Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 141)

Multi-Service IronWare Switching Configuration Guide 111
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LAG formation rules
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• The router can support up to 256 LAGs, and each LAG can contain up to 64 member ports.
• If the router is configured to support 32 LAGs by using the system-max trunk-num
command, the maximum number of LAG ports is 64.
• If the router is configured to support 64 LAGs by using the system-max trunk-num
command, the maximum number of LAG ports is 32.
• If the system-max trunk-num is set to 256, the maximum number of LAG ports supported
is 8.
• The default system-max trunk-num is set to 128, and each LAG can have up to 16 member
ports
• For 40G and 100G ports, the number of LAG FIDs is 128. The configurable ranges are
from 2 to 64 LAGs.
• When configuring a static or dynamic LAG, if trunk load sharing type is set to “per-packet” the
maximum number of “per-packet” trunks is set to 4.
• Ports can be in only one LAG group. All the ports in a LAG group must be connected to the
same device at the other end. For example, if port 1/4 and 1/5 in Device 1 are in the same
LAG group, both ports must be connected to ports in Device 2 or in Device 3. You cannot have
one port connected to Device 2 and another port connected to Device 3.
• All LAG member properties must match the primary port of the LAG with respect to the
following parameters:
• Port tag type (untagged or tagged port)
• Port speed and duplex
• TOS-based Configuration – All ports in the LAG must have the same TOS-based QoS
configuration before LAG deployment, During deployment the configuration on the primary
port is replicated to all ports and on undeployment, each port inherits the same TOS-based
QoS configuration.
To change port parameters, you must change them on the primary port. The software
automatically applies the changes to the other ports in the LAG.
• Using the system-max trunk-num num command, the device can support the following
LAG/member port configurations:
• 256 LAGs with each containing 8 member ports.
• 128 LAGs with each containing 16 member ports.
• 64 LAGs with each containing 32 member ports.
• 32 LAGs with each containing 64 member ports.
• Using the system-max trunk-num-100g num command, the device can support the following
40 GbE and 100 GbE LAG scalability configurations.
• 64 LAGs with each containing 2 member ports.
• 32 LAGs with each containing 4 member ports.
• 16 LAGs with each containing 8 member ports.
• 8 LAGs with each containing 16 member ports.
• 4 LAGs with each containing 32 member ports.
• 2 LAGs with each containing 64 member ports.
• The total number of ports in a trunk is controlled by the system-max trunk-num command for
both non-100G and 100G trunks.