Moving Blogs

February 23, 2010

in Uncategorized

The Network Technician will now be moving to www.rowelldionicio.com

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Passing the CCNA Exam

by The Network Technician

After a year of on and off again studying of Cisco’s CCNA I can finally say that I am CCNA certified. It’s not an easy exam to pass. The CCNA exam is a lot harder compared to the Network+, which was my last certification. The format between the Comptia and Cisco exams [...]

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2 Great Forums On Networking Topics

by The Network Technician

If you’re looking for a community to discuss networking topics such as Cisco, certifications, Microsoft certifications, etc. then these two forums will be a great resource for you:

Sadikhov
Networking-forum

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2010 IT Goals and Skills

by The Network Technician

In the past I’ve focused on To Do lists and they never really pan out well for me. This year will be a little different. The To Do list will still be there but it will reflect my “To Be” list. I recently attended an inspirational talk and he got me thinking about focusing on [...]

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User VLAN Do Not Acquire DHCP Address

by The Network Technician

When configuring VLANs on a layer 3 Cisco switch we often tend to segment our network by grouping devices in certain VLANs for security/departmental/geographical purposes.
Enabling inter-VLAN routing allows all the devices on different VLANs to communicate with each other.
If you’ve placed DHCP devices on a VLAN separate from the DHCP server you’ll notice that those [...]

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Be Up to Date with Drivers and Firmware

by The Network Technician

Here’s a great tip for newbie Systems Administrators:
Check regularly for updated drivers and firmware
You’ll never know when things start breaking on you.

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Virtual LANs Notes

by The Network Technician

Virtual LAN Concepts
All LAN devices are in the same broadcast domain.
Common reasons to use vlans:

flexible designs by departments or groups instead of by location
reduce overhead to each host in a vlan by segmenting
reduce workload of STP by limiting a vlan to a single access switch
enforce better security
separate traffic sent from an IP phone

Trunking with ISL [...]

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5 Easy Steps to Securing Your Cisco Switch or Router

by The Network Technician
Thumbnail image for 5 Easy Steps to Securing Your Cisco Switch or Router

Every network administrator should know how to secure their network so that they lessen the encounter of malicious activity. Sometimes it really just comes down to following some best practices in securing a Cisco switch or router. Here are 5 easy steps to secure your Cisco switch or router.
enable secret
When you use the command,
show run
do [...]

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