Final tweaks

Author: madeline-underwood

content/learning-paths/servers-and-cloud-computing/microbenchmark-network-iperf3/setup.md

@@ -76,8 +76,7 @@ hostname -I
 ip address
 ifconfig
 ```
-
-### On the client
+## On the client
 
 Add the server's IP address, and assign it the name `SERVER`:
 
@@ -86,7 +85,7 @@ Add the server's IP address, and assign it the name `SERVER`:
 10.248.213.104  SERVER
 ```
 
-### On the server
+## On the server
 
 Add the client's IP address, and assign it the name `CLIENT`:
 

content/learning-paths/servers-and-cloud-computing/microbenchmark-network-iperf3/simulating-network-conditions.md

@@ -73,13 +73,13 @@ rcv_tcp_congestion cubic
 
 iperf Done.
 ```
-### Observations
+## Observations
 
 * The `Cwnd` size has grown larger to compensate for the longer response time. 
 
 * The bitrate has dropped from ~4.9 to ~2.3 `Gbit/sec` - demonstrating how even modest latency impacts throughput.
 
-### Simulate packet loss
+## Simulate packet loss
 
 To test the resiliency of a distributed application, you can add a simulated packet loss of 1%. As opposed to a 10ms delay, this will result in no acknowledgment being received for 1% of packets. 
 

content/learning-paths/servers-and-cloud-computing/microbenchmark-network-iperf3/tuning.md

@@ -38,7 +38,7 @@ Test Complete. Summary Results:
 [  8]   0.00-10.03  sec   187 MBytes   156 Mbits/sec                  receiver
 ```
 
-### Modify kernel parameters on the server
+## Modify kernel parameters on the server
 
 On the server, you can configure Linux kernel runtime parameters with the `sysctl` command.