Sunday, January 10, 2010

Networking Lab Series: LAB 1 PART 2

This is the second part of the Networking Lab Series: LAB 1.

Lets start with some review questions and analysis from PART 1:
  • What happened when you did the mutual redistribution CE to PE between EIGRP and BGP?
    • Besides the "redistribute bgp xxx" under EIGRP, What was required for EIGRP to advertise the routes learned from BGP into the EIGRP domain?
      • REASONING:
        • EIGRP, unlike other routing protocols, use a composite metric made of 5 metrics:
          1. Bandwidth (minimum along path)
          2. Delay (cumulative along path)
          3. Reliability
          4. Load
          5. MTU

        • When redistributing from other protocols you will need specify the metrics
  • What happened when you did the mutual redistribution CE to PE between RIP and BGP?
    • Besides the "redistribute bgp xxx" under RIP, What was required for RIP to accept all the routes?
      • REASONING:
        • RIP is a distance vector protocol. Meaning it counts hops. After 15 hops, number 16 means infinite, and the route is discarded.
        • When redistributing from other protocols, if the metric exceed 15, you have to specify a better metric in order for the route to be accepted.
Now that we have that clear, lets continue with the final tasks for LAB 1.

Task 3: IGP Optimization
  • Configure OSPF to set the "Do Not Age" flag on all locally generated LSAs between PE1 and P1
  • Configure ISIS for the fastest possible detection of neighbor lost
  • Configure ISIS to send the minimum amount of updates after a change in the database

Task 4: IGP and EGP Security
  • Configure OSPF Area 0 with MD5 authentication, password CISCO, between ASBR1 and P1 and without password between PE1 and P1.
  • Configure RIP to use authentication between CE1 and PE1 using password CISCO
  • Configure ISIS with an area 2 password using password CISCO
  • Configure EIGRP with MD5 password CISCO between PE2 and CE2
  • Configure BGP with MD5 password CISCO

Task 5: EGP Fine Tuning
  • Configure the EBGP session to converge as quickly as possible in the event of failure
  • Configure BGP peering between ASBR1 and ASBR2 such that AS234 and AS567 only advertises its loopbacks and customers loopbacks to the other carrier
  • Configure BGP ASBR2 to not initiate the BGP handshake with ASBR1. Only ASBR1 should send the initial handshake

Task 6: Multicast AS234
  • Configure pim sparse mode Multicast inside AS234
  • P1 loopback interface should be used as the RP
  • Do not allow for dynamic advertisement of RP information

Task 7: Multicast AS567
  • Configure pim sparse mode Multicast inside AS567
  • P2 loopback interface should be used as the RP
  • BSR should be used to distribute the RP information

Task 8: Multicast BGP
  • Configure ASBR1 and ASBR2 to negotiate the multicast address family over eBGP
  • Configure AS234 RP and AS567 RP to exchange information on active multicast sources
  • Configure the RPs only to accept SA messages for groups in the range

Task 9: Multicast at CE
  • Configure pim-sparse multicast between PE1 and CE1, and PE2 and CE2
  • Join the multicast group in CE1 and make sure CE2 is able to reach it

Well, hope you have fun up to this point. This is the last part of this lab.



  1. I have recommended this blog to all my technology lover friends. They have become a regular follower and are always discussing the amazing posts that are shared here.

  2. Your site has a lot of useful information for myself. I visit regularly. Hope to have more quality items.
    - 2 player games

  3. Your site fantastic, superior quality succeed... Most probably various should realize others despite that they don't take time to advise you.
    HydroMax X-Series

  4. The Pandemic outbreak has caused too much trouble for the online buyers and big vendors like Amazon. During this Covid-19, Amazon is not the only e-commerce store suffering to increase their shopify app development sales, a majority of other web stores are testing their patience

  5. The main reasons why you face these issues is the cut throat competition which increase the number of such websites which call themselves as our competitors, but lack the expertise and skill which we possess. These sites at times look very attractive, very luring and make such sincere promises which make you ultimately fall for them. With similar kind of names, website structure etc. they make a person think that it could be the website he/ she always wanted to visit.
    Satta fix jodi

  6. thanks for share this blog .
    this blog is gret article
    home tutor in lahore

  7. Fats may contribute to heart condition attacks, and/or a method to scale back saturated fat intake in treats is by making a substitution for the oil.Unsweetened applesauce are often substituted. coffee bag manufacturer

  8. Great article, This is really helpful for a newbie like me. One thing I am experienced in is creating custom logos so if you want one check below:
    buy a logo

  9. I am very happy after visiting your website with very useful information. I am from one of the digital marketing agency... To visit my agency click on link Visitdigitalguru

  10. Its helpful for me and i everyone to try this
    Online market trading

  11. colocation and connectivity services at our data centre facilities in Sydney and Tasmania, Contact for Colocation Services Australia

  12. Thanks for sharing informative content…Find noida software company to know more and Contact us on given no.…

  13. Thanks for sharing information with us…satisfied after visiting your blog…. Learn the latest trends & their practical application by experts with us…you can contact us click on
    Visit ISMT India

  14. This content material is written very well. Your use of formatting when making your factors makes your observations very clear and clean to apprehend. Thanks.

    law dissertation Writing Service