Cisco BRIB and dampened routes collection

A script is run every two hours to collect the (full) BGP RIB and dampened routes. This is an expect script that logs into route-views.routeviews.org, runs "show ip bgp" and "show ip bgp dampening", and archives the output.

The original collector script was written by Sean Mccreary of PCH. Due to IOS quirks, this script had problems with the magnitude of data from route-views.routeviews.org for the BGP RIB. It has been replaced with a script that uses the clogin expect script (from RANCID). It does something like similar to:

It will have to be customized for your environment, but has proven to be reliable.

Please do not collect the BGP RIB from Route-Views' routers yourself. Use the archive we provide or collect RIBs from your own router using the scripts.

Automated queries

It may be useful to run periodic commands on a Route-Views router. RANCID provides an expect script called "clogin" that easily automates command execution. For example, to collect all of your AS'es routes:

clogin -c 'show ip bgp regexp _YOURASN$' route-views.oregon-ix.net > /tmp/routes

BGP Beacon

A BGP beacon is a compact BGP speaker that announces and withdrawls a beacon prefix at specific intervals. The behavior of this prefix can then be analyzed closely.

Zhuoqing Morley Mao's BGP beacon software is availble at http://www.routeviews.org/scripts/bgpd.pl-agg-0.04_03_03_17.tar.gz or http://psg.com/~zmao/Software/bgpd.pl-agg-0.04_03_03_17.tar.gz.

Compression utilities

The data archives collected by Route-Views are compressed with either gzip (.gz) or bzip2 (.bz2). These utilities are available at:
http://www.gnu.org/software/gzip/gzip.html
ftp://sources.redhat.com/pub/bzip2/

MRT data files

• zebra-dump-parser is a perl script written by Marco d'Itri. This script is capable of parsing the RouteViews files, including the IPV6 RIBS from route-views6. At the top of the script, set the format to 1, and the ignore_v6_routes to 0. The code can be found at:
  http://www.linux.it/~md/software/zebra-dump-parser.tgz
• bgpdump is in the libbgpdump sources maintained by RIPE RIS. This code is slightly newer than some of the older tools, and has capabilities for decoding IPV4 MRT RIB table dump v2 format. Location is:
  http://www.ris.ripe.net/source/bgpdump/libbgpdump-1.4.99.11.tar.gz
• route_btoa comes with the MRTd package. It does not appear that MRTd is being actively maintained, but the source might be available from:
  http://mrt.sourceforge.net/

Zebra bits

• Zebra does not create directories prerequisite for it's MRT dumps. mkzebradirs does this for us. example cron usage:

  # create directories for zebra MRT dumps.  the interval is 6 days (518400 s)
  # so that we cover all months (those with 27 - 31 days).  if the path in
  # zebra's bgpd.conf changes, it needs to be reflected here.
  1 23 27 * * /usr/local/bin/mkzebradirs -i 518400 /mnt/bgpdata/%Y.%m/UPDATES /mnt/bgpdata/%Y.%m/RIBS
    

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