- Written by Gokul Unnikrishnan
- Posted on March 3, 2023
- Updated on January 30, 2024
- 3957 Views
This feature allows for the configuration of password requirements when creating or modifying local user accounts. Specifically, policies can necessitate that passwords meet the following requirements:
- Written by Neil Jarvis
- Posted on March 2, 2022
- Updated on June 7, 2023
- 8248 Views
A L2 sub-interface is a logical bridging endpoint associated with traffic on an interface distinguished by 802.1Q tags, where each <interface, 802.1Q tag> tuple is treated as a first-class bridging interface.
- Written by Shyam Kota
- Posted on February 23, 2021
- Updated on July 12, 2023
- 8549 Views
This feature terminates GRE packets on a TapAgg switch by stripping the GRE header and then letting the decapped packets go through the normal TapAgg path. With this feature, we can use an L3 GRE tunnel to transit tapped traffic to the TapAgg switch over an L3 network. That would widely extend the available use cases for TapAgg.
- Written by Prateek Mali
- Posted on August 19, 2020
- Updated on May 22, 2024
- 18906 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 Dana Cook
- Posted on March 3, 2023
- Updated on March 3, 2023
- 3959 Views
The MPLS LFIB counters feature was enhanced to add support for counting labels that correspond to VRF termination labels. The full details of the MPLS LFIB counters feature can be found in the original
- Written by Abhiram Kalluru
- Posted on March 3, 2023
- Updated on March 20, 2023
- 4226 Views
This feature introduces a flag to indicate to a gNMI client that the FIB (forwarding information base) or IPv4/IPv6 unicast AFT (abstract forwarding table) have converged and the snapshot is consistent with the device.
- Written by Matthew Carrington-Fair
- Posted on March 3, 2023
- Updated on May 21, 2024
- 3988 Views
This feature allows IP FIB (Forwarding Information Base) export through the OpenConfig AFT YANG models.
- Written by Prasanna Parthasarathy
- Posted on December 23, 2021
- Updated on July 12, 2024
- 12650 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 Charlotte Fedderly
- Posted on June 20, 2022
- Updated on July 19, 2024
- 5466 Views
Synchronous Ethernet (SyncE) provides support for frequency synchronization over Ethernet between devices traceable to an external frequency reference, like a primary reference clock, as specified in ITU G.8261.
- Written by Stefan Kheraj
- Posted on March 3, 2023
- Updated on March 14, 2024
- 3663 Views
Support for independently editing packets copied to multiple tool interfaces.
A Tap Aggregation steering policy can redirect and replicate incoming traffic streams, as well as apply various packet editing actions, e.g., VLAN identity tagging, MAC address rewrite, timestamping, header removal, etc.
- Written by Shyam Kota
- Posted on June 14, 2019
- Updated on June 1, 2023
- 7943 Views
This article describes a set of CLI commands to create TCAM profiles. The profile is composed of a set of TCAM features, with each feature having customized lookup key, actions and packet types to hit.
- Written by Isidor Kouvelas
- Posted on February 28, 2022
- Updated on July 29, 2024
- 13414 Views
Virtual Private LAN Service (VPLS) appears in (almost) all respects as an Ethernet type service to customers of a Service Provider (SP). A VPLS glues together several individual LANs across a packet switched network to appear and function as a single bridged LAN. This is accomplished by incorporating MAC address learning, flooding, and forwarding functions in the context of pseudowires that connect these individual LANs across the packet switched network. LDP signaling is used for the setup and teardown of the mesh of pseudowires that constitute a given VPLS instance.
- Written by Srinivasan Rammoorthy Mahalingam
- Posted on March 3, 2023
- Updated on March 3, 2023
- 4077 Views
This article describes the support of a VLAN filter for IP, IPV6 and MAC ACLs on the ingress ports. The users will be able to filter the packets by specifying a VLAN id in the ACL rule. VLAN id specified in the ACL rule is internal broadcast domain VLAN id.