have a 12 port patch panel‚ a 12 port Cisco switch‚ a Cisco router‚ and a Cisco ASA. The building adjacent to the main office‚ which is part of the same domain/network‚ will house 10 to 15 more travel agents. I will set up a file server so all users can have access to a public share drive‚ where all users will have access to the same drive. The basis of the WAN standardized infrastructure will be to utilize a 1 GB Ethernet connected to Cisco Unified CME Routers that utilizes T-1 connections in U
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Access Point (DSAP) and Source SAP allow upper-layers to work over different LANs by providing comms between Network & data/physical layers regardless of physical/logical actually used Physical Physical topology DTE - Data terminal equipment = router etc. DCE - Data circuit terminating equipment @ service provider DTE connects through modem or Channel / data service unit (C/DSU) Connection oriented / Connectionless Connectionless Not guarenteed delivery IPX or UDP IP. TCP adds flow control
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1. When a router is first powered on‚ it completes a four-step initialization process: 1. Preforming a power-on self test (POST) 2. Loading a bootstrap program 3. Loading an IOS 4. Loading a configuration file The last three of these steps require the router to copy the files into RAM. Normally‚ most routers load an IOS image that is stored in flash memory and an initial configuration stored in NVRAM. 2. Routers use the following logic‚ in order‚ to attempt to load an IOS: 1. Load
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service password-encryption ! hostname SOUTH ! ! ! enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1 ! ! ip dhcp excluded-address 10.10.10.65 10.10.10.69 ! ip dhcp pool SOUTH_DHCP network 10.10.10.64 255.255.255.224 default-router 10.10.10.65 ! ! ! username NORTH password 0 NSchap ! ! ! ! ! ip ssh version 1 ! ! spanning-tree mode pvst ! ! ! ! interface FastEthernet0/0 ip address 10.10.10.65 255.255.255.224 duplex auto speed auto !
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Encapsulation The Cisco Three-Layer Hierarchical Model Summary Exam Essentials Written Labs Review Questions Answers to Review Questions Answers to Written Lab 2.1 Answers to Written Lab 2.2 Answers to Written Lab
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Network security Security has moved to the forefront of network management and implementation. The overall security challenge is to find a balance between two important requirements: the need to open networks to support evolving business opportunities‚ and the need to protect private‚ personal‚ and strategic business information. The application of an effective security policy is the most important step that an organization can take to protect its network. It provides guidelines about the activities
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category 6‚ and fiber-optic cable have a fixed cost per circuit to buy and install‚ regardless of distance‚ of $50‚ $60‚ $120‚ and $300‚ respectively. Device Description Price each QTY Total Cisco 887VA Integrated service router $ 474.99 1 $ 474.99 Cat 5e UTP to connect hubs to router $ 60.00 4 $ 240.00 RJ11 cable Connect 887VA to internet $ 2.99 1 $ 2.99 GRAND TOTAL OF PARTS $ 717.98 This backbone will be a pretty simple setup since we are talking about such low network
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Chris Wiginton IS-3120 Unit 6 Assignment 6 Cisco-Layer 2 Resiliency Compared to HP’s IRF In order to provide speed and reliability‚ large and enterprise-level networks today are typically constructed in multiple layers. They are the access layer‚ also called the network edge layer‚ the aggregation or distribution layer; and the network core layer. The access layer is usually a mesh of network switches‚ linked to other switches in the aggregation layer‚ which in turn is linked to the core. This mesh
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goes down do you have a redundancy in place? Network designs -Bus (used thin net) -Star (switch in the middle‚ all devices connect to the switch) -Ring (token ring) OSI Model -Layer 1-4 are the only layers of the OSI model that are concerned in Cisco -Layer 5-7 are handled by the OS; Windows‚ Linux‚ etc. -Application: interfaces with the application and provides network access to the application -Presentation: generifies the data (HTML) and encrypts services -Session: starts and ends sessions/logically
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area. 2. Router: Connects LAN’s to WAN’s 3. Default Gateway: If a device does not know how to get to a destination‚ it sends data to this device. 4. Leased Line: A WAN link contracted for use by the customer. 5. Telephone Company: A WAN service provider. 6. Serial Cable: Connects a router to a CSU/DSU. 7. Channel service unit/ Data service unit (CSU/DSU): Equipment that is located in the customer’s wiring closet and provides a clocking signal to the router. 8. Data
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