Routing Table Scale

Network scalability is directly impacted by the size of a systems forwarding tables. In many systems a 'one size fits all' approach is

adopted using discrete fixed size tables for each of the common types of forwarding entry. The Arista 7280R3 Series leverage a database

for forwarding resources which can be allocated for MAC, Routing, Host and ARP tables with a choice of forwarding profiles that

optimizes these tables. The flexibility coupled with the range of system forwarding profiles ensures optimal resource allocation for a

wide range of network topologies and use cases including Internet Peering, virtualization, Carrier Edge and Security as well as

datacenter spine and leaf.

Algorithmic ACLs

Algorithmic ACLs combine both software and hardware to enable more flexible and scalable solutions for access control, policy based

forwarding and network telemetry. Combining general purpose memory with advanced software algorithms delivers higher scale,

performance and efficiency with lower power and is more cost effective than traditional solutions. Algorithmic ACLs leverage efficient

packet matching algorithms that in turn enables flow matching for access control, policy and visibility. The net benefits are a high

performance policy engine with both increased functionality and scale in a cost and power efficient solution. Algorithmic ACLs are

available on the 7280R3 and 7280R3K Series of products.

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Enables IPv4 and IPv6 access control at the same scale

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L4 rule ranges are programmed efficiently without expansion or reduced capacity

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Multiple actions can be performed on a single packet or flow

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User defined filters allow flexible packet classification based on offsets for custom actions

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Supports rich policy with consistent semantics that would exhaust classical resources

Inband Network Telemetry

Inband network telemetry, or INT, is a standards approach to providing deep visibility into traffic in real-time, with no impact on switch

performance. INT provides per-flow monitoring of traffic drops, latency, congestion and the network path. INT information can be

exported in IPFIX or sFlow formats to a management system or collector such as Arista CloudVision, for predictive analytics and deep

forensics to measure latency per device and across the network, trace packets and reconstruct path topology as well as detecting hot-

spots. Inband Network Telemetry is available on the 7280R3 and 7280R3K Series of products, with the ability to originate, pass and

terminate, along with mirroring to external collectors.

7280R3 Accelerated sFlow

SFlow is a powerful tool used commonly by network operators for advanced network telemetry, capacity planning, security analysis and

quality of experience monitoring. Traditional sFlow utilizes a system CPU for processing samples of hundreds of thousands of flows. In

modern high performance systems guaranteed high rate sampling requires the capability to both sample and process packet rates of

billions of packets per second. With the 7280R3 Series Accelerated sFlow feature the sampling and processing of flow samples into

sFlow datagrams is handled via integrated sFlow engines capable of supporting 1:500 sampling rates on full wire speed systems or

higher rates with selective sampling based on triggers and filters. All sFlow v5 information is included in the sFlow records ensuring

consistent integration with existing standard sFlow collection and analysis tools and no loss of information.

Maximum Network Design Flexibility

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Scalable designs with up to a 512-way ECMP provides flexibility and balances traffic evenly across the largest leaf-spine designs

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MLAG designs are effective at almost any layer of the network and maximize cross-sectional bandwidth with fast failover times

measured in 100’s of milliseconds for link failures.

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VXLAN gateway, bridging and routing with VMTracer features to enable next generation data center designs

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Scalable routing tables to support internet route peering

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Wide choice of dense 25G, 100G and 400G interfaces with broad support for flexible 10G, 25G or 50G modes.

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Support for standards based IEEE 25GbE with mix and match support for simple and cost effective migration

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Virtual output queue (VOQ) architecture and deep packet buffering to eliminate head of line blocking with low latency

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ACL scalability with up to 100K entries per forwarding engine allows for rich policy control

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Flexible allocation of L2 and L3 forwarding table resources for more design choice

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PTP, Accelerated sFlow, DANZ and multi-port mirroring tools provide network wide visibility and monitoring to detect traffic bursts,

monitor latency and congestion and allow capacity planning to improve application performance and availability

7280R3 Series | Technical Specifications