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====== BGP Replay Tool ======


Used to test BGP Route Receiver that ships with Trisul.


1. Download BRT from http://caia.swin.edu.au/tools/bgp/brt/downloads.html


<note important>

**mp_ methods** 

We are getting the following error with version 0.2  ''Can't locate object method "mp_unreach_nlri" via package "Net::BGP::Update" at brt-0.2.pl line 263, <$fh> line 2.''

As a hack you can comment out the mp_unreach_nlri and mp_reach_nlri , if you arent interested in multipath. There seems to be an issue with the Net::BGP module.


</note>



2. Install the Perl Net::BGP module

<code>
sudo cpanm Net::BGP
</code>

3. On router under test 

say it has AS 400
<code>
sh bgp neighbors
debug ip bgp all
conf t
router bgp 400
neighbor 192.168.3.100  remote-as 300

</code>


4. Download a route update file in MRT format. The easiest way is to download from a collector see http://archive.routeviews.org/


5. Convert the MRT format update file to a format acceptable by brt using bgpdump

BRT tool needs a human readable BGP update file
''
 BGP update file in human readable with Unix format (bgpdump -m option)

''

Convert the file using bgpdump
''
bgpdump -m updates.20191101.0130  > updates.20191101.0130.bgpdump

''



6. Now you can inject routes into the router table.

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