- Written by Prateek Mali
- Posted on August 19, 2020
- Updated on May 22, 2024
- 18909 Views
Access Control Lists (ACL) use packet classification to mark certain packets going through the packet processor pipeline and then take configured action against them. Rules are defined based on various fields of packets and usually TCAM is used to match packets to rules. For example, there can be a rule to match the packet source IP address against a list of IP addresses, and drop the packet if there is a match. This will be expressed in TCAM with multiple entries matching the list of IP addresses. Number of entries is reduced by masking off bits, if possible. TCAM is a limited resource, so with classifiers having a large number of rules and a big field list, TCAM runs out of resources.
- Written by Sridhar Nagarajan
- Posted on December 16, 2021
- Updated on December 16, 2021
- 5452 Views
Unicast Reverse Path Forwarding (uRPF) can help limit malicious IP traffic on a network. uRPF works by enabling the
- Written by Dhruvalkumar Patel
- Posted on December 17, 2021
- Updated on December 27, 2021
- 5388 Views
L3 subinterface counters do not count GRE terminated (decap) packets and other tunnel types packets such as decap
- Written by Shelly Chang
- Posted on January 6, 2022
- Updated on May 3, 2024
- 7780 Views
This feature introduces hardware forwarding support of IPv4 multicast traffic over IPv4 GRE tunnel interfaces in Arista Switches. Multicast source traffic can reach the receivers which are separated by an IP cloud which is not configured for IP multicast routing by utilizing a GRE tunnel.
- Written by Prasanna Parthasarathy
- Posted on December 23, 2021
- Updated on July 12, 2024
- 12651 Views
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 userguide on the Arista Support site.
- Written by Travis Hammond
- Posted on April 24, 2020
- Updated on January 17, 2022
- 6062 Views
TAP Aggregation support for the DCS 7280R3 and DCS 7500R3 series is documented below, including the release in which a