[Click] Re: click Digest, Vol 29, Issue 17

[Siddharth Kasat]

Hi Marko,

Thanks for your reply. Another question I have is
Will I have to hard code all the routing table entries as follows for as
below of there is some easier way I can do that since I plan to enter 40,000
entries in routing table.

t :: RadixIPLookup(
216.60.228.0/22 <http://216.60.228.0/22> 64.200.95.239<http://64.200.95.239>1,
210.210.0.0/17 <http://210.210.0.0/17> 4.68.0.243 <http://4.68.0.243> 1,
... etc etc...
201.225.40.0/21 <http://201.225.40.0/21> 206.24.210.26<http://206.24.210.26>1,
);

For sending randomized IP addresses for look up can I use some tool like
packit etc?
and used tcpdump for the recieved packets or something of that sort??

Thanks,
Siddharth

On 11/21/05, Marko Zec <zec at icir.org> wrote:
>
> On Sunday 20 November 2005 21:04, Siddharth Kasat wrote:
> > Hi,
> >
> > I wanted to measure the performance of IP lookup for Lulea trees and
> > other kinds of look up.
> > I see some measurement figures in
> > http://pdos.csail.mit.edu/click/doc/IPRouteTable.n.html
> >
> > How do I go about it?
> >
> > Here is my idea about..I can send packets hard coded but then how do
> > I make entries in routing table?
>
>
> You may but do not need to generate valid packets in order to stress
> test the lookup elements. Lookup elements take IP address annotation
> with each packet as its input, not the actual contents of the packet.
> Moreover, it might be a good idea to completely randomize the
> destination address annotation in performance tests. Tests with
> localized traffic patterns might get serviced from the CPU cache with
> hit ratios unrealistically high compared to what could be expected in
> real life or worst-case scenarios (which is basically the same thing ->
> too oftern real life turns into the worst case scenario anyway :-)
>
> Here's a basic configuration that I used in my performance tests:
>
> rt :: RadixIPLookup(
> 216.60.228.0/22 <http://216.60.228.0/22> 64.200.95.239<http://64.200.95.239>1,
> 210.210.0.0/17 <http://210.210.0.0/17> 4.68.0.243 <http://4.68.0.243> 1,
> ... etc etc...
> 201.225.40.0/21 <http://201.225.40.0/21> 206.24.210.26<http://206.24.210.26>1,
> );
>
> RandomSource(4) -> GetIPAddress(0) -> rt;
>
> rt[0] -> Discard;
> rt[1] -> Discard;
>
> Hope this helps,
>
> Marko
>
>
> > Any pointer in this regard would be a great help.
> >
> > Thanks,
> > Siddharth
> >
>



--
Siddharth Kasat
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