TOI Author :: Travis Hammond

Arista’s DCS-7130LBR series of switches (https://www.arista.com/en/support/toi/eos-4-30-2f/15900-dcs-7130lbr-48s6qd-series) are capable of supporting SwitchApp, which is an FPGA-based L2/L3 switch. However, as the switch would then contain two switch ASICs (one traditional switch ASIC, and one FPGA-based switch) physically upon loading the SwitchApp application, there are certain limitations and nuances along with its usage. This document intends to explain some of the details.

TCAM features matching on the same packet type and executing the same action are implicitly prioritized if both are

Timestamping is an important tool for network engineering and performance analysis. The timestamp can be applied to a packet as either an inserted header or replacing the source MAC address of the original packet. Timestamps are recorded on ingress and applied on egress.

TAP Aggregation support for the DCS 7280R3 and DCS 7500R3 series is documented below, including the release in which a

This feature allows the removal of a configurable number of leading bytes starting from the Ethernet layer of packets sent to a monitor session. A new per-monitor session CLI command is provided to configure this, up to a maximum of 90 bytes.

Extra MPLS Pop is an extension to TAP Aggregation that allows 4 to 6 MPLS labels to be removed from a packet, compared to the previous limit of 1 to 3 labels. Popping 4 to 6 MPLS labels works for all packet types where popping 1 to 3 MPLS labels is supported and,

A Label Edge Router (LER) decapsulating an MPLS packet may choose to source the TTL and DSCP fields from either the MPLS

Ingress and egress IPv4 and IPv6 access lists do not automatically match the inner IP header when processing IP over

This article describes the VXLAN header stripping feature for TAP Aggregation mode. The purpose of this feature is to remove the outer L2 and VXLAN headers on a selected tap port, with the inner frame forwarded to the associated tool port(s).

This article describes the TAP Aggregation Traffic Steering features provided by the Extended TCAM Profile. This

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

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

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. This feature supports both IPv4 and IPv6 over MPLS.