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CCNP Routing and Switching

How OSPF Is Making The World A Better Place


In this tutorial we will discuss the building blocks of OSPF. OSPF tables Neighbor table link state database (LSDB) OSPF packet types There are 5 OSPF packet types: Hello LSU LSR: Link State Request DBD: DataBase Descriptor: checks LSDB synchronization LSAck ... Read More »

Why Spanning Tree Protocol is Used

This short article describes why the Spanning-Tree Protocol is used. It’s easy to connect a bunch of computers to a switch, and connect the switch to its gateway, and you get a full simple network. But then you add another ... Read More »

Spanning Tree Protocol

Please read here for a brief introduction on Spanning Tree Protocol  STP BID and Root Bridge Each BPDU contains the Bridge ID (or BID for short). The Bridge ID is composed of: the bridge priority the bridge MAC address The ... Read More »

CCNP Routing And Switching Exam Fees


Here are the official Pearson Vue Cisco CCNP Routing and Switching exam fees: Implementing Cisco IP Routing (ROUTE) 300-101: exam costs about 200$ Implementing Cisco IP Switched Networks (SWITCH) 300-115: exam costs about 200$ Troubleshooting and Maintaining Cisco IP Networks ... Read More »

Auto QoS configuration


First, let’s see if QoS is enabled on the switch: QoS is disabled. We should enable it on global configuration level: if we want to display QoS settings for an interface, we do a show mls qos interface command: At ... Read More »

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