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An overview of OS support for IPv6 resolver distribution methods

In this post I will be going over the various levels of support for IPv6 resolver distribution for popular operating systems. Focus on desktop and mobile versions of OSes as those are the ones where we are usually automatically distributing resolver information. Dual stack is implied but IPv6 only functionality can be gleaned from said information as well.

Continue reading “An overview of OS support for IPv6 resolver distribution methods”

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CCIE Lab Diary – EIGRP Lab

Overview/Goals

Implement EIGRP in a 9 router network with frame relay as the underlying L2 encapsulation to demonstrate protocol behaviours in a NBMA environment. Also involves tweaking of various parameters using summarization, redistribution, various stub types, distribute lists etc.

Technologies involved:

  • Serial interfaces
  • Ethernet interfaces
  • Frame Relay
  • EIGRP

Logical topology

eigrplab

Pitfalls/Things to watch out for

  • Frame Relay PVC issues
  • EIGRP timers on “slow” links, might want to tune them
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CCIE Lab Diary – Layer 2 Lab

This is going to be a series of posts regarding the labs from the CCIE Routing and Switching class at UOIT.

I feel like these labs are complex enough for such posts to be interesting.

Overview/Goals

As the title of the post suggest this is a lab that incorporates various L2 technologies to implement.

Technologies involved:

  • Ethernet interfaces
  • Serial interfaces
  • VLANs
  • STP
  • LAGG (EtherChannel)
  • PPP with CHAP/PAP authentication
  • Frame Relay (ugh.)

Logical topology

l2lablogicaltopology

Pitfalls/Things to watch out for

  • The lab requires you to configure VLAN pruning on trunk links appropriately. Make sure to take a look at both the physical and logical topology to figure that out. Do this right the first time, you don’t want to backtrack later to fix issues with that later.
  • Frame relay is just as annoying as it was during the CCNA labs. Lack of practice with it does not help. Not all the DLCIs shown in the logical topology actually need to be used.
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Auto playing videos

Usually don’t do posts like these but..

Twitter, Facebook, $SOCIALNETWORKINGSITE:

Auto playing videos are stupid.

  • You are wasting my bandwidth and yours
  • If I wanted to see the video, I would you know..click it and watch it. What a novel concept.

Stop. doing. them.

I do not care if it is the cutest cat video this side of the Milky Way or a horrifying video of a journalist being shot. Just stop.

Thanks,
An Internet user who knows how to click things he wants to watch.