Add multiple interface support in NS-2.33
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Introduction:
Codes in this archive add multiple interface support in NS-2.33. I accomplished this work, thanks to Ramon's notes (http://personales.unican.es/aguerocr/). There are many places need to be modified, and there is one line need to be deleted form the legacy tcl code not be pointed out in Ramon's notes, I spent a lot of time to get it worked successfully. Therefor, I decided to share these codes with others who have the same requirement for NS
How to use:
Copy dirs in ns-2.33 to your own ns-2.33, then "make clean", "make"
Use "ns multi/single-interface.tcl" in example dir to run the simulation
Notice:
1. Single-interface scenario could be demonstrated correctly by nam, while multi-interface's nam file has some errors. However, the trace file of the multi-interface scenario shows that the multi-interface module works correctly. From the trace file we could find out that node 1 received data from mac address 0, and then forwarded to node 2. Node 2 received tcp packets from source MAC address 2, while in single-interface scenario the source MAC address would be 1.
Node 0 Node 1 Node 2
channel 0 channel 0 channel 2 channel 2
MAC 0 MAC 1 MAC 2 MAC 3
2. For the single-interface scenario, code generated by NSG2 or NSBench works well. However, for the multi-interface scenario, there would be some constraints for the variabe names in the scenario script.
1. set ns_ [new Simulator] ;# The simulator instance's variabe name must be ns_
2. set tracefd [open multi-interface.tr w] ;# The trace file handle's variabe name must be tracefd
Download: 
Add multiple interface support in NS-2.33
cgm | 2009-11-22 19:03:33
謝謝你的分享我最近也都在用這個模組
有空可以彼此交流一下囉^^
cgm | 2009-11-23 00:52:53
另外想請教一下
您所發現的文件錯誤之處
是在那裡呢?謝謝
yhustc | 2009-11-23 11:11:51
是这样的，一般来说，如果有需要删除的语句，这个文档上不是会注释掉么？这样你自己对比一下，注释掉就知道是要删除了。但是在ns-2.33\tcl\lib\ns-mobilenode.tcl第288行$sndT target [$self set ll_(0)]，这一行文档上是删除了的，但是没有用注释的方式表达出来，导致我一开始测试总是不能在多接口之间转发。后来仔细对比，发现这一行被删除了wt | 2009-12-13 02:59:00
wt@wt-desktop:~/program/ns-allinone-2.33/ns-2.33/example$ ns%
wt@wt-desktop:~/program/ns-allinone-2.33/ns-2.33/example$ ns multi-interface.tcl
num_nodes is set 9
(_o7 cmd line 1)
invoked from within
"_o7 cmd change-numifs 1"
invoked from within
"catch "$self cmd $args" ret"
invoked from within
"if [catch "$self cmd $args" ret] {
set cls [$self info class]
global errorInfo
set savedInfo $errorInfo
error "error when calling class $cls: $args" $..."
(procedure "_o7" line 2)
(SplitObject unknown line 2)
invoked from within
"$ns_ change-numifs 1"
(file "multi-interface.tcl" line 63)
wt@wt-desktop:~/program/ns-allinone-2.33/ns-2.33/example$ ns single-interface.tcl
num_nodes is set 3
INITIALIZE THE LIST xListHead
channel.cc:sendUp - Calc highestAntennaZ_ and distCST_
highestAntennaZ_ = 1.5, distCST_ = 550.0
SORTING LISTS ...DONE!
wt@wt-desktop:~/program/ns-allinone-2.33/ns-2.33/example$
dk | 2010-03-09 17:20:33
您好，我运行你的代码时也出现像 wt | 2009-12-13 02:59:00所说的情况，什么原因呢？yhustc | 2010-03-10 13:44:17
楼上两位朋友，之前我回复说无法复现这个问题，估计是因为我的代码确实没问题。今天师弟叫我帮忙看看，我发现报的错跟你们两们是一样的。然后我去ns-2.33/tcl/lib/ns-lib.tcl里面调试，发现他的这个文件里面根本没有change-numifs函数，这个函数应该是在2277行。后来师弟发现解压没搞正确，没有覆盖掉原来的ns-lib.tcl，所以没有增加修改后的那部分代码。你们可以打开这个文件确认一下是修改过的版本。反应BUG | 2010-03-11 16:19:11
当给文章添加一个分类，但是不给他添加任何文章时，当在首页点击 该分类时，会出现 错误：SQL 语法错误，我调试了下，发现在分类里没有任何文章时，BlogAction.class.php的第171行$postList = $postsDao->where($where)->order("top DESC,post_date DESC")->limit($page->firstRow.','.$page->listRows)->findAll(); 执行后 $postList值为false 。下面一行代码：if(count($postList) > 0) 这里当$postList为false时，count函数返回的是1 ，所以继续往下执行，这样当然就会出错了，我查了下PHP手册，有这么一句：对于count(var)函数如果 如果 var 不是数组类型或者实现了 Countable 接口的对象，将返回 1，有一个例外，如果 var 是 NULL 则结果是 0。 所以在该文件的175行的 if(count($postList) > 0) 应该再加个条件限制 ：if(count($postList) > 0 && $postList!==false) 这样就没问题了。
yhustc | 2010-03-14 13:50:06
楼上的朋友，非常感谢你的反馈