IPv6 ECMP and 32-Way ECMP

This feature adds IPv6 Equal-Cost Multi-Path (ECMP) support on several new platforms. Additionally, it adds support for 16-way and 32-way ECMP (for both IPv4 and IPv6), using static routes, and up to 8-way ECMP for IPv4 and IPv6 using routing protocols .

Sharing ECMP gateway sets now applies to IPv6 as well as IPv4. Sharing ECMP gateway sets for IPv6 means the entire IPv6 Longest-Prefix Match (LPM) hardware capacity can use ECMP, across up to 32 gateways.

Feature Description

This feature adds IPv6 ECMP support on the following platforms:

Summit stack and standalone models, except for the Summit X440 platform.
BlackDiamond 8000, all I/O modules.
BlackDiamond X8, all I/O modules.

Additionally, ExtremeEXOS supports 16-way and 32-way ECMP for both IPv4 and IPv6 using static routes, and up to 8-way ECMP for IPv4 and IPv6 using routing protocols. Now, the maximum number of gateways in each IPv4 or IPv6 gateway set in the ECMP hardware table can be configured as 16 or 32.

The following platforms support ECMP only for IPv6 routes whose mask length is <= 64-bits:

BlackDiamond 8K I/O modules: G48Te2, G24Xc, G48Xc, G48Tc, 10G4Xc, 10G8Xc, S-G8Xc, S-10G1Xc, S-10G2Xc.

Published March 2020prev | next

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