06-09-2020 06:06 AM
Hi,
as Netacad Instructor Trainer I want to prepare for the upcoming DevNet course and am looking through the short Learning Labs courses.
Specifically I found an error in the "Networking Basics" module Step 3 (
https://developer.cisco.com/learning/lab/networking-101-the-basics/step/3
), where it says
"Hubs are less efficient than switches, because they do not have an ARP cache and cannot use ARP." T
This is wrong: Switches also do not have an ARP cache but rather a MAC address cache.
In general I would be interested in a way to easily report errors like this: I'd rather be proofreading than having my students learn wrong things...
Can anyone point me to the best way to do this?
Thanks,
Helmut
06-09-2020 11:16 PM
Hi
You can report errors in the Webex Teams Live Support Chat - https://developer.cisco.com/site/contactus/
I guess the correction should be - Layer 2 switches don't have an ARP cache. Layer 3 switches and routers do have an ARP cache.
Hope this helps
06-12-2020 01:21 AM
Hi omz,
thanks for the reply.
I wonder, though, how helpful it is to report errors to a live chat? Wouldn't a bug tracking system make more sense?
And regarding the special case: considering that the previous page made an explicit point in differentiating between switches as L2 devices and routers as L3 devices I think throwing L3 switches into the mix at this point would confuse beginners more than necessary. So what is intended here, I think, is state that switches have mac tables and hubs (repeaters) don't.
Greetings,
Helmut
06-12-2020 04:08 AM
Hi Helmut
I agree .. it may confuse new students with no prior knowledge.
There is tracking ticket system .. you can try raising a request here - https://devnetsupport.cisco.com/hc/en-us/requests
You can ask in the WebEx Teams room for the correct link and how to raise a request ticket.
I am not sure if I was able to raise the request because I had bought a devnet assc. course.
hope this helps
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