.

    Extend to Physical Router

    Select the physical router(s) to which you want to extend virtual networks or routed virtual networks to, from the Extend to Physical Router list.

    A physical router provides routing capability to the logical router.

    Logical Router Type

    Select SNAT Routing or VXLAN Routing from the list.

    Connected Networks

    Select the networks that you want to connect this logical router to.

    Public Logical Router

    (Optional) Select this check box if you want the logical router to function as a public logical router.

    VxLAN Network Identifier

    Enter VXLAN network identifier in the range from 1 through 16,777,215.

    This field is disabled by default.

    Route Target(s)

    Click +Add to add route targets.

    Enter Autonomous System (AS) number in the ASN field.

    • Enter ASN in the range of 1-4,294,967,295, when 4 Byte ASN is enabled in Global Config.

    • Enter ASN in the range of 1-65,535, when 4 Byte ASN is disabled.

    • You can also add suffix L or l (lower-case L) at the end of a value in the ASN field to assign an AS number in 4-byte range. Even if the value provided in the ASN field is in the range of 1-65,535, adding L or l (lower-case L) at the end of the value assigns the AS number in 4-byte range. If you assign the ASN field a value in the 4-byte range, you must enter a value in the range of 0-65,535 in the Target field.

    Enter route target in the Target field.

    • Enter route target in the range of 0-65,535, when 4 Byte ASN is enabled and ASN field is assigned a 4-byte value.

    • Enter route target in the range of 0-4,294,967,295, when the ASN field is assigned a 2-byte value.
  4. Click Create to create the logical router.

    The Logical Routers page is displayed.

  5. Repeat Step 3 and Step 4 to create another logical router.
Note:

The router_interface object (Virtual Port) is created as part of the LR creation. While planning the Virtual Network IP address scheme, you must be aware that an extra one IP address is required for the router_interface object which gets created automatically.