Configuration Guide User guide

FastIron Configuration Guide 725
53-1002494-02
Dynamic link aggregation
To disable link aggregation on a port, enter a command such as the following.
Brocade(config-if-e1000-1/8)#link-aggregate off
Syntax: [no] link-aggregate active | passive | off
Syntax: [no] link-aggregate configure [system-priority <num>] | [port-priority <num>] | [key
<num>]
NOTE
For more information about keys, including details about the link-aggregate and link-aggregate
configure commands, refer to “Key” on page 726.
How changing the VLAN membership of a port
affects trunk groups and dynamic keys
When you change a port VLAN membership and the port is currently a member of a trunk group,
the following changes occur to the trunk group:
• The Brocade device tears down the existing trunk group.
• All ports in the trunk group get a new key.
• The new key group aggregates into a new trunk group.
When you change a port VLAN membership, and the port is not a member of a trunk group, the
following changes occur:
• The port gets a new key depending on changes to the port VLAN tag type, as follows:
- Tagged to Tagged VLAN – The primary port of the trunk group gets a new key.
- Tagged to Untagged VLAN – The port gets the default key for untagged ports.
- Untagged to Tagged VLAN – If the Brocade device finds a port with matching port
properties, the port gets that port key. If it does not find one, the port gets a new key.
- Untagged to Untagged VLAN – The port gets a new key depending on whether it is in the
default VLAN. If there is a trunk group associated with the key, it is not affected.
• All other ports keep their existing keys.
• The new key groups try to aggregate into trunk groups.
Additional trunking options for LACP trunk ports
Additional trunking options are supported on individual ports that are part of an 802.3ad
aggregate link. Refer to “Additional trunking options” on page 711.
Link aggregation parameters
You can change the settings on individual ports for the following link aggregation parameters:
• System priority
• Port priority
• Timeout
• Key