Re: Verizon/Qwest single end-user difficulty vs Xfinity (was Re: NANOG Digest, Vol 182, Issue 14)

[Tom Daly]

Jeff,

Since you are using bridge mode, try adjusting down the MTU supported
through the network. We have observed that a realistic MTU for Verizon 5G
home internet is about 1428 bytes.

Good luck,

Tom




On Sun, Mar 19, 2023 at 8:00 AM  wrote:

> Send NANOG mailing list submissions to
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>
> Today's Topics:
>
>1. Spamhaus flags any IP announced by our ASN as a criminal
>   network (Brandon Zhi)
>2. Verizon/Qwest single end-user difficulty vs Xfinity (Jeff Woolsey)
>3. Re: Spamhaus flags any IP announced by our ASN as a criminal
>   network (Tom Beecher)
>4. Re: Verizon/Qwest single end-user difficulty vs Xfinity
>   (Darin Steffl)
>5. Re: Verizon/Qwest single end-user difficulty vs Xfinity (Joe)
>
>
> --
>
> Message: 1
> Date: Sat, 18 Mar 2023 14:57:12 +0100
> From: Brandon Zhi 
> To: nanog@nanog.org
> Subject: Spamhaus flags any IP announced by our ASN as a criminal
> network
> Message-ID:
> <
> caayzddeau48oynga6xgwrsijbvf9liwlhve5ono3y+8faus...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hello guy,
>
> We recently discovered that any IP address announced by our ASN is
> blacklisted by Spamhaus, even if we only announced it but not use it.
>
> I would like to ask if this is manually set by Spamhaus or is the system
> misjudgment? Has anyone encountered the same situation as us?
>
>
> Best,
>
> *Brandon Zhi*
> HUIZE LTD
>
> www.huize.asia  | www.ixp.su | Twitter
>
>
> This e-mail and any attachments or any reproduction of this e-mail in
> whatever manner are confidential and for the use of the addressee(s) only.
> HUIZE LTD can?t take any liability and guarantee of the text of the email
> message and virus.
> -- next part --
> An HTML attachment was scrubbed...
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> http://mailman.nanog.org/pipermail/nanog/attachments/20230318/3e9aa32f/attachment-0001.html
> >
>
> --
>
> Message: 2
> Date: Fri, 17 Mar 2023 18:32:53 -0700
> From: Jeff Woolsey 
> To: nanog@nanog.org
> Subject: Verizon/Qwest single end-user difficulty vs Xfinity
> Message-ID: <8c539894-c5ee-e01c-08a1-5a72c0037...@jlw.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Verizon 5G Internet Support is not at a high-enough pay grade to assess
> this problem...? So I'm turning to y'all.
>
> I'm trying to save $$$ and increase speed, using Verizon 5G Home
> Internet to replace XFinity, even though they gave me a faster modem a
> few weeks ago.? I run both of the modems in Bridge/Passthrough mode.
>
> A friend of mine is nice enough to offer some offsite backup space, and
> I use rsync over ssh to get there.? He's 1500 miles away.? He uses a
> non-standard ssh port (keeps the doorknob twisters away).?? This sort of
> thing has been working without difficulty over Xfinity (my end) for
> years.? He also changed his connection almost a month ago now, to Qwest,
> I believe.
>
> I try the same thing over Verizon [1] and ssh always times out, no
> response.? We are also NTP peers, and that doesn't work well over
> Verizon either. ICMP traceroutes and pings succeed.? UDP traceroutes do
> not get any further than 207.109.3.78 (last hop before destination) .?
> Not every traceroute offers TCP, but MacOS does, and nothing responds to
> any of that, even at the usual ssh port.? UDP traceroutes to either port
> behave like an ordinary one, which it is.
>
> Since I can get there via xfinity, I can traceroute, ping, but not ssh
> back through Verizon.
>
> I also set up an incoming (xfinity) port from the same non-standard ssh
> port forwarding to regular ssh on a different system on my LAN, and when
> I ssh -p ? that from Verizon (even cellphone data),? I get that
> other system, and that works fine.? The 207... router is not in that path.
>
> I can also ping the Verizon connection from Xfinity (and vice versa).
>
> Go figure.
>
> [1] This same difficulty occurs in Verizon's Looking Glass, from several
> different places, and other Looking Glasses (e.g. Cogent, Equinix).? It
> also occurs on my Verizon phone data connection (not WiFi).? If he were
> serving more stuff out of his home, this would be a bigger problem.
>
>
> --
> Jeff Woolsey {woolsey,jlw}@{jlw,jxh}.com first.last@{gmail,jlw}.com
> Spum bad keming.
> Nature abhors a straight antenna, a clean lens, and empty storage.
> "Delete! Delete! OK!" -Dr. Bronner on disk space management
> "Card sorting, Joel." -me, re Solitaire
>
>
>
> ---

Assistance with Microsoft O365 Email Deliverability?

[Tom Daly]

Hi NANOG'ers,

Reaching out for help - having troubles with email delivery into O365
inboxes. Have done the requisite PTRs, SPF+DKIM work, domain reputation,
RBL checks, etc.

For some reason, this one is vexxing me. Anyone from Microsoft on the list
that could lend a helping hand?

Thanks,
Tom

--
Tom Daly
t...@q7.io

Re: TLD .so Partial Outage?

[Tom Daly]

Hi Bill,

Improved for sure. Thanks for the outreach.

Looks to me like there may still be some lingering issues: 
https://p.catchpoint.com/ui/Entry/PC/V/ASNc-D-D-BHL40FjZF_2McMAA. I've asked 
the AfriNIC folks to continue to have a look.

Thanks,
Tom

--
Tom Daly
t...@q7.io 

On Sun, May 16, 2021, at 11:24 AM, Bill Woodcock wrote:
> 
> 
> > On May 15, 2021, at 9:05 PM, Tom Daly  wrote:
> > 
> > Hello NANOG'ers!
> > 
> > I'm observing a near global outage of DNS services from d.nic.so. This 
> > appears to be an AfriNIC anycast DNS service.
> > 
> > Does anyone have contacts at AfriNIC for their DNS systems available?
> > 
> > e.nic.so seems to be responding (hosted behind PCH, thanks Woody!).
> 
> Our staff contacted AfriNIC staff and got an acknowledgement that they 
> were in process of resolving it at the time.
> 
> -Bill
> 
> 
> Attachments:
> * signature.asc

TLD .so Partial Outage?

[Tom Daly]

Hello NANOG'ers!

I'm observing a near global outage of DNS services from d.nic.so. This appears 
to be an AfriNIC anycast DNS service. 

Does anyone have contacts at AfriNIC for their DNS systems available?

e.nic.so seems to be responding (hosted behind PCH, thanks Woody!).

Tom

--
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t...@q7.io

NANOG 55: Submit your Lightning Talks!

[Tom Daly]

Hello NANOG 55'ers,
Welcome to Vancouver. On behalf of the NANOG Program Committee, I'm pleased to 
announce that we're accepting Lightning Talk submissions via our tool at 
https://pc.nanog.org/. Log in, submit a talk, and wait. We'll be announcing the 
first round of LTs late this evening.

How does it work?
- You come up with an idea for a 10 minute talk. You submit an abstract to the 
tool at https://pc.nanog.org.
- The Program Committee reviews the talks in the tool, and each PC member rates 
their top 3 choices.
- Around 10pm Sunday and Tuesday evenings, we'll select the top 3 rated talks 
in the tool, and include them in the following day's Lightning Talk session.
- If you are selected to present a Lightning Talk, you'll be notified by email 
on how to submit your slides to the NANOG PC.

No idea is too ridiculous for a talk! No topic is too crazy! Submit your talk 
now and enjoy the rush of a being a real, live, NANOG presenter! 

For the NANOG PC,
Tom Daly

-- 
Tom Daly
@tomdyninc | t...@dyn.com | http://dyn.com
Dyn | 150 Dow Street | Manchester, NH 03101, USA

Re: Force10 E Series at the edge?

[Tom Daly]

Brent,
Your options include, for smaller boxes:

- Brocade CER series, but make sure you the -RT versions due to RAM (haven't 
tried, though)
- Juniper MX (MX80 is working well for us)
- Cisco ASR1006 (heard a lot about BGP price issues)

But for 300mb/sec, what not OpenBSD + Quagga?

Tom



- Original Message -
> I was very happy with the E300 as a data center core switch handling
> multiple full feeds (around 15) with about 10x the traffic you are
> talking about.  The only problem I had was that Force10 didn't have
> a useful (basically forklift) upgrade to get more IPv4 prefixes, and
> the more I talked to them and the more I showed them the graphs
> demonstrating what we'd need for prefix space assuming even the most
> conservative assumptions at depletion, the more I realized they
> really Did Not Get It.  In fact, their brand new architecture
> recently announced had only 500k prefixes allowed, at a time that
> the Juniper MX platform handled 2million easily.
> 
> So I would be fine using Force10 again, given the following changes:
>   1. Large limits on IP prefixes allowed
>   2. Reallocation of useless memory from stupid things like MAC tables
>   to prefixes (data centers have very few MACs, very many prefixes)
>   3. Command line logging
> 
> The units worked great at failover, never had any problems gracefully
> failing over from one RP to another, but if you have to cold boot
> them for any reason it takes like 5 minutes :(
> 
> On Mar 27, 2012, at 2:21 PM, Roberts, Brent wrote:
> > Is anyone running an E300 Series Chassis at the internet edge with
> > multiple Full BGP feeds? 95th percent would be about 300 meg of
> > traffic. BGP session count would be between 2 and 4 Peers.
> > 6k internal Prefix count as it stands right now. Alternative are
> > welcome. Thought about the ASR1006 but I need some local switching
> > as well.
> > 
> > Full requirements include
> > Full internet Peering over GigE Links.
> > Fully Redundant Power
> > Redundant "Supervisor/Route Processor"
> > Would prefer a Small Chassis unit. (under 10u)
> > Would also prefer a single unit as opposed to a two smaller units.
> > 
> > 
> > 
> > 
> > This email and any attached files may contain confidential and/or
> > privileged material and is intended solely for the use of the
> > person to whom it is addressed. Any review, retransmission,
> > dissemination or other use of or taking of any action in reliance
> > upon this information by persons or entities other than the
> > intended recipient is prohibited. If you received this in error,
> > please contact the sender immediately and delete it and all
> > attachments from your computer. Progressive Solutions is not
> > liable for any errors or omissions in the content or transmission
> > of this email.
> 
> --
> Jo Rhett
> Net Consonance : consonant endings by net philanthropy, open source
> and other randomness
> 
> 

Re: slides

[Tom Daly]

Randy,
Posting delay. Fixed.

Tom

- Original Message -
> From: "Randy Bush" 
> To: "North American Network Operators' Group" 
> Sent: Monday, October 10, 2011 10:51:13 AM
> Subject: slides
> 
> i can not seem to see slides for this morning on
> http://www.nanog.org/meetings/nanog53/agenda.html
> 
> what am i doing wrongly?
> 
> randy
> 
> 

OT: Jay Adelson Keynote Video?

[Tom Daly]

Folks,

At NANOG 43, Jay Adelson had a video clip in his presentation which celebrated 
the hilarity that customers create for network engineers. Does anyone have a 
link to the video? A review of the abstract 
(http://nanog.org/meetings/nanog43/abstracts.php?pt=NDMmbmFub2c0Mw==&nm=nanog43)
 and google'ing high and low yielding no results. I seem to recall it being on 
BitGravity, but I don't have the URL.

Tom

-- 
Tom Daly, CTO, Dynamic Network Services, Inc.
### We're hiring software engineers, network engineers, and web developers. 
Learn more at http://dyn.com/why-dyn/careers. ###

[NANOG-announce] NANOG 52 CFP Reminder: Slides due 4/11

[Tom Daly]

NANOG'ers,
On Thursday, 4/14, the NANOG Program Committee will meet to review submissions 
for NANOG 52. In an effort to get a topic list our the community as early as 
requested (tentative for 4/15), we do need to have all abstracts and slide 
submissions in as soon as possible. A quick review of the PC tool indicates 
that we don't have enough content for the meeting yet, so please submit your 
work ASAP!

You can submit your abstract, or upload your slides at https://pc.nanog.org.

Have a good weekend,

Tom Daly, for the NANOG PC


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Re: Lightning Debates at NANOG 51

[Tom Daly]

Greg,

> i suspect you are correct,  not sure who would elect for the slower
> standard,  considering they hit the streets fairly close to each other
> and I can't see there being a huge difference in cost, but i could be
> wrong. (the isp i'm connected to is running100G now)

Regarding 40G/100G, I'm sure some in the NANOG community have some feeling 
towards 40G as it was intended to be a server platform standard. With 
architectures such as 1aq, TRILL, VL2, etc, there may be some grounds here. 
What's the good of 100G if you can't push the PPS, for example. Just a 
thought...

> i've more 10G ports than you can shake a stick at actually…  my '?'
> was again,  people debate this?  as the bit rates are verbatum,  the
> major difference which one would choose the other over from my
> understanding was distance to endpoint..  but again i could be wrong… 
> wishing now i didn't send anything.  8)

Nah, send away. What debate were you volunteering to take a position on again? 
:)

Tom

Re: Lightning Debates at NANOG 51

[Tom Daly]

> In most cases it isn't an option, you use what the hardware uses.  I
> can't decide to use an SFP+ in a unit with XFP form factor.  I select
> the hardware according to the features I need and then buy the optics
> it requires, I don't select the hardware based on the optics modules
> it uses.  The only drawback I have seen so far is finding ER optics in
> SFP+ form factor but they might be available now (I couldn't find them
> a year or so ago).

George,
Good point. Perhaps the context should be more nebulous? Given a choice in an 
ideal word, not limited by the selection of hardware manufactures, which do you 
prefer? ras did a good talk on optics in the past, I'm sure there's some points 
to discuss.

> A good topic might be ipv6 migration strategies:  dual stack or native
> v6 with nat64/dns64

Alright, added. Are you volunteering to speak to one point or the other?

Thanks,
Tom

Re: Lightning Debates at NANOG 51

[Tom Daly]

Greg,

> forgive me,  but what is the difference between raised floor and
> underfloor?

Excuse me. Raised floor vs. overhead.

> > Ethernet: 40GE vs. 100GE
> 
> people are debating which is better?   really?

I'm sure someone has an opinion...

> > Optics: XFP vs. SFP+
> 
> ?
> 
> some interesting choices of things to debate..  are these serious
> debate sessions or more for fun?

They are meant to be informative. Maybe you have no idea on what XFP or SFP+ is 
because you've been running a Gigabit based network and haven't made the jump 
to 10GE yet - the debate might give you the top 3-5 points on why each might be 
the right option for you. And then, of course, there is a fun factor.

Tom

Lightning Debates at NANOG 51

[Tom Daly]

Folks,
I've been tempted by the NANOG PC into trying to run some "Lightning Debates" 
at NANOG 51 in Miami. The idea, similar to lighting talks, is a 30 minute 
session, covering 3 debate topics, 10 minutes each. Each person would get 5 
minutes to argue their side of the issue.

Some ideas so far:

UPS Systems: Battery vs. Flywheel

Cooling: Raised floor vs. Underfloor

Power: AC vs. DC

Ethernet: 40GE vs. 100GE

Optics: XFP vs. SFP+

Address Families: IPv4 vs. IPv6

I'm soliciting panelists, and ideas. Please let me know if you're interested in 
participating in what will hopefully be a unique and exciting session.

Best,
Tom

-- 
Tom Daly
http://dyn.com/

[NANOG-announce] Update: NANOG 49 CFP

[Tom Daly]

Hello Fellow NANOG'ers,

TLDR: The PC is still looking for great content for NANOG 49. Go upload 
abstracts and tutorials at https://pc.nanog.org.

Just a quick note on behalf of the NANOG Program Committee that our next PC 
call will be next Tuesday, May 11th. Shortly after this meeting, we hope to 
post a draft agenda for NANOG 49, but we need your help - we still need a bit 
more content! For those of you that have submitted abstracts, now is a great 
time to upload your slides into the PC tool at https://pc.nanog.org, and for 
those who might want to give a talk to upload their abstracts and slides into 
the tool, again at https://pc.nanog.org.

And while you're at it, take the time to go register for the conference at 
https://nanog.merit.edu/registration/, the Early Bird rate is still open.

Thanks, and looking forward to seeing you all in San Francisco!

Tom Daly, for the NANOG PC.

-- 
Tom Daly
CTO, Dynamic Network Services, Inc.
http://dyn.com/



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[NANOG-announce] REMINDER: CFP for NANOG 48

[Tom Daly]

Hello Fellow NANOG'ers,

As you all should know by now, NANOG 48 is coming up in February. The NANOG 
Program Committee has been busily recruiting, collecting, and reviewing 
submissions for the program, however, we still need more content. We have lined 
up many interesting Tracks and Panels, but need more General Session 
submissions - to learn more about what you're up to in your networks and what 
is important to you!

The NANOG 48 Call for Presentations is still available at 
http://www.nanog.org/meetings/nanog48/index.php. The PC will be having a call 
next Tuesday to review submissions, and would like to have more material to 
review.

So what that means:
 - YOU: Go think of something you think is important to the NANOG Community
 - YOU: Write up some slides (PDF format prefered)
 - YOU: Submit them to the PC tool (https://pc.nanog.org)
 - WE, THE PC: Tell you how awesome your presentation looks
 - YOU: Present at NANOG 48 and take all the credit for your awesome talk!

Yes, it really is that simple. Do it now!

Shamelessly, for the NANOG PC,

Tom Daly

-- 
Tom Daly
CTO, Dynamic Network Services, Inc.
http://dyn.com/


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Re: Webcasts of NANOG47

[Tom Daly]

Hi Folks,
Here's the skinny:

Sunday tutorials were not live broadcast, but were recorded, and will be 
encoded and placed online shortly after the meeting.

The General Session from Monday and Tuesday was/will be broadcasted live.

Also, Dani Rosiman's talk on Tuesday on the BGP Metric System will be 
broadcasted.

The ISP Security Track and Peering Track are not broadcast live, no recorded.

Regards,
Tom Daly



- "Warren Bailey"  wrote:

> Or just fly out ;) lol
> 
> 
> 
> - Original Message -
> From: Leigh Porter 
> To: Justin Shore ; NANOG 
> Sent: Mon Oct 19 14:06:17 2009
> Subject: RE: Webcasts of NANOG47
> 
> 
> Hey,
> 
> I don't know for sure but I think only the Grand Room is televised.
> 
> Get somebody there with a webcam to do ustream.tv or livestream.com or
> whatever ;-)
> 
> --
> Leigh
> 
> 
> -Original Message-
> From: Justin Shore [mailto:jus...@justinshore.com]
> Sent: Mon 10/19/2009 9:06 PM
> To: NANOG
> Subject: Webcasts of NANOG47
>  
> Does anyone know if there will be video streams of the events from
> rooms 
> other than what's in the Grand room?  For example I would like to see
> 
> the ISP Security Track BOF or the one tomorrow on Peering.  I don't
> see 
> a way to select those specific feeds though.
> 
> Thanks
>   Justin

[NANOG-announce] Reminder - NANOG 47 is coming quickly!

[Tom Daly]

Hello Everyone,
NANOG 47 is only 7 weeks away! The PC has been busily reviewing talks in 
preparation for the meeting. If you're interested in submitting a talk, please 
see:   

- http://nanog.org/meetings/nanog47/callforpresent.php.

Also, registration is open and the hotel is ready for booking, please see:

- https://nanog.merit.edu/registration.  
- http://nanog.org/meetings/nanog47/hotel.php

Finally, NANOG is always looking for great sponsors, and we always have room 
for more:

- http://nanog.org/sponsors

Looking forward to seeing everyone in Dearborn.

Thanks,
Tom Daly (for the PC)

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NANOG 45: Register Now, Hotel Link Available

[Tom Daly]

Folks,
NANOG 45 in the Dominican Republic is fast approaching, so now is the time to 
go get registered for the conference.

You can register for NANOG 45 at:

 https://nanog.merit.edu/registration/

I'm also pleased to report that our hotel has provided us with with a direct 
link for online reservations. You can make your reservations online at:

 http://cwp.marriott.com/sdqgw/nanog/

Be aware: the hotel is offering very nice rooms at a great rate (part of what 
should make your travel justification easier), so be sure to register soon.

Also, consider booking travel soon.  A number of airlines have substantially 
discounted flights at the moment, but one never knows when they might expire.

Looking forward to seeing you all in SDQ,

Tom Daly,
for the NANOG Program Committee

-- 
Tom Daly
[EMAIL PROTECTED]
Dynamic Network Services, Inc.
http://dynamicnetworkservices.com/

Paging Level(3) Security Operations

[Tom Daly]

Hello NANOG list,
I'm trying to reach out to Level(3) Security Operations for assistance with a 
Denial of Service attack.

So far, the normal means to contact Level(3) have failed.

I can be reached directly at 603-296-1598.

Thanks,
Tom Daly

-- 
Tom Daly
[EMAIL PROTECTED]
Dynamic Network Services, Inc.
http://dynamicnetworkservices.com/

Comcast.net E-mail Admin

[Tom Daly]

Hello,

Can a comcast.net e-mail admin please contact me off-list?

Thanks,
Tom Daly

--
Tom Daly
[EMAIL PROTECTED]
Dynamic Network Services, Inc.
http://www.dyndns.com/