Tag :: TOI

The Switch-less Service Node (SN) feature enables the direct installation of managed services on a service node, eliminating the requirement for an associated policy or connected switch. This capability supports deployments that are independent of the full Network Packet Broker (NPB) switching infrastructure. Existing workflows support the direct installation of managed services, such as filtering and deduplication, on the SN.

VXLAN tunneling requires that the switch where the tunnel terminates is configured with a VTEP that matches the configuration on the AP. CV-CUE now provides an easier way to match configurations on both AP and the switch. By having the same VXLAN configuration for access points (APs) and switches, you can aggregate all wireless traffic from the same VXLAN to a single wired destination for better traffic management and visibility.

SwitchApp is an FPGA-based feature available on Arista’s 7130LB-Series and 7132LB-Series platforms. It performs ultra low latency Ethernet packet switching. Its packet switching feature set, port count, and port to port latency are a function of the selected SwitchApp profile. Detailed latency measurements are available in the user guide on the Arista Support site.

As a result of upgrading the Debian distribution to Bookworm, the original Python CLI (based on python2) was removed, as the interaction with the DANZ Monitoring Fabric (DMF) and CCF is performed mainly from the Controller. However, several customer operations involve some of the commands used on the switch. These commands are implemented in the new CLI (based on python3) in Switchlight in the Bookworm Debian distribution.

For modular systems operating under the SSO redundancy policy, if  the system database agent (Sysdb) on the

On platforms with multiple FAPs (e.g., chassis), hashing parameters (hash seed, polynomial, etc.) must be synced across all the FAPs when symmetric hashing is enabled to ensure hashing behavior is consistent for any given ingress port. The fix applies to all DMF Sand platforms running EOS.

With the 13.0 release, CloudVision Cognitive Unified Edge (CV-CUE) introduces system backup and restore capability. You can back up the entire system or only the configuration files, and restore them when needed.

Role based access control (RBAC) is an approach to regulating access to network resources based on the roles of

The tag matcher is a new simple input in Studios that allows you to specify a list of devices to be passed as the value for another input field. It is similar to the resolver input in that it allows users to specify a set of devices or interfaces using tag queries, but unlike the resolver, the tag matcher doesn’t require a member input to be configured.

This article describes the TAP Aggregation 802.1Q (VLAN) tag stripping feature. This feature allows up to two of the outermost incoming 802.1Q tags to be stripped, and can be configured on a traffic steering policy or a tool port.

In TAP Aggregation mode, when receiving a packet whose Frame Check Sequence (FCS) is corrupted, the default behavior

This article describes the Tap Aggregation MPLS Pop feature. The purpose of this feature is to support tools that do not parse MPLS labels and therefore need the switch to remove (pop) the MPLS header.

The traffic steering policies used in tap aggregation mode allow steering traffic from tap to tool ports using ‘set

This article describes a new TAP Aggregation TCAM profile and a corresponding enhancement to the TAP Aggregation

This article describes the Tap Aggregation Traffic Steering on MPLS Labels feature. The purpose of this feature is to

This TOI briefs the commands related to the traffic steering policies used in Tap Aggregation. These commands

As of EOS 4.15.0F, there are two general enhancements to Tap Aggregation on the 7500E platform in 4.15.0F:

As of 4.15.0F, tap aggregation can be configured in conjunction with other switching and routing features.  This

The Tap Aggregation Manager (TAM) is a GUI front end for configuring and monitoring Tap Aggregation features of

In TAP Aggregation mode, configuration options are provided to handle special packet types. When receiving a packet whose Frame Check Sequence (FCS) is corrupted, the default behavior is to replace the bad FCS with the correct value and forward it. Configuration options are available to control the FCS behavior, such as to discard errors, pass through the bad FCS, or append a new FCS.

This feature comprises two parts:

To extend Traffic Steering to Nexthop Groups (GRE) by allowing us to specify one or more nexthop groups of type DzGRE (DANZ GRE) as the destination for a TAP aggregation steering policy. A DzGRE header will be encapsulated to the packets sending out a nexthop group of type DZGRE.

Traffic steering to nexthop groups allows specifying one or more nexthop groups as the destination, either by default for a TAP port or for a TAP aggregation steering policy. Traffic steering is a TAP aggregation process that uses class maps and policy maps to direct data streams received on TAP ports. A nexthop group is a data structure that defines a list of nexthop addresses and a tunnel type for packets routed to the specified address.

This article describes the addition of a show command to display the mapping between tap and tool ports on a per

Media Access Control Security (MACsec) is an industry standard security technology that provides secure

This document describes the truncation capability for Tap Aggregation, which allows tapped traffic to be truncated to a smaller size before being transmitted.

With the 13.0 release, you can enable Target Wake Time(TWT) from CloudVision Cognitive Unified Edge (CV-CUE). TWT is one of the advanced features of Wi-Fi 6. It enables access points (AP) and stations (STAs) to negotiate schedules for active and sleep durations.

Slice reservation can be used to solve TCAM resources limitations due to suboptimal group order in the TCAM because of the FCFS (First come first serve) nature of the TCAM. The user will be able to reserve a certain amount of entries in the TCAM for a specific feature. The configuration happens through a new keyword in feature mode when configuring a TCAM profile.

The Dapper action, derived from Brown University research, identifies TCP session issues by measuring specific connection attributes. This analysis determines whether performance degradation stems from the client, server, or network devices.

DMF 8.7.0 introduces an updated dashboard for analyzing TCP Flows from Dapper. The DMF Analytics Node (AN) displays TCP Window, Network Loss, Zero Window, RTT vs Sender Reaction Time for flows or select Flow from TCP Health Flows.

BGP routing information often contains more than one path to the same destination network. The BGP best-path selection algorithm determines which of these paths should be considered as the best path to that network

Topology Independent Fast Reroute, or TI-LFA, uses OSPF SR to build loop-free alternate paths along the post-convergence path. These loop-free alternates provide fast convergence.

Secure boot is a security feature available in Aboot (Arista bootloader) that verifies the cryptographic signature of the EOS SWI (software image) before it is booted. Aboot embeds certificates that allow it to recognize and validate official EOS releases from Arista. If the signature verification is successful, the secure boot check passes and Aboot proceeds to boot the SWI. If the signature verification fails, the boot is aborted.

Leaf Smart System Upgrade (SSU) provides the ability to upgrade the EOS image with minimal traffic disruption.

Before release 4.34.0F traffic in Port Mode PW was always classified based on COS-To-TC global map irrespective of trust mode. This feature allows users to classify traffic in accordance with trust mode, default CoS and default DSCP of the interface.

This feature enables applying traffic policies on incoming traffic and redirecting the traffic to a nexthop other than the one the routing logic would choose. This essentially overrides the routing logic decision. If there is no rule matching the packet, the packet is sent to the routing logic to be routed.

This article describes the TAP Aggregation User Defined Fields feature. The purpose of the User Defined

This feature introduces a slot level CLI command for SFP transceivers. When configured, EOS will only manage the transceiver via the low speed hardware pins. The command is intended to be used in situations where SMBUS communication to access transceiver EEPROM is not reliable, which would normally lead to EOS disabling the port. Enabling this feature ignores any EEPROM dependent functionality and only turns on the laser, which may allow the link to come up when the default factory settings for both ends of the link are compatible.

This feature adds support for viewing the Digital Optical Monitoring (DOM) parameters for the optics that support

The feature introduces a CLI command for transceiver reinitialization, simulating a physical removal and reinsertion of the transceiver. This is a great feature for remote troubleshooting, when physical access is not possible or convenient. To configure, issue the CLI command "transceiver reinitialize slot" in exec mode. The command takes effect immediately, toggles the reset pin and initiates a transceiver initialization sequence.

This feature provides the capability to configure transceiver SERDES electrical tuning parameters. The ability to

When the system exhausts ECMP resources, the Transient ECMP feature enables route programming through a single available next-hop from the original ECMP route. Once the system can program the full ECMP route, the transient ECMP route is removed after successfully installing the ECMP route.

The following describes LAG hashing for L2GRE and VXLAN transit traffic on Arista 7050X4 platforms: For L2GRE transit traffic, LAG hashing uses only the encapsulated (inner) packet header fields. There is no option to use underlay (outer) packet header fields. When the encapsulated packet is IP, the system uses the IP parameters configured with hash ipv4 or hash ipv6 for hashing.

UDF is an important DMF feature that matches customized fields in packet payloads for network traffic filtering on the Arista 7050X4 Series. Only supports IPv4 traffic UDF filtering, Maximum UDFs per rule: 6 UDFs.

As of EOS 4.15.2F, the support for the tuning of tunable DWDM 10G SFP+ transceivers (10GBASE DWDM) is added.

DMF 8.7.0 introduces an updated dashboard for viewing tunnel traffic. The widgets display traffic distribution by tunnel type using sFlow traffic categorized by a combination of Ethernet Type, Protocol, and L4 ports. Recognized tunnels include:

4.21.3F introduces support for the feature on the platforms listed below. The TOI describing the feature support on different versions/platforms is available here. 

TX queue precision shaping allows improving accuracy of observed shape rates on interfaces relative to configured values, in particular when the configured rate is low.

The BGP labeled unicast (LU) RFC is used to advertise BGP routes with a stack of MPLS labels, thereby allowing

Trident2 is a Switch on Chip (SoC) single chip with support for up to 1280Gbps of forwarding capacity (oversubscribed

This feature provides a configuration option to disable egress IPv4 RACL sharing allowing for uRPF to be configured.