Tag :: TOI

PIM Static Source Discovery (SSD) is a feature implemented as part of PIM-SM. Familiarity with setting up and configuring PIM-SM (Sparse Mode) and PIM-SSM (Source-Specific Multicast) is assumed.

Ingress policing on front panel ports is supported on DCS 7010X and DCS 7050X since EOS4.14.0F. When ingress policing

Traffic is managed through policy maps that apply data shaping methods to specific data streams. A policy map is a data

QoS profiles have been applicable on fabric and front panel ports across all platforms from EOS 4.17.0F release

Policy Based Routing (PBR) is a feature that is applied on routable ports, to preferentially route packets.  This is

Port Security: Protect mode (PortSec Protect) is newly added to the Port Security feature and is designed to restrict

Port Channel member status logging on Arista switches allows logging of Ethernet interfaces joining or leaving a

View PTP counters to identify the types of messages being sent and received by PTP-enabled devices. Use this to troubleshoot issues with your network PTP configuration and connectivity. When announce and sync messages are present but delay request messages are missing, for instance, it may suggest that a host is having trouble locking to the boundary clock.

Precoding is used to help reduce the burst error length of DFE (Decision Feedback Equalizer) error events with PAM-4 modulation

Starting EOS 4.15.0F, a BGP route reflector can preserve the BGP attributes (next hop, local preference and metric)

Priority Flow Control is a link-layer flow control mechanism which may be used by an overwhelmed network node to ask its transmitters to stop transmission for a specified period of time. It does so by using special frames known as PFC frames, thus, relieving congestion at the receiver node. With respect to this behavior, PFC is very similar to Link Layer Flow Control ( LLFC ), however, unlike LLFC, PFC allows the overwhelmed node to specify which 802.1Q Class of Service ( CoS ) it wants to stop receiving traffic for. Thus, allowing differentiated treatment of traffic based on CoS.

Provisioning Settings allows you to configure CloudVision's default behavior when pushing configuration and image changes to devices. Each setting relates to an action used in Change Control. Ordinarily you should only need to use the default settings, but you can alter them for more control over CloudVision and EOS interactions for devices in your network. 

Proxy node segment helps in advertising segments in a segment-routing domain for prefixes that are originated outside the segment-routing domain.  Node B in the SR domain can advertise proxy-segments to node A for the loopacks of C and D which are not present in the SR domain. This feature will help in creating mpls routes for those loopbacks on node B. Note that if C and D loopbacks have LDP enabled and if they have exchanged the LDP labels with B then B can by default create a SR to LDP stitched mpls route even without enabling this feature. This feature is specific to the case where such stitched routes cannot be created.

This document describes the enhancements to Arista's IEEE 1588 PTP implementation introduced in EOS 4.15.0F.

CloudVision provides more than 20 overlay options to help you visualize the properties of network devices, interfaces, and links. Use the PTP overlay to visualize the topology of PTP enabled devices and their links. At a glance, you can see which device in a PTP domain is the grandmaster and which devices belong to a PTP domain.

This feature makes ARP and ND packets use a higher priority output queue when software forwarded on the switch. Doing

Since, now there can be multiple inputs, conflicts may arise. Non conflicting configurations are when non default

QSFP+ modules that support TX power DOM will now display the reported TX power value via show interfaces transceiver.

Forward Error Correction (FEC) is required with some QSFP100 media to achieve error free operation of the link when

RACL divergence enables the optimization of the utilization of hardware resources by installing ACLs only on the

TCAM sharing between different VLAN Interfaces when they have same ACL attached : Configurable via CLI

RADIUS Pooling lets you assign a pre-defined list of RADIUS Servers that Access Points (AP) can use to authenticate, authorize, and maintain clients' accounts. It offers better load-balancing capabilities and improved scalability.You do not have to specify the order of the RADIUS servers as Primary or Secondary. Every AP randomly chooses the RADIUS servers from the pool, and then independently decides the sequence of the RADIUS servers and follows the order. Two APs sharing the same RADIUS pool may not share the same order for the RADIUS servers. APs automatically distribute the client load based on an intelligent algorithm.

RADIUS proxy feature enables proxying RADIUS requests from a RADIUS client and forwarding it to a remote RADIUS server. Similarly, RADIUS proxy receives the reply from the remote RADIUS server and forwards it to the client.

With the 13.0 release, CloudVision Cognitive Unified Edge (CV-CUE) can redirect onboarding clients to a dynamic URL defined by the RADIUS. If the  RADIUS access-accept request has a role and a redirection URL for a client, access points (AP) can redirect such client’s HTTP or HTTPS requests. 

The SFP-10G-RA-1G-LX and SFP-10G-RA-1G-SX transceivers are rate adapting SFP+ transceivers with internal clause 37 auto-negotiation (AN) support. The transceiver host interface is 10G XFI and the module rate adapts in the egress direction from 10G to 1G before transmitting data on the attached fiber. In the ingress direction it rate adapts the received 1G data to 10G before sending to the host switch. This allows 1000BASE-LX and 1000BASE-SX support on switches which do not natively support 1G operation.

The rate watermark counters feature allows for the capturing of microbursts within a configured interval based on the fast interface counters. The rate watermark counters feature is built on top of the high frequency fast poll counters which allows for increased visibility of microbursts that may happen within a short time window.

Some data plane features on some switch platforms may require packets to be recirculated through the switch chip in

This feature allows to advertise routes learnt via BGP into IS IS network or IS IS routes into BGP network. It also

With the 18.0 release, you can prevent clients using locally-administered MAC addresses from accessing your network. Network administrators can ensure that only clients using their device’s globally unique MAC addresses are able to connect to the network. By making sure that only devices with globally unique MAC addresses connect to the network, you can mitigate potential security threats associated with spoofing or unauthorized access by having control over device identification.

In the BGP Update message’s AS_PATH, routers have the capability to perform route aggregation and combine the ASes an update has traversed, merging the discrete entries into an  AS_SET. Routers can also do this within the local confederation with member AS numbers, using an AS_CONFED_SET. Route aggregation can be problematic as it blurs the semantics of what it means to originate a route. RFC 6472 recommends not using AS_SET or AS_CONFED_SET in BGP, and further justifies reasoning as to why, as well as provides a recommended way to handle updates with these messages.

This feature removes an ARP entry when the physical port, on which the ARP entry's MAC address is learned, goes down.

In the 14.0 release, CloudVision Cognitive Unified Edge (CV-CUE) introduces a new Report, WiFi-Radios Instantaneous.

Arista WM gathers a wealth of data about the wireless deployment. The data gathered includes Wireless Intrusion

Equal Cost Multi-path (ECMP) provides the ability to load-share traffic across multiple next-hops. When a next-hop fails or is deleted all flows are affected. This is due to the nature of the load-balancing algorithm which re-calculates a new hash for the flows based on the remaining active next-hops.

When this feature is enabled, responses to gNMI get requests as well as NETCONF get-config responses will contain the default values for YANG leafs if those leafs do not have any other value. This means that where a leaf value would normally be returned in a response, its default value (as defined in the YANG model) will be returned if the leaf does not have any other value assigned to it. Before this change, leafs that had a default value would not have been included in gNMI get responses.

The transmit power configured on UI is now treated as EIRP (Equivalent Isotropically Radiated Power) instead of

The BGP labeled unicast (LU) RFC is used to advertise BGP routes with a stack of MPLS labels, thereby allowing

This feature provides support for advertising IPv4 unicast Network Layer Reachability Information (NLRI) with

EOS 4.17.0F adds support for IPv4 address family in OSPFv3 (multiple address family support) based on RFC5838.

Multi Agent, Platform independent. This feature supports RFC 7606, which  provides improved security and

With the 16.0 release, CloudVision Cognitive Unified Edge (CV-CUE) introduces the Client Roaming Explorer. It provides a graphical and tabular view of a client’s roaming events from one access point (AP) to another AP.

Creating a scope, or attribute, for your SAML provider allows you to pass CloudVision roles from the corresponding identity provider to CloudVision. This allows CloudVision user accounts to be automatically created with these roles when a new user logs in with that provider.

The broadcast queue towards the CPU is shared among all interfaces of the forwarding chip. So broadcast storm on a

This feature allows routing traffic across two Vrf domains on the same switch using an external loopback cable

Routing control functions (RCF) is a language that can be used to express route filtering and attribute modification logic in a powerful and programmatic fashion.

Routing Control Functions (RCF) is a language that can express route filtering and attribute modification logic in a powerful and programmatic fashion.The document covers: Configurations of a RCF function for BGP points of application

In an MLAG setup, routing on a switch (MLAG peer) is possible using its own bridge/system MAC, VARP MAC or VRRP MAC.

RSVP-TE P2MP LSR adds transit support for Point-to-Multipoint (P2MP) LSPs. Specifically the feature adds protocol support for the transit role as described in RFC 4875.

With the 13.0 release, you can integrate SAML SSO with a captive portal for authentication. The SAML integration functionality is only available for captive portals hosted on the Arista Cloud. It is not available if the captive portal is hosted on third-party servers or on the access point.

Sampled Mirroring is an extension of the Mirroring feature and sampling is a property of the individual mirroring session: when the session's sample rate N is specified, a packet eligible for mirroring will have a 1/N chance of being mirrored, that is, 1 packet is mirrored for every N packets.