Tag :: ECMP

It is often useful to know on a per AFI/SAFI basis, the number of paths that have been selected from a peer as best paths.

This feature provides a mechanism to mark specific routes as resilient ECMP (RECMP) eligible using BGP RCF policies. A policy based mechanism provides a lot of flexibility in choosing the RECMP eligible routes using criteria such as:

Routes covered by a resilient equal-cost multi-path (RECMP) prefix are types of routes that make use of hardware tables dedicated for equal-cost multi-path (ECMP) routing.

ECMP Hash visibility CLI determines the output interface for an ECMP set based on the flow parameters supplied by the user. Ingress interface, source IP address, destination IP address and IP protocol are the required parameters.

ECMP Hash visibility CLI determines the output interface for an ECMP set based on the flow parameters supplied by the user. Ingress interface, source IP address, destination IP address and IP protocol are the required parameters. L4 source and destination ports and VLAN identifier are optional, but should be specified if the packet has them.

As of 4.22.1F Load Balance Profiles can be used to explicitly configure ECMP Load Balance parameters. In addition,

A forwarding equivalence class (FEC) entry is the data structure that holds all reachable vias where the packets should be sent to, for certain routes. Before this feature, a FEC could not contain both IPv4 next hop vias and IPv6 next hop vias. This feature starts supporting FECs that have both IPv4 next hop vias and IPv6 next hop vias. In an Equal Cost Multi-Path (ECMP) FEC, some of the vias may have IPv4 next hop and others may have IPv6 next hop. 

On network devices, when a route is programmed, a certain portion of hardware resources is allocated and associated

Introduced in EOS-4.20.1F, “selectable hashing fields” feature controls whether a certain header’s field is used in the hash calculation for LAG and ECMP.

EOS version 4.24.1F introduces support for specifying multiple vias to form ECMP in MPLS static tunnels. A new

Multipath color is a new multicast multipath mode for controlling PIM RPF selection. In the default multipath

Routes covered by a resilient equal-cost multi-path (RECMP) prefix are types of routes that make use of hardware tables dedicated for equal-cost multi-path (ECMP) routing. Resilient ECMP deduping is a new feature wherein the switch will reactively attempt to reduce the number of ECMP hardware table entries allocated by forcing routes that share the same set of next hops but point to different hardware table entries to point to the same hardware table entry when hardware resource utilization is high. Forcing RECMP routes to change the hardware table entry that they point to may potentially cause a traffic flow disruption for any existing flows going over that route. The deduping process will attempt to minimize the amount of potential traffic loss caused.

RSVP-TE, the Resource Reservation Protocol (RSVP) for Traffic Engineering (TE), is used to distribute MPLS labels for steering traffic and reserving bandwidth. The Label Edge Router (LER) feature implements the headend functionality, i.e., RSVP-TE tunnels can originate at an LER which can steer traffic into the tunnel.

This feature adds the support for learning multiple equal cost routes for a destination in the RIP protocol. This

Nexthop groups is a routing mechanism where users can configure a set of nexthops by specifying their nexthop

In the ribd routing protocol model, the “maximum paths … ecmp …” command allows restricting the number of BGP