Connecting Icx 6610 Devices In The Backbone - Brocade Communications Systems ICX 6430 Installation Manual

Topology 4: ring with one backbone device
In Figure
devices in a ring topology. There is one substack that contains all six peripheral devices.
Topology 4 shows that you can have a mixed stack with only one ICX 6610 device, although it does
not provide high availability or resiliency for the stack because there is no standby controller.
FIGURE 38
ICX 6610
Topology recommendations
Consider these factors when you implement a topology:
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Connecting ICX 6610 devices in the backbone

Figure 39
(ports 1 and 2) in trunk 0 of each ICX 6610 device. Ports 1 and 2 in the top device connect to ports
1 and 2 in the bottom device, respectively.
Brocade ICX 6430 and ICX 6450 Stackable Switches Hardware Installation Guide
53-1002738-02
38, one ICX 6610 device forms the backbone and there are six ICX 6450 peripheral
Topology 4: ring with one backbone device
Limit the number of VLANs of peripheral devices to reduce broadcast and multicast packets
flooding to the peripheral devices.
Broadcast and multicast packets of a VLAN are flooded to a substack if the substack has any
ports in the VLAN. For this reason, you should limit (localize) VLAN association of substack
ports.
For example, substacks 1 and 2 have ports in VLAN 10, 11, 12, and 13. In this case, you
should arrange the VLAN port association so that substack 1 ports are in VLAN 10, 11, and 12
and substack 2 ports are in VLAN 12 and 13. Such an arrangement avoids flooding packets in
VLAN 13 to substack 1, and also avoids flooding packets in VLAN 10 and 11 to substack 2.
A ring topology is more resilient than a linear topology.
If there are two backbone devices, link substacks to both backbone devices.
To prevent traffic congestion and avoid potential latency issues, keep substacks small —
especially in linear topologies.
shows how to connect ICX 6610 devices in a mixed stack backbone using both ports
Connecting devices in a mixed stack
ICX 6450 ICX 6450
ICX 6450 ICX 6450
ICX 6450
ICX 6450
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