Add a Second BGP Neighbor and Enable ECMP Routing in Manager Mode

Before you enable ECMP routing, you must add a BGP neighbor and configure it with the newly added uplink information.

Prerequisites

• Verify that the second edge node has an uplink port configured. See Add an Uplink Port for the Second Edge Node for ECMP in Manager Mode.

• Verify that Manager mode is selected in the NSX Manager user interface. See NSX Manager. If you do not see the Policy and Manager mode buttons, see Configure User Interface Settings.

Procedure

1. From your browser, log in with admin privileges to an NSX Manager at https://<nsx-manager-ip-address>.
2. Select Networking > Tier-0 Logical Routers.
3. Select the tier-0 logical router.
4. Click the Routing tab and select BGP from the drop-down menu.
5. Click Add under the Neighbors section to add a BGP neighbor.
6. Enter the neighbor IP address.

   For example, 192.168.200.254.

7. (Optional) Specify the maximum hop limit.
   The default is 1.
8. Enter the remote AS number.

   For example, 64511.

9. (Optional) Click the Local Address tab to select a local address.
   1. (Optional) Uncheck All Uplinks to see loopback ports as well as uplink ports.
10. (Optional) Click the Address Families tab to add an address family.
11. (Optional) Click the BFD Configuration tab to enable BFD.
12. Click Save.
    The newly added BGP neighbor appears.
13. Click Edit next to the BGP Configuration section.
14. Click the ECMP toggle button to enable ECMP.
    The Status button must be appear as Enabled.
15. Click Save.

Results

Multiple ECMP routing paths connect the VMs attached to logical switches and the two Edge nodes in the Edge cluster.

What to do next

Test whether the ECMP routing connections are working properly. See Verify ECMP Routing Connectivity on a Tier-0 Router.