H3C Technologies H3C S12500 Series Switches - Manual (Page 22)

14
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.
IRF size
An S12500 IRF fabric can have up to four chassis.
MPU and IRF port restrictions
• Make sure every IRF member has at least one MPU.
• Any fiber or copper Ethernet ports can be used for IRF connection. H3C recommends using 10-GE
fiber ports for high performance.
• When you connect two neighboring IRF members, connect IRF-port 1 on one member to IRF-port 2
on the other.
Suppose you have four chassis: A, B, C, and D. IRF-port 1 and IRF-port 2 are represented by A1
and A2 on chassis A, represented by B1 and B2 on chassis B, and so on. To connect the four
chassis into a ring topology of A-B-C-D(A), the IRF link cabling scheme must be one of the
following:
{
A1-B2, B1-C2, C1-D2, and D1-A2.
{
A2-B1, B2-C1, C2-D1, and D2-A1.
IRF link redundancy
• For link redundancy and load sharing, bind up to 12 physical ports to one IRF port.
• Physical ports bound to an IRF port can be located on different cards.
• H3C recommends using multicard IRF links to avoid a card removal causing an IRF split.
Feature and IRF mode compatibility
To form an IRF fabric:
• All member devices in the IRF fabric must work in the same system operating mode. For more
information about the system operating mode, see Fundamentals Configuration Guide.