Posts Tagged ‘VACL’
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.
When you want to filter traffic that is moving from one VLAN to another, things are real CCNA-like and friendly We use an Access Control List. In fact, we should elaborate on that term a bit now in light of this discussion. We actually use a Router-based Access Control List or RACL.
But what if we want to filter traffic that is flowing within a VLAN? On no, a Router-based Access Control List cannot help us! This is when we turn to the VLAN Access Control List. To help us understand this feature, let us create a topology and a sample scenario. Here is the simple topology: