Lan Network with Redundancy.ppt
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This document discusses setting up a redundant LAN network. It describes what a LAN network is and the importance of network redundancy. It then provides details on various methods for implementing redundancy, including creating VPNs, using redundancy protocols like HSRP and VRRP, basic routing, MPLS routing, access lists, NAT/PAT, and configuring redundant LAN connections. The document includes configuration examples and concludes that the project was a valuable learning experience for understanding real-world networking operations.
Lan Network with Redundancy.ppt
- 1. LAN Network with Redundancy Efforts By:- Santanu Mukhopadhyay-A1607111013 Aditya Sharma-A1607111022
- 2. What is a LAN Network???? A local area network (LAN) is a computer network which extends in a small coverage of geographical area (ex-home, school, computer laboratory, office building or group of buildings) A LAN is composed of internally connected functional workstations and pc’, each capable of accessing and sharing data and devices inside the network (ex- printers, scanners and data storage devices, anywhere on the LAN).
- 3. The sole concept of network redundancy is to provide alternate and efficient paths for data to travel along without any interruption. Importance In our 21st century all networks are high-tech build and high speed. A simple example would be if you have a single network connection from your core site to each remote office you connect with. What will happen if the link went down?? In this section we will find the solution of this scenario to help designing and plan for a backup solution that you can count on and one that is cost effective and will not break the bank. Network redundancy is very simple concept. If there is a single point of failure and it fails the network, then there is nothing to rely on. What is Network Redundancy?
- 4. Important steps to build redundancy A risk analysis assessment must take place. The core sites must be taken into consideration if that is where the bulk of network resources are located. Routing and routing protocols need to be considered. Solutions exist only when specific routing and switching (ex-HSRP,VRRP,GLBP) protocols are applied the designing of the network to achieve redundancy.
- 5. Procedure Creating VPN (Virtual Private Network) Redundancy Protocols(HSRP,VRRP,GLBP) Basic Routing MPLS Routing Applying Access List Network Address Translation( Static & Dynamic) & Port Address Translation (NAT Overload)
- 6. Redundancy Protocols HSRP Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing a fault-tolerant default gateway. The protocol establishes a framework between network routers in order to achieve default gateway failover if the primary gateway becomes inaccessible, in close association with a rapid-converging routing protocol like EIGRP or OSPF. By multicasting packets, HSRP sends its hello messages to the multicast address 224.0.0.2 (all routers) for version 1. VRRP Virtual Router Redundancy Protocol (VRRP) is a networking protocol that provides for automatic assignment of available Internet Protocol (IP) routers to participate as a host. This increases the availability and reliability of routing paths via automatic default gateway selections on an IP sub-network.
- 7. Commands for Configuring HSRP R3#config t R3(conf)#vlan database R3(vlan)#vlan 50 name ssales R3(conf)#int ra fa 1/0 – 1 R3(config-if-ra)#no sh R3(config-if-ra)#switchport mode access R3(config-if-ra)#switchport access vlan 50 R3(config-if-ra)#exit R3(conf)#int vlan 50 R3(config-if)#ip address 192.168.1.2 255.255.255.0 R3(conf)#standby 8 ip 192.168.1.1 R3(conf)#sh standby
- 9. VPN(Virtual Private Network) A VPN is a type of a secured network that allows the provisioning of private network services for an organization over the unsecured network using tunneling protocols. By the unsecured network, we mean a public or shared infrastructure such as the internet or service provider backbone network. The shared service provider backbone network is also known as the VPN Backbone. VPN is provisioned using technologies such as Frame Relay and Asynchronous Transfer Mode virtual circuits for long time. However over the past few years IP and MPLS based VPN’s have been a part of innovations.
- 10. CISCO Packet Tracer Model
- 11. Basic Routing Router> Enable Router# Configure terminal Router(config) # int fa (0/0, 1/0) Route (config-if)# ip address (ip address) (subnet mask) Router(config-if)# no shutdown Router(config-if)#exit Router(config)#int serial 2/0 Router(config-if)# ip address (ip address) (subnet mask) Router(config-if)# no shutdown Router(config-if)# exit Router(config)#int serial 3/0 Router(config-if)# ip address (ip address) (subnet mask) Router(config-if)# no shutdown Router(config-if)# exit No Shutdown command is used to change the state of Interface from UP to DOWN or from DOWN to UP.
- 12. RIP Routing( RIP V1,RIP V2) RIP V1 Router(configure)# router rip Router(configure-router)# (Connected Network1 address) Router(configure-router)# (connected Network2 address) RIP V2 Router(configure)# router rip Router(configure)# Version 2 Router(configure-router)# (Connected Network1 address) Router(configure-router)# (connected Network2 address)
- 13. MPLS Routing It is a mechanism in high- performance telecommunications networks that directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table. The labels identify virtual links (paths) between distant nodes rather than endpoints. MPLS can encapsulate packets of various network protocols. MPLS supports a range of access technologies, including ATM, Frame Relay, and DSL. A Label Switched Path is a path via Label Switched Routers (LSR) in a MPLS enabled network. Packets are switched based on labels applied to the packet. LSP’s may be signaled using the Tag Distribution Protocol (TDP), the Label Distribution Protocol (LDP) and the Resource Reservation Protocol (RSVP).
- 14. Access List Router # configure Router(configure) #access-list udp 150 permit any ip address netmask port number Router(configure)# access-list tcp 150 permit any ip address netmask port number Router(configure)# access-list tcp 150 deny ip address netmask ip address netmask Router(configure)# access-list tcp permit any any Router(configure)# int s1 Router(configure-if)# ip access-group 150 in Router(configure-if)# exit Router(configure)# exit
- 15. NAT &PAT Static NAT Router (config )# int e 0/0 Router (config-if)# ipnat inside Router (config)# int s0/0 Router(config-if)# ipnat outside Router(Config)# ipnat inside source static (ip address)(ip address) Dynamic NAT Router (config )# int e 0/0 Router (config-if)# ipnat inside Router (config)# int s0/0 Router(config-if)# ipnat outside Router(Config)# ipnat pool Amity ip address ip address netmask PAT Router(config)# interface fastethernet 0/0 Router(config-if)# ip nat inside Router(config)#interface serial 0/0/0 Router(config-if)# ip nat outside Router(config)# ip nat inside source list 10 interface serial 0/0/0 overload Router(config)# access-list 10 permit ip add. Subnetmask
- 16. Redundant LAN Connection To handle a system communication failure that use to occur within or outside of a server's local subnet. The server's 1. NIC Card 2. Default gateway Steps Go to Control Panel, Network and Dial-up Connections- Local Area Connection- Properties. Select Internet Protocol and click Properties. On the General tab, click Advanced. Clear the Automatic Metric check box at the bottom of resulting dialog box. Enter the metric you want to assign to this NIC.
- 18. Conclusion(s) We had done a practical project under the supervision of an University for the first time in our life. Minor Project has taught us all the networking operations which are done in an organization. Running Network programs in a stipulated time period makes any student perfect and updated. Going through the working of minor project, we had our broader view about discipline and integrity of networking operations in an organization.