Blog Migration

I have moved all existing content to my new self-hosted blog: thenetworkstack.com

This site will no longer be updated, so please go to thenetworkstack.com for updates and new content!

-Daniel

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Identifying “onmicrosoft” Email Users

If you use Office 365 and DirSync, a user’s primary email address can end up being username@domain.onmicrosoft.com if not setup correctly.  To identify all users setup this way, connect to Office 365 powershell and run this command:

Get-mailbox -ResultSize unlimited | Select-Object primarysmtpaddress | ? {$_ -clike “*onmicrosoft*”}

 

Cisco vs HP vs Dell CLI – VLAN Configuration

This post continues my series on the differences between these three manufacturers and how they implement L2 and L3 VLANs.

Scenario 1: Create a Layer 2 VLAN

Cisco:
vlan 10

HP:
vlan 10

Dell:
vlan database
vlan 10

Scenario 2: Create a Layer 3 VLAN (that’s routable)

Cisco:
interface vlan 10
ip address 192.168.1.1 255.255.255.0

HP:
vlan 10
ip address 192.168.1.1 255.255.255.0

Dell:
interface vlan 10
ip address 192.168.1.1 255.255.255.0
routing

The biggest difference between all three manufacturers is that HP does not implement a separate VLAN interface for L3 configuration.  Cisco and Dell both require you to go into interface vlan mode before configuring L3 information (IP addressing).  Dell also requires the routing keyword to actually route that VLAN.

**All three manufacturers do require you to input the command IP Routing if you want the switch to route packets**

What this is all about…

So what is this all about? Technology is one of my passions, and since I work with technology, I come across new and interesting tech every day.  I’ll post on here some of my experiences, which includes enterprise hardware/software, consumer hardware/software, project implementations, feature requests, and various other things that I find post worthy.

Let me know what you think, and enjoy!

-Daniel