32 DR4100 Best Practice Guide | April 20146. Ensure connectivity of DR2 eth2 and eth3 by pinging the gateway using the following command:network --ping --destination --interface 7. Add route from DR2 eth2 to DR1 eth2 and from DR2 eth3 to DR1 eth3 using the following commands:network --route --add --network --netmask --gateway --interfacenetwork --show --routes8. Add route from DR1 eth2 to DR2 eth2 and from DR1 eth3 to DR2 eth3 using the following commands:network --route --add --network --netmask --gateway --interfacenetwork --show –routesExampleadministrator@DR2> network --create_eth --nwif eth2 --static --ip 172.20.21.2 --netmask 255.255.255.0administrator@DR2 > network --create_eth --nwif eth3 --static --ip 172.20.23.2 --netmask255.255.255.0 –-restartadministrator@DR2 > network --showExampleadministrator@DR2 > network --ping --destination 172.20.21.1 --interface eth2administrator@DR2 > network --ping --destination 172.20.23.1 --interface eth3Exampleadministrator@DR2 > network --route --add --network 172.20.20.2 --netmask 255.255.255.0--gateway 172.20.21.1 --interface eth2administrator@DR2 > network --route --add --network 172.20.22.2 --netmask255.255.255.0 --gateway 172.20.23.1 --interface eth3administrator@DR2 > network --show --routesDestination Gateway Mask Interface172.20.20.0 172.20.21.1 255.255.255.0 eth2172.20.22.0 172.20.23.1 255.255.255.0 eth3