EOS 4.27.0F TOI

This TOI supplements the Ingress Traffic Policy applied on ingress interfaces. Please refer to that document for a description of Traffic Policies and field-sets. This TOI explains the Traffic Policies as applied in the egress direction on interfaces

This feature allows Octa to act as a collector for IPFIX and sFlow datagrams and to aggregate and stream the collected data in response to a gNMI subscription. Octa is a process in EOS which combines OpenConfig and certain TerminAttr functionality, primarily with the intent of servicing gNMI requests for OpenConfig paths and for "EOS native" paths.

The Tap Aggregation timestamping feature supports both timestamping packets in TAI (International Atomic Time)

Traffic steering to nexthop groups allows specifying one or more nexthop groups as the destination 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. 

This article describes how to customize TCAM ( Ternary Content Addressable Memory ) lookup for each feature which uses TCAM.

The VLAN mapping or translation feature provides the ability to map an arbitrary VLAN tag to a particular bridging VLAN on the switch. This mapping can be either bidirectional or applied only in one direction (incoming/outgoing).

This document describes the VRF selection policy and VRF fallback feature. A VRF selection policy contains match rules that specify certain criteria (e.g. DSCP, IP protocol) as well as a resulting action to select a VRF in which to do the FIB lookup. The VRF fallback feature is an extension of these policies which allows users to optionally specify a “fallback” VRF for each VRF. The behavior is such that if the FIB lookup fails in a match rule’s selected VRF, another lookup will be attempted in the configured fallback VRF. Additionally, the fallback VRF itself can have yet another fallback VRF, such that if the lookup in the VRF and fallback VRF fail, the fallback-of-the-fallback VRF will be looked up (see the Configuration section for an example of this).

This document describes the support of VxLAN Bridging and Routing on the R3 series of DCS 7280, 7500 and 7800 Arista

WRED ( Weighted Random Early Detection ) is one of the congestion management techniques.