Resiliency Enhancement for IPv4 and IPV6 Static Routes

The ExtremeXOS Resiliency Enhancement feature provides a resilient way to use Equal-Cost Multi-Path (ECMP) to load balance IPv4 traffic among multiple servers or other specialized devices. ExtremeXOS automatically manages the set of active devices using ECMP static routes configured with ping protection to monitor the health of these routes. Such servers or specialized devices do not require special software to support Bidirectional Forwarding Detection (BFD), or IP routing protocols such as OSPF, or proprietary protocols to provide keepalive messages. ExtremeXOS uses industry-standard and required protocols ICMP/ARP for IPv4 to accomplish the following automatically:

ExtremeXOS previously supported similar protection and resiliency using BFD on IPv4 static routes. However, BFD can only be used when the local and remote device both support BFD.

Supported Platforms

  • Summit X440, X450-G2, X460, X460-G2, X480, X670, X670-G2, and X770 series switches
  • BlackDiamond X8 and 8000 series switches
  • E4G-200 and E4G-400 cell site routers

New CLI Commands

configure iproute add [default | ipv4_or_ipv6_network] gateway {protection [bfd | ping |none]}

configure iproute {ipv4 | ipv6} protection ping interval seconds miss misses

enable iproute {ipv4 | ipv6} protection ping

disable iproute {ipv4 | ipv6} protection ping

show iproute {ipv4 | ipv6} protection ping {v4_or_v6_gateway} {vr vr_name} {detail}

Changed CLI Commands

The following are revised commands for the ExtremeXOS Resiliency Enhancement for IPv4 and IPv6 Static Routes feature:
  • The configuration settings for static route ping protection enable/disable, interval, and misses for IPv4 appear in the show ipconfig command, and for IPv6 in the show ipconfig ipv6 command.
  • A new route flag letter "I" appears in the show iproute and show ipconfig ipv6 commands to indicate static routes with ICMP ping protection. Flag letter "I" uses the same column as flag letter "b" because BFD and ping protection are mutually exclusive. If the route flags also show "U" for Up, then ping protection detected the gateway is up.