SmartConnect User’s Guide

6.Physically connect the Stack Trunks in a bidirectional ring topology.

It is recommended that two 10Gb external ports on each switch are dedicated to stacking. As shown in Figure 4-A, starting with the Master switch, connect each switch in turn to the next. Connect the last Member switch back to the Master to complete the ring.

Switches

connected in bidirectional ring topology

Master

Server

Switch

 

 

Server

 

Server

Member

Server

Switch

Blade Server Chassis 1

Member

Server

Switch

 

 

Server

 

Server

Member

Server

Switch

Blade Server Chassis 2

Figure 4-AExample of Stacking Connections

Once the stack trunks are connected, the switches perform low-level stacking configuration.

Note – It is recommended not to disconnect and reconnect the stack links after the stack is formed. If the stack links are disconnected, stack operation can become unstable as the stack reconfigures, and traffic can be disrupted, causing data loss.

7.On the designated Master switch, configure the Master interface for the stack.

>># cfg/stack/mif

>>Master Switch Interface# addr 10.10.1.1

>>Master Switch Interface# mask 255.255.0.0

>>Master Switch Interface# gw 10.10.20.2

Note – The mif menu is available only on the Master switch once the stacking mode has been set (Step 4) and the switch has been rebooted (Step 5).

BMD00082, February 2009

Chapter 4: Stacking „ 49

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IBM Partner Pavilion BMD00082 manual # cfg/stack/mif