# LLDP

## 1. Summary

### 1.1. This page is for changing LLDP settings and viewing neighbor information obtained by LLDP.

* LLDP (Link Layer Discovery Protocol) is a protocol to collect neighbor information. In this unit, following operations aresupported.

- Unit information is periodically transmitted to neighboring devices.

- Reception of information from neighboring devices.

- Display of received neighbor information.

## 2. Top page

This is the top page for the LLDP.

### 2.1. Neighbor information list

- Pressing the "Next" button displays a page where acquired neighbor information can be viewed.

- The "Next" button is disabled if the LLDP function is disabled.

### 2.2. System settings

- Displays the LLDP settings for the system.

- The table items are explained below.

  - LLDP

    - Displays whether LLDP is enabled or disabled for the entire system.

  - Auto-configure via LLDP function

    - The current settings for the auto-configure via LLDP function are displayed.

  - System name

    - Displays the system name to be notified by LLDP.

  - System description

    - Displays the system description to be notified by LLDP.

- Press the "Setting" button to display the page for configuring the system.

### 2.3. Interface settings

- Displays the LLDP settings for the interface.

- The table items are explained below.

  - Port

    - Displays the interface name.

  - LLDP frame transmission and reception

    - Displays the LLDP frame transmission and reception mode for the target interface.

- Press the "Setting" button to display the page for configuring the selected interface.

- Press the "Specify all" button to configure the settings for all interfaces with the check box selected.

- Press the "Return to defaults" button to initialize the settings for all interfaces with the check box selected.

## 3. Neighbor information list page

This page displays a summary of neighbor information obtained by LLDP.
Displays ports where neighbor information was received and part of that information.

### 3.1. Neighbor information list

- Displays a list of neighbor information obtained by LLDP.

- Up to 1000 neighbor information is displayed.

- Pressing the "Detail" button displays a page for viewing details about the selected neighbor information.

- You can search neighbor information from the "Search" box.

  - Press to execute the search.

  - Press to clear the search.

  - You can use regular expressions shown below in search keywords.

  - Lowercase and capital letters are treated the same for keywords.

    Syntax | Explanation
    --- | ---
    A | The character "A"
    ABC | The characters "ABC"
    [ABC] | One character, either "A", "B" or "C"
    [A-C] | One character between "A" and "C"
    [^ABC] | An arbitrary character that is neither "A", "B" or "C"
    . | An arbitrary character
    A+ | At least one "A" character
    A* | At least zero "A" characters
    A? | Zero or one "A" character
    ^A | A string that begins with "A"
    A$ | A string that ends with "A"
    ABC|DEF|GHI | “ABC”, “DEF” or “GHI”
    A{2} | Two "A" characters (AA)
    A{2,} | Two or more "A" characters (AA, AAA, AAAA…​)
    A{2,3} | Two to three "A" characters (AA, AAA)
    \b | Word breaks, such as spaces
    \B | Any character besides \b
    \d | An arbitrary number (same as [0-9])
    \D | Any character besides numbers (same as [^0-9])
    \s | Single breaking character
    \S | Any single character besides \s
    \w | Alphanumeric characters including underlines (same as [A-Za-z0-9_])
    \W | Any character besides \w

  - Press to update information to the latest information.

  - The number of search results to display at one time can be selected by pressing "Display number" on the "Select" menu.

  - If the number of neighbor informationresults exceeds the "display number" setting, the range of neighborinformation results can be changed by pressing .

  - Press the sort switch to sort by each item.

    - With default settings, results are sorted in ascending order of the receiving port.

    - Press the sort switch again to toggle between ascending and descending order.

    - "Receiving ports" are sorted in order of port number.

    - Other items are sorted alphabetically based on the character string.

## 4. Neighbor information detail page

This page displays details for neighbor information selected on the neighbor information page.

### 4.1. Details of neighbor information

- Each information item in the obtained neighbor information is displayed.

- If obtained neighbor information contains no information for an item, "-" is displayed.

- For details on the information displayed, refer to Yamaha Network Devices Technical Documentation.

## 5. System settings page

This page is for configuring the LLDP settings for the system.
Enter the settings, and then press the "Confirm" button.
If there are no mistakes in the input content of the confirmation screen, press the "OK" button.

### 5.1. System settings

- LLDP

  - Specify whether to enable or disable LLDP for the entire system.

- Auto-configure via LLDP function

  - Specify whether to enable or disable Auto-configure via LLDP function.

- System name

  - Specify the system name to be notified by LLDP.

  - Enter up to 255 single-byte alphanumeric characters/symbols, excluding the ? symbol.

- System description

  - Specify the system description to be notified by LLDP.

  - Enter up to 255 single-byte alphanumeric characters/symbols, excluding the ? symbol.

## 6. Interface settings page

This page is for configuring the LLDP settings for the system.
You can also change the detailed settings by pressing the "Advanced settings" button.
Enter the settings, and then press the "Confirm" button.
If there are no mistakes in the input content of the confirmation screen, press the "OK" button.

### 6.1. Interface settings

- Port

  - Specify whether to enable or disable LLDP for the entire system.

- LLDP frame transmission and reception

  - Select the operation for LLDP frame transmission and reception from the following options.

    - Enabled

      - Enables LLDP frame transmission and reception.

      - Select direction to enable from the following items.

        - Transmit & Receive

        - Transmit

        - Receive

    - Disabled

      - Disables LLDP frame transmission and reception.

- Option TLV to send

  - Select the information to be sent by LLDP from the following items.

    - Basic management TLV

      - Sends administrative information about the system, such as the system name and the functions it supports.

    - IEEE 802.1 TLV

      - Sends information about the VLAN and link aggregation of the port.

    - IEEE 802.3 TLV

      - Sends information about the auto negotiation and PoE of the port.

    - LLDP-MED TLV

      - Sends information about network policy and extended PoE of the port.

- LLDP frame transmission interval

  - Specifies the transmission interval of LLDP frames in terms of seconds.

  - Input a transmission interval of LLDP frames from 5 to 3600.

- Hold time (TTL) of device information sent by LLDP

  - Specify a hold multiplier to decide a hold time ( TTL ).

  - Input a hold multiplier from 1 to 100.

  - The upper limit of Hold time (TTL) is 65535.

- Fast transmission period setting

  - Specify a transmission interval and a send number of LLDP frames during the fast transmission period.

  - Input a transmission interval from 1 to 3600.

  - Input a send number from 1 to 8.

- Time from stop sending LLDP frames to reinitialization

  - Specify the waiting time from when LLDP is disabled to when LLDP can be re-enabled on the port.

  - Input a time from stop sending LLDP frames to reinitialization from 1 to 8.

- Type of Management address sent by LLDP

  - Select management address type from the following items.

    - IP address

    - MAC address

- Maximum number of managed devices

  - Specifies the maximum number of managed devices.

  - Input a maximum number of managed devices from 1 to 1000.

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