Re: home router battery backup
On Thu, Jan 13, 2022 at 10:29:13PM +, John Lightfoot wrote: > > In Vermont I have a Tesla Powerwall that Green Mountain Power > paid for if I agreed to let them manage it. Since then I've > never had an outage of any kind, I usually figure out that there > is one by seeing my neighbors' lights go off. Wow, that's a nice program. Do you know what they keep the "reserve percentage" set to, the proportion of stored energy that will never be discharged for grid-support, but held back for island-mode use in case of an outage? > I've also had great luck with my ISP, which is Comcast. Even > before we had the Powerwall, when the power would go out the > (older) Comcast router would work on its own battery backup and > my laptop would flip over to battery power, so I didn't have any > loss of connectivity even then. In my part of northeast Florida, although Comcast has installed outside-plant batteries when extending service to new developments, as of 2015 they would wait until customers complained (or perhaps until "enough" ordered their voice service) to upgrade older neighborhoods. Service in my area used to drop immediately at even a fractional- second grid power glitch, despite having many hours of backup on my end. It took about two months of nagging them to get the Alpha Power box supporting our fiber<->coax node and line amps replaced with one containing batteries, and nearly as long for a friend across town in the same position. Although I don't have Comcast voice service, instead using my own over-the-top VoIP, several neighbors already did by this time. I'm surprised they weren't concerned for liabiilty over failed 911 calls. Hopefully this policy has improved in the years since, but their lack of proactive replacement of failed outside-plant batteries suggests otherwise. Rather than changing these out on a schedule, or when failure is signaled by the equipment, they still appear to wait until someone complains, after which expired batteries *might* get swapped in a month or so. Voice-capable gateways and eMTA's provided to Comcast Business customers do contain lithium batteries good for several hours of service, longer than most PBXes are backed up for, but of course these are of no use when the outside plant lacks backup. For residential customers, they seem to be charging a considerable premium for the battery option: https://www.xfinity.com/support/articles/getting-a-new-battery "A backup battery for certain Comcast-provided modems can be purchased from Comcast at any time and are currently priced at $165, plus tax. Your purchase includes 24 hours of standby time, a one-year warranty and monitoring to determine when you need to purchase a new battery." -- Jordan.
Re: home router battery backup
On Thu, Jan 13, 2022 at 02:06:39PM -0800, Michael Thomas wrote: > > For my ISP, they maintain backup power for both DSL and POTS. I > suspect that for a lot of DSL that would hold true because it's > relatively easy for them to power since they already have the > battery backup requirements for POTS. The setup they have here > is a DSLAM and SIP->POTS termination in a pedestal with fiber > backhaul. They use the old copper that used to go back to the CO > to power the pedestal. Do you happen to know what voltage is placed across the copper pairs for this purpose? Maybe 130V like T1 span repeaters? More? I used to have three POTS lines at home from BellSouth, before the AT&T acquisition, with DSL on one of them, all supposedly served from the same Lucent SLC. One of these, the one originally used for DSL, would always go down for both voice and data when the SLC lost power-- no DC, no dialtone, no DSL, while the other two remained up. Despite several claims of a resolution, this was never properly fixed, so eventually I just had them move DSL over to one of the unaffected lines. I could never understand what failure mode would result in losing just a single POTS line like this while the carrier equipment was running from battery, while others remained in service. Speculating, perhaps only the A or B-side was backed up, and an open diode or other defect caused a single ine card to draw only from the "other" source? But, at this time (circa 2000) the remote DSLAM was definitely a separate piece of equipment, right, joined to a shared subscriber pair with passive splitters? > Mike -- Jordan.
Re: Strange behavior on the Juniper MX240
0 > GOT: 16 800 > GOT: 48 336 32 > > > request pfe execute target fpc1 command "show jtree 0 memory extensive" > SENT: Ukern command: show jtree 0 memory extensive > GOT: > GOT: Jtree memory segment 0 (Context: 0x447cc698) > GOT: --- > GOT: Memory Statistics: > GOT:16777216 bytes total > GOT:16715840 bytes used > GOT: 56184 bytes available (8192 bytes from free pages) > GOT:3024 bytes wasted > GOT:2168 bytes unusable > GOT: 32768 pages total > GOT: 32533 pages used (2568 pages used in page alloc) > GOT: 219 pages partially used > GOT: 16 pages free (max contiguous = 5) > GOT: > GOT: Partially Filled Pages (In bytes):- > GOT: UnitAvail Overhead > GOT: 8255440 > GOT: 16133120 > GOT: 24 8352 2040 > GOT: 32 3520 > GOT: 48 432 128 > GOT: > GOT: Free Page Lists(Pg Size = 512 bytes):- > GOT:Page Bucket Avail(Bytes) > GOT:1-1 2048 > GOT:2-2 1024 > GOT:5-5 5120 > GOT: > GOT: Fragmentation Index = 0.954, (largest free = 2560) > GOT: Counters: > GOT: 2645725 allocs (0 failed) > GOT: 2 releases(partial 0) > GOT: 1096891 frees > GOT: 0 holds > GOT: 0 pending frees(pending bytes 0) > GOT: 0 pending forced > GOT: 0 times free blocked > GOT: 0 sync writes > GOT: Error Counters:- > GOT: 0 bad params > GOT: 0 failed frees > GOT: 0 bad cookie > GOT: > GOT: Jtree memory segment 1 (Context: 0x4484e2d8) > GOT: --- > GOT: Memory Statistics: > GOT:16777216 bytes total > GOT: 4589504 bytes used > GOT:12185432 bytes available (12184576 bytes from free pages) > GOT:2248 bytes wasted > GOT: 32 bytes unusable > GOT: 32768 pages total > GOT:8967 pages used (8967 pages used in page alloc) > GOT: 3 pages partially used > GOT: 23798 pages free (max contiguous = 23798) > GOT: > GOT: Partially Filled Pages (In bytes):- > GOT: UnitAvail Overhead > GOT: 8 4240 > GOT: 16 960 > GOT: 48 336 32 > GOT: > GOT: Free Page Lists(Pg Size = 512 bytes):- > GOT:Page Bucket Avail(Bytes) > GOT: 27-32768 12184576 > GOT: > GOT: Fragmentation Index = 0.000, (largest free = 12184576) > GOT: Counters: > GOT: 45 allocs (0 failed) > GOT: 0 releases(partial 0) > GOT: 0 frees > GOT: 0 holds -- Jordan.
RE: Calling Crown Castle Fibre sales
Hit me off list. I will give you the contact information for whom I deal with, and even if he cannot help you directly, he can probably provide a push internally. Thanks, Jordan Medlen Director, Technology Services P 813.612.6207 -Original Message- From: NANOG On Behalf Of Jason Lixfeld Sent: Thursday, April 9, 2020 11:02 AM To: NANOG mailing list Subject: Calling Crown Castle Fibre sales Can someone from Crown Castle Fibre sales ping me? I haven’t heard back after submitting on your contact form. Thanks.
Re: home router battery backup
here its lower gravimetric & volumetric energy density (vs NMC) doesn't matter so much. NMC has economies of scale going for it, though, along with what's likely to be an ever-increasing supply of worn electric vehicle packs, replaced after showing reduced range in that role but will plenty of life left for other applications. > Mark. -- Jordan.
Re: home router battery backup
isy MSW inverter, but did complicate their eventual upgrade to a larger system and its required 48V battery bank. They required a large DC/DC converter, losing out on some of the efficiency gain, and elected not to extend 12V when building a new addition onto the home. > It was mentioned that we need to address *reducing* our power > consumption in order to reduce our carbon footprint. This ongoing project > has helped me to do just that and eliminate so many "power suckers" and > wall-warts from my home. This was part of my motivation as well, but thanks to efficiency mandates in the EU and elsewhere, most modern wall-warts and other PSUs are not nearly so bad as they used to be. A good switchmode design with cycle-skipping, where the main oscillator only runs intermittently at low or zero load, can be enough to reduce standby loss to 0.2W or less. > We consume around 150 watts on DC and generally around 600 watts on AC > (unless a freezer or air conditioner cycles on). When the power goes out, > sometimes we don't immediately notice it! I think I am living inside a > giant UPS, and more independance from the Grid is refreshing. With no HVAC, freezer/fridge or well pump running, we're usually in the 250-300W range, which includes the DC rectifier. A neighbor was puzzled at calling to ask if our power was out, when I said "let me go check...' > Enjoy! >--- Jay Nugent WB8TKL >Ypsilanti, Michigan >j...@nuge.com -- Jordan - AK4PZ
Re: Level 3 issues?
Have been seeing issues since just after 3P. Had to swing my traffic over to another provider. Level3 says issues seen from Costa Rica on up to WDC. Thank you, Jordan Medlen Enterprise Communications Manager Bisk Education (813) 612-6207 <http://www.bisk.com/> On 5/16/16, 3:49 PM, "NANOG on behalf of David Hubbard" wrote: >Anyone seeing issues with Level 3 networking right now? We’re seeing huge >latency and loss on traffic coming inbound (to us, AS33260) but it seems to be >at the peering points with other major ISP’s and Level 3. Comcast for example: > > 333 ms21 ms70 ms te-3-5-ur01.hershey.pa.pitt.comcast.net > [68.85.42.29] > 4 * 33 ms 106 ms 162.151.48.173 > 5 214 ms54 ms41 ms 162.151.21.229 > 6 561 ms 764 ms 459 ms 4.68.71.133 > >Thanks, > >David
Re: VPS providers contacts
Virtkick was acquired by OnApp (https://www.virtkick.com/blog/onapp-to-acquire-virtkick.html), so you might be able to contact OnApp about it. Hope this helps. -- Kind regards, Jordan Michaels Vivio Technologies - Original Message - From: "Mehmet Akcin" To: "nanog" Sent: Friday, 8 February, 2019 20:00:45 Subject: VPS providers contacts Hey there I am looking to get in touch with VPS providers (like vultr.com etc.) which has all automated control panel to ask few questions regarding BGP implementation and overall automated control panel related stuff. I have been trying to get a hold of someone from virtkick.com which on paper sounded like exactly what i needed but unfortunately got no response from them. thanks in advance mehmet
Re: William was raided for running a Tor exit node. Please help if
On 12/03/2012 03:31 AM, Rich Kulawiec wrote: On Mon, Dec 03, 2012 at 08:49:24AM +, Warren Bailey wrote: Can you imagine an email thread that lasted longer than an entire weekend? Yes, I can. I've participated in some that went on for months. It's simply a matter of effectiveness and attention span. This email needs to be murdered, because it is completely out of control. I disagree, strongly, as this is an issue of unfortunate timely relevance to the community. +1 I strongly disagree as well. I am very interested to see how this case evolves in and out of court. Are Tor exit-node operators going to be given the same rights as ISP's who's networks are used for illegal purposes? I would hope so, but it doesn't seem like that has happened in this case, so I am very interested to hear how the situation pans out. It is extremely relevant to the Internet community and to free speech in general. Kind regards, Jordan Michaels Vivio Technologies
Re: Cloudflare, and the 120Gbps DDOS "that almost broke the Internet"
You won't care "who" until the target is you. ;) Warm Regards, Jordan Michaels On 03/27/2013 12:09 PM, Warren Bailey wrote: Seldom do hax0r nations target things without some type of "justification". I don't really care who is being internet murdered, I care why.
Re: Carrier-grade DDoS Attack mitigation appliance
I've heard good things about the A10 Networks appliances. I have not used them personally, but do use their ADC appliances and they do work well. Jordan Medlen Network Engineer Bisk Education Sent from my iPhone > On Dec 7, 2014, at 15:12, Mohamed Kamal wrote: > > > Have anyone tried any DDoS attack mitigation appliance rather than Arbor > PeakFlow TMS? I need it to be carrier-grade in terms of capacity and > redundancy, and as far as I know, Arbor is the only product in the market > which offers a "clean pipe" volume of traffic, so if the DDoS attack volume > is, for example, 1Tbps, they will grant you for example 50Gbps of clean > traffic. > > Anyway, I'm open to other suggestions, and open-source products that can do > the same purpose, we have network development team that can work on this. > > Thanks. > > -- > Mohamed Kamal > Core Network Sr. Engineer > >
HostGator contact
Looking for a HostGator contact, off-list
RE: Brocade MLX Feedback
These are great routers. I used the MLX16s in the same capacity, before the newer model MLXe with upgraded management card specs. Should work just fine for that. Thank you, Jordan Medlen Network Engineer Bisk Education, Inc. -Original Message- From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Graham Johnston Sent: Wednesday, January 14, 2015 2:10 PM To: 'nanog@nanog.org' Subject: Brocade MLX Feedback We are looking at Brocade MLX routers to act as Internet edge routers. They will initially handle two to four full tables, plus peering on an IX. The price is certainly attractive. We are coming from Cisco 7600 series devices. Can anyone comment about their use of them? Are you happy with them? Any gotchas? Particularly we are interested in convergence time to full FIB population. Thanks, Graham Johnston Network Planner Westman Communications Group 204.717.2829 johnst...@westmancom.com<mailto:johnst...@westmancom.com> P think green; don't print this email.
net neutrality peering dispute between CenturyTel/Qwest and Cogent in Dallas
I have several customers that are having packet loss issues, the packet loss appears to be associated with a Cogent router interface of 38.104.86.222. My upstream provider is telling me that the packet loss is being caused by a net neutrality peering dispute between CenturyTel/Quest and Cogent in Dallas. I did some quick googling to see if I could come up with any articles or something like that I could provide to my customers and did not see anything. Anyone know any details? Thanks Jordan Hamilton Senior Telecommunications Engineer Empire District Electric Co. 720 Schifferdecker PO Box 127 Joplin, MO 64802 Ph: 417-625-4223 Cell: 417-388-3351 -- Note: To protect against computer viruses, e-mail programs may prevent sending or receiving certain types of file attachments. Check your e-mail security settings to determine how attachments are handled. -- This e-mail and any files transmitted with it are the property of THE EMPIRE DISTRICT ELECTRIC COMPANY, are confidential, and are intended solely for the use of the individual or entity to whom this email is addressed. If you are not one of the named recipients or otherwise have reason to believe that you have received this message in error, please delete this message immediately from your computer and contact the sender by telephone at (417)-625-5100. Any other use, retention, dissemination, forwarding, printing or copying of this email is strictly prohibited.
RE: Ear protection
Being a musician in a band, as well as very frequent concert goer, I use those same ones. I like them the best for all around use. I have used many different kinds, and I prefer these. Thank you, Jordan Medlen Network Engineer Bisk Education, Inc. -Original Message- From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Harald Koch Sent: Wednesday, September 23, 2015 10:45 AM To: David Hubbard Cc: NANOG list Subject: Re: Ear protection I use Etymotic earplugs on my motorcycle as well as in other loud environments, because they attenuate "without loss of clarity": http://www.amazon.com/Etymotic-Research-ETY-Plugs-Protection-Earplugs/dp/B0044DEESS -- Harald
Brocade CES Routing Table Issue
I have been troubleshooting an issue with Brocade TAC in regards to our Brocade CES that we use for some static routing. The Firmware has been upgraded and hardware has been replaced and still the problem is occurring. I have talked to some other carriers I work with that have previously used Brocade gear and switched because of odd issues that could not be resolved. Curious if anyone on this list has had other odd Layer 3 issues with Brocade/Foundry Networks gear? My issue seems to be somehow related to the table in memory that the ARP and next-hop entries are stored in, entries will point to the wrong mac address or the wrong port for the next-hop, it happens about every 60 days like clockwork. Jordan Hamilton Telecommunications Engineer Empire District Electric Co. 720 Schifferdecker PO Box 127 Joplin, MO 64802 Ph: 417-625-4223 Cell: 417-388-3351 -- Note: To protect against computer viruses, e-mail programs may prevent sending or receiving certain types of file attachments. Check your e-mail security settings to determine how attachments are handled. -- This e-mail and any files transmitted with it are the property of THE EMPIRE DISTRICT ELECTRIC COMPANY, are confidential, and are intended solely for the use of the individual or entity to whom this email is addressed. If you are not one of the named recipients or otherwise have reason to believe that you have received this message in error, please delete this message immediately from your computer and contact the sender by telephone at (417)-625-5100. Any other use, retention, dissemination, forwarding, printing or copying of this email is strictly prohibited.
Re: Experience Brocade ICX7750 and other vendor SFP
I use the ICX 6610's which I believe run the same code train. I use other vendor optics to light 3 spans of dark fiber, one of which is 60km, so I have Axiom 80km optics in production there. I have had no issues. I also use the VDX series switches with other vendor optics and no issues. Jordan Medlen Network Engineer Bisk Education Sent from my iPhone > On Mar 31, 2015, at 05:55, Florian Figula wrote: > > Hi all, > > does anyone have experiences regarding Brocade ICX7750 and other vendors SFP. > > Information will be helpful for planing new infrastructure and costs. > > Thanks to all! > > > Greets, > > Florian >
RE: Recommended 10GE ISCSI SAN switch
I am using Brocade VDX 6740 switches that support dcbx. They work very well and have had no issues in nearly two years with them. Thank you, Jordan Medlen Network Engineer Bisk Education, Inc. -Original Message- From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Paul S. Sent: Tuesday, May 12, 2015 9:36 AM To: nanog@nanog.org Subject: Recommended 10GE ISCSI SAN switch Hi guys, We're shortly going to be getting some 10G SANs, and I was wondering what people were using as SAN switches for 10G SANs. It is my understanding that low buffer sizes make most 'normal' 10G ethernet switches unsuitable for the job. We're pretty much an exclusive Juniper shop, but are not biased in any way -- best tool for the job is what I've been tasked with to find. Keeping that in mind, how would something like a EX4550 fare in the role? Are there better devices in the same price range? Thanks!
Re: CNN broadcasting online free? Hogging my bandwidth...
On 08/14/2013 06:42 PM, Larry Sheldon wrote: Trying to get their "numbers" up off the floor? lol. That was my first thought as well. =P -Jordan
Re: Traceroute management
Best thing I've seen is from the network guys at NCAR/UCAR. And it has the right price too! http://www.cisl.ucar.edu/nets/tools/trcheck/ Dylan Ebner wrote: My company uses it's internet connection primarily for VPN tunneling. I have always wanted a tool that I can enter the peer ip addresses and it will every 8 or 12 hours run a traceroute and log it so I can build historical maps of the path our traffic is taking. Has anyone ever seen any apps like this, preferably something that is free. Thanks
