How it works ("old-style")

GRH (Ghost Route Hunter) is a centralized mechanism for collecting routes and detecting the anomalies therein. We keep a history of these Ghost Routes providing a means of visualizing the problem. The ultimate target is to have no ghosts at all. As we have availability over several BGP tables we also collect prefix statistics and provide a distributed looking glass into these tables.

The Ghost Route Hunting process has the following four steps:

• Collect routing tables (show ipv6 bgp) from different ISP's who participate in the routing process.
  • Pull: Fetch of remote URL's (HTTP and FTP)
  • Pull: Direct router dumps
  • Pull: Route server access
• Process the collected routing tables.
  Supported routers currently include:
  
  • Cisco
  • Zebra
  • Juniper
  Other routers on request.
  
• Record collected data into the database:
• Database Interfaces for viewing the results:
  • The Ghosts
  • DFP visibility
  • Distributed Looking Glass
  Other interfaces on request.

A snapshot of all the collected tables are kept per day in the archives. All the ghosts are kept per 10 minutes.