the Tier-0 gateway provides N-S connectivity and connects to the physical routers. The Tier-0 gateway could use static routing or BGP to connect to the physical routers. The Tier-1 gateway cannot connect to physical routers directly; it has to connect to a Tier-0 gateway to provide N-S connectivity to the subnets attached to it.
- A DR component for the Tier-0 Gateway is instantiated on all Transport Nodes when a T1-Gateway is connected to it.
- An SR component for the Tier-0 Gateway is instantiated on the Edge Nodes when Physical routing, DNAT, Edge firewall services are configured.
- Auto Plumbing of T1 SR to T0 DR is done by “Inter-Tier” LS/Segment (VNI 65549) using 100.64 subnet (reserved)
- Auto Plumbing of DR to SR is done by “Transit Segment” LS/Segment (VNI 69639) using 169.254 subnet (reserved)
Follow the steps below to create T1 Gateway.
1 – Select Networking > Tier 1 Gateways > ADD TIER-0 GATEWAY.
2 – Type a name for Tier-0 Gateway, select the HA mode that you choose, select the egde cluster and Click save.
3 – Click “Yes” to continue configuring the Tier-0 Gateway.
4 – Click interfaces and set.
5 – Click add interface and then configure the uplink.
6 – Validate the status.
7 – Click BGP, set the AS Local number 65111 and click save.
8 – Click BGP neighbors.
9 – And then configure the neighbors.
10 – Validate the status and click close.
11 – Finally validate the status of Tier-0 Gateway.
Hoping you have enjoyed this post, see you next time.
