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CCNP Routing and Switching

STP Notes


This is the topology I’m using for these notes. Electing a root bridge for a vlan: in my lab, both switches had the same Bridge priority, which was the default 32768 + the Vlan ID number. So the tie was ... Read More »

Etherchannel Notes Pt2


a port channel can be of two types: L2 port channel or L3 port channel. L2 port channel: formed of L2 interfaces. L3 port channel: formed of L3 interfaces. We get a L3 interface by issuing no switchport interface command. ... Read More »

Cisco Port Security Notes


  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


  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


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 »

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