Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 837)

Multi-Service IronWare Switching Configuration Guide 807
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Configuring IP load sharing
19
Options for IP load sharing and LAGs
The following options have been added to refine the hash calculations used for IP load sharing and
LAGs. These include the following:
• Speculate UDP or TCP Headers – This option is applied to ECMP and LAG index hash
calculations.
• Mask Layer-3 and Layer-4 Information – This option is applied to ECMP and LAG index hash
calculations.
• Mask Layer-2 Information – This option is applied to ECMP and LAG index hash calculations.
• Mask MPLS label information - This option is applied to ECMP and LAG index hash
calculations.
• Diversification – This option is applied to ECMP and LAG index hash calculations.
• Hash Rotate – This option is applied to ECMP hash calculations and to LAG index calculations.
• Symmetric - This option is applied to trunk hash calculations.
NOTE
The Brocade NetIron CES devices do not support the same options as the Brocade NetIron XMR and
Brocade MLX series devices. Refer to the Brocade NetIron CES and Brocade NetIron CER Link
Aggregation chapter for additional information on hash calculations used for IP load sharing and
LAGs on the Brocade NetIron CES devices.
Speculate UDP or TCP packet headers
With this option set, the packet headers following IPv4 headers are used for the ECMP and LAG
index hash calculations even if the packet is not a TCP or UDP packet. If the packet is a
non-fragmented. no-IP options, true TCP or UDP packet, the TCP or UDP ports will be used for hash
calculations unless the load-balance mask ip or load-balance mask ipv6 commands are used. This
behavior is off by default and can be enabled using the following command.
Brocade(config)# load-balance force-l4-hashing all
TABLE 95 Default load sharing parameters for route sources
Route source Default maximum number of paths Maximum number of paths
Static IP route 4
NOTE: This value depends on the
value for IP load sharing, and
is not separately configurable.
32
NOTE: This value depends on
the value for IP load
sharing, and is not
separately
configurable.
RIP 4
NOTE: This value depends on the
value for IP load sharing, and
is not separately configurable.
8
NOTE: This value depends on
the value for IP load
sharing, and is not
separately
configurable.
OSPF 4 32
BGP4 1 32