hwchiu

各位師長、家長以及在座所有的畢業生們大家好，

今天，是個特別的日子
為什麼特別?
是因為一群人穿者碩士袍聚在一起?
還是因為你父母從遠方而來參加這場畢業典禮?
亦或是你等等準備上台接受撥穗?
都不是
真正的特別的是，過了今天以後，你還是不能畢業

hwchiu

Create topology

sudo mn --topo single,3 --mac

Configuration

• In the mininet prompt
  1. h3 ifconfig h3-eth0 30.0.0.3
  2. h1 route add default gw 10.0.0.254 h1-eth0

3. h3 route add default gw 30.0.0.254 h3-eth0

hwchiu

    protected Command processPacketInMessage(IOFSwitch sw, OFPacketIn pi,
                                             FloodlightContext cntx) {
        Ethernet eth =
                IFloodlightProviderService.bcStore.
                get(cntx,IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
        logger.error("ethernet:{}",eth.toString());
    ....
    ....
    ...

hwchiu

@左邊電腦

1. root@controller:/ neturon-server @tty1
2. root@controller:/home/amy/floodlight_ecmp/: floodlight ..... @tty2
3. 等他跑一下，可以看floodlight console有沒有噴計算完畢相關的訊息

@右邊筆電

1. root@controller:/ cd home/amy/code_test/$VAR1 screen-9
2. sh simple_random_VM..sh Ubuntu-exp2 執行此指令去創造vm

hwchiu

1. mininet: mn --controller=remote,ip=127.0.0.1 --topo topo --custom topo.py
2. h1 ping h4
3. open other terminal
4. type "ovs-ofctl dump-flows s2" to make sure the flow is pass through s2.
5. type "ifocnfig s1-eth1" to shutdown the link between s1 and s2
6. The result in the mininet promt:

64 bytes from 10.0.0.4: icmp_req=71 ttl=64 time=0.028 ms
64 bytes from 10.0.0.4: icmp_req=72 ttl=64 time=195 ms
64 bytes from 10.0.0.4: icmp_req=73 ttl=64 time=0.157 ms

hwchiu

tag v2.2-beta1
Tagger: David Sommerseth <dazo@users.sourceforge.net>
Date:   Mon Aug 16 20:43:39 2010 +0200

2010.08.10 -- Version 2.2-beta1

* When aborting in a non-graceful way, try to execute do_close_tun in
  init.c prior to daemon exit to ensure that the tun/tap interface is
  closed and any added routes are deleted.

hwchiu

routemap.c:405:7: warning: Access to field 'instance' results in a dereference of a null pointer (loaded from variable 'zlog_default')
  if (zlog_default->instance)
      ^~~~~~~~~~~~~~~~~~~~~~
routemap.c:1689:9: warning: Access to field 'nextrm' results in a dereference of a null pointer (loaded from variable 'index')
                             index->nextrm,
                             ^~~~~~~~~~~~~
2 warnings generated.
ptm_lib.c:385:13: warning: Branch condition evaluates to a garbage value
        if (!p_ctxt) {
            ^~~~~~~

hwchiu

Setup Ubuntu 16.04 to be used with Vagrant and Virtualbox

Prepare Vagrant box with Ubuntu 16.04

We will use official box "ubuntu/xenial64" and modify it to work with Vagrant.

• Vagrantfile

hwchiu

Setup Ubuntu 16.04 to be used with Vagrant and Virtualbox

Prepare Vagrant box with Ubuntu 16.04

We will use official box "ubuntu/xenial64" and modify it to work with Vagrant.

• Vagrantfile

hwchiu

Setup Ubuntu 16.04 to be used with Vagrant and Virtualbox

Prepare Vagrant box with Ubuntu 16.04

We will use official box "ubuntu/xenial64" and modify it to work with Vagrant.

• Vagrantfile