Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 165)

FIGURE 31 Basic MCT configuration
MCT configuration considerations
• Configuring flow-based MAC address learning and MCT on the same device is not supported.
• When running STP, the STP state should be the same on both cluster devices. For additional
information on running STP with MCT, refer to "STP/RSTP" under MCT Layer 2 protocols and to
related configuration examples.
• One ICL can be configured per device, and a device can be in only one cluster.
• The software version in both cluster devices must be exactly the same for the cluster to function.
• An ICL port should not be an untagged member of any VLAN.
• It is recommended that you set up ICL as a static LAG with at least two ports. This provides port-level
redundancy and higher bandwidth for cluster communication.
• ICL ports must be part of MCT VLANs and session VLANs.
• An ICL cannot be a regular port link or an LACP trunk. It must be a single or multiple ports static
LAG.
• MAC learning is disabled on ICL ports for all VLANs.
• MDUP synchronizes all MAC entries for VLANs served by an ICL link.
• In any MCT configuration, there are two different cluster-related IDs, the Cluster ID and the Cluster
RBridge ID. The Cluster ID uniquely identifies a cluster. All cluster devices in the same MCT cluster
have the same Cluster ID. The Cluster RBridge ID uniquely identifies a cluster device within the
MCT configuration considerations
FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide 165
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