VMware NSX-T: Route Types on Tier-0 and Tier-1 Gateways
Today we are going to discuss about the route types in the VMware NSX-T which are Tier-0 and Tier-1 Gateways. This is important topic for VMware NSX-T students. Let's discuss these two gateways one by one
Tier-0 Gateway
- Connected – Connected routes on Tier-0 include external interface subnets, service interface subnets and segment subnets connected to Tier-0. 172.16.20.0/24 (Connected segment), 192.168.20.0/24 (Service Interface) and 192.168.240.0/24 (External interface) are connected routes for Tier-0 gateway
- Static – User configured static routes on Tier-0.
- NAT IP – NAT IP addresses owned by the Tier-0 gateway discovered from NAT rules configured on Tier-0 Gateway.
- BGP – Routes learned via a BGP neighbor.
- IPSec Local IP – Local IPSEC endpoint IP address for establishing VPN sessions.
- DNS Forwarder IP – Listener IP for DNS queries from clients and also used as source IP used to forward DNS queries to upstream DNS server.
Fig 1.1-Route Types on Tier-0 and Tier-1 Gateways |
Tier-1 Gateway
- Connected – Connected routes on Tier-1 include segment subnets connected to Tier-1 and service interface subnets configured on Tier-1 gateway. 172.16.10.0/24 (Connected segment) and 192.168.10.0/24 (Service Interface) are connected routes for Tier-1 gateway
- Static– User configured static routes on Tier-1 gateway.
- NAT IP – NAT IP addresses owned by the Tier-1 gateway discovered from NAT rules configured on the Tier-1 gateway.
- LB VIP – IP address of load balancing virtual server.
- LB SNAT – IP address or a range of IP addresses used for Source NAT by load balancer.
- IPSec Local IP – Local IPSEC endpoint IP address for establishing VPN sessions.
- DNS Forwarder IP –Listener IP for DNS queries from clients and also used as source IP used to forward DNS queries to upstream DNS server.