L3 Customer Access Layer

Equities/Options employs both 1G and 10G dedicated switches that serve as the network access point for customer connections. The number of switches at this layer is largely based on customer demand. Uplinks use the vendor default hashing algorithm.

Table 1. L3 Customer Access Layer
DC Location	Quantity	Customer Bandwidth	Uplink to DC Core	Make	Model	Switching Mode
NY4	2	1G	2x100G (Core 3&4) 2x100G (Core 1&2)	Arista	DCS-7280SR3-48YC8	Store-and-Forward
NY5	2	1G	2x100G (Core 3&4) 2x100G (Core 1&2)	Arista	DCS-7280SR3-48YC8	Store-and-Forward
NY6	2	1G	2x100G (Core 3&4) 2x100G (Core 1&2)	Arista	DCS-7280SR3-48YC8	Store-and-Forward
NY4	8	10G	2x100G (Core 1&2) 2x100G (Core 3&4)	Arista	DCS-7050SX3-96YC8	Cut-Through*
NY5	6	10G	2x100G (Core 1&2) 2x100G (Core 3&4)	Arista	DCS-7050SX3-96YC8	Cut-Through*
NY6	2	10G	2x100G (Core 1&2) 2x100G (Core 3&4)	Arista	DCS-7050SX3-96YC8	Cut-Through*

^*Switching mode is effectively store-and-forward one way due to speed change from 10G to 100G.

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L3 Customer Access Layer