Re: Netalyzr Android: call for volunteers
Is there any plan of making the netalyzer open source , and if it is already open source please provide the link so we could use it Thanks -Aslam On Sun, Oct 12, 2014 at 4:09 PM, Jay Ashworth j...@baylink.com wrote: Is spiffy... but any chance that you could add testing for intermediate carrier BCP 38 compliance? On October 5, 2014 6:43:31 PM EDT, Srikanth Sundaresan srika...@gatech.edu wrote: Hi all, Netalyzr is a free network measurement and debugging app developed by the International Computer Science Institute, Berkeley. It is designed to check for a wide range of network problems and neutrality violations, including unadvertised port filtering, DNS wildcarding, and hidden proxy servers. Our browser applet has more than a million runs. Netalyzr for Android was released in October 2013. We are happy to announce a new release that has new tests for better middlebox probing and a better UI. If you're interested, you can download and run the app from Google Play [1]. If you already have the app, please consider updating and re-running it - it would be very helpful for us to capture updates regarding how the mobile Internet is evolving. Oh and: please consider watching our talk at NANOG 62 on Monday [2]! Thanks, The Netalyzr Team. [1] https://play.google.com/store/apps/details?id=edu.berkeley.icsi.netalyzr.androidhl=en [2] https://www.nanog.org/meetings/abstract?id=2419 -- Sent from my Android phone with K-9 Mail. Please excuse my brevity.
Re: Multi-port RFC2544/EtherSAM loopback appliance
We have been using the VeEX UX400 platform. It has a portable and rack-mount version, we have the portable so I can't comment on the rack-mount variant. We found the price/feature set to be better than several other vendors that we evaluated. We've had the equipment for several months now and found it to perform great. chad On 9/26/14, 7:51 AM, Jason Lixfeld wrote: Group, I'm looking for options and opinions on a cost effective, multi-port (6'ish port SFP/SFP+) RFC2544/EtherSAM rack appliance that can act as the remote/loopback for our field installers' portable RFC2544/EtherSAM enabled Exfo test sets. I came across XenaNetworks XenaCompact which looks like it would fit the bill, but I'm sure there are others (save Ixia, Exfo and Fluke, which I'm pretty much excluding by default because I imagine they are likely completely out to lunch on price relative to the extremely simplified feature set we require). Thanks in advance. The information contained in this e-mail message may be privileged, confidential and protected from disclosure. If you are not the intended recipient, any dissemination, distribution or copying is strictly prohibited. If you think that you have received this e-mail message in error, please e-mail the sender at the above e-mail address.
Anyone shed light on Verizon blocking pop3 offnetwork?
I have a customer that left Verizon FIOS when he moved but kept his email address. About a month ago, he says his pop3 quit connecting. I've tested the ports he's using and notice they aren't responding. He's tried helpdesk and they sent him to the abuse whitelist. He tried the abuse@, which of course wouldn't be the correct location. Any recommendations? Jack
Keeping Track of Data Usage in GB Per Port
I see in past news articles that cable companies are inaccurately calculating customers data usage for their online GB of usage per month. My question is how do you properly determine how much traffic in bytes a port passes per month? Is it different if we are talking about an ethernet port on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Why are the cable companies having such a hard time? Is it hard to calculate data usage per port? Is it done with SNMP or some other method? What is the best way to monitor a 48 port switch for example, and know how much traffic they used? https://gigaom.com/2013/02/07/more-bad-news-about-broadband-caps-many-meters-are-inaccurate/
Re: Keeping Track of Data Usage in GB Per Port
On Wed, 15 Oct 2014 13:06:56 -0500, Colton Conor said: on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Assume a 20mbit connection. How many times can this roll over a 32 bit counter in a month if it's going full blast? pgp9gTbRaH7Y0.pgp Description: PGP signature
Re: Anyone shed light on Verizon blocking pop3 offnetwork?
Good luck. Let me know if you find anybody with a clue over there. Last week we took over ZoneEdit (DNS Provider + mail forwarding) and they started blocking the new ZoneEdit mail forwarders within a couple hours of go-live - almost certainly it's some statistical based block because of the sudden influx of mail from a new IP. Impossible to get ahold of anybody, multiple delist requests go unanswered. Almost considering blocking verizon across everything we control just to get somebody's f***ing attention over there. - mark Jack Bates wrote: I have a customer that left Verizon FIOS when he moved but kept his email address. About a month ago, he says his pop3 quit connecting. I've tested the ports he's using and notice they aren't responding. He's tried helpdesk and they sent him to the abuse whitelist. He tried the abuse@, which of course wouldn't be the correct location. Any recommendations? Jack -- Mark E. Jeftovic mar...@easydns.com Founder CEO, easyDNS Technologies Inc. +1-(416)-535-8672 ext 225 Read my blog: http://markable.com
Re: Keeping Track of Data Usage in GB Per Port
On Oct 15, 2014, at 2:14 PM, valdis.kletni...@vt.edu wrote: On Wed, 15 Oct 2014 13:06:56 -0500, Colton Conor said: on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Assume a 20mbit connection. How many times can this roll over a 32 bit counter in a month if it's going full blast? If your switch doesn’t support 64-bit counters return it. - Jared
Re: Anyone shed light on Verizon blocking pop3 offnetwork?
No issues here coming from Level 3, CenturyLink, Mammoth, or Comcast. Able to telnet to pop.verizon.net on 995 and smtp.verizon.net on 465. Regards, SG On 10/15/2014 11:55 AM, Jack Bates wrote: I have a customer that left Verizon FIOS when he moved but kept his email address. About a month ago, he says his pop3 quit connecting. I've tested the ports he's using and notice they aren't responding. He's tried helpdesk and they sent him to the abuse whitelist. He tried the abuse@, which of course wouldn't be the correct location. Any recommendations? Jack
Re: Anyone shed light on Verizon blocking pop3 offnetwork?
I have 5 telephone companies that cannot reach it. :( jack On 10/15/2014 1:22 PM, Spencer Gaw wrote: No issues here coming from Level 3, CenturyLink, Mammoth, or Comcast. Able to telnet to pop.verizon.net on 995 and smtp.verizon.net on 465. Regards, SG On 10/15/2014 11:55 AM, Jack Bates wrote: I have a customer that left Verizon FIOS when he moved but kept his email address. About a month ago, he says his pop3 quit connecting. I've tested the ports he's using and notice they aren't responding. He's tried helpdesk and they sent him to the abuse whitelist. He tried the abuse@, which of course wouldn't be the correct location. Any recommendations? Jack
Re: Keeping Track of Data Usage in GB Per Port
Folks, use sflow with rrdtool! Quite awesome handy On 15/10/2014 20:14, valdis.kletni...@vt.edu wrote: On Wed, 15 Oct 2014 13:06:56 -0500, Colton Conor said: on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Assume a 20mbit connection. How many times can this roll over a 32 bit counter in a month if it's going full blast?
Re: Keeping Track of Data Usage in GB Per Port
So based on the response I have received so far it seems cable was a complicated example with service flows involved. What if we are talking about something simpler like keeping track of how much data flows in and out of a port on a switch in a given month? I know you can use SNMP, but I believe that polls in intervals and takes samples which isn't really accurate right? On Wed, Oct 15, 2014 at 1:40 PM, na...@jack.fr.eu.org wrote: Folks, use sflow with rrdtool! Quite awesome handy On 15/10/2014 20:14, valdis.kletni...@vt.edu wrote: On Wed, 15 Oct 2014 13:06:56 -0500, Colton Conor said: on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Assume a 20mbit connection. How many times can this roll over a 32 bit counter in a month if it's going full blast?
Re: Keeping Track of Data Usage in GB Per Port
On Wed, Oct 15, 2014 at 12:38 PM, Colton Conor colton.co...@gmail.com wrote: So based on the response I have received so far it seems cable was a complicated example with service flows involved. What if we are talking about something simpler like keeping track of how much data flows in and out of a port on a switch in a given month? I know you can use SNMP, but I believe that polls in intervals and takes samples which isn't really accurate right? It depends on what you're talking about. Network devices implementing the SNMP IF-MIB have counters for each interface that when polled, show the number of bytes being transmitted and received. Conventionally, network operators poll these counter values, compute the difference from the last time it was polled, and extrapolate a rate (bit volume over a time unit) from that. Often, this is done over a 5 minute interval. This introduces some averaging error. However, if an operator is just computing cumulative transfer, it's pretty easy. Just continue to sum up the counter value deltas from poll to poll. It could be easy to mess this up if the counter size is too small, or rolls more than once in-between polls. If a large telecom can't get billing correct, they shouldn't be allowed to do business. Easier solution: stop metering customers, and sink more money into expanded infrastructure.
Re: UPDATE: Anyone shed light on Verizon blocking pop3 offnetwork?
Okay. This appears to be Network based filters. We cannot connect from networks in 104/8, 158/8, or 107/8. We are able to connect using the provider IP Address on the border routers. We also had an upstream test from 199/8 and they were successful. I've already sent emails to the whois contact without response. Jack Bates On 10/15/2014 12:55 PM, Jack Bates wrote: I have a customer that left Verizon FIOS when he moved but kept his email address. About a month ago, he says his pop3 quit connecting. I've tested the ports he's using and notice they aren't responding. He's tried helpdesk and they sent him to the abuse whitelist. He tried the abuse@, which of course wouldn't be the correct location. Any recommendations? Jack
Re: Keeping Track of Data Usage in GB Per Port
You may want to start learning more at http://www.netforecast.com/wp-content/uploads/2014/05/NFR5116_Comcast_Meter_Accuracy_Report.pdf. This report is written by Netforecast – the same firm interviewed by GigaOm in the story link you provided. Their first audit was in 2009: http://www.netforecast.com/wp-content/uploads/2012/06/NFR5101_Comcast_Usage_Meter_Accuracy_Original.pdf Their 2nd audit was in 2010: http://www.netforecast.com/wp-content/uploads/2012/06/NFR5101_Comcast_Usage_Meter_Accuracy.pdf And here is a report on best practices for data usage in cable networks: http://www.netforecast.com/wp-content/uploads/2012/10/NFR5110_ISP_Data_Usage_Meter_Specification_Best_Practices_for_MSOs1.pdf - Jason Livingood Comcast On 10/15/14, 12:06 PM, Colton Conor colton.co...@gmail.commailto:colton.co...@gmail.com wrote: I see in past news articles that cable companies are inaccurately calculating customers data usage for their online GB of usage per month. My question is how do you properly determine how much traffic in bytes a port passes per month? Is it different if we are talking about an ethernet port on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Why are the cable companies having such a hard time? Is it hard to calculate data usage per port? Is it done with SNMP or some other method? What is the best way to monitor a 48 port switch for example, and know how much traffic they used? https://gigaom.com/2013/02/07/more-bad-news-about-broadband-caps-many-meters-are-inaccurate/
Re: Keeping Track of Data Usage in GB Per Port
There are lots of ways to do it. Cable uses IPDR, which is baked into DOCSIS standards. http://en.wikipedia.org/wiki/Internet_Protocol_Detail_Record On 10/15/14, 1:38 PM, Colton Conor colton.co...@gmail.com wrote: So based on the response I have received so far it seems cable was a complicated example with service flows involved. What if we are talking about something simpler like keeping track of how much data flows in and out of a port on a switch in a given month? I know you can use SNMP, but I believe that polls in intervals and takes samples which isn't really accurate right? On Wed, Oct 15, 2014 at 1:40 PM, na...@jack.fr.eu.org wrote: Folks, use sflow with rrdtool! Quite awesome handy On 15/10/2014 20:14, valdis.kletni...@vt.edu wrote: On Wed, 15 Oct 2014 13:06:56 -0500, Colton Conor said: on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Assume a 20mbit connection. How many times can this roll over a 32 bit counter in a month if it's going full blast?
Re: Keeping Track of Data Usage in GB Per Port
On 10/15/14, 1:38 PM, Colton Conor colton.co...@gmail.com wrote: So based on the response I have received so far it seems cable was a complicated example with service flows involved. Don't forget that between your port on your DSL/Cable modem and the actual port they may be monitoring there could be transitions through various protocols that can chew up bandwidth with framing bits and whatnot. See: http://www.yourdictionary.com/cell-tax as an example. This can, in worse but common cases, be as much as one fifth of the bandwidth. -- Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474
Re: Keeping Track of Data Usage in GB Per Port
IPDR under DOCSIS and generally RADIUS or TACACS(+) for DSL. Unclear personally about fiber/FiOS deployments (never been near enough to know) Flow (sflow, nflow, ipfix, etc) generally doesn't scale and is woefully inaccurate. On Wednesday, October 15, 2014, Colton Conor colton.co...@gmail.com wrote: I see in past news articles that cable companies are inaccurately calculating customers data usage for their online GB of usage per month. My question is how do you properly determine how much traffic in bytes a port passes per month? Is it different if we are talking about an ethernet port on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Why are the cable companies having such a hard time? Is it hard to calculate data usage per port? Is it done with SNMP or some other method? What is the best way to monitor a 48 port switch for example, and know how much traffic they used? https://gigaom.com/2013/02/07/more-bad-news-about-broadband-caps-many-meters-are-inaccurate/ -- Genius might be described as a supreme capacity for getting its possessors into trouble of all kinds. -- Samuel Butler
Re: Keeping Track of Data Usage in GB Per Port
This all becomes even more complicated when some traffic isn't counted (Eg. free facebook) on a given service which generally then necessitates the need for some level of flow-based accounting, even if it's just collecting flows for the free traffic to subtract from the port counters. I can see how it could get messy. On 16.10.2014 12:20, Michael Loftis wrote: IPDR under DOCSIS and generally RADIUS or TACACS(+) for DSL. Unclear personally about fiber/FiOS deployments (never been near enough to know) Flow (sflow, nflow, ipfix, etc) generally doesn't scale and is woefully inaccurate. On Wednesday, October 15, 2014, Colton Conor colton.co...@gmail.com wrote: I see in past news articles that cable companies are inaccurately calculating customers data usage for their online GB of usage per month. My question is how do you properly determine how much traffic in bytes a port passes per month? Is it different if we are talking about an ethernet port on a cisco switch vs a DSL port on a DSLAM for example? I would think these access switches would have some sort of stat you can count similar to a utility meter reader on a house. See what it was at last month, see what is is at this month, subtract last months from this months, and the difference is the total amount used for that month. Why are the cable companies having such a hard time? Is it hard to calculate data usage per port? Is it done with SNMP or some other method? What is the best way to monitor a 48 port switch for example, and know how much traffic they used? https://gigaom.com/2013/02/07/more-bad-news-about-broadband-caps-many-meters-are-inaccurate/
Sigh. 16 years ago today.
https://www.ietf.org/rfc/rfc2468.txt
