RTS DV-3400 Informações Técnicas descarregar pdf (Página 418)

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101

Configuring for Network Management Applications

LLDP (Link-Layer Discovery Protocol)

Syntax show lldp info remote-device [ port-list ]

Without the [ port-list ] option, this command provides a global

list of the individual devices it has detected by reading LLDP

advertisements. Discovered devices are listed by the inbound

port on which they were discovered. Multiple devices

listed for

a single port indicates one of the following:

• 5300xl and 4200vl Switches: Multiple devices listed for the

same port indicates that such devices are connected to the

switch through a hub.

• 3400cl/6400cl Switches: Multiple devices listed for the

same port indicate that multiple devices are connected to the

switch through a hub.

Discovering the same device on multiple ports

indicates that

the remote device may be connected to the switch in one of the

following ways:

– Through different VLANS using separate links. (This

applies to switches that use the same MAC address for all

configured VLANs.)

– Through different links in the same trunk.

– Through different links using the same VLAN. (In this

case, spanning-tree should be invoked to prevent a net-

work topology loop. Note that LLDP packets travel on links

that spanning-tree blocks for other traffic types.)

With the [ port-list ] option, this command provides a listing of

the LLDP data that the switch has detected in advertisements

received on the specified ports.

For descriptions of the various types of information displayed

by these commands, refer to Table 15-3 on page 15-29.

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