These days almost nobody uses RIP anymore, unless their network has to support a legacy machine or an older router model. In this situation, the best practice is to limit RIP network as such and use a newer routing protocol on the rest part of the network, such as OSPF. Cisco IOS Router supports both […]
Virtual Routing and Forwarding or VRF is a technology that supports multiple routing instance inside a single router (or layer-3 switch). This means a single router can have multiple separated routing table and each one is completely independent. Due to its independency, it also allows the usage of overlapping IP address. Cisco IOS router supports VRF by […]
BGP stands for Border Gateway Protocol and is a routing protocol that builds this gigantic inter-network connection that is known to us all as the internet. There are two types of BGP, namely internal BGP (iBGP) and external BGP (eBGP). The protocols and attributes used in either iBGP or eBGP are standardized for all vendors, […]
Policy Based Routing or PBR is a feature for network administrator to manipulate packet routing and forwarding to follow a defined policy set. In short, if packets arrived on a router matches a characteristic defined in the policy, then it will be given custom actions and ignoring the routing and forwarding logic. Such actions to […]
EIGRP or Enhanced Interior Gateway Routing Protocol is a Cisco proprietary technology for routing. It calculates the best route to a destination using metric value that is based on the link bandwidth and delay. When there are several routes with an equal metric value, by default all dynamic routing protocols, including EIGRP, will used all […]
Link Aggregation or Ether Channel is a technology which allows for two or more physical ports to combine into one logical port providing high availability and increased bandwidth. Link Aggregation Control Protocol (LACP) is a industry standard (IEEE 802.3ad) protocol that is used to bundle two or more links and can work with devices from different […]
When you have dozens or more number of switches in your network, managing VLAN becomes difficult. VLAN Trunking Protocol (VTP) simplifies creation and management of VLANs in network. Before you configure VLANs, you need to understand the basics of VTP protocol. In this post, I will show steps to Configure VLAN Trunking Protocol (VTP) in Cisco […]