• Author : Saravanan Balasubramanian

 
 

Multicast Traffic in Vxlan Using Underlay

Description 4.21.3F introduces support for Multicast Traffic in Vxlan Using Underlay in the platforms listed below. The TOI for the support in earlier versions/platforms is available here. Platform compatibility DCS-7050QX2, DCS-7050SX2, DCS-7050TX2 DCS-7050CX3, DCS-7050SX3 DCS-7300X3 series

PIM Non-stop Forwarding

Pim supports non-stop forwarding of traffic during the following events: ASU2 image upgrade on 7050 and 7060 platforms and during SSO on 7500 platforms. This document describes how PIM non-stop forwarding works and its limitations. How PIM NSF works? After a NSF event, the hardware continues to forward multicast traffic based on the previously programmed routes. These routes in hardware are untouched while the PIM agents re-learns all the routes. For PIM to relearn the routes, it recovers all (S,G)s and its incoming interfaces from the hardware. The OIF set is not recovered. When the Pim agent starts, it will...
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Multicast Traffic in Vxlan Using Underlay

This document provides an Arista specific solution to deliver multicast traffic in a Vxlan environment where L2 subnet has been extended over an L3 cloud. Prior to 4.20.5F, multicast traffic ingressing on a Vxlan VLAN would be flooded to all Vxlan Tunnel Endpoints (VTEPs), which may not be optimal in terms of bandwidth utilization. The solution described below uses PIM in the underlay to build a path between source and receivers. There are two main parts: Injecting the source IP address ( an address in the overlay ) into the underlay, which is needed for RPF checks. All link local...
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