Tag :: TOI

The nexthop group feature allows users to manually configure a set of tunnels. Nexthop group counters provide the ability to count packets and bytes associated with each tunnel nexthop, irrespective of the number of times it appears in one or more nexthop groups. In other words, if a nexthop group entry shares a tunnel resource with another entry, they will also share the same counter.

Nexthop selection using GRE key allows for nexthop routing selection based on the GRE key of a GRE encapsulated IP

Nexthop group match in PBR policy enables the user to match incoming packets being routed to a specified nexthop group

Configuration of arbitrary combinations of speeds on subinterfaces is being restricted on 800G CMIS Arista transceivers. This feature restricts configuring only uniform sets of speeds on applicable transceivers. This affects Arista-branded 800G active optical transceivers.

Vmware NSX Controllers expect Hardware VTEPs to monitor the liveness of the Replication Service Node via BFD.  In

The EOS Event Manager feature provides the ability to specify a condition and an action to be carried out when that

With the 18.0 release, you can trigger the Auto-Channel Selection (ACS) Mode and Transmit Power Control (TPC) Mode for a radio on demand. In ACS Mode, the Access Point (AP) scans the network to select the best channel. In Auto-TPC Mode, the AP automatically adjusts its transmit power to minimize interference with neighboring Arista APs.

With the 15.0.1 release, CV-CUE extends the wired configuration and monitoring capabilities. You can now onboard switches (710P, 720XP, 720DP) to CV-CUE. You can also configure switches and manage switch-related settings directly from the UI.

 . These are the release notes and configuration guide for the OpenConfig feature available in the 4.20.1F EOS

These are the release notes and configuration guide for the OpenConfig feature available in the 4.20.2.1F EOS

We now support configuration diffs to be generated and to be streamed via OpenConfig.  Please note that there are limitations to using this feature to obtain the correct configuration diff of consecutive configuration changes.  Subsequent sections will explain:

This feature allows us to obtain system mount points information via OpenConfig.  The information that can be obtained is equivalent to the information that we view by executing the ‘df -k’ linux command.

OpenFlow 1.3 protocol is supported in EOS 4.15.0F on DCS 7050 and DCS 7050X series of switches. The switch and the

A new forwarding pipeline is being introduced in EOS 4.15.0F which allows the traffic entering the switch to be

Action TTL decrement in an OpenFlow flow. OpenFlow 1.3 Group support on DCS 7010 series. Clearing

With the 14.0 release, you can integrate OpenID Connect with a captive portal for authentication. The OpenID Connect integration functionality is available only 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.

The OSPF Non Stop Forwarding (NSF) feature adds support for Graceful OSPF Restart (IETF RFC 3623) and Graceful OSPFv3

EOS 4.15.3F adds support for configuring auto cost in OSPFv3 for routed ethernet interfaces and LAG interfaces.

OSPF distribute list is a policy construct to filter out routes received from OSPF LSAs so that they will not be

The OSPF Max LSA Retransmission Threshold feature adds a configurable limit to the number of LSA update

OSPF Non Stop Forwarding (NSF) adds support for Graceful OSPF Restart, IETF RFC 3623 .  With OSPF Graceful Restart

An OSPF router can attract all traffic towards itself from within the OSPF network, by advertising a default route. Often it is desirable to set a route tag in this default route. This feature will add a CLI parameter to default-information originate that allows an external route tag to be set on the default route for both unconditional and conditional modes.

This feature adds authentication support for OSPFv3. Unlike OSPFv2, OSPFv3 does not have authentication fields

EOS 4.17.0F adds support for BFD in OSPFv3. BFD provides a faster convergence in scaled deployments where using

OSPFv3 distribute-list is a policy construct to filter out routes received from OSPFv3 LSAs so that they will not be installed on the router even though the routes are resolved and are installable. The filtering is performed after SPF calculation and only on routes from received LSAs, not on self-originated LSAs. This feature does not affect the OSPFv3 protocol behavior of the router. LSAs are exchanged, e.g. flooded, even if the routes are not installed locally on the router.

EOS release 4.20.1F adds OSPFv3 flood pacing support that allows configuring the minimum interval between the

In previous releases of EOS, Stub area and NSSA area types were supported for OSPFv3, but without support of the "no

Today in any WAN deployment, customers are required to configure path metrics in load balance policy to program a set of best paths in dataplane. Path metrics are multi-dimensional, it include loss, latency, jitter, and load of path. It is not very intuitive to come up with exact values for these metrics as they are highly dependent on the type of application and geographical locations of routers. Also these path metrics keep changing and except for a few apps that require strict max characteristics on latency, jitter or loss, the other apps are able to tolerate variances in metrics.

Overlay IPv6 routing over VXLAN Tunnel is simply routing IPv6 packets in and out of VXLAN Tunnels, similar to

This document describes a few enhancements done in Wireless Manager (WM) release 8.8 in respect of  AP firmware

By default, the scheduling between parent interfaces and the attached shaped subinterfaces is done in strict priority mode where the parent interface has higher priority than shaped subinterfaces. Subinterfaces that are not shaped use the same queues as the parent so the traffic on these subinterfaces will also have strict priority over shaped subinterfaces.

With the 14.0 release, you can add device passwords and AP-Server Key passphrase as defined in the password policy. The passwords are based on the password policy and password settings that you configure in CV-CUE.

This feature provides the capability to mirror special L2 control frames, called the Pause or Priority Flow Control

Policy Based Routing (PBR) provides the flexibility of routing according to custom defined policies in a way that

Prior to EOS 14.15.0F, if a single packet hit both a PBR and an ACL rule, then only the hardware counters corresponding

The per port per VLAN feature allows application of QoS policies for IP, IPv6 and non IP traffic on a per port per VLAN

DCS 7010T. DCS 7050X. DCS 7250X. DCS 7260X. DCS 7280E, DCS 7280R. DCS 7300X. DCS 7320X. DCS 7500E,

This feature enables per port TC-To-COS mapping, where TC represents Traffic-Class and COS represents Vlan tag PCP bits. While at present there is a global TC-To-COS mapping, we can use the TC-To-COS feature to create custom profiles which can be applied to the required interfaces. 

Per VLAN MAC Learning is a feature to enable/disable mac learning per vlan instead of per port. Using this feature with

The software for Syslog, NTP and SNMP used in EOS resolves hostnames at service start-up. It’s possible that during service operation, the configured host becomes unavailable and the configuration needs to be set to a different host to continue the service. The problem is that such change requires manual restart of the service. Even if the hostname doesn’t change and only the underlying address is updated at the DNS server, the administrator has to manually reset service configuration.

Permitting traffic during ACL updates has been available for traffic steering in tap aggregation mode since EOS

Hosts in a branch need to access internet bound services. In traditional deployments, edge routers in branches are connected to the internet via WAN port. To secure the internal network from the internet we have ACLs( Access Control Lists ) to filter the traffic in/out from the WAN port. If we want to filter the traffic into the port we have ingress ACL, egress ACL filters the traffic out of the port. By default, without any ACL configuration present on the WAN port, we accept every traffic coming to the WAN port.

PFC (Priority based Flow Control) is a flow control mechanism used in RDMA environments. PFC provides a link level

This feature enables detection of egress queues that are unable to transmit packets for prolonged periods of time

DCS 7050X/X2/X3 series. DCS 7060X/X2/X3 series. In previous releases, PFC Watchdog supported only queues

This article is intended to discuss how to configure the Phone VLAN on an Arista switch.

The PHY test pattern CLI can be used to check the quality of the physical layer for an Ethernet interface. This is done by

PIM External Gateways (PEGs) allow an EVPN overlay multicast network to interface with an external PIM domain. They can be used to interconnect two data centers using an external PIM domain in between them.

PIM VRF feature adds VRF support to these existing multicast protocols: PIM SM, PIM BSR, IGMP and MSDP.

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.