The ATS1927 is an AdvancedTCA Base switch and Fabric breakout board. The Base features a fully managed 1G Ethernet switch with 10G uplink ports. The Fabric converts 10GBase-BX4 from the backplane to SFP+ sockets on the faceplate.

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ATS1927 At-A-Glance
Base Fabric	10G and 1G Ethernet
Extended Fabric	10G Ethernet
Base Fabric Ports	(24) 1G Ethernet (3) 10G Ethernet
Extended Fabric Ports	(12) 10G Ethernet Front Panel SFP+ Connectors
Protocol Layers & Support	Base Only: Layer 2 Switching Layer 3 Routing Layer 2 and Layer 3 Multicast See Datasheet for More, or ES3 Datasheet for Full List
	Full IPv6 Support on Base and Extended Fabrics
	Fully Managed with SNMP, Serial, Web Interface, Telnet/SSH
Base Management Stack [L2 & L3 Protocol Support]	DTI's ES3 Network Stack
PICMG	PICMG 3.1 Option 9

Related Reading:
:: AdvancedTCA: Switching, A Change in Focus
:: AdvancedTCA: Switching, Layer 2 Failover Feature
:: AdvancedTCA: Lossless Ethernet, Advancements in Next Generation Networks
:: AdvancedTCA: Ethernet Protocols Primer
:: AdvancedTCA: Gotchas, Welcome to the Jungle