S5E11: "Quell Our Shorts"

Posted 2020-07-19 23:59
Modified 2020-07-19 18:35
Comments 0

We talk about QoS (Quality of Service)/rate-limiting and optimizing your network traffic before it hits The Tubes™.

• Just the Tip
• Notes
• 15 Clams
• Errata
• Music

Just the Tip

• F5 has a pretty serious vuln, so patch your shit.

Notes

Starts at 15m31s.

I was drinking a Campo Viejo Rioja Tempranillo and a Castello del Poggio Sweet Red. Paden was drinking Coors Light. Jthan was drinking Labatt Blue Light.

• Quality-of-Service/Rate-limiting
  • A way to artificially manipulate network traffic to ensure the priority of other traffic.
  • Jthan wanted to know why his network went to shit whenever he’d start uploading files.
  • “There’s no distinction between a ‘corporate/professional’ network and a ‘home’ network.”
    • That’s a false dichotomy created by network hardware providers. The true distinction is between well-designed and well-executed networks, and those without a good design and/or execution.
    • The latter usually don’t see a level of scale where the distinction is made, and thus any actual difference is just handwaving as “residential networking”.
  • I suggested that it’s probably actually queueing/scheduling, which is very likely.
  • He’s also using a wireless network, which will affect the throughput of the WAPs’ radio cards.
  • But QoS would still perhaps help a little bit. Back on track…
  • Quality-of-Services is an IEEE standard, 802.1e (and then rolled into P802.1p).
    • There is, of course, a wireless variant, 802.11e.
  • QoS theory
    • Designing some/specific protocols to lower in priority in favor of another one. SIP is a good example.
  • You can use “tc” to implement QoS.
  • Speaking generally, on the network you want your downloads to be faster (or more reliable, to be accurate) than uploads. But on a host’s level, you typically want uploads prioritized.

15 Clams

In this segment, Jthan shares with you a little slice of life. The title is a reference to this video. (2m16s in)

Starts at 1h03m55s.

Jthan talks about Etherpad and Etherpad-lite, but then randomly switches the topic to dedicated-service hosting, so I have to teach him cost benefit analysis 101.

Errata

• The juggernaut, bitch.
• A “tacodemon“ (cacodemon) from Doom.
• Shoutout to The Admin Admin Podcast (and that guy).
  • We mentioned them on S0E8, and one of their members came up again in S2E4. I was right! It was season 0, before Paden even joined us.
• I can’t find a source for Paden’s thing about banning install of non-OEM OSes.
• The IP address Paden started rambling off was the beginning of an RFC 3927 address.
• I sometimes refer to “802.1e” as “802.11e” and vice versa, and forget to mention P802.1p. Oops!
• At the beginning of the 15 Clams, I say “30Mbps down”. I should have said “symmetric 15Mbps up” or something, oops.

Music

Author r00t^2
Categories Season Five