Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 626)

596 Multi-Service IronWare Switching Configuration Guide
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About Multi-Chassis Trunk (MCT)
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MCT peers
Each MCT physical node, A and B, will act as an MCT peer and they are connected using an ICL. The
pair of MCT peers will act as one logical switch for the access switch or server so that the MCT pair
can connect using standard LAG to them. This is illustrated in
Figure 174 .
FIGURE 174 MCT peers
ICL traffic handling
An ICL link on the Brocade device can be a single port or a static or LACP LAG. Non-MCT VLANs can
co-exist with MCT VLANs on the ICL only on the Brocade MLX series and NetIron XMR . For MCT
VLANs, MAC learning is disabled on ICL ports.
MCT Active-Passive mode
Using the MCT Active-Active mode, both MCT nodes will be Active forwarding the traffic coming from
the client nodes on the CCEP links.
Using the MCT Active-Passive mode, the CCEP ports on one of the MCT nodes will be made Passive
by blocking, and the other MCT node will be Active.
To enable MCT Active-Passive mode to work, both MCT nodes must be configured with the
ACTIVE-PASSIVE feature. If only one node is configured, then cluster CCP session will not come up.