We're Sorry, Full Content Access is for Members Only...

If you like to keep on reading, Become a Member Now! Here is Why:

  • Learn any CCNA, CCNP and CCIE R&S Topic. Explained As Simple As Possible.
  • Try for Just $1. The Best Dollar You've Ever Spent on Your Cisco Career!
  • Full Access to our 581 Lessons. More Lessons Added Every Week!
  • Content created by Rene Molenaar (CCIE #41726)

 

295 New Members signed up the last 30 days!

satisfaction-guaranteed

100% Satisfaction Guaranteed!
You may cancel your monthly membership at any time.
No Questions Asked!

Tags:


Forum Replies

  1. Hi Hamood,

    That's right, if you source eBGP from the loopback interfaces then you'll need multihop.

    The problem with the R1-R2-R3 scenario is that R2 will never learn about any prefixes, when R1 tries to reach a network behind R3 (or R3 wants to reach something behind R1) then R2 will receive an IP packet with a destination it doesn't know about.

    If you really had to use eBGP between R1 and R3 then a GRE tunnel might be a solution...

    Rene

  2. rtsask says:

    Hello Rene,

    If we use static routes then why we use BGP? couldn't we advertise the subnets with network command in BGP?

    Thanks,
    -Rouzbeh

  3. Hi Rene,

    Why you enable the directly connected check again when you increase the TTL ?

    thanks.

  4. thanks Rene I understood that we have tow options to use, but in the first option they will not become neighbor even though “disable-connected-check” since by default the TTL for eBGP is 1 so finally we need to increase the TTL if we use the first option ? right ?

  5. Sara,
    I am not quite following what you are asking. Are you asking why you would have a neighbor statement, but not a corresponding network statement? If so, the most common example of this would be a company that wants to form a neighbor relationship with its ISP's BGP router in order to get routes in--usually just a default route (if there is only one exist point), or sometimes all routes within the ISP's autonomous system. In either case, there might be no need for the customer to advertise anything out to the ISP.

    If I have misunderstood your question, please clarify.

    Thanks,
    Andrew

48 more replies! Ask a question or join the discussion by visiting our Community Forum