Hi everybody,

I am new to NSX-T, but have experience with VXLAN-BGPEVPN.

In VXLAN BGPEVPN,  VTEP can learn host routes ( /32) by snopping on ARP, DHCP messages from attached hosts.

Now my question, I will illustrate as below:

Case:T0 Only

We have two ESXi : ESXA and ESXB, both these ESXI are at two different data centers DC1 and DC2  joined by layer 3 WAN CKT:

DC1---1.1.1.1--WAN----2.2.2.2-DC2

ESXIA                                     ESXB

1) Over lay segment SEG-APP :(10.10.10.0/24) has been created and attached to Over lay transport TZ1 which is then attached to both ESXI hosts.

2) VMSERVER 10.10.10.10 is on ESXIA.

2) Edge node VM1 is on ESXI1 A and Edge node VM2 is on ESXB.  Only TO routers have been created, no T1 router is configured.

3) T0 routers are attached to TZ1 and also conncted to VLAN backed transport zone for external communication with non  NSX network.

Considerig the above, can T0 rouer  on Edge1VM( Which is on ESXIA)  learn 10.10.10.10/32 host route for attached VMSERVER1 by snooping on ARP, DHCP etc?

CASE: T1 and T0

Just like case1 but we are using T1 routers in addition to T0.

We have two ESXi : ESXA and ESXB, both these ESXI are at two different data centers DC1 and DC2  joined by layer 3 WAN CKT:

DC1---1.1.1.1--WAN----2.2.2.2-DC2

ESXIA                                     ESXB

1) Over lay segment SEG-APP :(10.10.10.0/24) has been created and attached to Over lay transport TZ1 which is then attached to both ESXI hosts.

2) VMSERVER 10.10.10.10 is on ESXIA.

2) Edge node VM1 is on ESXI1 A and Edge node VM2 is on ESXB.  T1/T0 routers have been created.

3) T1 routers are attached to TZ1 , T1 routers are also connected to T0, T0 routers are connected to non NSX's network using VLAN-back segment.

Considerig the above, can T1 rouer  on Edge1VM( Which is on ESXIA)  learn 10.10.10.10/32 host route for attached VMSERVER1 by snooping on ARP, DHCP etc?

Thanks and have a good weekend!!