ACL based traffic management often requires matching packets’ destination addresses against one or more sets of

ZeroTouch Provisioning  (ZTP) is used to configure a switch without user intervention. Campus ZTP extends the

4.27.1F Campus ZTP VLA

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

Source port filtering is enabled by default to prevent traffic from egressing out the same interface it ingressed on.

This feature allows the user to have a custom DSCP To TC map per subInterface. By default,

This feature allows setting the desired maximum VOQ latency. Drop probabilities are adjusted in hardware to meet

MetaMux is an FPGA-based feature available on Arista’s 7130 platforms. It performs ultra-low latency Ethernet packet multiplexing with or without packet contention queuing.

MetaWatch is a FPGA-based feature available for Arista 7130 L-Series and LB-Series platforms. It provides precise timestamping of packets, aggregation and deep buffering for up to 48x Ethernet links at 10G. Timestamp information and other metadata such as device and port identifiers are appended to the end of the packet as a trailer.

4.27.1F EOS 4.28.0F

Arista EOS currently supports a maximum 6 labels push on R2 and R3 series platforms. This feature increases maximum

Macro Segmentation Service with Layer 3 firewall (MSS FW) provides a mechanism to offload policy enforcement on TORs

PIM External Gateways (PEGs) allow an EVPN overlay multicast network to interface with an external PIM domain. They

This feature adds a new CLI command which can be used to clear RSVP sessions. Clearing a session will remove the current

RSVP 4.27.1F Clear

This feature allows the user to configure upto 255 unique QoS policy maps on the front panel ports per FAP.

This feature adds RSVP information for three tables from MPLS TE STD MIB:. mplsTunnelTable.


This article describes the usage of the ptp free-running source clock command, which selects a time source used by a switch running the Precision Time Protocol (PTP) while it is in a free-running state.

Ptp 4.27.1F System Time

L3 subinterface counters do not count GRE terminated (decap) packets and other tunnel types packets such as decap