Although I am under the impression that catalyst 9K series doesn't support FLEX link, if someone knows otherwise, please correct me. Also, if my impression is correct, is there any alternate for FLEX link on Cat 9Ks? Or RSTP is the way to go? Looking to upgrade the existing 2960X switches but FLEX link is a needed feature.
the alternative to flex on cat 9000’s is object tracking (ipsla- line-protocol - route etc)
Thanks, Paul. I was wondering, whats the best convergence time we can achieve with IP SLA/Object Tracking. Would it be faster than RSTP? RSTP, in general, converges around 8 seconds, as per some documents. FLEX link converges much faster than that. As per a document on this forum, it converges within less than 50 msec.
Idea is to reduce the convergence time. Any other options?
rstp and ipsla object tracking are two different features -
rstp is a l2 feature
object tracking ipsla is L3
Depending on what you are wanting to do you also have other options for dynamic routing convergence one such feature Bidirectional Forwarding Detection (BFD)
Can you elaborate on what you want to achieve?
i honestly cannot comment on REP I am aware of the feature and know it has limited functionality as apposed to STP but as far as that never used or come across it in a production network - maybe others on this forum have more experience and exposure to it to comment and advise.
As far a convergence I assume by the above you are looking at a L2 convergence correct?