Re: How to find all of an ISP's ASNs

2016-10-27 Thread Curtis Doty
On Tue, Oct 25, 2016 at 9:03 PM, Hank Nussbacher wrote: > and if that doesn't work try: > http://bgp.he.net/AS3356#_graph4 > [replace the ASN with the ASN of your choice to see the interconnections.] > ​Doesn't always work--as it will only show upstream ASNs. For example, Comcast's backbone AS

Re: BGP multihoming with two address spaces

2014-01-29 Thread Curtis Doty
According to telnet://route-server.twtelecom.net and http://lookingglass.level3.net/bgp/lg_bgp_main.php BGP is working as designed. Your single prepend on one prefix with TWTC causes a slight preference for LVL3. Add another prepend if you want to further balance your ingress load away from TWTC.

Re: BGPMON Alert Questions

2014-04-02 Thread Curtis Doty
On Wed, Apr 2, 2014 at 1:24 PM, Blake Dunlap wrote: > Is this malicious or did someone redistribute all of bgp with bad upstream > filtering? > They perfectly re-advertized all mine. Loos like a huge mistake. And still ongoing. Although this was nice to see: ==

Re: Experiences with Spamhaus BGP DROP, EDROP and BGPCC BGP feeds

2014-01-16 Thread Curtis Doty
On Thu, Jan 16, 2014 at 11:04 AM, John Levine wrote: > If you're a tiny little network, you can > use the public DNS servers for the BL lookups, and you can > FTP the text version of DROP and turn in into firewall > rules or whatever. That's what I do (hack perl scripts > available on request.)

Re: out-of-band access bandwidth

2009-01-27 Thread Curtis Doty
1:54pm wingying said: A quick question, what is the common bandwidth for out-of-band access? If you administer the metro MPLS for a large city, apparently about "1,100...modems hidden away in locked filing cabinets in public buildings around the city." http://weblog.infoworld.com/venezia/ar