A quick post to show how to create and view routes on a ESXI Host:

To change the hostname, domain, DNS servers, and default gateway in VMware vSphere or Infrastructure Client:
  1. Highlight the ESX host and click the Configuration tab.
  2. Click DNS and Routing.
  3. Click Properties.
  4. To change the hostname, domain, and DNS servers, click the DNS Configuration tab and enter the appropriate values.

 

The following cmd shows the list of options:

esxcfg-route -h

To set the VMkernel  default gateway:

esxcfg-route -a default <IP address>

or

esxcfg-route <IP Address>

To view the arp table:

esxcfg-route -n

To add a route:

 esxcfg-route -a 192.168.100.0 255.255.255.0 192.168.0.1

or

esxcfg-route -a 192.168.100.0/24 192.168.0.1

To delete a route:

esxcfg-route -d 192.168.100.0/24 192.168.0.1