Dual Homed ISP - BGP for failover - IP Block Routing questions.

Discussion in 'Software' started by anonk, Mar 31, 2011.

  1. anonk

    anonk

    Joined:
    Mar 31, 2011
    Messages:
    1
    Hello,

    I have a dual homed ISP Setup:

    R1---> ISP1

    R2----> ISP2

    NO iBGP between them.

    The Firewall behind R1 & R2 is setup for failover (Active/Standby). So R1 and R2 have HSRP on their LAN Interfaces - one HSRP Group fro Each ISP.

    I have a PUBLIC IP Block, say 4.5.6.0/24, which is being advertized over BOTH R1 & R2, but R1 being a preferred route when both links are active (using AS-Prepend for that IP Block, on R2). Idea is, when R1-ISP1 link Fails, the IP block 4.5.6.0/24 msut be reachable over R2-ISP2 Link (link with a longer AS-Path).

    But, when R1-ISP1 link fails, the route for 4.5.6.0/24 does NOT reconverge- The Upstream ISPs (confirmed via a looking glass site)- are still sending traffic over to ISP1, and it dies at R1-ISP1 Link.

    Any other emthods how this can be acheived?

    Thanks!
    anonk, Mar 31, 2011
    #1
    1. Advertising

Want to reply to this thread or ask your own question?

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. anybody43@hotmail.com

    Dual homed MS Windows on L2 network

    anybody43@hotmail.com, Mar 4, 2005, in forum: Cisco
    Replies:
    0
    Views:
    616
    anybody43@hotmail.com
    Mar 4, 2005
  2. masterbullfrog

    Cisco Dual ISP's VPN Failover

    masterbullfrog, Feb 15, 2007, in forum: Cisco
    Replies:
    0
    Views:
    954
    masterbullfrog
    Feb 15, 2007
  3. edavid3001@gmail.com

    PIX dual homed for internal routing

    edavid3001@gmail.com, Jun 28, 2007, in forum: Cisco
    Replies:
    0
    Views:
    555
    edavid3001@gmail.com
    Jun 28, 2007
  4. mhoppes@gmail.com
    Replies:
    7
    Views:
    867
    mhoppes@gmail.com
    Aug 22, 2007
  5. Giuen
    Replies:
    0
    Views:
    871
    Giuen
    Sep 12, 2008
Loading...

Share This Page