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  1. still multipath is not enabling. below is the config.

    R1#show run | section bgp
    router bgp 1
     neighbor 192.168.12.2 remote-as 23
     neighbor 192.168.13.3 remote-as 23
     maximum-paths 2
     no auto-summary
    

    BGP Table:

    R1#show ip bgp
        BGP table version is 2, local router ID is 192.168.13.1
        Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
                      r RIB-failure, S Stale
        Origin codes: i - IGP, e - EGP, ? - incomplete
    
           Network          Next Hop            Metric LocPrf Weight Path
        *  192.168.23.0     192.168.13.3                           0 23 i
        *>                  192.168.12.2             0             0 23 i
    

    Does BGP version 2 support multipath?

  2. Hi Rene,

    Some confusion please clarify the below sentence:

    We can tell BGP to “relax” its requirement of having the same AS path numbers and AS path length to only checking the AS path length and "AS Path (both AS number and AS path length)

    So, If only AS-PATH is identical/same length then we can do BGP load sharing right ?

    br//zaman

  3. Hello Zdenek

    Yes, that is correct. Only outgoing traffic, that is traffic from R1 to R2/R3 is load balanced. There is no way to load balance incoming traffic from the point of view of R1. In other words, there is no configuration within R1 that can be made in order to cause incoming traffic to take two routes to get to R1. Having said that, it is possible to configure load balancing on the side of the other AS and configure load balancing for outgoing traffic from the point of view of the other AS.

    I hope this has been helpful!

    Laz

  4. Hello,

    Just a few remarks.

    At eBGP Same AS example “R1 will will have paths” should be replaced with “R1 will have 2 paths”. R2 configuration also needs the mask for “network 192.168.23.0” under bgp 23.

    At the conclusion there is a note “the hidden bgp bestpath asp-path multipath-relax command”.
    I guess the command is bgp bestpath as-path multipath-relax.

    Shouldn’t R1#show ip route bgp at the end of iBGP example also include the 192.168.123.0/24 network?

    A (perhaps stupid) question would be if you could trick a router to bypass the as-path length also using the prepending mechanism.

    Thank you,
    Stefanita

  5. My bad: the output is for show ip route & bgp. Since 192.168.123.0/24 is also directly connected it will not be displayed in show ip route bgp (it will be displayed in show ip route). Many thanks!

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