Changes between Version 4 and Version 5 of GENIExperimenter/Tutorials/SystematicExprCaseStudy/SmallTopo/Execute

Timestamp:

09/23/14 10:56:35 (10 years ago)

Author:

sedwards@bbn.com

Comment:

--

GENIExperimenter/Tutorials/SystematicExprCaseStudy/SmallTopo/Execute

@@ -194 +194 @@
  * Bring down the interface at router-2
 
- We can make the link between `router-1` and `router-2` fail by bringing down the corresponding interface on `router-2`. While running `xorp_log.sh` at `router-1`, we disable the virtual interface (assuming it's `eth2`) at `router-2`, which is associated with the virtual link (`192.168.1.0/24`) to `router-1`, and the command is:
+ We can make the link between `router-1` and `router-2` fail by bringing down the corresponding interface on `router-2`. While running `xorp_log.sh` at `router-1`, we disable the virtual interface at `router-2`, which is associated with the virtual link (`192.168.1.0/24`) to `router-1`.  
+ Use `/sbin/ifconfig` to find the name of that interface.
+
+{{{
+xuanliu@router-2:~$ /sbin/ifconfig
+eth0      Link encap:Ethernet  HWaddr 02:6c:4e:0a:be:dc  
+          inet addr:172.17.1.19  Bcast:172.31.255.255  Mask:255.240.0.0
+          inet6 addr: fe80::6c:4eff:fe0a:bedc/64 Scope:Link
+          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
+          RX packets:1298 errors:0 dropped:0 overruns:0 frame:0
+          TX packets:1309 errors:0 dropped:0 overruns:0 carrier:0
+          collisions:0 txqueuelen:1000 
+          RX bytes:153645 (153.6 KB)  TX bytes:116549 (116.5 KB)
+          Interrupt:25 
+
+<snip>
+
+eth2      Link encap:Ethernet  HWaddr 02:4a:cc:17:60:44  
+          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
+          inet6 addr: fe80::4a:ccff:fe17:6044/64 Scope:Link
+          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
+          RX packets:3401 errors:0 dropped:0 overruns:0 frame:0
+          TX packets:2551 errors:0 dropped:0 overruns:0 carrier:0
+          collisions:0 txqueuelen:1000 
+          RX bytes:127175180 (127.1 MB)  TX bytes:177712 (177.7 KB)
+          Interrupt:26 
+
+<snip>
+
+lo        Link encap:Local Loopback  
+          inet addr:127.0.0.1  Mask:255.0.0.0
+          inet6 addr: ::1/128 Scope:Host
+          UP LOOPBACK RUNNING  MTU:16436  Metric:1
+          RX packets:8368 errors:0 dropped:0 overruns:0 frame:0
+          TX packets:8368 errors:0 dropped:0 overruns:0 carrier:0
+          collisions:0 txqueuelen:0 
+          RX bytes:895016 (895.0 KB)  TX bytes:895016 (895.0 KB)
+}}}
+
+ For example, in the above the appropriate interface is `eth2`.  So the command to bring down the interface to `router-1` is:
 {{{
 xuanliu@router-2:$ sudo ifconfig eth2 down
 }}}
 
-We can see one routing table update occurred at `router-1`:
+ We can see one routing table update occurred at `router-1`:
 
 {{{
@@ -215 +254 @@
 }}}
    
- When we bring up `eth2` at `router-2` again, we notice another routing table update at `router-1` immediately. 
+ When we bring up `eth2` at `router-2` again, we notice another routing table update at `router-1` immediately.  The command to bring the interface back up is:
+{{{
+xuanliu@router-2:$ sudo ifconfig eth2 up
+}}} 
 
   * Make `router-2` fails.