Validate Ethernet Cluster Networking#

Once all of the switches are up, you need to verify the hardware health and proper configuration.

Platform Health#

The following components need to be checked for platform health:

System
Internal Components
Software Processes
Transceiver/Cable

Cabling Quality (L1)#

The following components need to be checked for cabling quality:

Tx/Rx Signal Level
Peer Connectivity
Tx/Rx Signal Integrity

Fabric Underlay Routing#

The following components need to be checked for fabric underlay routing:

Fabric Overlay Routing (EVPN)#

To show the Ethernet segments across all VNIs, run the following command:

To show the Ethernet segments across all VNIs:
```
nv show evpn multihoming
```
Figure 3 Ethernet Segments Across All VNIs#

Show Ethernet Segment Information#

The following steps show how to show the Ethernet segments across all VNIs, information about a specific ESI, the Ethernet segments for a specific VNI, the Ethernet segments across all VNIs learned through type-1 and type-4 routes, and verify ESI to VRF information.

To show the Ethernet segments across all VNIs, run the following command:
```
$ nv show evpn multihoming esi
```
Figure 4 Ethernet Segments Across All VNIs#
To show information about a specific ESI, run the following command:
```
$ nv show evpn multihoming esi <ESI_ID>
```
Figure 5 Ethernet Segments Across All VNIs#

To show the Ethernet segments for a specific VNI, run the following command:
```
$ nv show evpn vni <VLAN> multihoming esi
```
Figure 6 Ethernet Segments Across All VNIs#
To show the Ethernet segments across all VNIs learned through type-1 and type-4 routes, run the NVUE command:
```
$ nv show evpn multihoming bgp-info esi
```
Figure 7 Ethernet Segments Across All VNIs#
To verify ESI to VRF information, run the following command:
```
$ sudo vtysh -c 'show bgp l2vpn evpn es-vrf'
```
Figure 8 Ethernet Segments Across All VNIs#
To verify EVPN type-1 and type-4 routes learned, run the following command:
```
$ sudo vtysh -c 'show bgp l2vpn evpn route type ead'
```
Figure 9 Ethernet Segments Across All VNIs#
To verify NVE interface (VTEP) state and configuration, run the following command:
```
$ nv show nve vxlan
```
Figure 10 Ethernet Segments Across All VNIs#

Customer Network Reachability#

The following components need to be checked for customer network reachability:

Customer Edge to Cluster Border
- BGP IPv4 AF Neighbors
- BGP Prefix Exchange
- Next-Hop Reachability
- Packet Loss
Customer (external) to Cluster (internal)
- End-to-End Reachability (if available) - Dependent on end-host connected to fabric (ex: DGX)
- Packet Loss

Negative Testing#

The following components need to be checked for negative testing:

Customer Edge Failover
- Disable Switch(es) / Link(s) / BGP Neighbor(s)
- End-to-End Reachability
- Packet Loss / Recovery Time
Cluster Fabric Failover
- Disable Switch(es) / Link(s) / BGP Neighbor(s)
- End-to-End Reachability
- Packet Loss / Recovery Time