• Author : Sabeesh


EVPN IRB with MPLS Underlay

EVPN Integrated Routing and Bridging (IRB) with MPLS In the traditional data center design, inter-subnet forwarding is provided by a centralised router, where traffic traverses across the network to a centralised routing node and back again to its final destination. In a large multi-tenant data center environment this operational model can lead to inefficient use of bandwidth and sub-optimal forwarding. To provide a more optimal forwarding model and avoid traffic tromboning, the EVPN inter-subnet draft (draft-ietf-bess-evpn-inter-subnet-forwarding-05) proposes integrating the routing and bridging (IRB) functionality directly onto the PE, thereby allowing the routing operation to occur as close to the end...
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BGP LU/SR (labeled-unicast with segment routing) support in multi-agent mode

This feature implements RFC3107 that allows carrying a label stack with BGP route updates, using multi-protocol BGP. It also implements segment routing extensions that allow accepting and carrying the transitive segment-index (SID) attribute in LU route updates. This implementation is for multi-agent mode. BGP LU for ribd mode is supported since 4.17.0F, see details in the following location: https://eos.arista.com/eos-4-17-0f/bgplu/ The following BGP LU features are supported starting from release 4.20.5F: Basic IPv4 BGP LU, both receiving LU updates and originating/re-advertising LU routes to other peers IBgp and EBgp peering for LU peers Using ISIS-SR (or other MPLS tunnels) as the...
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Arista EOS-4.20.1F TOI Index Page

Arista Platform Independent Features Config Checkpoint OpenConfig – NETCONF and Interface Counter Models eAPI – Support for multiple VRFs Connectivity Monitor CVX VIP VLAN Aware bundle mode for EVPN BGP route-map match on route-type Advertise-only option to the aggregate-address command Route-map URL BFD for Static routes IS-IS GR support IPv6 Neighbor Discovery Enhancements UCMP over Labeled Unicast Tunnels for IPv4 RFC 7606 – BGP enhanced error handling OSPFv3 Flood Pacing Support for BGP IPv6 Labeled Unicast MP-BGP for v4 Multicast BGP Monitoring Protocol L3 EVPN MPLS IPv6 RA inconsistent logging Redistribute static routes pointing to next-hop group via BGP Host...
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Igmp Snooping Proxy

IGMP Snooping Proxy feature is an optimization over IGMP snooping. When IGMP Snooping Proxy is enabled, the switch gathers IGMP reports from downstream hosts by sending queries periodically and updates its local state. Later, when it receives a query from an upstream router, the switch responds with a report immediately based on its local state. When IGMP Snooping Proxy is not enabled, IGMP Snooping floods the query in the VLAN for the hosts to respond with a report and the reports are flooded to ports that are known to have multicast routers. Enabling IGMP Snooping Proxy prevents a sudden burst...
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