[Click] problems about fake-iprouter.click

[Eddie Kohler]

Hi

Fake-iprouter.click is just what it claims to be: FAKE.  We use it for 
profiling.  We didn't bother to get the mac addresses right because 
it's not important.

Eddie


On Oct 11, 2004, at 1:10 AM, Æë wrote:

> Hello
>   We have new problems about  the example "fake-iprouter".
>   The major problems are as follows:
> 1.In the annotations, it tells us
>   eth0, 00:00:C0:AE:67:EF, 18.26.4.24
>   eth1, 00:00:C0:4F:71:EF, 18.26.7.1
> so we know MAC address of 18.26.4.24 is 00:00:C0:AE:67:EFbut in the 
> InfiniteSource element,it shows us
>    InfiniteSource(DATA \<
>   // Ethernet header
>   00 00 c0 ae 67 ef  00 00 00 00 00 00  08 00
>   // IP header
>   45 00 00 28  00 00 00 00  40 11 77 c3  01 00 00 01  02 00 00 02
> ......
> we can see the source ip is 01 00 00 01, the destination is 02 00 00 
> 02, and the mac address of the source ip is 00 00 c0 ac 67 ef.
> So we want to know why the mac address of 18.26.4.24 and 1.0.0.1
> are the same. Also I am wondering whether eth0 and eth1 are the
> two network cards in one machine?
>
> 2.In the beginning of program,it defines two Classifier elements,c0 and
> c1, but about the c0, which input is Idel, meaning input nothing to it.
> and we want to know whether c0 is no use. If the answer is yes ,why we 
> define this element?
>
> 3.The third problem is about EtherEncap element.In the program,it 
> shows us
> fake_arpq0 :: EtherEncap(0x0800, 00:00:c0:ae:67:ef, 00:00:c0:4f:71:ef);
> fake_arpq1 :: EtherEncap(0x0800, 00:00:c0:4f:71:ef, 00:00:c0:4f:71:ef);
> notice the second line,why it uses the same source and destination mac 
> address?
> thanks
>                                                               xixi
>                                                             2004.10.11
> ----------------------------------------------
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