Configuration Guide User guide

242 FastIron Configuration Guide
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Supported IronStack topologies
ICX 6610 stack topologies
In contrast to earlier generations of switches, ICX 6610 devices have four ports on their back
panels that are exclusively dedicated to stacking. These cannot be used as data ports, even when
stacking is not enabled.
These are the two 40-Gbps ports and two 4 x 10-Gpbs ports arranged in two rows. The top row
consists of port 1/2/1 and 1/2/2, and the bottom row has 1/2/6 and 1/2/7. Here ports 1/2/1
and 1/2/6 are 40G ports. Ports 1/2/2 and 1/2/7 are 4*10G ports. Refer to Figure 15.
You can create a stacking trunk by connecting one port of each type to ports of the same type on
another switch in the stack.
When creating a trunk, the two ports in the same row are always trunked, one 40G and one 4*10G
and they must connect to ports in the same row of another device. For example, one device has a
trunk consisting of 40-Gbps port 1/2/1 and a 4 x 10-Gbps port 1/2/2 on the top row, and one
trunk with the same pair type, 1/2/6 and 1/2/7, on the bottom row. If this device is being
connected to the next one in sequence, one of these rows must connect to 2/2/1 and 2/2/2, OR to
2/2/6 and 2/2/7.
FIGURE 15 Trunked stack port configuration on Brocade ICX 6610 devices
(1) Stack port n/2/1 (40G)
(2) Trunk 0
(3) Stack port n/2/2 (4*10G)
(4) Stack port n/2/6 (40G)
(5) Trunk 1
(6) Stack port n/2/7 (4*10G)
The two stacking trunks can form either linear or ring topologies. Figure 16 and Figure 17 show
fully connected linear and ring topologies. Both cables of each trunk are connected.
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