3Com Switch 7750 Configuration Guide

192 CHAPTER 23: LINK AGGREGATION CONFIGURATION
■ When a dynamic aggregation group or a static aggregation group is changed
into a manual aggregation group, the system will disable LACP on all the
member ports automatically. When a dynamic aggregation group is changed
into a static aggregation group, LACP on all the member ports remains
enabled.
Note that if a manual aggregation group or a static aggregation group contains
only one port, this port cannot be removed from the aggregation group. Instead,
it can be removed from the aggregation group only in the way of removing the
aggregation group.
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If you use the save command to save the current configuration and then restart
the device, the configured manual/static aggregation groups and their
descriptions still exist, however, the dynamic aggregation groups will disappear
and their descriptions cannot be restored.
Configuring Parameters
for HASH
Through the following configuration tasks, you can configure parameters used by
the HASH algorithm in link aggregation, thus controlling load balancing on
aggregated ports effectively.
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■ All the seven parameters are available on type-A I/O Modules including
3C16860, 3C16860, 3C16861, 3C16861, LS81FS24A, LS81FS24, 3C16858,
3C16858, 3C16859, and 3C16859.
■ None of the above seven parameters are available on non-type-A I/O Modules.
■ Only type-A I/O Modules support l4port.
Displaying and
Maintaining Link
Aggregation
Configuration
After the above configuration, execute the display command in any view to
display the running status after the link aggregation configuration and verify your
configuration.
Execute the reset command in user view to clear LACP statistics on ports.
Table 125 Configure parameters for HASH
Operation Command Description
Enter system view system-view -
Configure parameters used by
the HASH algorithm in link
aggregation
hash { dstip | dstmac | ip |
l4port | mac | srcip |
srcmac }{ioboard slot
slot-number | mainboard }
By default, Type A I/O
Modules use four-tuple
(dstip, dstmac, srcip and
srcmac) as the parameter of
HASH algorithm. I/O Modules
other than Type A use ip as
the parameter of HASH
algorithm.
Table 126 Display and maintain link aggregation configuration
Operation Command
Display summary information of all
aggregation groups
display link-aggregation summary
Display detailed information of a specific
aggregation group or all aggregation groups
display link-aggregation verbose agg-id