Configuration Guide User guide

FastIron Configuration Guide 847
53-1002494-02
Layer 2 behavior with MCT
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Cluster Multi-Destination Remote MAC (CMR): A static MAC entry is configured on MCT VLAN on the
peer side and there is no associated local configuration. The CMR entry has only the remote MDB.
The port list of a CMR entry has an ICL port, and all the client ports from the client list in the remote
configuration. When there is local configuration for the same entry, the CMR is converted to CML.
MAC aging
Only the local MAC entries are aged on a cluster device. The remote MAC address entries are aged
based on explicit MDUP messages only.
The remote MAC addresses learned through MDUP messages are dynamic addresses with the
exception that they never age from FDB.
MAC flush
If the CEP is down, the MAC addresses are flushed and individual MAC deletion messages are sent
to the peer device.
If the CCEP local port is down, the MAC addresses are flushed locally and individual MAC deletion
messages are sent to the peer device.
If the clear mac command is given, all the MDB and FDB are rebuilt.
If the clear mac vlan command is given, all the local MDB and FDB are rebuilt for that VLAN.
MAC movement happens normally on the local device.
CEP to CCEP MAC movement – MAC movement normally happens on the local device, and deletes
all the other MDBs from the peer to create a new local MDB.
MAC show commands
To display all the cluster local MAC address entries for a cluster, use the show mac cluster
command.
Syntax: show mac [cluster <id>|<name> <local>| <remote>]
MAC clear commands
To clear all MAC addresses in the system, enter the following command.
Brocade#clear mac
Syntax: clear mac
Clearing cluster-specific MAC addresses
To clear cluster-specific MAC addresses in the system, enter a command such as the following.
Brocade#show mac cluster 1000
Total Cluster Enabled(CL+CR+CCL+CCR) MACs: 1
Total Cluster Local(CL) MACs: 1
CCL: Cluster Client Local CCR:Cluster Client Remote CL:Local CR:Remote
Total active entries from all ports = 1
Total static entries from all ports = 3
MAC-Address Port Type Index MCT-Type VLAN
1111.2222.3333 8/1 Static 4254 CML 20
1111.2222.3333 8/3 Static 4254 CML 20
1111.2222.3333 8/13 Static 4254 CML 20