On Thu 2017-Oct-26 18:35:35 +0530, Mehul gajjar <mdgaj...@gmail.com> wrote:
Dear all,Can anybody give me knowledge how Spanning tree behaviour in spine/leaf data center architecture where qfx as a spine and leaf too.
I haven't done spine/leaf networks with QFX, but in a general a spine & leaf setup should be L3 for interswitch links, so any STP should be local to a given switch. i.e. you may have STP domains on a leaf's local L2 domain, so on its edge ports / server-facing links, but that should not extend upwards in the topology unless I'm missing something.
Here I'm just talking about a vanilla spine & leaf setup, not anything Juniper-specific e.g. QFabric or VCF or whatnot.
If you're doing an overlay like VXLAN over top of the L3 underlay, then how loops are managed would be specific to the overlay, with the addendum that even if you manage to form a loop in the overlay somewhere/somehow, the TTLs in the L3 underlay should still have looped frames in the overlay TTL out.
I'd be curious about more specific details from folks running QFX in prod in this type of setup.
-- Hugo Slabbert | email, xmpp/jabber: h...@slabnet.com pgp key: B178313E | also on Signal
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