On 21/Jun/19 10:46, adamv0025@netconsultings.com wrote:
I'd actually like to hear more on that if you don't mind.
What part, Juniper's Ethernet switching portfolio?
You actually haven't answered the question I'm afraid :) So would you connect the Juniper now Arista aggregation switch to at least two PEs in the POP (or all PEs in the POP -"fabric-style") or would you consider 1:1 mapping between an aggregation switch and a PE please?
Each edge router connects to its own aggregation switch (one or more, depending on the number of ports required). The outgoing EX4550's we used were setup in a VC for ease of management when we needed more ports on a router-switch pair. But since Arista don't support VC's, each switch would have an independent port to the edge router. Based upon experience with VC's and the EX4550, that's not necessarily a bad thing, as what you provision and what you actually get and can use are totally different things. We do not dual-home aggregation switches to edge routers; that's just asking for STP issues (which we once faced when we thought we should be fancy and provide VRRP services between 2 edge routers and their associated aggregated switches. Mark.