enabler: Additional machine tuning docs

internal-lab-setup-assets/README.md

@@ -12,6 +12,16 @@ Images for emulated network devices must also be available. See ./images/README.
 
 You must tune host settings https://hmntsharma.github.io/cisco-xrd/base_setup/#clone-the-xrd-tools-repository
 
+As of March 2024, for XRd 7.11.1, the following sysctl settings were appropriate based on the above guide:
+
+```
+# /etc/sysctl.conf
+fs.inotify.max_user_instances=64000
+fs.inotify.max_user_watches=64000
+net.core.rmem_default=67108864
+net.ipv4.udp_mem='1124736 10000000 67108864'
+```
+
 Set mgmt address in the config (instead of automatically assigning) as XRd has a bug and a container keeps its old address if it's been assigned a new address. containerlab is non-deterministic when assigning mgmt IPs.
 
 Review the `Makefile` in `Getting_Started`