Windstream BGP admin
Got a change in windtream routing, massively down since the 23rd out of denver, any Windstream admin want to shoot me a e-mail and talk J Thanks, www.linktechs.net - 314-735-0270 - dmburg...@linktechs.net
Re: Charter ARP Leak
On Mon, 29 Dec 2014 14:23:56 -0500 (EST) Jay Ashworth wrote: > From an intermediate routing standpoint, though, it would be easier > to add an *adjacent* block, not one halfway across the address space, > no? One never knows how the address space is carved up. Changing what were once deemed reasonable addressing ideas, ultimately becoming grossly suboptimal, often loses out to competing interests. A long time ago, I arrived at a network where there were two major sites with many LANs at each site. Generally speaking each LAN was a department, but a department spanned both sites. Each department/LAN at a site started off with less than a /25 worth of nodes. This was apparently all done at a time when RIPv1 was the norm and multiple subnet sizes were not widely deployed if even available in the gear deployed. The arrangement I inherited was such that a department was assiged a /24, with the lower half (a /25) network at one site, and the upper half at the other. As long as the organization's assigned /16 always used /25's per network and departments split between sites fit into the /25 things might have been fine for awhile. By the time I arrived the address space was impossibly fragmented with some router interfaces having many secondaries as departments arose, grew, split, ceased to exist and new sites came online. This had the now predictable effect of turning a seemingly nice day one addressing plan into a fragmented and secondary mess. That was over 15 years ago and there are still remnants of the originally addressing plan in place. I wouldn't be too surprised or even too concerned about these sorts of configurations that appear poorly designed in hindsight. They are natural for most any complex system as it evolves. It is all part of the fun. John
Re: How our young colleagues are being educated....
On Thu, 25 Dec 2014 19:21:34 -0500 Miles Fidelman wrote: > Cisco as the basis of networking material? Does nobody use Comer, > Stallings, or Tannenbaum as basic texts anymore? I currently use a Comer book. I've also used a Tannenbaum book in the past, but not recently. My favorite book, when I've used it was Radia Perlman's. Increasingly I'm seeing a trend away from actually relying on books if even requiring them to be read anymore. This is both a trend with faculty and students. I frequently get asked if the book is required, even when the course page clearly says it is. Students and often faculty often I find rely too heavily on Wikipedia pages, which I've found myself going to update since they lead to wrong assumptions and answers in questions I've assigned. I like to augment, as many faculty do, classic or timely research papers into assignments so that students are at least forced to look at something other than vendor white papers and blog posts found in search engines. John
Re: The state of TACACS+
On Mon, Dec 29, 2014 at 04:25:56PM +0900, Randy Bush wrote: > > Rfc6613: TLS or IPsec transport is shown as mandatory for RADIUS over TCP. > > sweet. can you ref conforming implementations? FreeRADIUS and Radiator can do RADSEC, as well as radsecproxy, so it can be used to protect e.g. site-to-site proxying. I don't know whether any switches/NASes can do it at present, though. Matthew -- Matthew Newton, Ph.D. Systems Specialist, Infrastructure Services, I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom For IT help contact helpdesk extn. 2253,
