Announcement Propagation Delay in BGP

Fri Aug 19 21:33:52 UTC 2005

Scott Weeks wrote:
> I am going to be announcing two new prefixs into BGP soon
> and the netgeek in me is very curious as to the length of
> time it takes to show up in other parts of the world that're
> logically far from Hawaii.  Instead of going to
> www.traceroute.org and refreshing repeatedly, I thought
> folks here might've created a tool to do just that.  Or,
> perhaps, someone else has stats on a test they ran in the
> past.  

Non-scientific test, but I've seen new prefixes appear at the Oregon-IX 
route server in <20 seconds (we're only in Texas), and reach a modestly 
steady state in <90 seconds.  I've seen adjustments (prepending, etc.) 
appear in 45+ seconds, and withdraws in probably the same time.

pt