Page 1
Key Specications
C-250
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
Data Sheet
• Full featured Wi-Fi 6, 12 Stream AP
• 8x8:8 5GHz Radio + 4x4:4 2.4 GHz Radio
• Up to 1.1 Gbps throughput for 2.4 GHz radio
• Up to 4.8 Gbps throughput for 5 GHz radio
• Additional 2x2 dual band radio for
dedicated RF and WIPS scanning
• Integrated BLE 4.1
• Integrated omnidirectional antennas
• 20/40/80/80+80/160 MHz channel width
support
• 2x 2.5 Gigabit Ethernet ports
• Support for UL/DL MU-MIMO
• Support for UL/DL OFDMA
• 802.3bt PoE support
• 802.3at support with reduced function
• Wall and ceiling mounting options
Key Features
• Distributed Data Plane architecture
• Zero-touch deployment through automatic
cloud activation and configuration
• Cloud or on premises management plane
options
• Operating modes for dedicated access,
dedicated security or dual-mode
• Support for up to 8 distinct SSIDs per radio
• Integrated firewall, traffic shaping, QoS and
BYOD controls per SSID
• Dynamic RF optimization through smart
steering, band steering and optimal
channel selection
• Application visibility through layer 7 deep
packet inspection
• Automated device access logging
• Patented Marker Packet
rogue AP detection and classification
• Wired VLAN monitoring for “No-WiFi” zone
enforcement
• Third party analytics integration with realtime data transfer
• Self-healing wireless mesh networking
• Versatile 3rd radio for WIPS, Spectrum
Analysis, Scanning and Client Connectivity
Tests
TM
technology for
Aesthetic Design and High Performance
Arista C-250 is an enterprise-grade, 12 stream Wi-Fi 6 AP with dual concurrent
5 GHz and 2.4 GHz band radios supporting 8 stream 802.11a/n/ac/ax, 4 stream
802.11b/g/n/ax and data rates of up to 4.8 Gbps and 1.4 Gbps, respectively.
C-250 Capabilities
C-250 provides Gen 2 Wi-Fi 6 performance improvements to deliver higher
capacity and more ecient use of the available spectrum. It provides industry
leading user experience and throughput in high density environments. Uplink/
Downlink OFDMA channelization allocates bandwidth more eciently across
client devices to provide a better user experience. The ability to serve multiple
clients simultaneously through UL/DL MU-MIMO further improves system
capacity and user experience. With support for eight spatial streams in 5GHz, the
C250 delivers truly unprecedented throughput and client capacity. C-250 is ideal
for critical, high-density networks serving a high volume of diverse clients and
applications. Common deployment scenarios include large schools, large remote
oces, auditoriums, meeting rooms, and enterprise campuses.
Arista CloudVision® Managed Wi-Fi
The C-250 is an Arista CloudVision Wi-Fi managed platform. Available as a cloud
service or on prem management platform, CloudVision Wi-Fi leverages a purpose
built cloud architecture delivering cloud grade analytics and automation to
enterprise Wi-Fi networks. CloudVision ensures high reliability, scalability, security
and cost eectiveness.
Versatile, multipurpose 3rd Radio
C-250 comes with a versatile multipurpose 2x2:2 dual band 802.11ac third radio
that provides:
• Industry leading, continuous WIPS and spectrum analysis
• Better RRM decisions from continuous spectral visibility
• Network availability and performance assurance by On-demand and
scheduled client connectivity test
Arista C-250
Page 2
C-250
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
Data Sheet
Access
C-250 provides Wi-Fi networks that require less time and resources to deploy and maintain compared to traditional devices, resulting in
signicant cost savings.
• Plug and play provisioning using either Cloud or On-premise deployments - Arista Access Points take less than two minutes to activate
and congure after connecting to the cloud
• Support for up to eight individual SSIDs per radio providing maximum exibility in network design
• Network controls like NAT, Firewall and QoS implemented at the Access Point, ensuring faster and more reliable networks
• Continuous scanning of all 2.4 GHz and 5 GHz channels by a dedicated 2x2 third radio provides a dynamic, 360 degree view of the RF
environment to assist in RF optimization and client handling
• Network availability and performance assurance using the third radio as a client to conduct on-demand and scheduled connectivity and
performance tests
• Smart steering addresses sticky client issues by automatically pushing clients with low data rates to a better access point
• Band steering manages channel occupancy, pushing clients to the 5 GHz channel for optimal throughput
• Smart load balancing distributes load evenly across neighbouring APs to optimize the use of network resources
• Arista Wi-Fi’s distributed data plane architecture continues to serve users and secure the network even if connection with the
management plane is interrupted
• Interference avoidance from LTE/3G small/macro cells in commonly used TDD/FDD frequency bands
Security
C-250 oers complete visibility and control of the wireless airspace ensuring network integrity while actively protecting users without
manual intervention.
• C-250 is equipped with industry leading fully integrated wireless intrusion prevention capabilities
• Multifunction third radio provides uninterrupted spectrum scanning or client emulation for always on security coverage alongside
dedicated 2.4G/5G client radios.
• Arista’s patented Marker PacketsTM help accurately detect rogue access points on any network while minimizing false positives
• Third radio used as a dedicated security sensor for 24x7x365 scanning and automated over-the-air (OTA) prevention
• Deterministic rogue AP detection and prevention by monitoring all WiFi and non-WiFi VLANs.
• Over-the-air and on-the-wire prevention techniques assure automatic and reliable threat prevention to keep unauthorized clients
and rogue APs off the network without impacting authorized connections.
• Access Points autonomously scan for wireless threats and enforce security policy even if disconnected from the cloud management
plane
• VLAN monitoring enables a virtual connection to non-WiFi networks for complete network rogue detection and prevention
Analytics
The C-250 collects telemetry on connected and unconnected WiFi clients and supports immersive guest network experiences that help
Arista’s customers develop and reinforce the relationship with their end customers.
• Reports of customer footfall, demographic, loyalty and other analytics provide insightful and actionable information.
• Supports proximity marketing programs that trigger when certain devices are present, which includes automatic messaging vis MMS
in-browser notications and real time notications sent to 3rd party systems that alert to the presence of enrolled devices.
Page 3
Physical Specications
C-250
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
Property Specication
Physical Dimensions 230mm x 230mm x 49mm/9.1” X 9.1” X 1.9”
Weight 1.390kg / 3 lb
Operating Temperature 0
Storage Temperature -40oC ~ +70oC (-40oF ~ +158oF)
MTBF
Humidity 0-95% non-condensing
o
C ~ +40oC (+32oF ~ +104oF)
191,367 hr @ 40oC
333,286 hr @ 25oC
Data Sheet
Power Consumption
Chipset
Processor and RAM 1 GB RAM and 512 MB Flash
Port Description Connector Type Speed/Protocol
Power 12V DC 3.3 A
LAN1
LAN2
Console
2.5 GbE, 802.3bt compliant
PoE, MACsec capable*
2.5 GbE, 802.3bt compliant
PoE, MACsec capable*
Establish ‘cong shell’
terminal session via serial
connection
34.4 W (max) / 14.0 W (min) / 28.6 W (avg)
Qualcomm IPQ8078 2.2GHz quad core ARM processor
with QCN5054 x2 and QCN5024
QCA9882 (multipurpose third radio)
5.5 mm overall diameter / 2.1 mm
center pin hole
RJ-45
RJ-45
RJ-45
N/A
100M/1G/2.5G Ethernet
100M/1G/2.5G Ethernet
• RS 232 Serial (115200 bits
per second)
• Data bits:8; Stop bits: 1
• Parity: None
• Flow Control: None
USB USB 2.0 port USB Type-A
Reset
* MACsec capabilities will be activated via a future software update.
Reset to factory default
settings port
Pin hole push
button
• Future use
Hold down and power cycle
the device to reset
Page 4
C-250
Operational Specications
Input Power
Number of Radios
Max Clients Supported 1024 (512 clients per radio) (dependent upon use cases)
MU-MIMO 8X8 on 5GHz radio and 4X4 on 2.4GHz radio
Number of Spatial Streams 8 for 5GHz radios, 4 for 2.4GHz radio, 2 for multipurpose radio
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
12V DC (5.5mm overall diameter/2.1mm center pin hole)
802.3bt power - Full function
802.3at power - Reduced Function (No USB; Tx power reduced by 3dB for both radios)
2 access radios; one 4x4:4 2.4GHz and one 8x8:8 5GHz radio for simultaneous dual band
access.
1 multi-function 2x2 radio for continuous WIPS, spectrum analysis and client connectivity
tests
Data Sheet
RF Transmit Power
80+80MHz Non-Contiguous Channel
Bonding
Bandwidth Agility Yes
3G/4G Macro and Small Cells Interference
Mitigation
Frequency Bands
Dynamic Frequency Selection
WiFi Specications
Frequency Band Scanning Transmission
5GHz Band
Dynamic Frequency Selection
DFS and DFS2
26dBm on 5GHz radio (max) and 23dBm on 2.4GHz radio (max); Actual power for Tx will
depend on Country Regulatory Domain
Yes
Yes
2.4-2.4835 GHz, 4.9-5.0GHz, 5.15-5.25 GHz; (UNII-1), 5.25-5.35 GHz, 5.47-5.6 GHz,
5.650-5.725 GHz (UNII-2), 5.725-5.85 GHz (UNII-3)
Supported in compliance to all latest amendments from FCC, CE, IC, CB, TELEC, KCC regarding
certications.
IEEE 802.11a/n/ac/ax
All regions
4.92 ~ 5.08 GHz
5.15 ~ 5.25 GHz
5.25 ~ 5.35 GHz
5.47~ 5.725 GHz
5.725~ 5.825 GHz
USA & Canada
(FCC/IC)
5.15 ~ 5.25 GHz
5.25 ~ 5.35 GHz
5.725~ 5.825 GHz
Europe
(ETSI)
5.15 ~ 5.25 GHz
5.25 ~ 5.35 GHz
5.47~ 5.725 GHz
Modulation Type OFDM / OFDMA
Peak Data Rates Up to 4.8 Gbps
Antenna Integrated modular high eciency PIFA antenna x8 (peak gain: 6.1 dBi)
Page 5
Frequency Band
C-250
Scanning Transmission
All regions
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
IEEE 802.11b/g/n/ax
USA & Canada
(FCC/IC)
Data Sheet
Europe
(ETSI)
2.4GHz Band
Modulation Type DSSS / OFDM / OFDMA
Peak Data Rates Up to 1.1Gbps
Antenna Integrated modular high eciency PIFA antenna x4 (peak gain:4.92 dBi)
Receive Sensitivity
5GHz
Mode Rate Sensitivity (dBm)
802.11a
54 MBps -75
11n_HT20
11n_HT40
11ac_VHT20
2400 ~ 2483.5 MHz 2400 ~ 2473.5 MHz 2400 ~ 2483.5 MHz
2.4GHz
Mode Rate Sensitivity (dBm)
6 Mbps -92
802.11b
MCS 0 -93
802.11g
MCS 7 -75
MCS 0 -90
11n_HT20
MCS 7 -73
MCS 0 -95
11n_HT40
MCS 8 -70
1 Mbps -98
11 Mbps -90
6 Mbps -93
54 MBps -77
MCS 0 -95
MCS 7 -76
MCS 0 -91
MCS 7 -73
11ac_VHT40
11ac_VHT80
11ax_HE20
11ax_HE40
11ax_HE80
MCS 0 -90
MCS 9 -68
MCS 0 -87
MCS 9 -63
MCS 0 -93
MCS 11 -64
MCS 0 -91
MCS 11 -62
MCS 0 -87
MCS 11 -59
11ac_VHT20
MCS 0 -95
MCS 8 -72
MCS 0 -91
11ac_VHT40
MCS 9 -70
MCS 0 -94
11ax_HE20
MCS 11 -65
MCS 0 -91
11ax_HE40
MCS 11 -63
Page 6
Aggregate Transmit Power
C-250
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
Data Sheet
5GHz
Mode Rate Power (dBm)
802.11a
802.11n_HT20
802.11n_VHT40
802.11ac_VHT20
802.11ac_VHT40
802.11ac_VHT80
6 ~ 18 Mbps 26
24 ~ 54 Mbps 25
MCS 0 ~ 4 26
MCS 5 ~ 7 25
MCS 0 ~ 4 26
MCS 5 ~ 7 24
MCS 0 ~ 4 26
MCS 5 ~ 7 25
MCS 8 ~ 9 24
MCS 0 ~ 4 26
MCS 5 ~ 7 24
MCS 8 ~ 9 23
MCS 0 ~ 4 26
MCS 5 ~ 7 23
MCS 8 ~ 9 22
2.4GHz
Mode Rate Power (dBm)
802.11b 1 ~ 11 Mbps 23
6 ~ 18 Mbps 23
802.11g
24 ~ 54 Mbps 21
MCS 0 ~ 4 23
802.11n_HT20
MCS 5 ~ 7 21
MCS 0 ~ 4 22
802.11n_HT40
MCS 5 ~ 7 20
MCS 0 ~ 4 23
MCS 5 ~ 7 21
802.11ax_HE20
MCS 8 ~ 9 20
MCS 10 ~ 11 16
MCS 0 ~ 4 22
MCS 5 ~ 7 20
802.11ax_HE40
MCS 8 ~ 9 20
MCS 10 ~ 11 17
802.11ax_HE20
802.11ax_HE40
802.11ax_HE80
MCS 0 ~ 4 26
MCS 5 ~ 7 25
MCS 8 ~ 9 24
MCS 10- 11 21
MCS 0 ~ 4 26
MCS 5 ~ 7 24
MCS 8 ~ 9 23
MCS 10- 11 21
MCS 0 ~ 4 26
MCS 5 ~ 7 23
MCS 8 ~ 9 22
MCS 10 ~ 11 19
Page 7
Radiation Patterns
2.4GHz - Peak Gain: 4.92dBi
C-250
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
Data Sheet
5GHz - Peak Gain: 6.1dBi
Page 8
C-250
Regulatory Specications
RF and Electromagnetic
Country Certication
USA FCC Part 15.247, 15.407
Canada IC
Europe CE EN300.328, EN301.893
Countries covered under Europe certication: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands ,Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
United Kingdom.
*For complete country certification records, please visit the site: https://www.arista.com/en/support/product-certificate
Safety
Country Certication
USA UL 60950 UL 2043
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
Data Sheet
Canada cUL 60950
European Union (EU) EN 60950, RoHS
Page 9
Ordering Information
Access Point
Part Number Description
C-250
Tri radio, 8X8 5GHz - 4X4 2.4GHz - 2x2 Dual-band scan radio Wi-Fi 6 access point
Data Sheet
AP-C250-SS-5Y
AP-C250-SS-3Y
AP-C250 C-250 8x8 tri radio 802.11ax (WiFi 6) access point with internal antennas
Mounting Options
Part Number Description
MNT-AP-24MM
MNT-AP-15MM
MNT-AP-INTSIL
MNT-AP-FLAT-14CM
Power
Part Number Description
PWR-AP-W4 Universal AC power supply for C-250, 12VDC, 3.3A
C-250 AP with 5 years bundled Cognitive Cloud SW subscription
C-250 AP with 3 years bundled Cognitive Cloud SW subscription
AP mount kit for Prelude (24mm, 15/16”) T-grid rails
AP mount kit for Suprafine (15mm, 9/16”) T-grid rails
AP mount kit for Interlude and Silhouette T-grid rails
AP mount kit for flat surface installation (wall, hard ceiling)
Headquarters
5453 Great America Parkway
Santa Clara, California 95054
408-547-5500
Copyright 2020 Arista Networks, Inc. The information contained herein is subject to change without notice. Arista, the
Arista logo and EOS are trademarks of Arista Networks. Other product or service names may be trademarks or service
marks of others.
Support
408-547-5502
866-476-0000
Sales
408-547-5501
866-497-0000
www.arista.com
Nov 11, 2020
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