SD-WAN

 View Only
last person joined: yesterday 

Ask questions and share experiences with SD-WAN and Session Smart Router (formerly 128T).
  • 1.  Load Balance about Hunt

    Posted 05-29-2019 19:51
    Hi, All

    I am testing for Hunt of  LB feature. 
    The network architecture for this test scenario is as below.


    Router 1 has the service-policy which are defined  cost 10 for internet vector and cost 20 for internet 2 vector about service-A. 
    Router 2 has the service-policy which are defined  cost 20 for internet vector and cost 10 for internet 2 vector about service-B.

    The output of show load-balance command on Router1 is as below.
    The output of show load-balance command on Router12 is as below.

    I would like to use the vector internet line as primary line for service-A from Router 1 and the vector internet2 line as primary line for service-B from Router 2.

    But Router 1 and Router 2 are using the vector internet line as primary line. 

    I wonder whether my test scenario is possible or not. If yes, please check my configuration attached by me.

    Thanks,
    Sangjun



    ------------------------------
    Sangjun Bae
    Seoul
    +82-2-3469-2944
    ------------------------------

    Attachment(s)

    txt
    router1.txt   11 KB 1 version
    txt
    router2.txt   11 KB 1 version


  • 2.  RE: Load Balance about Hunt

     
    Posted 05-30-2019 09:08
    Sangjun, I looked at your configuration of routers test1 and test2. 

    So, here are two service flows I see that you can support with your configuration:
    1). tenant-test1 --> test1.test1 --> test2.test2 --> service-test2
    
    2). tenant-test2 --> test2.test2 --> test1.test1 --> service-test1​

    Now, service-test2 has policy-test2, which puts lower cost on "internet" vector.

    service-test1 has policy-test, which put lower cost on "internet2" vector.

    Therefore, service flow number (1) will use 20.20.20.0/24 LAN as its primary path between test1.test1 and test2.test2, while service flow number (2) will use 30.30.30.0/24 LAN as it primary path between test2.test2 and test1.test1.

    Also note that your configured service policies in the attached configs do not match the costs shown in "show load-balancer" screen shots.  Specifically, we should see costs 50 and 100 in your service-test1__test1 service route, but instead we see 10 and 20.

    You may want to check this discrepancy.

            service-policy     policy-test
                name                 policy-test
                lb-strategy          hunt
    
                vector               internet
                    name      internet
                    priority  100
                exit
    
                vector               internet2
                    name      internet2
                    priority  50
                exit
                session-resiliency   none
                path-quality-filter  false
                best-effort          true
            exit
    
            service-policy     policy-test2
                name                policy-test2
                lb-strategy         hunt
    
                vector              internet
                    name      internet
                    priority  10
                exit
    
                vector              internet2
                    name      internet2
                    priority  20
                exit
                session-resiliency  none
            exit​
     
    Finally, when you are obtaining "show load-balancer" output, you should run this command for "service-test1" on router "test2", and for "service-test2" on router "test1". 

    ------------------------------
    Gene Shtirmer
    Sales Engineer
    Randolph NJ
    (973) 610-5676
    ------------------------------