There are many ways that hackers use. So we need to prepare for them. In this article we are gonna shortly talk about DHCP Snooping , VLAN Hopping And STP Attacks. I would love to talk more about these guys but …
OSPF virtual link is a very important configuration trick, in this article we will look how to configure OSPF virtual link with a little example. After we will see it deeply too. When we are configuring OSPF , we all …
In this article, we will review “OSPF Over NBMA Network“. First let’s take a look at to NBMA Topology types. There are 3 types of NBMA topologies. NBMA TOPOLOGIES * Hub and Spoke (Star topology ) * Partial Mash (Partial …
Border Gateway Protocol is one of the most important protocol providing connection on internet / different autonomous systems and BGP best calculation is the most important attribute of the protocol. Routing protocols find the “best path” to the target network …
It is time to take a look at some security issues. One of the common attacking methods implemented by hackers is : Dsniff. So we need to answer “what is dsniff” , “how dsniff works” , “how we can get rid …
IPv6 is the technology of future, so IPv6 configuration is very important. Basicly, configuring IPv6 on an interface is almost same with IPv4 configuration. Simply under interface mode, you enter the ip address. Here is a configuration example for the IPv6 …
BGP Attributes help Border Gateway Protocol finding the best path. These attributes can be tuned, this makes BGP a flexible protocol. In this example “BGP Tuning Attributes Configuration” is examined deeply. R1#sh ip BGP sum Router-3 and Router-2 have different paths …
After configuring basic redistribution it is time to take a look at advanced redistribution with using more specific commands. We have an example to explain it deeply step by step… 1) Configure EIGRP and OSPF for the network above and advertise all …
Cisco Express Forwarding (CEF) is an advanced layer 3 switching technology used mainly in large core networks to enchance the network performance. Let’s see how we can configure Cisco Express Forwarding (CEF) on cisco devices : SWITCH_A(conf)#ip cef (CEF is …
BGP neighbor configuration, is the first step about configuring BGP. Neighbors are manually configured at Border Gateway Protocol. It takes about 60 seconds to establish a BGP neighbor adjecency. ( can be verified by “sh ip bgp summary” command ) IGP …