Re: TCP congestion

2007-07-12 Thread Joe Loiacono
[EMAIL PROTECTED] wrote on 07/12/2007 02:07:00 PM: Typical Problem Scenario: Data transmission is humming along consistently at 2 Mbps, all of a sudden transmission rates drop to nothing then pickup again after 15-20 seconds. Prior to the drop off (based on packet capture) there is usually

Re: Thoughts on increasing MTUs on the internet

2007-04-12 Thread Joe Loiacono
Large MTUs enable significant throughput performance enhancements for large data transfers over long round-trip times (RTTs.) The original question had to do with local subnet to local subnet where the difference would not be noticable. But for users transferring large data sets over long

Re: Thoughts on increasing MTUs on the internet

2007-04-12 Thread Joe Loiacono
[EMAIL PROTECTED] wrote on 04/12/2007 04:05:43 PM: On Thu, 12 Apr 2007, Joe Loiacono wrote: Large MTUs enable significant throughput performance enhancements for large data transfers over long round-trip times (RTTs.) The original This is solved by increasing TCP window size

Re: Thoughts on increasing MTUs on the internet

2007-04-12 Thread Joe Loiacono
is not mine, it's not new, and there is empirical evidence to support it. Check out the links for more (and better :-) info. Joe [EMAIL PROTECTED] wrote on 04/12/2007 04:48:09 PM: On Thu, 12 Apr 2007, Joe Loiacono wrote: Window size is of course critical, but it turns out that MTU also impacts

Re: Broadband ISPs taxed for generating light energy

2006-10-10 Thread Joe Loiacono
Notice the date: October 10. That is the Indian equivalent of our April 1. Joe [EMAIL PROTECTED] wrote on 10/10/2006 10:28:13 AM: .. because they provide internet over fiber optic cables, which workby sending pulses of light down the cable to push packets ..

Re: text based netflow top ASN tool?

2006-08-04 Thread Joe Loiacono
... or perhaps flow-tools? Installs easy. Great capability. http://freshmeat.net/projects/flow-tools/ http://www.splintered.net/sw/flow-tools/ matthew zeier [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 08/04/2006 02:04 AM To [EMAIL PROTECTED] cc Subject text based netflow top

Sticky Bogons

2006-01-11 Thread Joe Loiacono
a little help ... - Forwarded by Joe Loiacono/CIV/CSC on 01/11/2006 10:51 AM - Dong Yan dongyan @cnnic.cn Sent by: apnic-talk-bounces 01/09/2006 10:17 PM To: [EMAIL PROTECTED], [EMAIL PROTECTED] cc: Chen Tao [EMAIL PROTECTED], Xiangjian Li [EMAIL PROTECTED

Re: what will all you who work for private isp's be doing in a few years?

2005-05-12 Thread Joe Loiacono
So imagine a residential area all pulling digital video over wireless. Sound familiar? Ironically close to TV! (yet so different) What I can't understand is why multicast hasn't just gone gangbusters into use yet. I see it as a really pent-up capability that, in light of broadband video,

Re: Weekly Routing Table Report

2005-04-08 Thread Joe Loiacono
Wha happen? Routing Table Report 04:00 +10GMT Sat 09 Apr, 2005 Analysis Summary BGP routing table entries examined: 139674 Prefixes after maximum aggregation: 83474 Unique aggregates announced to Internet:

Re: size of the routing table is a big deal, especially in IPv6

2004-11-30 Thread Joe Loiacono
) of these /48 Class A's. The overall Aggregatable Global Unicast range (001::/3) holds 45 bits worth of routable networks. This clearly exceeds any router's capacity to accommodate a routing table of strictly /48s. Joe Loiacono

Re: animations from Making Sense of BGP talk available

2004-02-11 Thread Joe Loiacono
Cool tool! It's amazing to see BGP in action and what 'really' happens. A comment: could you define the number of prefixes a little more? E.g., is it the total imported and exported across the link, imported only, exported only, context dependent, etc. Thanks! Joe Loiacono

Re: PSINet/Cogent Latency

2002-07-24 Thread Joe Loiacono
Actually RRDTool interpolates any late replys to the nearest specified collection timepoint (e.g., every 5th minute.) It doesn't really resample. Joe Matt