Tag :: TOI

This feature extends the IS IS set overload bit command to support wait for BGP option. In scenarios

In our current implementation, on a switch with default startup config or no config, all ports come up in access

This feature is available when configuring BGP in the multi agent routing protocol model. Ethernet

L3 interface ingress counters can be used to count routable traffic coming into the box on sub interfaces and vlan

LACP on Loopback Interfaces allows for Active Port Channels on one or more interfaces whose link endpoints terminate

LACP State Transition Event Monitoring on Arista switches allows for quick and filterable viewing of LACP state

LAGs are allocated hardware resources on transition from one member (software LAG) to two members (hardware LAG) and

Arista switches use the hashing algorithm to load balance traffic among LAG (Link Aggregation Group) members

This document describes the current status of LANZ on DCS 7500R, DCS 7280R and DCS 7020R, for both polling and

LANZ on 7160S 32CQ, 7160 48YC6 and 7160 48TC6 adds support for monitoring congestion on front panel ports with Start,

Loop protection is a loop detection and prevention method which is independent of Spanning Tree Protocol (STP) and is not disabled when the switch is in switchport backup mode or port is in discarding state. The LoopProtect agent has a method to detect loops and take action based on the configuration by the user. In order to find loops in the system, a loop detection frame is sent out periodically on each interface that loop protection is enabled on. The frame carries broadcast destination MAC address, bridge MAC source address, OUI Extended EtherType 0x88b7 as well as information to specify the origins of the packet.

The Label Distribution Protocol (LDP) is a protocol in the Multiprotocol Label Switching (MPLS) context that allows

The LDP pseudowire feature provides support for emulating Ethernet connections over a Multiprotocol Label

Leaf Smart System Upgrade (SSU) provides the ability to upgrade the EOS image with minimal traffic disruption.Note: It is possible that SSU shutdown and bootup are not supported in the same image. If a product has shutdown support in image A and bootup support in a later image B, then SSU upgrade cannot be performed from image A to any images earlier than image B, including image A itself. However, upgrading from image A to image B onwards is allowed.

Link Fault Signalling (LFS) is a mechanism by which remote link faults are asserted over a link experiencing

Local Authentication (also known as authentication survivability) is the ability of access points (AP) to authenticate and onboard clients to the network using root CA certificates through the integrated EAP server of the AP. Use Local Authentication when the RADIUS servers are not reachable to authenticate the clients. It is typically a temporary authentication mechanism; avoid using it as a primary authentication. If there are certificate chains, you must upload the root CA certificate along with the certificate chain.

With the 14.0 release, CloudVision Cognitive Unified Edge (CV-CUE) removes the Wireless Manager(WM) UI dependency for login and for applying the service license. You will no longer be redirected to WM and can now directly login to CV-CUE from the UI. 

Support for Media Access Control Security (MACsec) with static keys was added in EOS 4.15.4. This feature brings

Maintenance mode is a framework to allow for the easy removal of elements of a switch or the entire switch from

Maintenance mode with sub interfaces is an extension to the maintenance mode feature released in EOS 4 15 2F. With this

A server cluster or a cluster is a group of Wireless Manager (WM) servers. A cluster comprises a parent WM server and one or more child WM servers.  A cluster is created to manage multiple servers using a single server. 

MapReduce Tracer is an existing feature that monitors MapReduce nodes that are directly connected to Arista

Classification of MPLS packets based on traffic class bits in MPLS header for QoS Policy Maps. DCS

Currently, the 'maximum routes' knob allows one to set an upper bound on the number of routes that can be received from a

Media Access Control Security (MACSec) is an industry standard encryption mechanism to protect all traffic flowing

Port mirroring allows you to duplicate ethernet packets or frames on a source interface to send to a remote host, like DANZ Monitoring Fabric (DMF). The mirrored packets or frames can be sent via a SPAN interface dedicated for communication with the host or over an L2 Generic Routing Encapsulation (L2GRE) tunnel.

Arista switches provide several mirroring features. Filtered mirroring to CPU adds a special destination to the mirroring features that allows the mirrored traffic to be sent to the switch supervisor. The traffic can then be monitored and analyzed locally without the need of a remote port analyzer. Use case of this feature is for debugging and troubleshooting purposes.

In an MLAG setup, routing on a switch (MLAG peer) is possible using its own bridge/system MAC, VARP MAC or VRRP MAC. When a peer receives an IP packet with destination MAC set to one of the aforementioned MACs, the packet gets routed if the hardware has enough information to route the packet. Before introducing this feature, if the destination MAC is peer’s bridge MAC, the packet is L2 bridged on the peer-link and the routing takes place on the peer. This behavior to use the peer-link to bridge the L3 traffic to the peer is undesirable especially when the MLAG peers can route the packets themselves.

MLAG currently checks for basic MLAG configuration to be consistent (e.g. domain id) before formation with the peer.

When MLAG peer link goes down, the secondary peer assumes the primary peer is down/dead, and takes over the primary

In an MLAG setup, periodic TCP/UDP heartbeats are sent over peer link to ensure IP connectivity between peers. Prior

If an MLAG flaps on one peer, then we may have to remap the MAC addresses learned, such that the reachability is via the

For packets sent and received on the front-panel interfaces, this feature allows creation of a profile to configure buffer reservations in the MMU (MMU = Memory Management Unit which manages how the on-chip packet buffers are organized). The profile can contain configurations for ingress and egress. On the ingress, configuration is supported at both a port level as well as a priority-group level. 

With the 17.0 release, you can view the Tunnel Status and Tunnel State of the standby VXLAN tunnel. Until now, you could only see the status of the tunnel being used. There was no way to know if your standby tunnel was reachable or not. With this release, you can view the Tunnel Status and the Tunnel State of your primary or secondary tunnel operating in the Standby Mode.

The feature MP BGP Multicast provides a way to populate the MRIB (Multicast Routing Information Base). MRIB is an

EOS 4.15.0F adds support for MPLS encapsulation of IP packets in EOS. The functionality is exposed through two

Multiprotocol Label Switching (MPLS) is a networking process that replaces complete network addresses with short

MPLS-over-GRE encapsulation support in EOS 4.17.0 enables tunneling IPv4 packets over MPLS over GRE tunnels. This feature leverages next-hop group support in EOS. With this feature, IPv4 routes may be resolved via MPLS-over-GRE next-hop group to be able to push one MPLS label and then GRE encapsulate the resulting labelled IPv4 packet before sending out of the egress interface.

This feature allows the Arista switch to act as the tunnel head for an MPLS tunnel and is exposed through two

While migrating from PVST to MSTP, or vice verse, the network engineer may choose not to run MSTP throughout the

Multi hop BFD  allows for liveness detection between systems whose path may consist of multiple hops. With an

Multicast Only Fast Reroute (MoFRR) is a feature based on PIM sparse mode (PIM SM) protocol to minimize packet loss in a

LANZ adds support for monitoring congestion on backplane (or fabric) ports on DCS 7304, DCS 7308, DCS 7316, DCS

In Tap Aggregation mode, an interface can be configured as tap or tool port. Tap ports are used to 'tap' the traffic and

Multiple VLAN Registration Protocol (MVRP) is a Layer 2 protocol. The protocol allows access points to propagate the VLAN created on CV-CUE to the connected Switches. The real-time propagation of configuration allows you the flexibility of configuring your wired and wireless network in one interface and distributing it to other active interfaces. You do not have to worry about managing and maintaining the configurations in all interfaces.

The NAT Application Gateway (ALG) feature allows FTP connections between client server to be translated using

NAT Peer State Synchronization feature provides redundancy and resiliency for Dynamic NAT across a pair of devices in an attempt to mitigate the risk of single NAT device failure. Each switch advertises connection state updates to its peer.  State update consists of connection creation, connection state change (TCP mostly) or connection tear down

In the 13.0 release, CloudVision Cognitive Unified Edge (CV-CUE) adds a new report and also includes some enhancements to existing reports.

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