![Wunderground radar down for maintenance](https://cdn1.cdnme.se/5447227/9-3/22_64e61dfde087c31b3e70ff43.png)
Your 2nd physical box could also be running a 3rd CHR to handle any OSPF traffic and/or routing to your customers. You should have a second cold-spare physical VMware ESXi server ready to use if you have a hardware problem with the first physical box.
![mikrotik chr esxi mikrotik chr esxi](https://wiki.mikrotik.com/images/d/de/CHR_keys_01.png)
((( Note On your CHRs, use VMXNET-3 network interfaces only )))
![mikrotik chr esxi mikrotik chr esxi](https://1.bp.blogspot.com/-uf9YyWMS_48/WPDb6VQ_YoI/AAAAAAAAATw/c2E0Yxntr-sDrZKeogLye9PsUVUm9ffWgCLcB/s1600/2017-04-13_135552-min.png)
((( Note The 2nd CHR which runs on the 2nd Xeon CPU might have slightly faster throughput ))) ((( Note Each CHR will run on a different physical Xeon processor -and- each CHR will have access to the entire built-in Xeon CPU cache ))) On 2nd CHR, configure eight CPUs (CPUs 12-through-20) ((( dedicated configuration to make this CHR run only on the 2nd Xeon CPU ))) On 1st CHR, configure eight CPUs (CPUs 2-through-10) ((( dedicated configuration to make this CHR run only on the 1st Xeon CPU ))) Two Xeon CPUs - with a minimum of 10 cores per Xeon CPU. One physical VMware ESXi box (Free version of VMware ESXi) For two 10-Gig BGP CHR routers, this is what I do (and it works good).
![Wunderground radar down for maintenance](https://cdn1.cdnme.se/5447227/9-3/22_64e61dfde087c31b3e70ff43.png)