Re: Muni Fiber Last Mile - a contrary opinion
On Monday, December 27, 2010 01:04:33 am Owen DeLong wrote: > On Dec 26, 2010, at 7:35 PM, Frank Bulk - iName.com wrote: > Does that back up the cablemodem in the residence? If not, game over. > > Owen All of the Arris eMTA models have a version with built in battery backup, and as I recall drop net access and continue to provide phone power for some time. I know in our lab the one of the first things we make sure of, is that the batteries are not in them so we can do powercycle testing. --- Brian Raaen Network Architech Zcorum
Re: Last of ipv4 /8's allocated
On Tuesday, February 01, 2011 01:41:21 pm Rodrick Brown wrote: > http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xml > > Sent from my iPhone 4. Not quite, I still show 102/8, 103/8, 104/8, 179/8, and 185/8 as "UNALLOCATED". I don't know when the hand out the last 5 /8's policy takes affect, but they haven't handed them out yet. --- Brian Raaen Network Architech
Multicast over GRE between Linux server and Cisco Router
I am trying to set up multicast between a Linux server and Router using GRE. The GRE tunnel is up fine and I can see traffic go across it, but the router is not indicating it is receiving the IGMP joins that the server is sending. I have identical setting with another server attached to fastethernet0/1 and it is joined to the group fine, but I am not able to get the server to link to the router via GRE interface. Note that I have another server behind another router where the two routers do GRE and PIM and that on is working fine. Is there some reason that IGMP joins would not work across the GRE link, but another router using PIM would? -- Brian Christopher Raaen Network Architect Zcorum
Re: Multicast over GRE between Linux server and Cisco Router
Just a quick note. I do have multicast enabled on the server gre1 interface. A tshark capture shows the igmp group queries from the router and the igmp join reply from the server. On Wed, Jan 9, 2013 at 10:51 AM, Brian Christopher Raaen < mailing-li...@brianraaen.com> wrote: > I am trying to set up multicast between a Linux server and Router using > GRE. The GRE tunnel is up fine and I can see traffic go across it, but the > router is not indicating it is receiving the IGMP joins that the server is > sending. I have identical setting with another server attached to > fastethernet0/1 and it is joined to the group fine, but I am not able to > get the server to link to the router via GRE interface. Note that I have > another server behind another router where the two routers do GRE and PIM > and that on is working fine. Is there some reason that IGMP joins would > not work across the GRE link, but another router using PIM would? > > -- > Brian Christopher Raaen > Network Architect > Zcorum > -- Brian Christopher Raaen Network Architect Zcorum
Time Warner Routing Issue
I have a Time Warner circuit that has been giving me issues and what their tech support has been telling me has not matched my previous experience with other backbones. I have been trying to move the backbone on one site from a tier-3 provider to Time Warner. Yesterday TW started advertising BGP for the ip blocks I have (68.68.176.0/22 in /24's) before they had the circuit completed, so I had to make an emergency mid-day switch to move to Time Warner. Then yesterday night they stopped announcing my blocks so my site went down again and would still be completely down if we had not added NAT to the /30 point-to-point link. They said the reason was they didn't have an LOA (which they had gotten back in October) and the ip blocks were not in the Level3 Radb list. I could still see announcement to some peers (Shaw Cable in Canada) in a few looking glasses and BGP routers. However my network blocks were not showing for the larger US carriers like Qwest and AT&T. One of their techs just called me back and said that Level3 should be advertising it, but I still do not see the routes on the AT&T route server. After noting that the tech said that it may take another day for BGP to "propagate" to other peers as they update their radb tables. In my experience I've never seen anything where I had to wait for a route to propagate other than standard routing table updates which usually take less then an hour, and I'd really not expect this many problems between Tier1 and Tier2 providers. I need to know if this matches other's experience and wanting to know what other people were seeing with traceroutes and "show ip bgp". The networks in question at the following 4 /24's 68.68.176.0/24 68.68.177.0/24 68.68.178.0/24 68.68.179.0/24 the serial ip address is 72.43.84.254 Thanks for your assistance. --- Brian Raaen Zcorum Network Architect
Re: Time Warner Routing Issue
Thank you everyone for your assistance. Either having a tech spot my post and make the change or me calling their bluff got them to fix it. Thanks --- Brian Raaen Zcorum Network Architect On Wed, Dec 14, 2011 at 3:46 PM, Brian Christopher Raaen wrote: > I have a Time Warner circuit that has been giving me issues and what their > tech support has been telling me has not matched my previous experience > with other backbones. I have been trying to move the backbone on one site > from a tier-3 provider to Time Warner. Yesterday TW started advertising > BGP for the ip blocks I have (68.68.176.0/22 in /24's) before they had the > circuit completed, so I had to make an emergency mid-day switch to move to > Time Warner. Then yesterday night they stopped announcing my blocks so my > site went down again and would still be completely down if we had not added > NAT to the /30 point-to-point link. They said the reason was they didn't > have an LOA (which they had gotten back in October) and the ip blocks were > not in the Level3 Radb list. I could still see announcement to some peers > (Shaw Cable in Canada) in a few looking glasses and BGP routers. However > my network blocks were not showing for the larger US carriers like Qwest > and AT&T. One of their techs just called me back and said that Level3 > should be advertising it, but I still do not see the routes on the AT&T > route server. After noting that the tech said that it may take another day > for BGP to "propagate" to other peers as they update their radb tables. In > my experience I've never seen anything where I had to wait for a route to > propagate other than standard routing table updates which usually take less > then an hour, and I'd really not expect this many problems between Tier1 > and Tier2 providers. I need to know if this matches other's experience and > wanting to know what other people were seeing with traceroutes and "show ip > bgp". The networks in question at the following 4 /24's > > 68.68.176.0/24 > 68.68.177.0/24 > 68.68.178.0/24 > 68.68.179.0/24 > > the serial ip address is 72.43.84.254 > > Thanks for your assistance. > > --- > Brian Raaen > Zcorum > Network Architect
Re: ATT DSL IPv6
Probably, you were using Teredo or some other method to use IPv6. BTW if you have a Cisco gateway I have a blog post on how to set up a dynamic tunnel with HE. While native IPv6 would be best, the tunnel should work for you as I also have Bellsouth/AT&T DSL. http://www.brianraaen.com/2011/10/21/dynamic-he-tunnel-and-dyndns/ Brian Raaen Zcorum Network Architect On Mon, Jun 4, 2012 at 8:35 PM, Grant Ridder wrote: > Hi Everyone, > > Does anyone know about IPv6 on ATT residential DSL circuits? About 8 or 9 > months ago i ran through several IPv6 tests (http://test-ipv6.iad.vr.org/) > and they all passed. With all the talk of IPv6 day over the past week i > decided to run it again just out of curiosity. However to my surprise, it > is returning the result of IPv4 only now. Any ideas why they would have > rolled back IPv6? > > Thanks, > Grant
Re: guys != gender neutral
Here is the south we simply use "y'all". --- Brian Raaen Network Architect Zcorum On Thu, Sep 27, 2012 at 2:36 PM, JC Dill wrote: > On 27/09/12 11:10 AM, Jo Rhett wrote: >> >> Or when actually referring to persons of mixed gender, here's a quote from >> something I posted in a private forum (my own journal) which is safe for >> export: >>> >>> Because frankly, we're all in this together and honestly everyone loves >>> the competition. The guys I race with often come find me afterwards and tell >>> me where they got past me, or ask me how I kept passing them. The really >>> fast girls rarely want more than a beer to go out on the track and give you >>> a detailed breakdown on what you are doing wrong. We all help each other. >> >> >> In this situation I'm leaving it up the reader to grasp that I'm not >> saying that the girls are all faster than the boys, but I believe it's >> understood in context as the topic was about how peers help each other out. > > > It's NOT helping to equivocate "guys" and "girls"! > > Guys and gals = equivalent > Boys and girls = equivalent > Guys and girls != equivalent > > All the TV shows that refer to female contestants as "girls" are not helping > when they (universally) refer to the males as "guys". Unless you refer to > the male contestants (on TV) or team members (at work) as "boys" you > shouldn't be using the word "girls" to refer to the females. > > > >> I really wish that english had better pronouns for this. > > > I really wish folks would dig a bit deeper into the thesaurus to find > appropriate words. One can use a variety of gender neutral words with some > simple re-writing. Remember, it's perfectly OK to employ singular "they" as > well. > > http://en.wikipedia.org/wiki/Singular_they > > jc >
Re: RFC becomes Visio
The newest version of libreoffice draw can open Visio diagrams. --- Brian Raaen Zcorum On Tue, Oct 2, 2012 at 5:43 PM, Michael Hallgren wrote: > Le mardi 02 octobre 2012 à 23:25 +0200, Dan Luedtke a écrit : >> On Fri, 2012-09-28 at 19:31 +0100, Nick Hilliard wrote: >> > Here's a visio diagram you can send them: >> > >> > http://www.foobar.org/~nick/bgp-network-diagram.vsd >> >> Is there a .png version of it somewhere? >> The whole thread made my day, I'm eager to see this diagram as well. >> I don't have this MS Visio thingy you all use to set up your Avian >> Carrier BGP sessions... > > Don't use ``MS Visio thingy'', prefer TeX with metapost, PGF/TikZ (or > PSTRicks). The output is by far more beautiful, and maintaining the > document much more slim. > > Cheers, > mh > >> >> Regards >> >> Dan >> > > >
NIST NTP Server List
The list of NIST NTP servers is down for me, is anyone else seeing this? I'm getting a 404 error http://tf.nist.gov/tf-cgi/servers.cgi -- Brian Christopher Raaen Network Architect Zcorum
Re: NIST NTP Server List
I'm still getting a 404. I am using a Windstream backbone, is this maybe path/server specific. Here is a dig. dig tf.nist.gov ; <<>> DiG 9.9.5-3-Ubuntu <<>> tf.nist.gov ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46860 ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 2, ADDITIONAL: 2 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;tf.nist.gov. IN A ;; ANSWER SECTION: tf.nist.gov.1784IN CNAME tf.boulder.nist.gov. tf.boulder.nist.gov.86384 IN CNAME ftp.boulder.nist.gov. ftp.boulder.nist.gov. 86384 IN A 132.163.4.45 ;; AUTHORITY SECTION: boulder.nist.gov. 1485IN NS dns-y.boulder.nist.gov. boulder.nist.gov. 1485IN NS gdnsea.nist.gov. ;; ADDITIONAL SECTION: dns-y.boulder.nist.gov. 1485IN 2610:20:6b01:4::10 ;; Query time: 6 msec ;; SERVER: 68.70.255.9#53(68.70.255.9) ;; WHEN: Wed Oct 29 13:25:15 EDT 2014 ;; MSG SIZE rcvd: 168 On Wed, Oct 29, 2014 at 1:25 PM, Brian Christopher Raaen < mailing-li...@brianraaen.com> wrote: > I'm still getting a 404. I am using a Windstream backbone, is this maybe > path/server specific. Here is a dig. > > dig tf.nist.gov > > ; <<>> DiG 9.9.5-3-Ubuntu <<>> tf.nist.gov > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46860 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 2, ADDITIONAL: 2 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 4096 > ;; QUESTION SECTION: > ;tf.nist.gov. IN A > > ;; ANSWER SECTION: > tf.nist.gov.1784IN CNAME tf.boulder.nist.gov. > tf.boulder.nist.gov.86384 IN CNAME ftp.boulder.nist.gov. > ftp.boulder.nist.gov. 86384 IN A 132.163.4.45 > > ;; AUTHORITY SECTION: > boulder.nist.gov. 1485IN NS dns-y.boulder.nist.gov. > boulder.nist.gov. 1485IN NS gdnsea.nist.gov. > > ;; ADDITIONAL SECTION: > dns-y.boulder.nist.gov. 1485IN 2610:20:6b01:4::10 > > ;; Query time: 6 msec > ;; SERVER: 68.70.255.9#53(68.70.255.9) > ;; WHEN: Wed Oct 29 13:25:15 EDT 2014 > ;; MSG SIZE rcvd: 168 > > > > On Wed, Oct 29, 2014 at 1:22 PM, Chris Patsalou < > chrispatsa...@googlemail.com> wrote: > >> Appears up from here (London, UK) >> >> *NameIP AddressLocationStatusnist1-pa.ustiming.org >> <http://nist1-pa.ustiming.org>206.246.122.250Hatfield, PAAll services >> availabletime-a.nist.gov <http://time-a.nist.gov>129.6.15.28NIST, >> Gaithersburg, MarylandAll services busy, not recommendedtime-b.nist.gov >> <http://time-b.nist.gov>129.6.15.29NIST, Gaithersburg, MarylandAll services >> busy, not recommendedtime-c.nist.gov >> <http://time-c.nist.gov>129.6.15.30NIST, Gaithersburg, MarylandAll services >> availabletime-d.nist.gov <http://time-d.nist.gov>2610:20:6F15:15::27NIST, >> Gaithersburg, MarylandAll services via IPV6nist1-macon.macon.ga.us >> <http://nist1-macon.macon.ga.us>98.175.203.200Macon, GeorgiaAll services >> availablewolfnisttime.com >> <http://wolfnisttime.com>207.223.123.18Birmingham, AlabamaAll services >> availablenist.time.nosc.us >> <http://nist.time.nosc.us>96.226.242.9Carrollton, TexasAll services >> availablenist.expertsmi.com >> <http://nist.expertsmi.com>50.245.103.198Monroe, Michigantemporary >> failurenist.netservicesgroup.com >> <http://nist.netservicesgroup.com>64.113.32.5Southfield, MichiganAll >> services availablenisttime.carsoncity.k12.mi.us >> <http://nisttime.carsoncity.k12.mi.us>66.219.116.140Carson City, >> MichiganAll services availablenist1-lnk.binary.net >> <http://nist1-lnk.binary.net>216.229.0.179Lincoln, NebraskaAll services >> availablewwv.nist.gov <http://wwv.nist.gov>24.56.178.140WWV, Fort Collins, >> ColoradoAll services availabletime-a.timefreq.bldrdoc.gov >> <http://time-a.timefreq.bldrdoc.gov>132.163.4.101NIST, Boulder, Coloradontp >> ok; time, daytime busytime-b.timefreq.bldrdoc.gov >> <http://time-b.timefreq.bldrdoc.gov>132.163.4.102NIST, Boulder, ColoradoAll >> services busytime-c.timefreq.bldrdoc.gov >> <http://time-c.timefreq.bldrdoc.gov>132.163.4.103NIST, Boulder, Coloradontp >> ok; time, daytime busytime.nist.gov <http://time.nist.gov>global address >> for all serversMultiple locationsAll services availableutcnist.colorado.edu >> <http://utcnist.colorado.edu>128.138.140.44University of Colorado, >> BoulderAl
Re: NIST NTP Server List
That is interesting as the computer I am using is on dual-stack, and I am probably using IPv6 to reach it. On Wed, Oct 29, 2014 at 1:56 PM, Stefan Bethke wrote: > Seems to be working over IPv4, not over IPv6. > > $ curl -6 http://tf.nist.gov/tf-cgi/servers.cgi 2>/dev/null | head -5 > > > 404 Not Found > > Not Found > $ curl -4 http://tf.nist.gov/tf-cgi/servers.cgi 2>/dev/null | head -5 > > > NIST Internet Time Service > content="text/html;charset=iso-8859-1"> > src="/js/federated-analytics.all.min.js?agency=NIST&subagency=tf&pua= > UA-42404149-6&yt=true"> > > > > Am 29.10.2014 um 18:26 schrieb Brian Christopher Raaen < > mailing-li...@brianraaen.com>: > > > > I'm still getting a 404. I am using a Windstream backbone, is this maybe > > path/server specific. Here is a dig. > > > > dig tf.nist.gov > > -- > Stefan BethkeFon +49 151 14070811 > > > > > -- Brian Christopher Raaen Network Architect Zcorum
Re: NIST NTP Server List
I disabled IPv6 on my machine and was able to pull it up, reenable IPv6 and I start getting 404's. On Wed, Oct 29, 2014 at 3:36 PM, Christopher Morrow wrote: > On Wed, Oct 29, 2014 at 11:36 AM, Doug Barton wrote: > > Happy Eyeballs has nothing to do with it. This is a server > misconfiguration > > plain and simple. > > > > I meant that it seems that v4 is broken, but v6 is not. > so sure, it's a server thing, but he's seeing different results maybe > as a side effect of eyeballs. > > > Doug > > > > > > > > On 10/29/14 11:30 AM, Christopher Morrow wrote: > >> > >> On Wed, Oct 29, 2014 at 11:19 AM, Brian Christopher Raaen > >> wrote: > >>> > >>> That is interesting as the computer I am using is on dual-stack, and I > am > >>> probably using IPv6 to reach it. > >>> > >> > >> "happy eyeballs" > >> > >>> On Wed, Oct 29, 2014 at 1:56 PM, Stefan Bethke wrote: > >>> > >>>> Seems to be working over IPv4, not over IPv6. > >>>> > >>>> $ curl -6 http://tf.nist.gov/tf-cgi/servers.cgi 2>/dev/null | head -5 > >>>> > >>>> > >>>> 404 Not Found > >>>> > >>>> Not Found > >>>> $ curl -4 http://tf.nist.gov/tf-cgi/servers.cgi 2>/dev/null | head -5 > >>>> > >>>> > >>>> NIST Internet Time Service > >>>> >>>> content="text/html;charset=iso-8859-1"> > >>>> >>>> src="/js/federated-analytics.all.min.js?agency=NIST&subagency=tf&pua= > >>>> UA-42404149-6&yt=true"> > >>>> > >>>> > >>>>> Am 29.10.2014 um 18:26 schrieb Brian Christopher Raaen < > >>>> > >>>> mailing-li...@brianraaen.com>: > >>>>> > >>>>> > >>>>> I'm still getting a 404. I am using a Windstream backbone, is this > >>>>> maybe > >>>>> path/server specific. Here is a dig. > >>>>> > >>>>> dig tf.nist.gov > >>>> > >>>> > >>>> -- > >>>> Stefan BethkeFon +49 151 14070811 > >>>> > >>>> > >>>> > >>>> > >>>> > >>> > >>> > >>> -- > >>> Brian Christopher Raaen > >>> Network Architect > >>> Zcorum > > > > > -- Brian Christopher Raaen Network Architect Zcorum
Re: NIST NTP Server List
Still acting up for me this morning. On Wed, Oct 29, 2014 at 4:05 PM, Doug Barton wrote: > On 10/29/14 12:36 PM, Christopher Morrow wrote: > >> On Wed, Oct 29, 2014 at 11:36 AM, Doug Barton >> wrote: >> >>> Happy Eyeballs has nothing to do with it. This is a server >>> misconfiguration >>> plain and simple. >>> >>> >> I meant that it seems that v4 is broken, but v6 is not. >> > > Other way around. > > -- Brian Christopher Raaen Network Architect Zcorum
Re: NIST NTP Server List
It is now working over IPv6 On Thu, Oct 30, 2014 at 10:09 AM, Brian Christopher Raaen < mailing-li...@brianraaen.com> wrote: > Still acting up for me this morning. > > On Wed, Oct 29, 2014 at 4:05 PM, Doug Barton wrote: > >> On 10/29/14 12:36 PM, Christopher Morrow wrote: >> >>> On Wed, Oct 29, 2014 at 11:36 AM, Doug Barton >>> wrote: >>> >>>> Happy Eyeballs has nothing to do with it. This is a server >>>> misconfiguration >>>> plain and simple. >>>> >>>> >>> I meant that it seems that v4 is broken, but v6 is not. >>> >> >> Other way around. >> >> > > > -- > Brian Christopher Raaen > Network Architect > Zcorum > -- Brian Christopher Raaen Network Architect Zcorum
Issues with SNMP monitoring over a GRE tunnel.
I have two different customers where I am unable to monitor their networks due to GRE MTU issues. This is monitoring cable modems so I can't change the MTU of the end device. The problem I am having is that the modems are producing frames that appear to be larger than some kind of MTU limit in the system (we do not control the customer routers in either case). One that I am looking at is dropping anything larger than 1472, and I have let to tune down on the other one. In one case the customer endpoint is a Cisco ASR1K router and the other is a ASR9K. because these are UDP packets I can't use a mss to clamp things down. Also I have been unable to replicate the issue in my lab, so I can't send them a list of commands to help fix the issue on their end. -- Brian Christopher Raaen Network Architect Zcorum
Re: Ear protection
On Wed, Sep 23, 2015 at 8:50 AM, wrote: > When buying a compute cluster, if there's a budget choice between > 15 more teraflops, or 15 less decibels, the teraflops *always* win. > Loudly sounds like a flop to me puns fully intended -- Brian Christopher Raaen Network Architect Zcorum
Re: Ear protection
I normally have a set of Sennheiser HD-380's or HD-280's with my laptop. They have pretty good isolation and seem to make a pretty good difference, also I can either hear my phone or play music with them. When I mow the yard I use a pair of Koss headphones that isolate almost as good as a set of shooting muffs that I have. On Wed, Sep 23, 2015 at 7:18 PM, Don Nightingale wrote: > > Seconded. I wear my Shure 425s with foam plugs most of my waking hours, > they are excellent at blocking outside noise and sound pretty good to boot. > > > On 9/23/2015 11:02 AM, Eric Rogers wrote: > >> I use earphones for the phone and alerts function, and because they are >> noise cancelling, they lower the db of noise. I use Shure SE215. >> >> Eric Rogers >> PDS Connect >> www.pdsconnect.me >> (317) 831-3000 x200 >> >> -Original Message- >> From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Bryan Holloway >> Sent: Wednesday, September 23, 2015 9:48 AM >> To: Joe Greco; jim deleskie >> Cc: Alex Rubenstein; NANOG >> Subject: Re: Ear protection >> >> >> On 9/23/15, 7:53 AM, "NANOG on behalf of Joe Greco" >> wrote: >> >> Maybe I've always listened to my music to loud and spend the bulk of >>>> time via ssh, but I've never felt a need for hearing protection in a >>>> DC, is this generally an issue for people? >>>> >>> Depends on how long and how noisy. >>> >>> As I've gotten older, I find loud noise in general is less tolerable, >>> so I've taken to always keeping a pair of earplugs with me. It makes >>> being around loud music, etc., much more enjoyable. >>> >>> Long term exposure to noise is widely considered to be a hazard, but >>> walking into an average data center for an hour once a month is >>> probably not that risky. >>> >>> ... JG >>> >>> Depends on the type of "noise" too. >> >> Datacenters generate (more or less) white noise, which is particularly >> harmful long-term to the cilia in your ears because it excites all of >> them all of the time. A loud datacenter is much worse than a loud rock >> band, IMO. >> >> I personally use Bose noise-canceling headphones. >> >> >> > -- Brian Christopher Raaen Network Architect Zcorum
