Jump to content
Sadikhov IT Certification forums


  • Content Count

  • Joined

  • Last visited

Everything posted by demice

  1. Hi, though I have read many articles, yet I'm confused with following concepts used while writing script to establish Routing/Policy-Based VPN. I'd be thankful if you people make clear the "requirement" and "difference" between these two: 1. Set address (Address book entry) 2. Set service
  2. demice

    FIB Table

    I wonder if LFIB populates next hop label entry then why it needs to have the same label entry in FIB table? I mean isn't LFIB label entry enough for a packet to be forwarded to next hop? In my understanding, FIB is used to forward IP packet to next hop and LFIB is used to forward label to next hop. I'd be glad if someone could fix my confusion. Thanks!
  3. demice

    FIB Table

    Thats great. Bundles of thanks dear friend for taking up my question in detail. I hope you will clear my points in future as well Regards
  4. demice

    FIB Table

    Dear andr2ea_g, I m really thankful for such a detailed and focused response, yet there are a few points where I seek more elaboration/guidance. Every Edge LSR that receives the label from next hop also stores label info in FIB just like every LSR stores the received label info in its LFIB. Now for packet to be reached to far end, a series of swapped operations are done between core routers (LSRs). When the packet reaches to the next hop and LFIB table is updated with new label entry, there should be made same entry in FIB right? It means FIB can’t carry the same label info all along the way to the far end. It has the same copy of label entry was made in LFIB. Here two confusions arise: 1. Both tables (FIB and LFIB) have to have the same label info, but your statement says “as edge MPLS or core MPLS router assignation can be variable”? Isn’t there a contradiction? 2. You say “In case of LDP relationship failure, when LSR sees label entry in FIB, it will labeled the packet and forward it”. In my understanding, its LFIB table which takes decision whether to apply POP action if no label for destination is received from next hop. May be you wanted to say that in case of link failure, no LFIB table would be available and further decision would be made on the basis of FIB? 3. Please confirm my understanding: Label switching is a L2 technique and packet routing is a L3 technique. LSRs discover the next hop label via switching and the same label entry is made in FIB. The label in FIB is used to labeled IP packet so that it could be forwarded. If there is no label entry in FIB, LFIB, being a switching/L2 technique can’t forward L3 IP packet. Your vital comments are awaited which could surely helpful for me to clear my concepts.
  5. demice


    Hi friends, A very basic question which could be helpful for me to concrete my concepts. R2-----------R3 are connected over Ethernet. R3-----------R4 connected to each other over serial interface and running EIGRP. when I do "show ip protocols", i see R3 and R4 are the "gateway" to each other but R2 has no gateway. My question is can R3 be the gateway of R2? If not then please justify it. A detailed reply on this topic will be highly appreciated. Take care!
  6. demice

    ~passed~ Jncis – ER/ M/ E/ FWV/ SSL

    Hi Friends! Can anyone please tell me how could I get CBT NUGGETS or relevant videos for JNCIS-M??? I desperately need of these videos. Looking forward for kind response... Please note down my email address and kindly reply directly to me: haseebabbi@hotmail.com
  7. demice

    Discount Vouchers For All Country

    Dear! I m interested in your offer. Please let me know the details. I m in too hurry so expecting a fast reply from your side. I reside in Pakistan. Take a very good care of yourself.