How it works ("old-style")

THE GRH PROJECT HAS BEEN CONCLUDED

As IPv6 Routing Stability has improved over the years we have concluded the GRH project.

The GRH pages remain for a historical perspective.

The ULA Registry remains active.

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 ISPs 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:
- 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.