Additions to the NSFNET policy-based routing database

Erik Sherk sherk at
Tue Apr 7 22:17:39 UTC 1992

> Erik,
> The total net numbers CONFIGURED in the NSFNET policy database <> the total
> routes actually ADVERTISED to the backbone.  The number that announced 
> to nwg every Tue and Fri is the configured number.  In order to get the
> actually advertised routes to T1, get on your T1 nss and do a netstat -Nn |wc.
> That is the real time advertised number, it may fractuate a bit due to the
> tempary outage of particular networks.  But you will get a general idea of
> the number.
> 						--Jessica

	I understand the difference between configured vs. announced networks.
That is not what I am asking. I must have been unclear in my previous question,
let me try again.

	If you grep "Total" from the March 10th network configuration announcment,
you get this:

aotearoa:[~/Mail/inbox] grep Total inbox/806
Total NSFNET T1 announced networks: 4835
Total NSFNET T3 announced networks: 2501

The total number of networks on each of the backbones has been different
in all of the announcements send out by Merit that I have seen. But today,
we find that they are the same:

aotearoa:[~/Mail/inbox] grep Total inbox/1233
 Total  T1 announced networks:  5012
       Total configured T3 networks:  5012

Oh, I see! You have changed the announcment to list "T1 announced" and "T3
configured". Would it be too much trouble to ask you to go back to the old


More information about the NANOG mailing list