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eg-253:networkq:654795 [2012/12/06 10:08] – [Question 19] eechriseg-253:networkq:654795 [2012/12/06 10:16] (current) – [Question 24] eechris
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     up route add -net 192.168.3.0 netmask 255.255.255.0 gw 192.168.1.4     up route add -net 192.168.3.0 netmask 255.255.255.0 gw 192.168.1.4
  
-What about ''down route''?+**What about ''down route''?** 
 + 
 + --- //[[chris@cpjobling.me|Chris Jobling]] 2012/12/06 04:09//
  
-<cli> 
   icct@jupiter:~$ cat /etc/network/interfaces   icct@jupiter:~$ cat /etc/network/interfaces
   # This file describes the network interfaces available on your system   # This file describes the network interfaces available on your system
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   #auto eth2   #auto eth2
   #iface eth2 inet dhcp   #iface eth2 inet dhcp
-<cli>+ 
 +**Yes, except, you should have reproduced the file for saturn!** 
 + 
 + --- //[[chris@cpjobling.me|Chris Jobling]] 2012/12/06 04:09// 
  
  
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   IRTT: Initial Round Trip Time, the Kernel uses this to guess about the best TCP Protocol parameters without waiting on answers.   IRTT: Initial Round Trip Time, the Kernel uses this to guess about the best TCP Protocol parameters without waiting on answers.
   IFace: Interface to which packets of this route will be sent   IFace: Interface to which packets of this route will be sent
 +  
 +**Good idea to use the documentation for the definition, but what does it do in words that you and I could understand?**
 +
 + --- //[[chris@cpjobling.me|Chris Jobling]] 2012/12/06 04:10//
 ==== Question 21 ==== ==== Question 21 ====
  
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   R: Interface is running   R: Interface is running
   U: Interface is up   U: Interface is up
 +  
 +**If anything, the official documentation of ''netstat -i'' is even more opaque. What does it really show us?**
 +
 + --- //[[chris@cpjobling.me|Chris Jobling]] 2012/12/06 04:11//
 ==== Question 22 ==== ==== Question 22 ====
  
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   tcp        0      0 localhost.localdo:mysql *:*                     LISTEN        tcp        0      0 localhost.localdo:mysql *:*                     LISTEN     
  
-  The command -t displays all of the active TCP connections. A displays all active connections and the TCP and UDP ports on which the computer is listening.+  The command -t displays all of the active TCP connections. A displays all active connections and the TCP and UDP ports on which the computer is listening. 
   Combining them together gives the above output.   Combining them together gives the above output.
 +  
 +**Good, that's what I was after for the previous two questions! Perhaps the documentation is better for ''netstat -ta''**
 +
 + --- //[[chris@cpjobling.me|Chris Jobling]] 2012/12/06 04:14//
 ===== Testing the Connectivity of your network ===== ===== Testing the Connectivity of your network =====
  
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   1  hyperion.saturn.icct.com (192.168.3.21)  0.753 ms  0.755 ms  0.748 ms   1  hyperion.saturn.icct.com (192.168.3.21)  0.753 ms  0.755 ms  0.748 ms
  
 +**The question asks you to provide a route to another network. You should have used something on jupiter.icct.com or icct.com. There would then have been at least 2 hops.**
  
 + --- //[[chris@cpjobling.me|Chris Jobling]] 2012/12/06 04:12//
 ==== Question 24 ==== ==== Question 24 ====
  
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   29  * * *   29  * * *
   30  * * *   30  * * *
 +  
 +**How do you explain the no-reply status of hops 2-30? Do you think that there are there really 30 networks between hyperion.saturn.icct.com and www.swan.ac.uk?**
  
 + --- //[[chris@cpjobling.me|Chris Jobling]] 2012/12/06 04:15//
 ===== Extension Questions ===== ===== Extension Questions =====
  
eg-253/networkq/654795.1354788538.txt.gz · Last modified: 2012/12/06 10:08 by eechris