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Managing System Settings

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.

2.

Select a radio button to enable or disable LLDP:

•

Disable

. LLDP is disabled (default).

•

Enable

. LLDP is enabled.

3.

When LLDP is disabled, select how LLDP packets are processed from the

LLDPDU

Handling

drop-down list:

•

Flooding

.

LLDPDU packet flooding is enabled. LLDP packets that are received from

another LLDP device are flooded, that is, the packets are forwarded to all devices that are

attached to the switch.

•

Filtering

.

LLDPDU packet filtering is enabled. LLDP packets that are received from

another LLDP device are dropped.

4.

When LLDP is enabled, the following configurable LLDP settings are displayed:

•

TLV Advertised Interval (

5–32768 sec). The interval at which LLDP frames are

transmitted on behalf of this LLDP agent. The default is value is 30 seconds.

•

Hold Multiplier

(2–10). A multiplier to the advertised interval. The result is the time-to-

live (TTL) value for the information that is advertised. The default value is 4.

•

Reinitializing Delay

(1–10 sec). The minimum delay period from the time a port becomes

disabled until its reinitialization. The default value is 2 seconds.

•

Transmit Delay

(1–8192 sec). The delay between successive LLDP frame transmissions

that are initiated by a value or status changes in the local system. The default value is 2

seconds.

Figure 3-5

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v1.0, December 2007

•

Notification Interval

(5–3600 sec). The interval at which notifications are generated

when remote MSAP information changes. The default value is 5 seconds.

•

Fast Start Count

(2–10). The number of successive LLDP frame transmissions for one

complete fast-start interval. The default value is 4.

5.

Click

Apply

to confirm any settings changes.

Advanced—LLDP Configuration

The Advanced LLDP Configuration screen is identical to the Basic LLDP Configuration screen.

See the previous section.

Advanced—LLDP Port Settings

When LDDP is enabled, you can view the LLDP port settings in the LDDP Port Settings screen:

1.

Select System > LLDP > Advanced > LLDP Port Settings. A screen similar to the following

displays.

.

2.

You can make changes to the LLDP settings for an individual port, for a group of ports, or for

all ports simultaneously:

•

To change the LLDP settings for an individual port, select the check box to the left of its

port number, and then select the LLDP port settings.

Figure 3-6

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v1.0, December 2007

•

To change the LLDP settings for a group of ports, select the check boxes to the left of their

port numbers, and then select the LLDP port settings.

•

To change the LLDP settings for all ports simultaneously, select the check box at the top of

the column of check boxes, and then select the LLDP port settings.

The following information about the LLDP configuration for a port is displayed:

•

Ports

. Shows the port number.

•

Admin Status

. The administratively assigned status of the local LLDP agent. The possible

field values are:

–

TX Only

. Specifies that transmission of local LLDP information only is enabled.

–

RX Only

. Specifies that reception of remote LLDP information only is enabled.

–

TX and RX

. Specifies that both transmission and reception of LLDP information are

enabled.

–

Disable

. Specifies that both transmission and reception of LLDP information are

disabled.

•

Notification

. Specifies whether or not transmission notifications are enabled.

•

MED Notification

. Specifies whether or not Media Endpoint Discovery (MED)

transmission notifications are enabled.

•

Optional TLVs

. Specifies whether or not the transmission of threshold limit values

(TLVs) is enabled.

3.

Click

Apply

to confirm any settings changes.

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Advanced—Local Information

When LDDP is enabled, you can view the LLDP local information in the Local Information

screen, which is also referred to as the LLDP Local Device Information screen:

Select System > LLDP > Advanced > LLDP Port Settings. A screen similar to the following

displays.

Figure 3-7

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Under Device Information, the following LLDP local information is displayed:

•

Chassis ID SubType

. Shows the basis for the chassis ID entity.

•

Chassis ID

. Shows the identifier for the particular chassis in the system.

•

System Name

. Shows the administratively assigned system name.

•

System Description

. Shows a textual description of the network entity, including the full

name and version identification of the system’s hardware type.

•

System Capabilities

. Shows the primary functions of the system.

•

Enabled Capabilities

. Shows which of the primary functions are enabled.

•

MED Device Type

. Shows whether the device is a MED device.

•

Management Address

. Shows the address that is associated with the LLDP agent that can be

used to reach higher-layer entities to assist discovery by network management.

Under Port Information, the following LLDP port information is displayed:

•

Port

. Shows the local port number.

•

Port ID SubType

. Shows the basis for the identifier that is listed in the Port ID field.

•

Port ID

. Shows the identifier for the port from which the LLDPDU was transmitted.

•

Port Description

. Shows the port’s description.

Note:

When LLDP is disabled, all local information fields display N/A.

Table 3-1. Management Address

Item

Description

Address

Sub-type

Shows the type of address that is listed in the management address field.

Address

Shows the management IP address.

Interface

Sub-type

Shows the numbering method used for defining the interface number.

Interface

Number

Shows the specific address associated with the management address.

OID

Shows the type of hardware component or protocol entity that is associated with

the management address.