I'm tracing a path to my server using tcptraceroute. The server is showing intermittent network availability. It's as if some packets get through fine, others take a long time and some never get there.

Here are two tcptraceroute's to the server. Any idea what would cause such varying output?

```
 1  VLAN host (<VLAN IP>)  0.786 ms 1.250 ms  1.637 ms  
 2  * * *  
 3  server host (<serverIP>)  0.632 ms 0.646 ms  0.647 ms

```

and

```
1  VLAN host (VLAN IP)  0.848 ms  1.259 ms  1.682 ms
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * server host (serverIP)  0.615 ms

```