R3303-HP HSR6800 Routers IRF Configuration Guide

11
Configuring IRF
To ensure a successful IRF setup, read the configuration restrictions and guidelines carefully before you
connect and set up an IRF fabric.
General restrictions and configuration guidelines
Software requirements
All IRF member devices must run the same system software image version.
MPU and IRF physical port restrictions
• You can only use the 10-GE fiber ports on the SAP-4EXP cards for IRF connection.
• Make sure every IRF member has at least one MPU.
• When you connect two neighboring IRF members, connect the physical ports of IRF-port 1 on one
member to the physical ports of IRF-port 2 on the other.
IRF link redundancy
• For link redundancy and load sharing, bind up to four physical ports to one IRF port.
• Physical ports bound to an IRF port can be located on different cards.
MAD
• Configure at least one MAD mechanism for prompt detection and recovery of IRF split.
• If LACP MAD or ARP MAD runs between two IRF fabrics, assign each fabric a unique IRF domain
ID. For BFD MAD, this task is optional.
• To exclude a port from the shutdown action executed when an IRF fabric transits to the Recovery
state, use the mad exclude interface command. To bring up a port after the IRF fabric transits to the
Recovery state, you must use the mad restore command to activate the entire IRF fabric, rather than
using the undo shutdown command.
Other configuration guidelines
• If a subordinate device uses the same next-startup configuration file name as the master device, the
file might be overwritten depending on your configuration file management settings. To continue to
use the configuration file after removing the device from the IRF fabric, back up the file before setting
up the IRF fabric.
• Strictly follow the IRF fabric setup procedure described in "Setup and configuration task list" to pla
n
the IRF fabric, identify IRF physical ports, connect IRF member devices, and configure basic settings.