Re: maximum ipv4 bgp prefix length of /24 ?

On 9/29/23 03:34, Mark Tinka wrote: RAM is not the issue... it's FIB. If you pay me for FIB slots, I'm happy to install /32's to your heart's content . And convergence times to process all that extra noise... The line in the sand has been drawn; just say no to >/24 ... --

Re: maximum ipv4 bgp prefix length of /24 ?

Trolling NANOG on this subject? Let me get my popcorn... -- inoc.net!rblayzor XMPP: rblayzor.AT.inoc.net PGP: https://pgp.inoc.net/rblayzor/ On 9/28/23 17:25, VOLKAN SALİH wrote: hello, I believe, ISPs should also allow ipv4 prefixes with length between /25-/27 instead of limiting maximum

NY Verizon FIOS IPv6 routing issue

Any Verizon IP engineers lurking on this list that can contact me about a recurring and chronic IPv6 routing issue in the upstate NY Verizon FIOS network. Getting feedback from several customers that have valid IPv6 PD from FIOS but routing is broken 2-3 hops out in Verizons network. This is

VM hosting with full BGP feed

Looking for a VPS that can do a FreeBSD VM/Jail and can provide a full BGP route view. Anyone know of some place that would do this? Please contact me off list, thank yuou. -- inoc.net!rblayzor XMPP: rblayzor.AT.inoc.net PGP: https://pgp.inoc.net/rblayzor/

Re: FCC chairwoman: Fines alone aren't enough (Robocalls)

On 10/4/22 09:19, Mike Hammett wrote: Sorta like in the IP world, if everyone did BCP38/84, amplification attacks wouldn't exist. Not everyone does, so... Wouldn't exist? Maybe only in part, BCP38/84 does nothing for a majority of DDoS amp attacks. Most traffic is coming from legit/botted

Re: Aftermarket switches that were manufactured in any sort of quantity?

On 6/9/22 15:07, Saku Ytti wrote: They're not really particularly cheap, they are 'market rate', you can get 'market rate' from multiple suppliers, directly from manufacturers too. They are only cheaper than most EU+US resellers, that's about it. Are they "cheap" or is everyone else just

Cogent RPKI invalid filtering

According to Cloudflares isbgpsafeyet.com, Cogent has been considered "safe" and is filtering invalids. But I have found that to be untrue (mostly). It appears that some days they filter IPv4, sometimes not, and IPv6 invalids are always coming through. I know it's Cogent, but curious as to

Re: Submitting Fake Geolocation for blocks to Data Brokers and RIRs

On 4/22/2021 9:30 AM, Tom Beecher wrote: While I agree with the overall sentiment of your message, I am curious ; have there been any instances where an internet provider has been found liable (criminally or civilly) for willfully misrepresenting IP geolocation information? How could there

Re: OOB management options @ 60 Hudson & 1 Summer

On 4/15/21 6:14 PM, Matthew Crocker wrote: I’m in DR space @ 60 Hudson and the Markeley MMR @ 1 Summer I'm in both locations as well. We have a 10MB static IP connection for them and I think it's like $50/mo. Depends on how "out of band" you want it to be. I also think Markley @ 1 summer

Re: Zayo or HE for IP transit

On 4/19/21 5:30 PM, James Lumby wrote: What is the current experience with Zayo or HE?  I’m looking at possibly adding one of them into a mix of cogent and a mix from my datacenter. Would be using BGP full routes.  Any experiences would be appreciated. Well AFAIK Zayo is not filtering

Spectrum Routing Contact

I was wondering if someone from Spectrum engineering could hit me out of band. We have a customer in one of our data centers that is having some strange routing issues through Cogent and Spectrum AS's 7843 & 12271. Was wondering if someone could share some insight BGP looking glass type info

Re: Cogent Layer 2

On 10/14/20 1:56 PM, Shawn L via NANOG wrote: > When I last spoke to them, it sounded like they were using a bunch of > LAG groups based on ip address because they _really_ wanted to know how > many ip addresses we had and what kind of traffic we would be expecting > (eyeball networks, big data

Re: cloud automation BGP

Back in the day there was Cyclops... https://cyclops.netsec.colostate.edu/ Not sure it's still a thing, doesn't look like it's been updated in a while. On 9/27/2020 11:52 AM, Dmitry Sherman wrote: Hello guys, Can you recommend software or cloud based solution which monitors if a prefix is

Re: Centurylink having a bad morning?

On 8/30/20 8:14 AM, Drew Weaver via NANOG wrote: > Woke up this morning to a bunch of reports of issues with connectivity > had to shut down some Level3/CTL connections to get it to return to normal. Just to confirm we're seeing this on AS3356 and not AS209, correct? We have links to both and

Re: Cogent sales reps who actually respond

On 9/16/19 9:30 AM, Jon Sands wrote: > The last time I dealt with them, it took a little over 3 months to get > them to turn up basic BGP service. To top it off the sales rep was fired > in the middle of our deployment. Cogent seems to have higher rep > turnover than anything else I've dealt with.

Re: Partial vs Full tables

On 6/10/20 6:01 PM, Baldur Norddahl wrote: > Am I correct in assuming loose mode RPF only drops packets from > unannounced address space in the global routing table? And the downside > of doing so is that sometimes we do receive packets from that address > space, usually back scatter from

Re: Partial vs Full tables

On 6/4/20 11:00 PM, James Breeden wrote: > And before I get asked why not just run full tables, I'm looking at > regional approaches to being able to use smaller, less powerful routers > (or even layer3 switches) to run some areas of the network where we can > benefit from summarization and full

Re: CGNAT Solutions

On 4/29/20 10:29 AM, Mikael Abrahamsson wrote: > There are some numbers in there for instance talking about 1024 ports > per subscriber as a good number. In presentations I have seen over time, > people typically talk about 512-4096 as being a good number for the bulk > port allocation size. So

Re: CGNAT Solutions

On 4/28/20 11:01 PM, Brandon Martin wrote: > Depending on how many IPs you need to reclaim and what your target > IP:subscriber ratio is, you may be able to eliminate the need for a lot > of logging by assigning a range of TCP/UDP ports to a single inside IP > so that the TCP/UDP port number

Re: Disney+ Geolocation issues

On 11/13/19 9:49 AM, Matthew Huff wrote: > It’s not about optimization, it’s about the contract with the content > providers. The agreement is to restrict content by geographical regions > mainly for marketing purposes. They block VPN access to keep people from > bypassing those restrictions.

Re: Disney+ Geolocation issues

On 11/12/19 5:28 PM, Michael Crapse wrote: > Myself and a few other ISPs are having our eyeballs complain about > disney+ saying that they're on a VPN. Does anyone have any idea, or who > to contact regarding this issue? > This is most likely improper geolocation databases. Anyone have an idea >

Re: BGP prefix filter list

On 5/30/19 1:48 PM, William Herrin wrote: > 1. What happens to the packets when the /24 gets filtered from one > source (in favor of an aggregate) but not from the other?  > > 2. In exchange for this liability, did you gain any capacity in your router? It was my understanding that the argument

Re: BGP prefix filter list

On 5/30/19 12:54 PM, William Herrin wrote: > It's permissible to announce to your transits with a private AS which > they remove before passing the announcement to the wider Internet. As a > result, the announcement from each provider will have that provider's > origin AS when you see it even

Re: BGP prefix filter list

On 5/24/19 2:22 PM, William Herrin wrote: > Get it? I announce the /24 via both so that you can reach me when there > is a problem with one or the other. If you drop the /24, you break the > Internet when my connection to CenturyLink is inoperable. Good job! It would be dropped only if the

Re: BGP prefix filter list

On 5/15/19 2:52 PM, Mike Hammett wrote: > You can't do uRPF if you're not taking full routes. > > You also have a more limited set of information for analytics if you > don't have full routes. Or instead of uRPF (loose) on transit links, just take a BOGON feed? -- inoc.net!rblayzor XMPP:

NYC to Albany - Wavelength service

Anyone know of any carriers offering DWDM wavelength paths between NYC and Albany, NY? (Not OTU2 or OTU4). Looking for carrier to carry color (alien wave). Please contact me off list. Thanks -- inoc.net!rblayzor XMPP: rblayzor.AT.inoc.net PGP: https://inoc.net/~rblayzor/

Re: Cogent BCP-38

> On 29 August 2017 at 03:38, Robert Blayzor <rblayzor.b...@inoc.net> wrote: > >> Well not completely useless. BCP will still drop BOGONs at the edge before >> they leak into your network. > > Assuming you don't use them in your own infra. And cost of RPF is lot &

Re: Cogent BCP-38

> On Aug 17, 2017, at 9:11 AM, William Herrin wrote: > > Doesn't loose mode URPF allow packets from anything that exists in the > routing table regardless of source? Seems just about worthless. You're > allowing the site to spoof anything in the routing table which is NOT >

Re: BGP Route Reflector - Route Server, Router, etc

On Jan 12, 2017, at 5:59 PM, James Bensley wrote: > > The CSR1000v (IOS-XE),IOS-XRv and vMX are production ready. People are > deploying these in production and its increasing in popularity. +1 here on the CSR1000v, works very well. However, I’d have to give another +1 to

Re: Programmable SFP+ Transcievers

On Jan 18, 2016, at 2:02 PM, Colton Conor wrote: > > What options are out there for re-programmable SFP and SFP+ transceivers? > So far I have found both > https://www.flexoptix.net/en/flexbox-v3-transceiver-programmer.html and >

Re: Level3 routing issues

On Jul 28, 2015, at 8:54 PM, Matt Hoppes mhop...@indigowireless.com wrote: Is anyone seeing packet loss or routing issues on the Level3 network on the east coast right now? We’ve seen a slew of problems going west out of Level3 in NYC the last couple of nights. Last night was

Re: Anycast provider for SMTP?

On Jun 15, 2015, at 1:50 PM, Joe Hamelin j...@nethead.com wrote: I have a mail system where there are two MX hosts, one in the US and one in Europe. Both have a DNS MX record metric of 10 so a bastardized round-robin takes place. This does not work so well when one site goes down. My

Re: Recommended 1Gb SFP for ~115km?

in the switch/router. I've had good luck with the 40 80km ones in the past. -- Robert Blayzor INOC, LLC rblay...@inoc.net http://www.inoc.net/~rblayzor/

Re: IPv6 transits (Was: Cogent input)

. -- Robert Blayzor, BOFH INOC, LLC rblay...@inoc.net http://www.inoc.net/~rblayzor/

Why word on fiber outages in NY?

before anyone is allowed in to work on the fiber. I've been trying to search news and information, but nothing. I've heard this is huge outage for Level3 in the New York/Northeast area. Anyone have anything to share? -- Robert Blayzor, BOFH INOC, LLC [EMAIL PROTECTED] http://www.inoc.net

NYC - 60 Hudson Problems?

have LoS. Anyone know whats up? We have tickets in with Level3 another the other dark fiber provider, but it's been pretty quiet.. -- Robert Blayzor, BOFH INOC, LLC [EMAIL PROTECTED] http://www.inoc.net/~rblayzor/

Re: [NANOG] Fiber Cut at 60 Hudson

BGP peer shutdown until things completely cleared up. Unfortunately for us I think there is a lot of legacy pre-Level3 network between us in Albany and 60 Hudson/111 8th in NYC... a lot of stuff that probably isn't well documented or maintained. (thus, the 40+ hour outage) -- Robert Blayzor

Re: peter lothberg's mother slashdotted

Jeff Kell wrote: If we continue along orders of magnitude, sure it's foreseeable. * 30 years ago, 300 baud was the bomb :-) * 3000 baud was roughly 2400bps days * 3 baud gets us to ~28.8k *30 baud was about 2 ISDN lines (2x128k) * 300

Re: peter lothberg's mother slashdotted

micky coughes wrote: I can see that *everybody* is missing the point on Peter's exercise. Clearly this is to show to the telcos of the world that you can upgrade to a native IP infrastructure and absorb the existing transport into the router with a minimal effort. There was a post here from