Tag :: TOI

This feature is only applicable to shaped port-channel subinterfaces. Traffic destined to a shaped port-channel subinterface would be load-balanced across all members of the port-channel. Shaping configured on the port-channel subinterface will be directly used across all the members of port-channel. Load-balancing criterion for flows destined to a shaped port-channel subinterface is the same as parent port-channel load-balancing criterion. Each shaped port-channel subinterface consumes as many SPPID (System physical port identifier) as the number of members added to the port-channel along with one extra port-channel resource (LAG ID) to combine all these SPPID. Anchor based approach is default behavior and we explicitly need to enable and reload the system for this feature to work.

This feature enables the user to configure PBR policy on an interface in the default VRF to match and forward

This feature adds support for standard BGP GSHUT (0xFFFF0000) community. GSHUT community is the community used in

When configuring or modifying a RACL applied to a VLAN interface, the VLAN will be blocked while applying the updated

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 713x-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 userguide 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.

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.

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.

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.

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. 

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.

Unidirectional links is a feature that configures an Ethernet interface transmit and receive paths to be independent. Specifically, the transmit path can be up or down independent of the receive path being up or down.

The Unified Forwarding Table (UFT) is a group of memories that is shared between Layer2 and Layer3 lookup tables with capabilities for variable partitions. Rather than separate Layer2 and Layer3 lookup tables of fixed size, the UFT may be partitioned to support user-requested combinations of Layer2 and Layer3 lookup tables of varying sizes. The new UFT partitioning CLI has capabilities to reconfigure individual forwarding table scales (Layer2, Layer3 Unicast, Layer3 Multicast) according to the user’s input. The CLI provides an interface for granular control of the underlying UFT resources.

With the 13.0 release, CloudVision Cognitive Unified Edge (CV-CUE) lets you configure Unique PSK (UPSK) for client authentication. UPSKs allow users  to connect to the same SSID using a unique PSK which is user specific. UPSK provides added security as compared to single PSK because single PSKs are easily compromised.

With the 15.0 release, CloudVision Cognitive Unified Edge (CV-CUE) introduces the following enhancements to the Unique-PSK(UPSK) workflow: