In the early stages of learning about BGP, we learn to set Local Preference on routes we learn from other networks to control how outbound traffic leaves our network. Then we learn to set AS Path prepending on routes we advertise to external networks to control how inbound traffic enters our network. We manipulate the […]
Why AS Path Prepending Doesn’t Always Work Read More »
In this post, we will look at some basic BGP configurations on Junos. Lab Environment The lab is set up as per the below diagram. Junos Default BGP Policy First, here is a quick refresh on the default Junos BGP policy. The default import policy will accept BGP routes from configured peers and import them
Junos Basic BGP Configuration Read More »
What Is Proxy ARP? Proxy ARP is where one host responds to an ARP request on behalf of another device. Typically this is done by a router. The most common scenario is where a host on one network ARPs for a host on a remote network. The router detects this ARP and responds with its
What is the difference between a VLAN and a subnet? At first glance, they can feel very similar. This is especially true when the two terms are used somewhat interchangeably. When we connect a new device to the network and want to know how to address it, we might say any of the following: Each
VLANs versus Subnets – What’s The Difference Read More »
Is Static Routing More Secure Than Dynamic Routing? In static vs dynamic routing, I said that static routing is potentially more secure than dynamic routing. Let’s discuss this a bit more because there is little supporting information about why static routes are seen as more secure. And I’m not sure I agree that they are.
Are Static Routes More Secure Read More »