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ns问题总结-持续更新

2012-05-06 20:58 260 查看

1.问题：运行DSR协议，出现

；

解决办法：TCL脚本里的 set val(ifq) 改为 CMUPriQueue或者

if { $val(rp) == “DSR” } {
set val(ifq)            CMUPriQueue
} else {
set val(ifq)            Queue/DropTail/PriQueue
}

2.问题：编译c++代码，出现error：stray'\243'in program ；

解决办法：表述‘\243’这个字符不能识别，应该是用的中文输入法输入标点符号，把问题指向的语句重新用英文输入法输一次就行了。

3.问题：模拟一个基于aodv的协议，trace文件里有大量的因为CBK而产生的drop。

解答：cbk = drop rtr mac callback,
其实就是mac层的丢包在rtr层的显示。

4 ns-2.27/indep-utils/cmu-scen-gen/setdest/Makefile,
ns-2.27/indep-utils/webtrace-conv/conv/Makefile, and
ns-2.27/indep-utils/webtrace-conv/dec/Makefile,
needed to be modified in order to fix a bug in ISI's distribution.  The bug
caused a compile-time error that looked like this:

g++ -c -Dstand_alone -DSTL_NAMESPACE=@STL_NAMESPACE@  -o setdest.o setdest.cc
In file included from ../../../config.h:54,
from setdest.h:5,
from setdest.cc:57:
../../../autoconf.h:85: Error: namespace `CPP_NAMESPACE' undeclared
setdest.cc:71:1: warning: "INFINITY" redefined
In file included from /usr/include/math.h:40,
from setdest.cc:43:
/usr/include/bits/mathdef.h:35:1: warning: this is the location of the previous definition
make[1]: *** [setdest.o] Error 1
make[1]: Leaving directory `/home/iandow/netsim/ns-allinone-2.27/ns-2.27/indep-utils/cmu-scen-gen/setdest'
make[1]: Entering directory `/home/iandow/netsim/ns-allinone-2.27/ns-2.27/indep-utils/webtrace-conv/dec'

To fix the bug, edit ns-2.27/indep-utils/cmu-scen-gen/setdest/Makefile and
change this line:
DEFINE = -Dstand_alone -DSTL_NAMESPACE=@STL_NAMESPACE@
to this line:
DEFINE = -Dstand_alone -DSTL_NAMESPACE=@STL_NAMESPACE@ -DCPP_NAMESPACE=std

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