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7-4
ES3000 Advanced Concept Guide
7.2.2.2 Modifying
On the Add Group page, the administrator can modify a link aggregation group in one of two ways:
• By clicking the Modify button next to the group. When the Link Aggregation Modify page
appears, the administrator can change the group mode and then either add or remove ports
for the group. Click Apply to modify the group. If selected ports do not form a valid group,
the web interface generates an error message and refuses to make the change.
• By entering an existing Group Key in the Group Key box. The administrator can select a new
mode, and add ports to the group directly on the Add Group page. Click Apply to make the
changes. Take care to set the mode appropriately or the mode returns to the default of
Manual.
7.2.2.3 Deleting a Link Aggregation Group
To delete a group using the Add Group page click the group's Modify button. When the Link
Aggregation Modify page appears, de-select all group members, and click Apply. The web interface
returns to the Add Group page, which no longer displays the group.
7.2.3 Setting Priorities
The LACP uses priorities to determine which links of a group take precedence for LACP transmission.
It also uses priorities to determine which port to use if one of the links fails. The combination of
system and port priority determines which ports take precedence when a link fails.
7.2.3.1 Setting System Priority
In LACP negotiation, the partner with the highest system priority determines which links are active
and which are in standby for each link aggregation group.
Using the System Priority page (Ports > Link Aggregation > System Priority) the administrator can set
the global system priority value for LACP. Valid priorities range from 0 to 65535, where the lower value
has the higher priority. The default system priority is 1.
7.2.3.2 Setting Port Priority
Using the Port Priority page (Ports > Link Aggregation > PortPriority) the administrator can set the
priority value for individual ports. The lower the value, the higher the port priority. When two ports
have equal priority, the lower port number has the higher priority. The default priority for all ports is 1.
The value can range from 0 to 255. Enter port and priority values and click Apply. The port priorities
are displayed over successive pages. Click the Next button to see additional ports.
a Link Aggregation Group
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