Specifications

246 Implementing IBM System Networking 10Gb Ethernet Switches
2. Set the stacking membership mode.
On each switch, set the stacking membership mode by running boot stack mode
{master|member} (Example 6-2).
By default, each switch is set to Member mode. However, one switch must be set to
Master mode.
Example 6-2 Set stacking membership mode
ACC-3#boot stack mode master
Current switch stacking mode: Member
New switch stacking mode : Master
A Reboot is required for the new settings to take effect
ACC-3#
ACC-4#boot stack mode member
Current switch stacking mode: Member
New switch stacking mode : Member
ACC-4#
3. Configure the stacking VLAN.
On each switch, configure the stacking VLAN (or use the default setting) by running boot
stack vlan (Example 6-3).
Example 6-3 Configure stacking VLAN
ACC-3#boot stack vlan 4090
ACC-4#boot stack vlan 4090
4. Designate the stacking links
To create the preferred topology, at least two 10 Gb external ports on each switch should
be dedicated to stacking.
Run boot stack higig-trunk <list of port names or aliases> to specify the links to be
used in the stacking trunk (Example 6-4). In the reference architecture, ports EXT9 and
EXT10 are used for stacking.
Example 6-4 Designate stacking links
ACC-3#boot stack higig-trunk EXT9,EXT10
ACC-4#boot stack higig-trunk EXT9,EXT10
Important: Although any VLAN (except VLAN 1) may be defined for stack traffic, it is
preferable that the default, VLAN 4090, be reserved for stacking, as shown in
Example 6-3.
Important: By default, the 10 Gb Ethernet ports EXT1 and EXT2 are used.