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Ok, 10Gbps uplikns, that is massive bandwitdh... ;)) I still recommend 1Gbps to each switch if there isnt a very good reason for 10Gbps.And yes WS-C3750G-48PS-S is a good choice. Powerconsumption increase with PoE but not that much.But depending on b...
Ive seen this in our CNR-server. In our case it is when using BPDU-filter on switchports.Then sometimes (not often) the VLAN is not propagated on the specific switchport. That happens when the customer is offline for a longer period. When he returnes...
As you said yourself, the requirements are a bit over the top. 3550 is not a choice since they are not in production anymore, the successor 3560 might fit. Then u should go for Cisco Catalyst 3560G-48TS (48 10/100/100 + 4SFP)But I would suggest Cisco...