The implementation of SAPRouter in a HA environment is possible.
You have to take care that an IP Address (with a corresponding virtual hostname) is moving together with the SAPRouter.
I recommend the following:
- create a Resource Group for the SAPRouter
- add to this resource a virtual hostname and a virtual IP address
- in the hosts file add the corresponding entry (both nodes)
- create a 'Generic Service' for the SAPRouter as described in note #41054, just remember to use the -I option with the above virtual IP address for its value.