Fast Convergence for Designated Ports... [Read the rest of this entry -->]
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Archive for the 'Switching' Category
In this blog post, we will obtain some good solid Tier 1 level knowledge regarding VLAN Access Control Lists or VACLs. These are often also referred to as VLAN Access Maps or just VLAN Maps; thanks to the syntax that is used in their creation.... [Read the rest of this entry -->]
We are going to discuss Cisco’s proprietary extensions to STP algorithm, namely UplinkFast and BackBone Fast. Those two features aim to reduce the time it takes STP to re-activate topology after a link failure. While UplinkFast seems pretty intuitive, BB Fast is more complicated. ... [Read the rest of this entry -->]
In this post we are going to look into STP convergence process. Many people have perfect understanding of STP, but yet face difficulties when they see questions like “How many seconds will it take for STP to recover connectivity if a given link fails?”. The post will follow the outline below:... [Read the rest of this entry -->]
Solving for the Physical Topology Using a Logical Topology
Posted in CCENT, CCIE General, CCIE R&S, IP Addressing, Switching on Feb 4th, 2009
We see our students at all levels sometimes struggle building a network from the “ground-up” using a logical topology diagram. Let us use this blog post to examine a portion of a logical diagram and discuss how one could most easily and accurately setup the network.... [Read the rest of this entry -->]