Is Path MTU discovery broken? Is your MTU shorter than 1500 due to PPoE
or tunneling?
Do the two different routers have different default MTU settings?
How about something more basic: Any packet loss? Ping with larger
packets like -l 1300.
On 8/31/2015 3:04 PM, Jason McKemie wrote:
The one I experienced first hand was at least 5 years old, it was a
linksys with an aircard interface - presumably supplied by AT&T - I
didn't get the model number. It does seem like it maybe worked
alright for a very short amount of time and then deteriorated quickly
- although they did not claim to have that issue when using it with
the aircard.
On Mon, Aug 31, 2015 at 1:52 PM, Ken Hohhof <[email protected]
<mailto:[email protected]>> wrote:
How antiquated? 5 years, 10 years?
Some of the really old routers had connection tracking table as
small as 200 entries or less. One website (or one smartphone) can
chew through that.
Does it get better after power cycling the router, but then
quickly get bad again?
*From:* Jason McKemie <mailto:[email protected]>
*Sent:* Monday, August 31, 2015 1:38 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] Pages not loading properly
I noticed it with a few pages when I tried. Facebook seemed to
load OK when I opened it in a browser on which I was already
signed in. When I loaded it on another browser, I got text only.
AOL loaded with no images, as did a couple others that I tried.
However, when I bypassed the router everything seemed to clear
up. I installed a new router at that customer's location and did
not see the problem afterwards. The customers who I have heard
this from all are using fairly antiquated routers, but they're all
different brands. Just seems strange that I would see similar
symptoms arising from more than one of them.
On Mon, Aug 31, 2015 at 1:01 PM, Ken Hohhof <[email protected]
<mailto:[email protected]>> wrote:
All pages, or just some pages? If only some pages, what is the
common thread? HTTPS? Third party ads and trackers? HTTPS
pages tend to be most affected by network issues. Ads and
trackers can actually be an issue with servers in your region,
but other customers would be reporting it also. Some
customers only go to a handful of websites that are laden with
third party content and if those ads/trackers don’t load the
whole page can fail. Other customers go to lots of websites
and realize the problem is only with certain sites.
I saw the problem you describe one time with a customer whose
computer was infected with a clickbot, it was consuming a ton
of upstream bandwidth plus exceeding the connection table in
his router, causing other TCP sessions to be dropped, with the
reported symptoms “pages load slow or not at all”.
*From:* Jason McKemie <mailto:[email protected]>
*Sent:* Monday, August 31, 2015 12:51 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* [AFMUG] Pages not loading properly
I've had a couple situations where someone asks about pages
not loading correctly. Generally it is images not loading, but
that appears to be mixed with pages sporadically not loading
at all. I've only seen it once in person, and replacing the
customer's router appeared to fix the issue. I've heard from
at least one other person that has the issue on a specific
device, but only while on their home network. I have not tried
replacing the router at their location. Does this sound like
symptoms of a router going bad or something else? Thanks.
-Jason
