New Blog Post: How RSTP handles Topology Changes

Started by NetworkGroover, September 21, 2015, 06:14:44 PM

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NetworkGroover

September 21, 2015, 06:14:44 PM
Hey guys, I'm slowly starting my studies up again, and put together a blog post a not-so-exciting topic, but figured I'd throw it out there as I value your feedback and hopefully some of you may find it helpful.  Let me know if there's any glaring errors if you get bored enough to read it. ;)

http://aspiringnetworker.blogspot.com/2015/09/how-rapid-spanning-tree-protocol-rstp.html
Engineer by day, DJ by night, family first always

deanwebb

#1
September 21, 2015, 08:31:28 PM
QuoteThe Ubuntu server can be ignored for the purposes of this blog entry.

Except by me. How do I know it's not going to try to do some kind of hack to become the root switch?
Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.
"The world could perish if people only worked on things that were easy to handle." -- Vladimir Savchenko
Вопросы есть? Вопросов нет! | BCEB: Belkin Certified Expert Baffler | "Plan B is Plan A with an element of panic." -- John Clarke
Accounting is architecture, remember that!
Air gaps are high-latency Internet connections.

NetworkGroover

#2
September 21, 2015, 11:11:03 PM
Quote from: deanwebb on September 21, 2015, 08:31:28 PM
QuoteThe Ubuntu server can be ignored for the purposes of this blog entry.

Except by me. How do I know it's not going to try to do some kind of hack to become the root switch?

Haha... I knew I should have just removed it from the topology... but I was doing some research on Edge port behavior and was too lazy to remove it.. ;P
Engineer by day, DJ by night, family first always

deanwebb

#3
September 22, 2015, 07:07:04 AM
"Too lazy to remove it..." <-- HOW WE GET BREACHES!!!!!

:ivan:
Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.
"The world could perish if people only worked on things that were easy to handle." -- Vladimir Savchenko
Вопросы есть? Вопросов нет! | BCEB: Belkin Certified Expert Baffler | "Plan B is Plan A with an element of panic." -- John Clarke
Accounting is architecture, remember that!
Air gaps are high-latency Internet connections.

NetworkGroover

#4
September 22, 2015, 09:25:27 AM
"Dude! It's the way we've been doing it for the past 6 years so it can't be wrong!"
Engineer by day, DJ by night, family first always

deanwebb

#5
September 22, 2015, 10:20:01 AM
Quote from: AspiringNetworker on September 22, 2015, 09:25:27 AM
"Dude! It's the way we've been doing it for the past 6 years so it can't be wrong!"
:vendors:
Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.
"The world could perish if people only worked on things that were easy to handle." -- Vladimir Savchenko
Вопросы есть? Вопросов нет! | BCEB: Belkin Certified Expert Baffler | "Plan B is Plan A with an element of panic." -- John Clarke
Accounting is architecture, remember that!
Air gaps are high-latency Internet connections.

that1guy15

#6
September 22, 2015, 12:30:35 PM
Great post dude!! Nice use of visuals as well.
That1guy15
@that1guy_15
blog.movingonesandzeros.net

NetworkGroover

#7
September 22, 2015, 02:18:27 PM
Quote from: that1guy15 on September 22, 2015, 12:30:35 PM
Great post dude!! Nice use of visuals as well.

Thanks man.. much appreciate it from a veteran blogger himself. ;)
Engineer by day, DJ by night, family first always

LynK

#8
September 22, 2015, 03:56:11 PM
@dean

make everything a firewall. actually make the cables firewalls too. Only allow use on pins 3 and 6.

thanks.
Sys Admin: "You have a stuck route"
            Me: "You have an incorrect Default Gateway"

deanwebb

#9
September 22, 2015, 06:18:45 PM
Quote from: LynK on September 22, 2015, 03:56:11 PM
@dean

make everything a firewall. actually make the cables firewalls too. Only allow use on pins 3 and 6.

thanks.
:applause:

Consider it done, my friend.
Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.
"The world could perish if people only worked on things that were easy to handle." -- Vladimir Savchenko
Вопросы есть? Вопросов нет! | BCEB: Belkin Certified Expert Baffler | "Plan B is Plan A with an element of panic." -- John Clarke
Accounting is architecture, remember that!
Air gaps are high-latency Internet connections.

that1guy15

#10
September 22, 2015, 07:04:27 PM
As a network engineer the more you can remove from my network the better. Servers, PCs and mobile devices just cause issues and stupid shit. Get em all off!!

Network, UCS, VMware and monitoring servers is the perfect network. Rest can burn in hell and die!!
That1guy15
@that1guy_15
blog.movingonesandzeros.net

deanwebb

#11
September 22, 2015, 07:50:20 PM
No, every network needs desktop clients.

Just two of them, so as to generate test ping traffic.
Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.
"The world could perish if people only worked on things that were easy to handle." -- Vladimir Savchenko
Вопросы есть? Вопросов нет! | BCEB: Belkin Certified Expert Baffler | "Plan B is Plan A with an element of panic." -- John Clarke
Accounting is architecture, remember that!
Air gaps are high-latency Internet connections.

icecream-guy

#12
September 23, 2015, 07:22:30 AM
Every host in it's own vlan, on its own network, behind it's own firewall, in it's own access layer block, and in its' own VRF. 
That should lock the security down.  :partay:
:professorcat:

My Moral Fibers have been cut.

deanwebb

#13
September 23, 2015, 09:28:26 AM
You forgot the host IPS, DNS security, and redirecting all Internet traffic to a locally-cached copy of the Internet that has been scanned for malware.

That last one is what I call "the fog". It's the cloud, but right there on top of you.
Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.
"The world could perish if people only worked on things that were easy to handle." -- Vladimir Savchenko
Вопросы есть? Вопросов нет! | BCEB: Belkin Certified Expert Baffler | "Plan B is Plan A with an element of panic." -- John Clarke
Accounting is architecture, remember that!
Air gaps are high-latency Internet connections.

that1guy15

#14
September 23, 2015, 09:42:17 AM
Quote from: deanwebb on September 23, 2015, 09:28:26 AM
You forgot the host IPS, DNS security, and redirecting all Internet traffic to a locally-cached copy of the Internet that has been scanned for malware.

That last one is what I call "the fog". It's the cloud, but right there on top of you.

Funny "Fog Computing" is being termed now for Hybrid cloud deployments that dont quite sit on-prem nor 100% cloud.

That1guy15
@that1guy_15
blog.movingonesandzeros.net
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