Stuff that trips me up...

I just finished the layer-2 technologies portion of Workbook 1... and I thought I'd throw this out for your thoughts:

I've been a network admin for various companies for 12 years now, and I'm amazed at the sections in the workbook that I have never seen before, and a couple that sent me scurrying for reading material.

Stuff I have never seen:
Etherchannel over 802.1q tunneling... this is some very cool stuff. Where have you been all my life?!?!?
Hell, static CAM entries... neat, but when would you ever use it?!?!
Flex Links... also kewl, but since 99% of environments run spanning-tree, what's the advantage over letting STP handle redundant links!?!?!

Stuff I trip up on repeatedly:
Fallback Bridging - pain in the butt.
PPPoE - oh my god, brutal. Dialers suck.
PPP over Frame - equally sucky.
Bridging over Frame - I think I'll just write this config on my arm when I do the lab. hehe I can't wait to forget this exercise.

I think the worst for me is Dialers and Virtual-Templates. It's gonna take a lot of time to get them down deep so I'm not stumbling over them.

You techies got any nemesises? nemesis's? nemesi? (What the heck's the plural of nemesis??? )

Mike

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Roguetadhg

Oh PPPoE. The days of Dialup. *tears*

QHalo

I used to have a PPPoE connection for my DSL line. Plural of nemesis is nemeses.

jamesp1983

QHalo wrote: »

I used to have a PPPoE connection for my DSL line. Plural of nemesis is nemeses.

A lot of my smaller customers use that...

mikearama

jamesp1983 wrote: »

A lot of my smaller customers use that...

No doubt... I used to have one as well, back before I became a network guy. Only, I didn't have to understand it at all to use it (as your customers don't).

How it works, though, is a whole different story. And from my experience so far, not a very enjoyable story at all.

thadizzy

If it makes you happy I'll admit these topics were the first one I suppressed after passing the lab

aldous

for me its QoS no matter how much i study/practice nothing really clicks even though i passed the mpls/qos ccip exam i still don't feel comfortable. used to be multicast but "troubleshooting IP Routing Protocols" was really excellent for improving my understanding

Zartanasaurus

mikearama wrote: »

Hell, static CAM entries... neat, but when would you ever use it?!?!

After mapping a unicast IP address to a multicast MAC address, you'll want to create a static CAM entry for the ports the MACs live on.