Configure BCBs for Inter-VSN Routing

Inter-VSN allows you to route between IP networks on Layer 2 VLANs with different I-SIDs. Inter-VSN routing is typically used only when you have to extend a VLAN as a Layer 2 Virtual Services Network (VSN) for applications such as vMotion. Use IP Shortcuts to route traffic. You must configure both the Backbone Edge Bridges (BEBs) and the Backbone Core Bridge (BCB).

Note

Note

To enable inter-VSN routing, you must configure the IP interface where the routing instance exists.

Before you begin

  • You must configure the required SPBM and IS-IS infrastructure.

  • You must configure the BEBs that contain the VSNs you want to route traffic between. For more information, see Configure BEBs for Inter-VSN Routing.

About this task

Follow these steps to configure the BCB for inter-VSN routing.

Procedure

  1. On the BCB, create a VRF:
    1. In the navigation pane, expand Configuration > VRF.
    2. Select VRF.
    3. Select Insert.
    4. For Id, specify the VRF ID.
    5. Name the VRF instance.
    6. Configure the other parameters as required.
    7. Select Insert.
  2. Create a VLAN to associate with each VSN:
    1. In the navigation pane, expand Configuration > VLAN.
    2. Select VLANs.
    3. On the Basic tab, select Insert.
    4. For Id, type an unused VLAN ID, or use the ID provided.
    5. For Name, type the VLAN name, or use the name provided.
    6. For Color Identifier, select a color from the list, or use the color provided.
    7. For Type, select byPort.
    8. For PortMembers, select the ellipsis (...).
    9. Select the ports to add as member ports.

      The ports that are selected are recessed, while the nonselected ports are not recessed. Port numbers that are dimmed cannot be selected as VLAN port members.

    10. Select OK.
    11. Select Insert.
  3. Associate the VLAN with an I-SID:
    1. From the same Configuration > VLAN > VLANs navigation path, select the Advanced tab.
    2. For Isid, specify the I-SID to associate with the specified VLAN.
    3. Select Apply.
  4. Configure a circuitless IP interface (CLIP):
    1. In the navigation pane, expand Configuration > IP.
    2. Select IP.
    3. Select the Circuitless IP tab.
    4. Select Insert.
    5. For Interface, type a CLIP interface number.
    6. Provide the IP address.
    7. Provide the network mask.
    8. Select Insert.
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