Brocade Communications Systems 8/80 Service Manual download pdf (Page 53)

Switching and Routing

Table 2.7 shows examples of the ports from Figure 2.5 that will be eligible for an aggregate link based on individual

port states.

As shown in these examples, all or a subset of the ports within a port range will be eligible for formation into an

aggregate link based on port states. Notice that the sets of ports that are eligible for the aggregate link must be

valid static trunk configurations. For example, a 4-port link consisting of ports 1/4 – 1/7 is not valid because this

port configuration is not valid for static trunk groups on the Brocade device.

Enabling Link Aggregation

By default, link aggregation is disabled on all ports.

NOTE: Configuration commands for link aggregation differ depending on whether you are using the default link

aggregation key automatically assigned by the software, or if you are assigning a different, unique key or if you are

assigning a key on a port on which link aggregation is already enabled. Follow the apropriate commands below.

Enabling Link Aggregation and Using the Default Key

Use this command to enable link aggregation on ports on which link aggregation has not been enabled if you want

the software to assign a link aggregation key.

ServerIron(config)# interface ethernet 1/1

ServerIron(config-if-e1000-1/1)# link-aggregate active

ServerIron(config)# interface ethernet 1/2

ServerIron(config-if-e1000-1/2)# link-aggregate active

Syntax: [no] link-aggregate active | passive | off

Note that these ports will use the default key, since one has not been explicitly configured. Also, the commands in

this example enable the active mode of link aggregation on ports 1/1 and 1/2. The ports can send and receive

LACPDU messages.

Table 2.7: Port Eligibility for Link Aggregation

Port Group 1 Port Group 2 Port Group 3 Port Group 4 Trunk

Eligibility

1/1 1/2 1/3 1/4 1/5 1/6 1/7 1/8

Link

State

Up Up Up Up Up Up Up Up 8-port

1/1 – 1/8

Up Up Up Up Up Down Up Up 8-port

1/1 – 1/8

Up Up Up Up Up Down Up Down 8-port

1/1 – 1/8

Up Up Up Up Down Down Down Up 4-port

1/1 – 1/4

Down Down Down Up Up Up Up Up 4-port

1/5 – 1/8

Up Down Down Down Up Down Down Down 2-port

1/1 – 1/2

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 61 62

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Brocade Communications Systems 8/80 Service Manual Page 53