Switching

Expand all | Collapse all

High availablibity questions

  • 1.  High availablibity questions

    Posted 11 days ago
    I have the following topology:


    In my understanding, I have three options to lag the leaf node.
    1.  configured two spines to be a virtual chassis
    2.  connect two spines via EVPN/vXLAN
    3. MC-LAG

    Anyone can coach me what are the pros and cons for each of them.  Or they are not all selective ?

    thanks a lot !!


  • 2.  RE: High availablibity questions

    Posted 11 days ago
    Hi,

    1.) VC = active/backup RE
    2.) EVPN = active/active but need more knowledge
    3.) MC-LAG = active/active but need more knowledge.


    The main point here what u want to design? Is it just small network enterprise or DC? U dont need do EVPN-VXLAN if your network is small.

    Thanks


  • 3.  RE: High availablibity questions

    Posted 11 days ago
    thanks a lot !!

    We use some VC for not critical networks. But we had a couple of times stuck with VC issues.  It took a long time to recover some of members. So almost give up with VC.
    I like to know what benefits from MC-LAG over VC.
    My first preference is EVPN/vXLAN, as it is L3 approach.

    I like to hear any real life experiences with these technology. We are currently using both VC and EVPN, not MC-LAG yet.


  • 4.  RE: High availablibity questions

    Posted 11 days ago
    Hi,


    Previously i have implement MC-LAG in two different scenario. IGW and DC environment.

    On MC-LAG to prevent split brain then u need OOB as backup live detection. Also on MC-LAG u will need to to event script to clear arp especially when the other device use virtual ip method such as SRX Cluster.

    Thanks


  • 5.  RE: High availablibity questions

    Posted 11 days ago
    thanks a lot !!

    To me, MC-LAG adds lots of complexity, right ?


  • 6.  RE: High availablibity questions

    Posted 11 days ago
    Hi,
    If u ask me the complexity sequence as below.

    1.) VC - not complex
    2.) MC-LAG - medium
    3.) EVPN-VXLAN - complex




  • 7.  RE: High availablibity questions

    Posted 11 days ago
    thanks a lot !!