bitmindframes

Bitmindframes forum now open!

Sat, 22 Nov 2008 22:28:58 +0000

We started this site out as a way to help others study for their ccna certification and it will now expand into a community. We are looking for moderators for the forum as well as persons with technical experience that can write articles or basic tutorials. The forum is open to anyone and is used for [...]

Creating a jumpstart server, and flash archive.

admin — Sun, 09 Nov 2008 00:06:09 +0000

SETTING UP BOOT & INSTALL SERVERS JumpStart clients install the Solaris Operating System from the installation image. For example, if you spool the Solaris 10 Operating System into a directory called /export/jumpstart, the installation image would be located in the /export/jumpstart/Solaris_10/Product directory. #cd /cdrom/cdrom0/s0/Solaris_10/Tools 1. First we use the setup_install_server command to install the software onto [...]

DTP Dynamic Trunking Protocol

admin — Sat, 08 Nov 2008 22:13:53 +0000

Bitmindframes cisco study guides DTP Dynamic Trunking Protocol Trunk negotiation is managed by the Dynamic Trunking Protocol (DTP), which is a Cisco proprietary Point-to-Point Protocol. These various modes are configured using the switchport mode interface command Switch trunk interfaces support different trunking modes. Access Dynamic desirable (default mode on Catalyst 2950 and 3550) Dynamic auto Trunk Non-negotiate dotq-tunnel (Not an option on the Catalyst 2950.) Using [...]

Distance Vector Routing Protocols

admin — Sat, 27 Sep 2008 02:40:16 +0000

Distance Vector Routing Protocols The meaning of Distance Vector: A router using distance vector routing protocols knows 2 things: Distance to final destination. Vector, or direction, traffic should be directed. RIP uses hop count as the metric for path selection. If hop count for a network is greater then 15, RIP cannot supply a route to that network. IGRP/EIGRP use Bandwidth, delay, [...]

Dynamic Routing Protocols & router password recovery

admin — Sat, 06 Sep 2008 05:00:08 +0000

Dynamic Routing Protocols: Dynamic routing helps the admin overcome the time-consuming process of configuring and maintaining static routes. Routing protocols have been used since the early 80s. Routing algorithms have been in use since 1969. Some function(s) of Dynamic Routing Protocols: Dynamically share information between routers. Automatically update routing table when topology changes. Determine best path to a destination. The purpose [...]

Static Routing & CDP

admin — Sat, 06 Sep 2008 04:46:23 +0000

Introducing the Topology: The show controllers command reveals whether the cable is DCE or DTE. #show controllers serial 0/0/0 Interface serial0/0/0 Hardware is powerQUICC MPC860 DCE v.35, no clock Interfaces: By default all Serial and Ethernet interfaces are down. The routing table will be empty. Debugging: Allows us to watch changes a router performs in real time. For example, to observe routes [...]

Configuring a catalyst switch

admin — Tue, 26 Aug 2008 23:32:10 +0000

Configuring a Web Interface: Switches have web-based config tools that require an onboard HTTP server: Web browser GUI. Security Device Manager (SDM). IP Phone and Telephony apps. HTTP services ? security hole ? optional authentication. If many users access HTTP services you may require a separate authentication server. AAA and TACACS can be used to validate user credentials, (robust). A less complex [...]

Switching in an Ethernet network

admin — Tue, 26 Aug 2008 23:22:48 +0000

Key Elements of Ethernet Networks: CSMA/CD – Only used with half-duplex (hubs). Full-duplex switches do not use CSMA/CD. Ethernet signals are sent to every host in the LAN. Carrier Sense: All devices must listen before transmitting. If signal detected (CS), wait before transmitting. If no tfc detected, can transmit. While transmitting – must listen for collisions. Multi-access: If 2 devices transmit at the [...]

Intro to Routing & Packet Forwarding

admin — Tue, 19 Aug 2008 05:32:32 +0000

Routing & Packet Forwarding Routing Protocols & Concepts Router as a Computer: Computers that specialize in sending packets over the data network. Responsible for interconnecting networks. Routers are the network center. Generally have a min of 2 connections: WAN connection (Connection to ISP). LAN connection. In addition to packet forwarding, routers provide other services as well. A router connects multiple networks. This means that [...]

LAN Design & Hierarchical Network Model

admin — Fri, 15 Aug 2008 18:50:31 +0000

LAN Design: The Hierarchical Network Model: CCNA focuses on networks for SMBs (small, medium businesses). A hierarchical design model is recommended. Easier to manage and expand. Problems are solved more quickly. Hierarchical design divides the network into 3 layers. Core, (CL). Distribrution, (DL). Access, (AL). Each layer provides specific functions. This “modularity” facilitates scalability and performance. Access Layer, (AL): lowest Interfaces with the end [...]