IP Networking - Cisco onfigurations - Report Example

? IP Networking al Affiliation) Executive Summary A company X wants to connect its corporate headquarters to three regional branches (Region 1, Region 2, and Region 3). This will be made possible by developing the Cisco configurations and IP addressing scheme. Previously, the company contracted a consultant to carry out the activity but it was poorly done. The IP address scheme was not proportional leading to a routing table: some regions were large than the others. Additionally, VLAN was not developed in order to separate the broadcast traffic. Company X headquarters has a total of four directorates and 400 employees. The department includes the executive leadership, research and development, human resources, and sales. Region 1 has customer service and accounting department, Region 2 has marketing and advertising department, while region 3 has inventory, manufacturing, and engineering departments. To accommodate the network growth the company will have to use the VLSM (Variable Length Subnet Mask) which was previously ignored by a consultant. This is after the company realized that all the network addresses are statically generated. This led to a high administration overhead when the networks and locations are added to the network. The company therefore has opted to come up with a standard IP addressing table for the WAN links and their locations. It has also decided to sample the configuration of Cisco for each and every location. Additionally, it will deny the users in Region 2 from accessing the offices of region 3 serial interface. At the end of the configuration the company will generate a network diagram capturing the whole system. Technical Details IP Addressing Table and WAN links for the Locations ASSIGNED IP NETWORKS IP Network Region Department IP Address VLAN 207.17.5.0/24 Corporate X headquarter Executive Leadership 20 1 Sales 80 1 Human Resources 25 1 Research and Development 275 2 207.17.8.0/24 Region 1 Accounting 20 1 Customer Service 80 1 207.17.9.0/24 Region 2 Advertising 23 1 Marketing 47 1 207.17.10.0/24 Region 3 Manufacturing 25 1 Engineering 78 1 Inventory 22 1 WAN LINKS IP Network Region     WAN Required 207.17.11.0./24 HQ to Region 1     2 HQ to Region 2     2 HQ to Region 3     2 Future expansion     2 Future expansion     2 Future expansion     2 Cisco configurations Here it is assumed that every network interfaces are operational and is ready for consultant’s configuration. The configuration entails the Ethernet configuration, VLAN configurations, the serial ports, routing protocols, and the summarization route from the headquarters’ office to region 1. The section describes how the three regional offices will be connected to the corporate’s headquarter. The corporate will use the following WAN options; synchronous leased line, frame relay, asynchronous dial-up line, and x.25. The WAN encapsulation will comprise of the point-to-point protocol, frame relay, X.25, and HDLC (High Level Data Link Control). The routed protocols will include IP and IPX. Other feature in the system are Dynamic IP routing, IPX routing and Dynamic IP, IPX routes and Static IP, sub-interfaces, and Dynamic Host Configuration Protocol. Additionally, the configurations options include the Command line Interface and cisco 805 Fast Step. The table below shows the sample network configuring the three regions and the headquarters to ISP networks. Region No WAN options WAN Encapsulations Routed Protocol Other Features Configuration Options Headquarters Synchronous Leased Line HDLC IP Dynamic IP routing CLI, Cisco Fast Step Software Region 1 Asynchronous dial up line PPP IP Static IP route Firewall IPCP/PPP CLI, Cisco Fast Step Software Region 2 Synchronous Leased Line PPP IP Static IP route CLI, Cisco Fast Step Software Region 3 Frame Relay Frame Relay IP Firewall, Static IP route, and NAT overload CLI, Cisco Fast Step Software Before configuring, the following steps will be done: the network administrators from the headquarters and regional offices will set up the IP address scheme and decide the type of IP protocol that will be used. The network administrators from the headquarters and regional offices will also set up the IPX and IP scheme and decide the type of routing protocol to be used. HDLC (Leased Line) The network below shows the regional office to regional office network with the synchronous leased line that runs HDLS. The network will use the IP as a routed protocol to find the route to the headquarters office. HQ (207.17.5.0/24) 207.17.11.0/24 Region 1(207.17.8.0)/24 HQ (207.17.5.0/24) 207.17.11.0/24 Region 2(207.17.9.0/24) HQ (207.17.5.0/24) 207.17.11.0/24 Region 3(207.17.10.0/24) The Region 1 Context Configuration Hostname Admin domain isp interface gigabit Ethernet 0/0.3    name if outside    region 1    ip address 207.17.8.0/24    no shutdown interface gigabitethernet 0/1.4    nameif inside the region 1 or 3       ip address 207.17.8.0/24    no shutdown passwd secret1969 enable password h1andl0 route outside 0 0 209.165.201.1 1 ssh 10.1.1.75 255.255.255.255 inside nat (inside) 1 10.1.1.0 255.255.255.0 ! This context uses dynamic NAT for inside users that access the outside global (outside) 1 209.165.201.10-209.165.201.29 ! The host at 10.1.1.75 has access to the Websense server in Customer C, so ! it needs a static translation for use in Customer C's access list static (inside,outside) 209.165.201.30 10.1.1.75 netmask 255.255.255.255 Region 2 Context Configuration interface gigabitethernet 0/0.3    nameif outside    security-level 0    ip address 207.17.9.0)/24    no shutdown interface gigabitethernet 0/1.5    nameif inside    security-level 100    ip address 10.1.2.1 255.255.255.0    no shutdown passwd hell0! enable password enter55 route outside 0 0 207.17.8.0)/24 ! The Customer A context has a second network behind an inside router that requires a ! static route. All other traffic is handled by the default route pointing to the router. route inside 192.168.1.0 255.255.255.0 10.1.2.2 1 nat (inside) 1 10.1.2.0 255.255.255.0 ! This context uses dynamic PAT for inside users that access that outside. The outside ! interface address is used for the PAT address global (outside) 1 interface Region 3 Context Configuration interface gigabitethernet 0/0.3    nameif outside    security-level 0    ip address 207.17.10.0)/24    no shutdown interface gigabitethernet 0/1.6    nameif inside    security-level 100    ip address 10.1.3.1 255.255.255.0    no shutdown passwd tenac10us enable password defen$e route outside 0 0 207.17.10.0)/24 nat (inside) 1 10.1.3.0 255.255.255.0 ! This context uses dynamic PAT for inside users that access the outside global (outside) 1 209.165.201.9 netmask 255.255.255.255 access-list INTERNET remark Inside users only access HTTP and HTTPS servers on the outside access-list INTERNET extended permit tcp any any eq http access-list INTERNET extended permit tcp any any eq https access-group INTERNET in interface inside Global Parameters For global parameter the router will be configured as outlined below The configuration mode is entered with a configure terminal command. Then we will specify the router’s name, by inputing the hostname name command, then the encrypted password will be enabled to authorize the router access. The router will be configured to netsub range of zero as a valid address range. The command will be generated as ip subnet-zero. The Ethernet interface will be configured as shown in the figure below Step Activity Router Prompt Command 1 Enter the Ethernet interface configuration mode Router # Interface Ethernet zero 2 Subnet Mask and set the IP address Router # IP address mask 3 Enable the interface and configuration alterations Router # No shutting down 4 Exit the Ethernet interface configuration mode Router # Exit Serial interface The serial interface was configured using the steps outlined below Step Activity Router Prompt Command 1 Enter the serial interface configuration Router # Interface serial zero 2 Set the IP address Router # IP unnumbered Ethernet zero 3 Specify the PPP Router # Encapsulation ppp 4 Enable the interface and changes in configuration Router # No shutting down 5 Exit the mode of configuration Router # Exit 6 Put up a static route Router # Ip route 0.0.0.0.0.0 serial 0 Route Summarization VLAN Configuration IP Routing Protocol Protocol Automatic Summarization Capability to switch off automatic summarization Capability to summarize classful Network Boundary RIPv1 Yes No No RIPv2 Yes Yes No IGRP Yes No No EIGRP Yes Yes Yes OSPF No - Yes IS-IS No - Yes Conclusion Due to mergers and corporate expansion of the corporate, the number of network and subnets number in the routing table is increasing. The growth taxes, bandwidth, and memory used in maintaining the routing table. The route summarization will manage the corporate just like the growth of the internet. Thorough route summarization understanding will implement the scalable network. The paper discussed the router summarization and the relationship existing between the VSKM and summarization. To accommodate the network growth the company to use the VLSM (Variable Length Subnet Mask) this was previously ignored by a consultant. This is after the company realized that all the network addresses are statically generated. This led to a high administration overhead when the networks and locations are added to the network. The company opted to come up with a standard IP addressing table for the WAN links and their locations. It has also decided to sample the configuration of cisco for each and every location. Additionally, it denied the users in Region 2 from accessing the offices of region 3 serial interface. At the end of the configuration the company will generate a network diagram capturing the whole system. Reference Systems, I. (1999). Cisco IOS 12.0 interface configuration. Indianapolis, IN: Cisco Press. Read More