Re: paleolithic inquiry

2014-07-11 Thread Sean Lazar
I think we should paint the garden shed blue...

> On Jul 11, 2014, at 7:37 PM, Randy Bush  wrote:
> 
> of course i received one "don't do that, you should not be painting a
> bikeshed at all, but building a doghouse."  i figure that only one is
> not a bad noise level.


Re: gmail offline?

2012-12-10 Thread Sean Lazar
It seems like gmail web interface is working for some, but not others.

http://www.google.com/appsstatus

On 12/10/12 9:19 AM, Jay Farrell wrote:
> It's been up and down for at least the past 20 minutes. Amusingly some of
> the isitdown sites are sporadic as a result of so many people checking to
> see if gmail is down. I'm reading/sending this via the gmail web interface
> now though.
>
>
> On Mon, Dec 10, 2012 at 12:06 PM, Andrew Latham  wrote:
>
>> On Mon, Dec 10, 2012 at 12:00 PM, Peter Kristolaitis 
>> wrote:
>>> I'm getting the same thing when I try to access the web interface, but
>> SMTP
>>> & IMAP seem to be working fine at the moment.
>>>
>>> - Peter
>> This email sent via the Web interface...  Trying to track down the issue
>> now.
>>
>> --
>> ~ Andrew "lathama" Latham lath...@gmail.com http://lathama.net ~
>>
>>
>




Re: Join my network on LinkedIn

2013-01-02 Thread Sean Lazar
I sent an unsubscribe request. Why Linkedin makes this so difficult, is
beyond me. They should just put an unsubscribe link in the email like
everyone else does.

On 1/2/13 5:25 AM, JP Viljoen wrote:
> On 02 Jan 2013, at 3:20 PM, Luis Palma Lopez via LinkedIn 
>  wrote:
> 
>> This email was intended for ***Ted Fischer***
> 
>
> A whole new year and things are still the same…
>
> -J
>
>
>
>




Re: Ok: this is a targetted attack

2013-02-11 Thread Sean Lazar
Jay, you need to have SPF records for your domain. This will prevent the
spoofing you are seeing.

http://en.wikipedia.org/wiki/Sender_Policy_Framework

$ dig @8.8.8.8 baylink.com TXT

; <<>> DiG 9.8.3-P1 <<>> @8.8.8.8 baylink.com TXT
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11443
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;baylink.com.INTXT

;; AUTHORITY SECTION:
baylink.com.194INSOAlocalhost. jra.baylink.com.
2011032901 28800 14400 86400 600

;; Query time: 39 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Mon Feb 11 13:36:33 2013
;; MSG SIZE  rcvd: 78

Sean

On 2/11/13 8:19 AM, Jay Ashworth wrote:
> Clearly, someone has decided to shoot at me specifically, since this
> latest spam supposedly from me:
>
> =
> Received: from lpb01.clearspring.com ([206.165.250.240]
>  helo=lpb01-a.clearspring.local)
>  by sc1.nanog.org with esmtp (Exim 4.80 (FreeBSD))
>  (envelope-from ) id 1U4vc3-000Cq4-9q
>  for nanog@nanog.org; Mon, 11 Feb 2013 15:48:11 +
> Received: from lpb01.clearspring.local (localhost [127.0.0.1])
>  by lpb01-a.clearspring.local (8.14.4/8.14.4) with ESMTP id r1BFm5bG022255
>  for ; Mon, 11 Feb 2013 10:48:05 -0500
> Date: Mon, 11 Feb 2013 10:48:05 -0500
> From: j...@baylink.com
> To: nanog@nanog.org
> Message-ID: 
> <57414784.191289.1360597685530.JavaMail.brainiac@lpb01.clearspring.local>
> =
>
> is also about FTTH.
>
> FOR THE RECORD: I don't ever use "send this link to someone", and especially
> not to a mailing list; this isn't even my tenth rodeo.
>
> Cheers,
> -- jr 'DoS attack?  What's that?' a




Re: home network monitoring and shaping

2013-02-13 Thread Sean Lazar
I've had good luck with a via mini ITX board and http://ipcop.org/

This was in 2005 so things may have changed/progressed.

It wasn't hard to give out some static dhcp leases and look at graphs
and see who the bandwidth piggies were, and then set some throttling.
Housemates weren't kicking down any money for the DSL line and running
p2p sharing apps... Not good for latency sensitive gaming!

Sean

On 2/13/13 9:40 AM, Michael Thomas wrote:
> On 02/12/2013 04:46 PM, Joel Maslak wrote:
>> Large buffers have broken the average home internet.  I can't tell
>> you how
>> many people are astonished when I say "one of your family members
>> downloading a huge Microsoft ISO image (via TCP or other
>> congestion-aware
>> algorithm) shouldn't even be noticed by another family member doing web
>> browsing.  If it is noticed, the network is broke.  Even if it's at
>> the end
>> of a slow DSL line."
>
> This is true only to a point: if you have 5 people streaming movies
> on a 2 people broadband you're going to have problems regardless of
> the queuing discipline. That said, it's pretty awful that in this day and
> age that router vendors can't be bothered to set the default linux kernel
> queuing  parameters to something reasonable.
>
> In any case, my point was really about wanting to deal with what happens
> when your isp bandwidth is saturated and being able to track it down
> and/or
> kill off the offenders. I haven't bought a router in the last year or
> two as
> "apps" have become de rigueur, but it sure seems like it would be nice to
> be able to do that. I'm pretty sure that I still can't (= being a dumb
> consumer,
> not a net geek jockey), but would like to hear otherwise.
>
> Mike
>
>




Re: Cat-5 cables near 200 Paul, SF

2013-05-31 Thread Sean Lazar
+1 Central computer on Howard.

On 5/31/13 11:23 AM, John Adams wrote:
> Central computer. It's next to Moscone west. It's great. No need to go to
> the south bay.
>
> -j
>
>
> On Fri, May 31, 2013 at 11:16 AM, Warren Bailey <
> wbai...@satelliteintelligencegroup.com> wrote:
>
>> We talked about this the other day. I think the consensus was.. In San
>> Fran, you're best off to head over to Fry's. I'm foggy, but I believe the
>> word was Fry's in lieu of Microcenter etc. I think we also heard some
>> people reply back with Graybar.
>>
>> On 5/31/13 4:15 AM, "Tuc"  wrote:
>>
>>> Hi,
>>>
>>> Hate to be "that guy" but really need help. Anyone know a place near 200
>>> Paul in SF with a major quantity of cat-5 cables? Like 30 8ft blue, 20 8ft
>>> grey, 30 5ft blue. Need them today due to ex-employee's poor inventory
>>> keeping.
>>>
>>> Thanks, Tuc
>>
>>
>




Re: Big Temporary Networks

2012-09-13 Thread Sean Lazar
WLAN in large conferences certainly is a challenge. You basically want
to get as many people on 5GHz as possible due to more available
channels. 2.4GHz becomes quite noisy. Also, configuring your access
points for high density helps. This means disabling the lowest data
rates. You also don't want to run full Tx power. Basically this will
ensure high data rates and quicker handoff to a nearer AP when roaming.
You don't want a client that is far away from an AP connecting to it at
a 1 Megabit data rate tying up the radio. This also is key in high
density seating open floorplan office situations.

Sean Lazar

On 9/13/12 8:44 AM, Jay Ashworth wrote:
> - Original Message -
>> From: "George Herbert" 
>> I know someone who did Interop's networking for a number of years and
>> does it for various non-Worldcon conventions. His short summary was to
>> stage and label and debug and test extensively beforehand, even if the
>> reassembly might introduce more bugs in the field.
> Excellent advice.
>
> But how do you load a wireless network and an uplink with 12-14k attachments 
> for testing purposes?  I can see how to test the uplink, but testing the WLAN
> seems ... well, next to impossible, to me, which is why I'm querying the list.
>
> :-)
>
> Cheers,
> -- jra




Re: Cisco 7206 IOS for PPPoE Termination

2012-09-23 Thread Sean Lazar
http://lmgtfy.com/?q=site%3Acisco.com+ios+broadband+aggregation+guide

On 9/23/12 1:50 PM, Shahab Vahabzadeh wrote:
> why joking Mark?
>
> On Mon, Sep 24, 2012 at 12:19 AM, Mark Gauvin  wrote:
>
>> You are joking I hope
>>
>> Sent from my iPhone
>>
>> On 2012-09-23, at 3:38 PM, "Shahab Vahabzadeh" 
>> wrote:
>>
>>> Dear Paul,
>>> Thanks for you reply, May I have those optimization knobs for
>>> virtual-template and throttles?
>>> Maybe looking into your configurations help me in this field.
>>> I will look for the service  provider image too.
>>> Thanks
>>>
>>> On Sun, Sep 23, 2012 at 11:17 PM, PC  wrote:
>>>
 For this application, you may wish to consider the service provider
>> images.
 The latest 15.x(S) image works, as it is the derivative of what was
 formerly the service-provider oriented 12.2(SRx) images.

 However, it's unlikely to drop steady state CPU, but it may contain some
 optimizations for concurrent PPP (re)negotiations on the G2 platform
>> during
 session recovery.

 PPPoE will generally handle more users on ethernet as it is easier to
>> push
 packets on when not dealing with the ATM encapsulations, but to what
>> extent
 this holds true on the 7200, I can't tell you for sure.

 I'd also read the broadband aggregation guide under the IOS
>> documentation
 on cisco.com, and tune all the knobs that may help you, there are some
 pointers on what items on virtual-templates are punitive in performance,
 other optional items such as disabling SNMP counters on virtual access
 interfaces to reduce cpu usage, and other items that may help little by
 little.  There are also various knobs to throttle PPPoE renegotiation
>> rates
 during recovery.

 I wish you luck (and consider getting another and/or bigger router to
 split the load).

 On Sun, Sep 23, 2012 at 1:23 PM, Shahab Vahabzadeh <
 sh.vahabza...@gmail.com> wrote:

> Which software you used before for them?
>
> On Sun, Sep 23, 2012 at 10:43 PM, Rinse Kloek <
>> rinse.kl...@isp.solcon.nl
>> wrote:
>> 6000 PPP users on a NPE-G2 is way too much imho. Currently we do no
>> more
>> than 3000 users on a NPE-G2 with PPPoA. (Max cpu 50%).
>> 5 years ago, we did about 5000 users on a NPE-G2, but as traffic
>> ratio's
>> grow each year the maximum users a NPE-G2 can handle will drop each
> year.
>> Don't forget an NPE-G2 is a software based plaform, so traffic
> forwarding
>> is done in software CPU.
>>
>> regards,
>> Rinse Kloek
>> Op 23-9-2012 20:51, Shahab Vahabzadeh schreef:
>>
>>> Hello everybody,
>>> I am using C7206 VXR NPE-G2 routers as BRAS in my network and the
> current
>>> IOS is *c7200p-adventerprisek9-mz.**124-24.T.bin* on them.
>>> Also their memory upgraded to 2GB instead of 1GB.
>>> And I have near 6500 online user on each of my BRAS and there is no
>>> speciefic feature except aaa with radius and ordinary features.
>>> There router is also terminating dot1q too because my PSTN centers
> traffic
>>> comes through dot1q vlans to BRAS es.
>>> I think I have some problem with current IOS, My CPU Usage is
>> abnormal
> and
>>> Its near %70 or %80.
>>> And when I have a network problem and some of PSTN centers goes down
> CPU
>>> go
>>> to %99 and it gets problem to recovery.
>>> Do you know any good IOS for me as a service provider to use?
>>> I heard that some service providers have near 8000 online user on
>> 7206.
>>> Thanks
>>>
>>>
>
> --
> Regards,
> Shahab Vahabzadeh, Network Engineer and System Administrator
>
> Cell Phone: +1 (415) 871 0742
> PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81  C2EE 76A2 46C2 5367
>> BF90

>>>
>>> --
>>> Regards,
>>> Shahab Vahabzadeh, Network Engineer and System Administrator
>>>
>>> Cell Phone: +1 (415) 871 0742
>>> PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81  C2EE 76A2 46C2 5367 BF90
>
>




Re: Meraki

2013-11-20 Thread Sean Lazar
Meraki did not work for me in a high density office environment, with
heavy wireless usage. Kept dropping clients at peak times. We went with
Aruba.

On 11/19/13 9:25 AM, Hank Disuko wrote:
> Hi folks, 
>  
> I've traditionally been a Cisco Catalyst shop for my switching gear.
>  
> I am doing a significant hardware refresh in one of my offices, which will 
> entail replacing about 20 access switches and a couple core devices.  Pretty 
> simple L3 VLAN environment with VRRP/HSRP, on the physical end I have 1G 
> fibre/copper and 10G fibre.  My core switch of choice will likely be the Cat 
> 4500 series.
>  
> I'm considering Cisco's Meraki platform for my access layer and I'm looking 
> for deployment stories of folks that have deployed Meraki in the 
> past...good/bad/ugly kinda stuff.
>  
> I know Meraki hardcores were upset when Cisco acquired them, but not exactly 
> sure why.
>  
> Anyway, any thoughts would be useful.  Thanks!
>  
> -Hank
> 
>
>