Posts

Showing posts from May 31, 2009

Configuring EIGRP Fault Tolerance

Image
Routers Used : 3640 w/ NM-4T and NM-1FE-TX modules IOS : c3640-jk9s-mz.124-16a Objective In this lab EIGRP will be configured over a full mesh topology and then tested to observe DUAL replace a successor with a feasible successor after a link failure. Scenario The International Travel Agency wants to run EIGRP on its core, branch, and regional routers. EIGRP is to be configured and tested for its ability to install alternate routes in the event of link failure. Step 1 Build and configure the network according to the diagram, configuring EIGRP as indicated for AS 100. If using the configuration files from the previous lab, be sure to change IP addresses according to the diagram. Also, remove all loopback interfaces. Set the bandwidth for each serial interface to reflect the diagram. Use the show interface command to verify the configuration. Use ping and show ip route to verify the configuration and test connectivity between all routers. Step 2 Verify that EIGRP maintains all routes

Configuring EIGRP

Image
Routers Used : 3640 w/ NM-4T modules IOS : c3640-jk9s-mz.124-16a Objective In this lab EIGRP will be configured on three Cisco routers within the International Travel Agency WAN and the basic behaviors of the protocol will be observed. Scenario The International Travel Agency is implementing EIGRP. EIGRP must be configured at all three locations before the Dion1 headquarters can connect to the Dion2 headquarters. Step 1 Build and configure the network according to the diagram, but do not configure EIGRP yet . Use ping to test connectivity between serial interfaces. Dion1 and Dion2 will not be able to ping each other until EIGRP is enabled. Step 2 Configure EIGRP for AS 100 on all routers as the following shows: Dion1(config)#router eigrp 100 Dion1(config-router)#network 192.168.100.0 Dion1(config-router)#network 172.16.0.0 Arief(config)#router eigrp 100 Arief(config-router)#network 172.16.0.0 Dion2(config)#router eigrp 100 Dion2(config-router)#network 192.168.200.0 Dion2(config-router

Online CCNA Lab

Image
The Cisco CCNA network associate certification validates the ability to install, configure, operate, and troubleshoot medium-size routed and switched networks, including implementation and verification of connections to remote sites in a WAN. This new curriculum includes basic mitigation of security threats, introduction to wireless networking concepts and terminology, and performance-based skills. This new curriculum also includes (but is not limited to) the use of these protocols: IP, Enhanced Interior Gateway Routing Protocol (EIGRP), Serial Line Interface Protocol Frame Relay, Routing Information Protocol Version 2 (RIPv2),VLANs, Ethernet, access control lists (ACLs). 1 Console Login 2 Router Configuration 3 Examine the Router 4 Copy to a TFTP server 5 Copy from TFTP server 6a Clear the backup config 6b Saving the backup configuration 7 Copy to NVRAM 8 Initial router configuration 9 Initial Switch Configuration 10 RIP routing 11 IGRP routing 12 Create Accesslist 13 IPX Access List

Connecting to Cisco Router console port using Linux

Image
I tried to connect my Ubuntu laptop to Cisco Router console port. I did successfully. What you will need: A roll-over cable (Cisco Console Cable). These are usually RJ-45 on the router side and serial on the PC side. If your laptop doesn’t have a serial port (like mine) you can get a 9-pin D-sub serial to USB cable. I got the BAFO USB Serial to DB9. I bought it in Ambassador Mall Kuningan Jakarta last night. Get Connected: Connect all the cables: USB -> Serial -> Crossover –> Console Port Download and Install Putty . root@dion-laptop:~# apt-get install putty Make sure that the USB to serial cable is recognized. root@dion-laptop:~# dmesg | grep tty [ 0.004000] console [tty0] enabled [ 1.923508] tty ptyx4: hash matches [ 131.637904] usb 3-2: pl2303 converter now attached to ttyUSB0 [ 173.768300] type=1503 audit(1243914954.561:5): operation="inode_permission" requested_mask="w::" denied_mask="w::" fsuid=0 name="/dev/ttyUSB0" pid=