Create a Tier-0 Gateway

The Tier-0 gateway in the NSX-T Edge cluster provides a gateway service between the logical and physical network. While an NSX-T Edge cluster can back multiple Tier-0 gateways, there can be only one Tier-0 gateway per edge node.

1. Login to the user interface of NSX-T Manager.

2. On the main navigation bar, click Networking. Navigate to Tier-0 Gateways and click Add Tier-0 Gateway.

3. Enter a Name.

4. Select a high-availability mode. In the active-active mode, traffic is load balanced across all members. In active-standby mode, all traffic is processed by an elected active member. If the active member fails, a new member is elected to be active.

5. Click Save. Confirm that you want to continue configuring the Tier-0 gateway.

6. To configure route redistribution.

    • Expand Route Re-Distribution and click Set.
    • Select all sources and click Apply.
    • Click Save.

7. Add the uplink interfaces to the edge nodes.

  • Expand Interfaces and click Set.
  • In the Set Interfaces dialog box, click Add Interface and enter the settings for the uplink interfaces.
  • For every interface, provide a Name, an IP address in CIDR format, select a Segment and the Edge Node to attach the interface to.
  • (Optional) Change the MTU and add tags.
  • Click Save.

8. Repeat the process to create all required interfaces for this Tier-0 gateway. Click Close.

9. Configure BGP.

  • Expand BGP.
  • Enter the Local AS.
  • Configure the options.
  • Click Save.
  • Click Set for BGP Neighbors.
  • In the Set BGP Neighbors dialog box, click Add BGP Neighbor and enter the required settings.
  • Repeat the process to create all BGP neighbors.
  • Click Save.
  • Click Close.

10. Click Close Editing.

11. To validate that the BGP configuration works, generate a BGP summary for the Tier-0 gateway.

  • In the main navigation bar, click Advanced Networking & Security.
  • Select Routers and select the concerned Tier-0 gateway.
  • Select Actions > Generate BGP Summary.
  • Verify the Connection Status of each transport node is Established.

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