Mct terminology – Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) User Manual
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Multi-Service IronWare Switching Configuration Guide
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About Multi-Chassis Trunk (MCT)
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MCT terminology
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MCT peer switches: A pair of switches connected as peers through the ICL. The LAG interface is
spread across two MCT peer switches and it acts as the single logical endpoint to the MCT
client.
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MCT client: The MCT client is the device that connects with MCT peer switches through an IEEE
802.3ad link. It can be a switch or an endpoint server host in the single-level MCT topology or
another pair of MCT switches in a multi-tier MCT topology.
•
MCT Inter-Chassis Link (ICL): A single-port or multi-port GbE or 10 GbE interface between the
two MCT peer switches. This link is typically a standard IEEE 802.3ad Link Aggregation
interface. ICL ports should not be untagged members of any VLAN. The ICL is a tagged Layer 2
link, which carries packets for multiple VLANs. MCT VLANs are the VLANs on which MCT clients
are operating. On the Brocade NetIron XMR or Brocade MLX series, non-MCT VLANs can
co-exist with MCT VLANs on the ICL. However, on the Brocade NetIron CES and Brocade NetIron
CER, only MCT VLANs are carried over ICL.
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MCT Cluster Communication Protocol (CCP): A Brocade proprietary protocol that provides
reliable, point-to-point transport to synchronize information between peers. CCP comprises two
main components: CCP peer management and CCP client management. CCP peer
management deals with establishing, and maintaining TCP transport session between peers,
while CCP client management provides event-based, reliable packet transport to CCP peers.
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MCT Cluster Client Edge Port (CCEP): A physical port on one of the MCT peer switches that is a
member of the LAG interface to the MCT client. To have a running MCT instance, at least one
Link Aggregation Interface is needed with a member port on each peer switch.
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MCT Cluster Edge Port (CEP): A port on MCT peer switches that is neither a Cluster Client Edge
Port nor an ICL port.