Forum Discussion

neo1361's avatar
neo1361
Icon for Nimbostratus rankNimbostratus
Dec 24, 2019

Redundant C4800(B4450) +vCMP

I want to design a CGN solution based on C4800 chassis.Fully redundant and active/active ports on blades.

is this possible : we can have two chassis (c4800) with multiple blades(B4450) ,one vCMP and one cluster on each chassis and still use Inter-Cluster Mirroring?

thanks

application delivery
BIG-IP
Inter-Cluster Mirroring
Super-NetOps
vcmp
  • Surgeon's avatar
    Surgeon
    Ret. Employee
    Dec 24, 2019

    You still can use HA across dissimilar peers, however for connection mirroring you need to have identical platform. This is due to different logic of DAG running on different platforms and different number of tmms

     

    https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-service-provider-sip-administration-13-1-0/4.html

     

    Do not be confused by "modes". By logic, I mean that on one platform connection goes let say to tmm1, whereas similar connection (src/dst port/ip) on the other platform may go to tmm0. Connection mirroring requires connection hitting the same tmm on both peers.

     

    In case of non-similar peer you will get next log message: 01340004:3: HA Connection detected dissimilar peer

     

    https://support.f5.com/csp/article/K13828

    • neo1361's avatar
      neo1361
      Icon for Nimbostratus rankNimbostratus
      Dec 25, 2019

      hello .

      thanks for your answer.

      can you please help me further with this soloution:

      i want to use same(similar) chassis ( c8400) and same blade(b4450) on both side and one vCMP and one cluster on each chassis and still use Inter-Cluster Mirroring.

      fully redundant and active/active with load-balance and fail over between blades and chassis.

       

      is that possible?

       

  • neo1361's avatar
    neo1361
    Icon for Nimbostratus rankNimbostratus
    Dec 25, 2019

    thanks Surgeon

    i want to use same(similar) chassis ( c8400) and same blade(b4450) on both side and one vCMP and one cluster on each chassis and still use Inter-Cluster Mirroring.

    fully redundant and active/active with load-balance and fail over between blades and chassis.

     

    is that possible?

    • Surgeon's avatar
      Surgeon
      Ret. Employee
      Dec 25, 2019

      mirroring works on similar peers only. If it is vCMP guest, then two peers must be vCMP guest running on same blades, slot, version

       

      If one guest is running on slot 1 and the second on slot 2 - mirror will not work

      If one guest is running on let say B2150 blade and the second on B2250 blade - mirror will nor work

      If one peer is vCMP guest and the second is hardware appliance - mirror will not work

       

      I hope it works for you.

       

       

       

       

       

      • neo1361's avatar
        neo1361
        Icon for Nimbostratus rankNimbostratus
        Jan 13, 2020

        I assume your answer is : yes it is posible.

        because i wrote in previous comment that both chassis and blades are the same with guests are running on same slots .

        thanks

  • SWJO's avatar
    SWJO
    Icon for Cirrostratus rankCirrostratus
    Dec 27, 2019

    before using connection mirror, you have to consider connection table`s last-hop.

     

    in A-A and using mirror can cause performance degree.

     

    maybe nat and snat doesn`t check connection table existence.

     

    I think CGN need to running routing protocol. ospf or bgp.

    • neo1361's avatar
      neo1361
      Icon for Nimbostratus rankNimbostratus
      Jan 13, 2020

      do you think that if Advanced routing module ( F5-ADD-VPR-ROUTING) purchased performance problem will be solved ?