What is BFD in Routing? Bidirectional Forwarding Detection (BFD) is a routing protocol designed to detect link failures in a network. It is a simple, lightweight protocol that can be used to detect faults in any network layer. BFD works by sending periodic messages between two nodes in a network. If the messages stop arriving, … Read more
MPLS is a protocol for speeding up the forwarding of packets through a network. It does this by labelling the packets with short, fixed-length tags. The labels are used to identify the next hop that the packet should be forwarded to, and they are removed at each hop. This allows the network to quickly forward … Read more
Conditional Advertisement in BGP: In the above example, we have to set R2 as a route reflector and the other two as clients R1 & R2. We have passed a loopback on every router. And above you can see that a link with 90MB is for ABC city and a 50MB link for XYZ city. … Read more
Does the PVID need to match the Untagged VLAN? The PVID (Primary VLAN ID) is the VLAN ID that is assigned to a port when it is initially configured. This can be changed later, but the PVID must always be specified when configuring a port. Untagged VLANs are those that do not have a specific … Read more
A collision domain refers to a network segment where packets sent from one device can collide with packets sent from another device. Collisions occur when two devices on the same network segment transmit packets simultaneously. This causes the signals to interfere with each other, corrupting the data. The corruption renders the frames unusable, requiring retransmission. … Read more