HP 5300 Informações Técnicas descarregar pdf (Página 230)

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101

Port Trunking

CLI: Viewing and Configuring Port Trunk Groups

Enabling a Dynamic LACP Trunk Group. In the default port configura-

tion, all ports on the switch are set to LACP Passive. However, to enable the

switch to automatically form a trunk group that is dynamic on both ends of

the link, the ports on one end of a set of links must be LACP Active. The ports

on the other end can be either LACP Active or LACP Passive. This command

enables the switch to automatically establish a (dynamic) LACP trunk group

when the device on the other end of the link is configured for LACP Passive.

Switch “A”

with ports set

to LACP

passive (the

default).

Switch “B”

with ports set

to LACP

passive (the

default).

Dynamic LACP trunk cannot automatically form because both

ends of the links are LACP passive.

(In this case STP blocking is needed to prevent a loop.

Switch “A”

with ports set

to LACP

active.

Switch “B”

with ports set

to LACP

passive (the

default).

Dynamic LACP trunk automatically forms because both

ends of the links are LACP and at least one end is LACP

active. (STP is not needed, and the clear advantages are

increased bandwidth and fault-tolerance.)

Figure 12-10. Example of Criteria for Automatically Forming a Dynamic LACP Trunk

Syntax: interface < port-list > lacp active

Configures < port-list > as LACP active. If the ports at the other

end of the links on < port-list > are configured as LACP passive,

then this command enables a dynamic LACP trunk group on

< port-list >.

This example uses ports C4 and C5 to enable a dynamic LACP trunk group.

HPswitch(config)# interface c4-c5 lacp active

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