Brocade BigIron RX Series Configuration Guide - Manual (Page 604)

526 BigIron RX Series Configuration Guide
53-1002484-04
Multi-Chassis Trunking overview
20
• MCT client - The MCT client is the device that connects with the MCT peer switches through an
IEEE 802.3ad link. The client 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.
• ICL - A single-port or a multi-port 10 GbE interface between the two MCT peer switches. The ICL
link is typically a standard IEEE 802.3ad LAG interface, which carries packets for multiple
VLANs. The ICL ports can be a part of only MCT member VLANs and not regular VLANs. The ICL
ports must not be untagged members of any VLAN.
• Cluster Communication Protocol (CCP) - A Brocade proprietary protocol that provides reliable,
point-to-point transport to synchronize information between the peers. CCP comprises two
main components: CCP peer management and CCP client management. CCP peer
management deals with establishing and maintaining a TCP transport session between the
peers, while CCP client management provides event-based, reliable packet transport to the
CCP peers.
• 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
LAG interface is required with a member port on each of the peer switches.
• Cluster Edge Port (CEP) - A port on the MCT peer switches that is neither a CCEP nor an ICL
port.
• MCT VLANs - The VLANs on which MCT clients are operating. On the BigIron RX devices, only
MCT VLANs are configured over the ICL. These VLANs are explicitly configured in the MCT
configuration by the user.
NOTE
MAC learning is disabled on the ICL ports for MCT VLANs.
• MCT session VLANs - The VLAN used by the cluster for control operations. The CCP runs over
the VLAN. The interface can be a single link or a LAG port. If the interface is a LAG port, it must
be the primary port of the LAG.
NOTE
The subnet of MCT session VLANs is not distributed in routing protocols using redistribute
commands.
• RBridge ID - RBridge ID is a value assigned to the MCT nodes and clients to uniquely identify
the MCT nodes and clients. The RBridge ID helps in associating the source MAC address with
an MCT node.
• MAC Database (MDB) - The MDB can have multiple MAC entries for the same address.
• Forwarding MAC Database (FDB) - The FDB has only the best MAC entry installed.
• MAC Database Update (MDUP) - MDUP runs as an application over the CCP and installs only
the best MAC entry in the FDB.
• Cluster Local MACs (CL) - MAC entries that are learned locally from the VLANs that belong to
the cluster VLAN range and on CEP ports.
• Cluster Client Local MACs (CCL) - MAC entries that are learned on the VLANs that belong to the
cluster VLAN range and on CCEP ports.
• Cluster Remote MACs (CR) - MAC entries that are learned through the MDUP message from the
peer (CL on the peer).
• Cluster Client Remote MACs (CCR) - MAC entries that are learned through the MDUP message
from the peer (CCL on the peer).