RE: CIDR Utilization
John, Without going through the hassle of installing a full-blown IPAM solution you could use Python's netaddr library to accomplish what you are asking: >>> from netaddr import * >>> cidr = IPSet(['192.168.0.0/24']) >>> used = IPSet(['192.168.0.1','192.168.0.8/29','192.168.0.64/26']) >>> cidr ^ used IPSet(['192.168.0.0/32', '192.168.0.2/31', '192.168.0.4/30', '192.168.0.16/28', '192.168.0.32/27', '192.168.0.128/25']) Jeremiah Millay Senior Network Engineer Vermont Telephone Co., Inc. 354 River Street Springfield, VT 05156
RE: Cogent outage?
We just disabled our peering with Cogent in Boston and things have improved. We still have peering with them established in NYC (60 Hudson). Jeremiah Millay Network Engineer Vermont Telephone Co., Inc. Phone: 802 885-7796 Mobile: 802 289-2116 E-Mail: jmil...@vermontel.com -Original Message- From: Michael Proto [mailto:m...@jellydonut.org] Sent: Thursday, December 06, 2012 12:31 PM To: Matthew Huff Cc: nanog@nanog.org Subject: Re: Cogent outage? I'm seeing packet loss between my Atlanta Cogent connection and some servers we have in both Dallas and London. According to Cogent's status page they're having an outage in the NYC area. -Proto http://status.cogentco.com/ On Thu, Dec 6, 2012 at 12:11 PM, Matthew Huff wrote: > About 10 minutes ago we stopped being able to pass traffic through > cogent. I de-peered us from Cogent, and everything appears better. When I > call cogent, all I get is a busy signal (must be a major outage). Anyone else > seeing anything? > > > Matthew Huff | 1 Manhattanville Rd > Director of Operations | Purchase, NY 10577 > OTA Management LLC | Phone: 914-460-4039 > aim: matthewbhuff| Fax: 914-460-4139 > >
RE: Cogent outage?
Evan, We are hearing reports of this from our customers as well. We connect to them in NY and Boston. Jeremiah Millay Network Engineer Vermont Telephone Co., Inc. Phone: 802 885-7796 Mobile: 802 289-2116 E-Mail: jmil...@vermontel.com -Original Message- From: Evan Moore [mailto:emo...@sover.net] Sent: Thursday, December 06, 2012 12:17 PM To: 'Matthew Huff'; 'nanog@nanog.org' Subject: RE: Cogent outage? I may have seen this as well. I touch Cogent in Boston. Seems to be returning as of 1717 GMT. ERM Evan R Moore Network Engineer Sovernet Communications -Original Message- From: Matthew Huff [mailto:mh...@ox.com] Sent: Thursday, December 06, 2012 12:12 PM To: 'nanog@nanog.org' Subject: Cogent outage? About 10 minutes ago we stopped being able to pass traffic through cogent. I de-peered us from Cogent, and everything appears better. When I call cogent, all I get is a busy signal (must be a major outage). Anyone else seeing anything? Matthew Huff | 1 Manhattanville Rd Director of Operations | Purchase, NY 10577 OTA Management LLC | Phone: 914-460-4039 aim: matthewbhuff | Fax: 914-460-4139
