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Extreme Networks Data Sheet
Summit X670V-48t 
48 Port 10 GbE Copper Switch  
with optional 40 GbE uplink
Make Your Network Mobile
Overview
The Summit® X670V-48t provides high density for 10 Gigabit Ethernet switching in a small 
1RU form factor. These switches support up to 64 10GbE ports in one system and 448 10GbE 
ports in a stacked system using high-speed SummitStack-V160, which provides 160 Gbps 
throughput and distributed forwarding. And, additionally, these switches support up to 384 
10GbE ports of 10GbE in a stacked system using high-speed SummitStack-V320, which 
provides 320 Gbps throughput and distributed forwarding.
With its versatile design, the Summit X670 provides high density Layer 2/3 switching with 
low latency cut-through switching, and IPv4 and IPv6 unicast and multicast routing to 
enable enterprise aggregation and core backbone deployment in AC-powered and 
DC-powered environments.
Summit X670 series simplifies network operation with the ExtremeXOS® modular operating 
system (OS), which is used amongst all Extreme Networks® Summit® and BlackDiamond® 
Ethernet switches. The high availability ExtremeXOS operating system provides simplicity 
and ease of operation through the use of one OS everywhere in the network.
10 Gigabit Ethernet Switching 
The Summit X670 model offers 48-port 10 Gigabit Ethernet non-blocking switching with 
10GBASE-T interfaces. Summit X670 is capable of Layer 2 and Layer 3 forwarding at up to 
714 million packets per second forwarding rate in a small 1RU form factor, enabling 
next-generation high-performance server deployment in data centers. And the X670 
supports SummitStack-V high-speed, longer distance stacking over the 10GbE ports.
SummitStack-V–Flexible Stacking Over 10 
Gigabit Ethernet
SummitStack-V capability utilizes 10 GbE ports as stacking ports, enabling the use of 
standard cabling and optics technologies used for 10GbE BASE-T RJ45 and BASE-X SFP+ 
available on the X670V-48t. SummitStack-V provides long-distance stacking connectivity of 
up to 40 km while reducing the cable complexity of implementing a stacking solution. 
SummitStack-V enabled 10 GbE ports must be physically direct-connected. SummitStack-V 
is compatible with Summit X450e, X450a, X460, X480, X650 and X670 switches running 
the same version of ExtremeXOS.
Highlights
The Summit X670V-48t switches are 
purpose-built top-of-rack switches designed 
to support emerging 10 Gigabit Ethernet 
enabled servers in enterprise and cloud data 
centers. Summit X670 helps optimize new 
server deployments with its optional, 
future-proofing 40 GbE uplink support while 
providing seamless support from existing 
Gigabit Ethernet-based servers to 10 
GbE-based high-performance servers to 
start the transition to the new virtualized 
environment.
Technical Specifications