EOS 4.21.0F TOI

Ahost is a generic Fedora based Linux OS primarily for the purposes of hosting cEOS. It has a 64 bit kernel (EosKernel)

ASU allows a user to upgrade the switch to a newer software release with minimal downtime (no traffic loss). In some

BGP Conditional route inject provides the capability to control BGP advertisements based on certain conditions in

Prior to this release, BGP in “ribd” mode (when routing protocols are configured in

DCS 7280SRM 40CX2 (see picture below), is a 1RU fixed system, which has two CFP2 ports (41 and 42), capable of hosting

The show interfaces capabilities default command provides static interface capability information.  This

Coherent signaling technology is used for data transmission over long distances. These transmitted signals are

Note:. EOS 4.21.0F and subsequent releases may require manual updates to frequency or channel and grid spacing in

Headroom buffers are used to store packets when ingress admission control checks fail to store them in both the

DHCP relay agent uses one of the addresses configured on the interface as the source IP when relaying messages to the

This feature allows Dhcpv6 relay agent to add Client link layer address option (specified in RFC 6939) to solicit and

DHCPv6 relay supports Remote ID option (37) insertion in relay messages providing the Layer 3 interface name on which

The feature allows to create a named TC to DSCP mapping that can be applied on an interface.DSCP of routed packets egressing out of the interface will be rewritten according to the map.

EVPN route advertisements carry RD and RT. RD (Route Distinguisher) : prepend to the tenant’s IP Prefix or MAC address to make it globally unique. RT (Route Target) : a BGP extended community used to tag the EVPN route.  The EVPN import policy is chosen to select what is the target tenant VRF is imported from the global EVPN table.

Network operators have to monitor all kinds of information on the health of their networking equipment like

Hierarchical Forwarding Equivalence Class (HFEC) changes a FEC from a single flat level to a multi level FEC

IPv6 multicast routing protocols are used to distribute IPv6 datagrams to one or more recipients. IPv6 PIM builds and

This feature adds support for PIM SSM (Source Specific Multicast) for IPv6 Multicast Routing on platforms listed

The 'clear isis neighbor' command can be used to delete and possibly re establish IS IS adjacencies on a box. Issuing

This feature allows user to configure adjacency SID of global scope for IS IS adjacencies. It is an extension to IS IS

Normally, a switch traps L2 protocol frames to the CPU. However, certain use-cases may require these frames to be forwarded or dropped. And in cases where the L2 protocol frames are forwarded (eg: Pseudowire), we may require the frames to be trapped to the CPU or dropped. The L2 Protocol Forwarding feature provides a mechanism to control the behavior of L2 protocol frames received on a port or subinterface.

Lanz Mirroring feature allows users to automatically mirror traffic queued as a result of congestion to either CPU or a different interface.

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

A MACsec port with this feature enabled transmits LLDP frames without MACSec encryption and receives LLDP frames

IP traceroute and path MTU (PMTU) discovery both require that routers send ICMP reply messages to the host that invokes each network function. When the route to the destination host traverses an MPLS label-switched path (LSP), the label switching routers (LSRs) will also need to send ICMP reply messages to the originating host.

The MLD protocol is the IPv6 equivalent of IGMP for IPv4. Multicast routers use MLD to find out about multicast

This feature provides per multicast route ingress packet and byte counters for multicast routed packets.

This article describes the configuration to match on Ipv4 packets based on packet length in Access control

DCS 7160. Host table partitioning provides the ability to change the allocation of MAC and host route tables on a

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

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.

This feature allows users to view most recent history of offset from master, mean path delay and skew values via CLI

QinQ L3 subinterfaces divide a single ethernet or port channel interface into multiple logical L3 interfaces based

This feature is an extension of Qos Policy. It allows the user to configure Qos Policy Map counters. If a class map is

Starting in the EOS 4.21.0F release, reload console logs are available to help in debugging of unexpected reloads.

RIB Route Control is a collection of mechanisms for controlling how IP routing table entries get used.  FIB Policy

Segment Routing Traffic Engineering Policy (SR TE) aka SR Policy makes use of Segment Routing (SR) to allow a headend

The Segment security feature provides the convenience of applying policies on segments rather than interfaces or

The feature allows modification of the egress TTL of packets routed via PBR. It allows to modify the TTL of naked

These are the release notes and configuration guide for the OpenConfig feature in the 4.21.0F release.

This feature enables the user to configure PBR policy on an interface in any VRF, to match and forward incoming packets

This article describes how QoS attributes are handled on tap ports as of EOS 4.20.5F. Prior to EOS 4.20.5F, QoS

As of EOS 4.21.0F, CLI commands can specify different TCAM profiles for different linecards in Tap Aggregation mixed

While in Tap Aggregation mode, we support traffic only in one direction through either Tap ports receiving packets

This feature enables user to configure the list of bytes from the packet which can be used for Lag/Ecmp hashing in the

Unicast Reverse Path Forwarding (uRPF) can help limit malicious traffic on a network. uRPF works by enabling the

This feature is available in the VLAN configuration mode. When a switch receives a packet with unknown