Routing

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Ask questions and share experiences about ACX Series, CTP Series, MX Series, PTX Series, SSR Series, JRR Series, and all things routing, including portfolios and protocols.

  • 1.  Best Design for Two J6350 Routers with BGP Active/Backup Two ISP

    Posted 05-27-2011 17:22

    Hi Guys,

     

    I have two J350 routers and i need to configure BGP active/Backup with 2 ISP. I just want to know what is the best practise for this setup.

     

    For the trust interface i need to use JSRP or VRRP.

     

    For EBGP setup how can i configure the Active/Backup with two diffrenet ISP.

     

     

    what is the recommended version must be installed on the routers.

     

    Please could you please share any examples for same scenrio .

     

     

    Thank you

    Ahmad

     



  • 2.  RE: Best Design for Two J6350 Routers with BGP Active/Backup Two ISP

    Posted 05-27-2011 23:16

    A lot of assumptions here, so this may or may not be relevent to your environment.

     

    Generally ISP connections are EBGP to different BGP ASs.  Place the routers in packet-mode and establish an IBGP connection between them so that they're redundant.

     

    On router "A" apply the following:

    • Apply LocalPreference 200 to all imported routes from the ISP.

    On router "B" apply the following:

    • Apply as-prepend to your advertisements to the backup ISP.


  • 3.  RE: Best Design for Two J6350 Routers with BGP Active/Backup Two ISP

    Posted 05-28-2011 00:18

    Hi Doug,

     

    Thanks for your quick response.

     

    I can understand that i dont need to use JSRP( Chassis Cluster) between the routers so i will use VRRP on the trust side.Also what is the recommended version to be installed on the routers.

     

    Do you have any examples for such setups like this .

     

     

    Thank you

    Ahmad Alqureneh



  • 4.  RE: Best Design for Two J6350 Routers with BGP Active/Backup Two ISP
    Best Answer

    Posted 05-29-2011 11:06

    I don't understand why you need JSRP or VRRP.  Just use p2p Ethernet links and OSPF.  Inject a condition 0/0 route into your area with a route policy.  This way downstream routers have two paths for the 0/0 route.