Configuring EIGRP

By arfs -

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)#network 172.16.0.0
Step 3
  • After enabling EIGRP on each of the three routers, verify the operation using the show ip route command on the Arief router. The Arief router should have routes to all networks.
    Arief#show ip route
    (output omitted)
    Gateway of last resort is not set

    172.16.0.0/30 is subnetted, 2 subnets
    C 172.16.224.4 is directly connected, Serial0/1
    C 172.16.224.0 is directly connected, Serial0/0
    D 192.168.200.0/24 [90/2297856] via 172.16.224.5, 00:15:29, Serial0/1
    D 192.168.100.0/24 [90/2297856] via 172.16.224.1, 00:19:55, Serial0/0
  • The Arief router received EIGRP routes that are internal to the EIGRP domain, 192.168.100.0 and 192.168.200.0. Internally learned EIGRP routes are denoted by a D.
Step 4
  • Now that EIGRP is configured, use show commands to view EIGRP neighbors and topology tables on the Arief router.
    Arief#show ip eigrp neighbors
    IP-EIGRP neighbors for process 100
    H Address Interface Hold Uptime SRTT RTO Q Seq
    (sec) (ms) Cnt Num
    1 172.16.224.5 Se0/1 14 00:22:00 195 1170 0 7
    0 172.16.224.1 Se0/0 14 00:23:02 238 1428 0 6
  • To view the topology table, issue the show ip eigrp topology all-links command.
    Arief#show ip eigrp topology all-links
    IP-EIGRP Topology Table for AS(100)/ID(172.16.224.6)

    Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
    r - reply Status, s - sia Status

    P 192.168.100.0/24, 1 successors, FD is 2297856, serno 3
    via 172.16.224.1 (2297856/128256), Serial0/0
    P 172.16.224.4/30, 1 successors, FD is 2169856, serno 2
    via Connected, Serial0/1
    P 172.16.224.0/30, 1 successors, FD is 2169856, serno 1
    via Connected, Serial0/0
    P 192.168.200.0/24, 1 successors, FD is 2297856, serno 8
    via 172.16.224.5 (2297856/128256), Serial0/1
  • To view more specific information about a topology table entry, use an IP address with the show ip eigrp topology command:
    Arief#show ip eigrp topology 192.168.200.0
    IP-EIGRP (AS 100): Topology entry for 192.168.200.0/24
    State is Passive, Query origin flag is 1, 1 Successor(s), FD is 2297856
    Routing Descriptor Blocks:
    172.16.224.5 (Serial0/1), from 172.16.224.5, Send flag is 0x0
    Composite metric is (2297856/128256), Route is Internal
    Vector metric:
    Minimum bandwidth is 1544 Kbit
    Total delay is 25000 microseconds
    Reliability is 255/255
    Load is 1/255
    Minimum MTU is 1500
    Hop count is 1
  • Finally, use show commands to view key EIGRP statistics. On the Arief router, issue the show ip eigrp traffic command to see the EIGRP packet types. Then enter the show ip eigrp interfaces command.
    Arief#show ip eigrp traffic
    IP-EIGRP Traffic Statistics for AS 100
    Hellos sent/received: 688/674
    Updates sent/received: 12/7
    Queries sent/received: 2/1
    Replies sent/received: 2/2
    Acks sent/received: 3/9
    SIA-Queries sent/received: 0/0
    SIA-Replies sent/received: 0/0
    Hello Process ID: 136
    PDM Process ID: 135
    IP Socket queue: 0/2000/3/0 (current/max/highest/drops)
    Eigrp input queue: 0/2000/3/0 (current/max/highest/drops)

    Arief#show ip eigrp interfaces
    IP-EIGRP interfaces for process 100

    Xmit Queue Mean Pacing Time Multicast Pending
    Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
    Se0/0 1 0/0 238 0/15 1027 0
    Se0/1 1 0/0 195 0/15 823 0
Download

Popular posts from this blog

Cisco binary image unpacker

By arfs -
Image
Cisco binary image unpacker is a software that allows you to unpack the IOS and ASA images. Follow this steps to use this software for GNS3. With this way the Router loading process can be faster. This is useful for those of you that do start and stop Router frequently. Donwload Cisco image unpacker 0.1  for Windows. Extract thi zip file to your specific folder.. Copy the IOS file to this folder, for example "c3640-jk9s-mz.124-16a.bin". On windows command prompt, type the following command: "unpack c3640-jk9s-mz.124-16a.bin" (without ""). The output file stored in temporary folder, in my case "C:\Documents and Settings\dion\Local Settings\Temp". Open the folder and you will find the unpacked file "C3640-JK.bin", file size is about twofold. Copy "C3640-JK.bin" to your IOS folder. Your can also rename the file to "c3640-jk9s-mz.124-16a(unpacked).bin" Open GNS3, On the Edit menu, choose IOS image and hyper...
Read more

Connecting to Cisco Router console port using Linux

By arfs -
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=...
Read more

Examining the DR/BDR Election Process

By -
Image
Routers Used : 3640 w/ NM-1FE-TX IOS : c3640-jk9s-mz.124-16a Objective : In this lab, observe the OSPF DR and BDR election processing using debug commands. Then assign each OSPF interface a priority value to force the election of a specific router as a DR. Scenario The backbone of International Travel Agency’s enterprise network consists of three routers connected using an Ethernet core. Asterix1 has more memory and processing power than the other core routers. Unfortunately, other core routers are continually elected as the DR under the default settings. In the interest of optimization, ensure that Asterix1 is elected the DR, because it is best suited to handle associated extra duties, including management of Link State Advertisements (LSA) for Area 0. Investigate and correct this situation. Step 1 Build and configure the network according to the diagram. Use the configuration files from the previous lab if available . Configure OSPF on all Ethernet interfaces. A switch or hub is req...
Read more