[Xorp-hackers] loading complete routing tables

[Ratul Mahajan]

atanu -

thanks for the response.

so i looked at the harness code some time back and came away with the 
following impressions regarding the current code:
  - it (harness/Peer::send_dump) does not support mtrd records of type 
TABLE_DUMP (entire table dumps). it assumes BGP4MP (dumps of routing 
updates).
  - it does not support having updates from multiple peers in the same 
mrtd file (as would be generated by a router with many peers).

please correct me if any of the above is wrong. none of it seems 
insurmountable but i just wanted to ensure that i wasn't missing 
something easier.

thanks.

Atanu Ghosh wrote:
> Hi,
> 
> We use the test harness to load routes into BGP:
> <http://www.xorp.org/releases/1.1/docs/test_harness/test_harness.pdf>
> 
> Some examples of this are in bgp/harness/test_peering2.sh, test1 and
> test15 are the most interesting examples. These tests load data from
> mtrd format files. The tests by default also start the BGP process
> unless the "-s" argument is used. As an aside the gmake check target
> runs all these tests.
> 
> The way that I currently load routes from mrtd files into BGP is to use
> the bgp/harness/harness.py script.
> 
> 1) Configure BGP to accept a peering from the test peer. The XORP BGP
> can be configured to accept connections on ports other than 179 if you
> want to do everything on a single host. But you will need to edit the
> script to use a port number other than 179.
> 
> 2) A number of processes need to be started. I typically use separate xterms.
> 	a) The finder process (libxipc/xorp_finder) if there is a router
>         manager running on this host this step is not necessary.
> 	b) bgp/harness/coord
> 	c) bgp/harness/test_peer -s peer1
> 
> 3) The harness program can now be used to inject routes or even save
> routes from the BGP process. Many separate files can be loaded as the
> session is maintained by the test_peer not the harness program.
> 
> $ ./test_harness.py -e -p bgp_host -a asnum -b bgp-id -i mtrd_file1 
> $ ./test_harness.py -p bgp_host -a asnum -b bgp-id -i mtrd_file12
> 
> Note the first time "-e" is used to establish the the session the second
> time the session exists. If you want to see the protocol packets then
> add "-v" to the list of test_peer arguments.
> 
> We do not rewrite the contents of the MRTD file so the ASPATH in the
> file will need to be acceptable to the BGP process.
> 
> This is the file used by our regression tests:
> <http://xorpc.icir.org/cgi-bin/cvsweb.cgi/data/bgp/icsi1.mrtd>
> 
>     Atanu.
> 
> 
>>>>>>"Ratul" == Ratul Mahajan <ratul@cs.washington.edu> writes:
> 
> 
>     Ratul> hi -
> 
>     Ratul> what method do the developers/testers use to load complete
>     Ratul> routing tables into xorp_bgp?
> 
>     Ratul> i want to load mrtd table_dumps and updates from routeviews
>     Ratul> (the dumps have routes from multiple peers). i am wondering
>     Ratul> what the best (fastest) way is to achieve this.
> 
>     Ratul> thanks.  _______________________________________________
>     Ratul> Xorp-hackers mailing list Xorp-hackers@icir.org
>     Ratul> http://mailman.ICSI.Berkeley.EDU/mailman/listinfo/xorp-hackers
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