Network and Security

How to Configure RIP on Juniper in GNS3 1.1 In this article i will show you how to run the RIP ( Routing Information Protocol ) among juniper routers. when you configure the RIP on junos by default it will enable RIP v2 & this is one of the difference from Cisco where you need to configure version2 manually. I have simulated this lab on gns3 which is one famous network simulator. For juniper simulation i have used junos olive  only for study purpose  and  junos olive  is not suitable for any type of commercial use.  Gns3 Labs detail are as mention below but you can use  any versions of these software. Gns3 version= Gns3 1.1 Junos version=    JunOS Olive 12.1 VM image VM VirtualBox version=    4.2.4  If you want learn more about the configuration of junos in gns3 you can visit how to configure junos on gns3 . Lab Requirements: There are three Junos routers in given topology which are connected with eac...

Wide Area Networks Wide Area Networks can be seen as connection pipes that interconnect Local Area Networks. Usually WANs in contrast to LANs are not owned by the public; they are owned by service providers and their functionality-infrastructure is leased in order for LANs to be able to extend their expandability and make use of distant-remote services. A number of different WAN connection types exist today. Choosing the right WAN connection type is up to you, but the information in this article will make your decision process much easier. WAN Connection Types Leased Line: This is considered to be a dedicated point-to-point connection type where a permanent communication path exists between a Customer Premise Equipment (CPE) on one site and a CPE at the remote site communicating through a Data Communicating Equipment (DCE) within the providers’ site. Synchronous serial lines are used for this connection and the most frequent protocols observed in these lines are HD...

Let’s start with simple explanation of the new format. As you may know, the new-generation-IP talk started in the early 1990s when we were slowly running out of IP addresses. We had quite a few proposals for the new address format but in 1995 IPv6 was selected and the RFCs were officially entered into the RFC repository. IPv6 was created based off of IPv4 with some of the useful IPv4 features carried over to IPv6. There were many changes to the new IP format, however, and I will list some of them here below. Expanded Addressing Capabilities : IPv6 address size increased from 32 bits to 128 bits. Because of the increased size the new address will support a higher number of nodes, more levels of addressing hierarchy, and a much simpler autoconfiguration of addresses for remote users. A new address type was created, called anycast . Header Format Simplification : To simplify the entire IP format, some of the IPv4 header fields were dropped or made optional in IPv6. Fl...

The "heart" of the Internet as we know it today is the Internet Protocol (IP) which is responsible for routing data to the appropriate destination. It belongs to the group of routed protocols like IPX (Internetwork Packet Exchange), but unlike other routed protocols, the IP was designed to serve the Internet and its internetworks. In addition to IP, the Internet has various control protocols operating at the network layer (layer three of the OSI model), including: ICMP: Internet Control Message Protocol ARP: Address Resolution Protocol RARP: Reverse Address Resolution Protocol BOOTP: Bootstrap Protocol DHCP: Dynamic Host Configuration Protocol So let’s take a look at these protocols in more detail! ICMP: Internet Control Message Protocol ICMP protocol was designed with the unreliable characteristics of the IP protocol in mind. Due to the unreliability and the connectionless behavior of IP there was no way of informing the originator ...