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IT Certifications

Cisco Port Security Notes

debug-port-security_1

  Here are some notes about Port security: without switchport port-security the feature is not activated. So even if we issue (config-if)#switchport port-security mac-address 0000.05e0.0101, the feature is not there. And any plugged port will be operational: now with switchport ... Read More »

VTP notes

vlan1-not-eligible-for-pruning-by-default

  In this post, I expose some of my notes about Vlan Trunking Protocol (VTP) on Cisco gear.   VTP and Pruning VLAN 1 is not eligible for pruning. only VTP server can set “vtp pruning” command. This propagates to ... Read More »

Cisco EtherChannel Notes

Etherchannel-cisco

Here are a couple of notes I gathered around the subject of Cisco Etherchannel: EtherChannel is a technology that allows a set of ports to be bundled into one logical interface. When one member port fails, traffic that was flowing ... Read More »

Cisco BCMSN started

I’m studying the Cisco Student Guide vol1 right now. Here’s the new techniques I ‘m going to use: – keep a sheet of my study time. I’m using an egg timer. During study, there’s no facebook, no msn, no blogging; ... Read More »