Routing

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Default route selection @BGP peers

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  • 1.  Default route selection @BGP peers

    Posted 03-07-2018 01:50

    Hi,

     

    In my routing table I am receving 0/0 route from two ISP peers and one is only active. And all my network trafffic is passing through active route. Now i want to advertise some subnets to ISP2 peer as per daigram attached. what changes required to do load balancing it.Routing.jpeg



  • 2.  RE: Default route selection @BGP peers

    Posted 03-07-2018 02:24

    The default route is being used for outgoing traffic.

     

    What do you want to loadbalance here? incoming or outgping traffic ?



  • 3.  RE: Default route selection @BGP peers

    Posted 03-07-2018 02:34
    i want to use it for outgoing traffic. And I have advertised equally all prefixes in to both ISPs.


  • 4.  RE: Default route selection @BGP peers

    Posted 03-07-2018 02:39
    Ok..in that case alongwith what vincy has mentioned, you need to configure per-packet loadbalancing as well. You can refer to below docs

    https://www.juniper.net/documentation/en_US/junos/topics/topic-map/bgp-multipath.html


  • 5.  RE: Default route selection @BGP peers
    Best Answer

     
    Posted 03-07-2018 02:27

     

    Put the peering to both ISP1 AND ISP2 under a single/same group and use the below knob "multipath multiple-as"

    Both the 0/0  routes will be active 

    set protocols bgp group xx multipath multiple-as 

     

     

    If this worked for you please flag my post as an "Accepted Solution".



  • 6.  RE: Default route selection @BGP peers

    Posted 03-07-2018 02:35
    Thanks for your reply. Let me try this option and update you.