# Basic Interface Functions

### 1. Function Overview

Here we explain the basic interface functions of this product.

### 2. Definition of Terms Used

None

### 3. Function Details

#### 3.1. Interface types

This product can handle the five interface types shown in the table below.

Interface types | Interface ID | Explanation
--- | --- | ---
LAN port | port | This is a physical port of this product. This interface is expressed as port followed by “port number printed on the chassis”. Specifying LAN port #1: port1.1
VLAN interface | vlan | This is a User-defined VLAN. This interface is expressed as vlan followed by “VLAN ID”. Specifying VLAN1: vlan1
Static logical interface | sa | This is the User-defined link aggregation. Multiple LAN ports can be grouped together and used as one interface. This interface is expressed as “sa” followed by “logical link ID”. Specifying a static logical interface for logical link ID #1: sa1

#### 3.2. Interface control

The interface on this product can be controlled as shown in the table below.

- Interface control items for each port

  Control items | Commands | Explanation
  --- | --- | ---
  Set description | description | Sets the description text for the applicable interface.
  Enable/disable | shutdown | Enables/disables the interface.
  Communication speed/communication mode | speed-duplex | Sets the communication speed and communication mode for the interface. (Select from the following values.) - Auto negotiation - 1Gbps / Full duplex - 100Mbps / Full duplex - 100Mbps / Half duplex - 10Mbps / Full duplex - 10Mbps / Half duplex
  Cross/straight automatic detection (Auto MDI/MDI-X function) | mdix | Automatically detects the port type (MDI or MDI-X) of the connected port and the cable type (cross or straight). This function gives the ability to interconnect without dependency.
  Speed downshift | - | This function automatically reduces the speed and attempts to link when a LAN cable that cannot be used with 1000BASE-T is connected. This function is always enabled for LAN ports. (Cannot be disabled.)
  EEE | eee | Sets whether to use the energy saving technology for Ethernet (EEE: Energy Efficient Ethernet). This is standard for IEEE 802.3az.

- System-wide (common to all ports) interface control items

  Control items | Commands | Explanation
  --- | --- | ---
  MRU | mru | Sets the maximum frame size that can be received by the interface, within a range of 1,522–10,240 bytes.
  BPDU pass through | pass-through bpdu | Sets whether to enable/disable the transmission of BPDU frames (control frames used in the spanning tree).
  EAP pass through | pass-through eap | Sets whether to enable or disable the transmission of EAP frames (authentication frames used in IEEE 802.1X authentication).

Command control of each interface is performed as shown on the table below.

- Interface control functionality chart

  Interface name | Set description | Enable/disable | Communication speed/communication mode | Cross/straight automatic detection | EEE
  --- | --- | --- | --- | --- | ---
  LAN port | Yes | Yes | Yes | Yes | Yes
  VLAN interface | Yes | No | No | No | No
  Static logical interface | Yes | Yes | No | No | No

#### 3.3. LAN port defaults

The product LAN ports are in the following state given default settings.

- All LAN ports function as access ports (ports that handle untagged frames), and belong to the default VLAN (VLAN #1).

- An IPv4 address (192.168.100.240/24) is assigned to the default VLAN (VLAN #1) to which all LAN ports belong.

#### 3.4. Port mirroring

This product provides a port mirroring function, which copies the data traffic from a selected LAN port to another specified port.
The communication status can be analyzed by collecting the copied packets.
This product allows you to specify four mirror ports, making all other LAN ports allocable as “monitor ports.”
However, the following restrictions apply.

- A single monitor port cannot be mirrored to multiple mirror ports.

- A port set as a mirror port cannot be used as a monitor port.

- A LAN port that belongs to a logical interface cannot be used as a mirror port.

The monitoring direction (transmit/receive, transmit only, receive only) can be selected for the monitor ports.
The mirror command can be used to set the port mirroring.
The mirror port setting is disabled by default.

#### 3.5. Frame counter

This product counts the number of frames transmitted/received for each LAN port. (This is called a “frame counter”.)
To reference the frame counter, use the show frame counter command.
The table below shows the display items for the frame counter and their maximum values.

- Received frame counter display items

  Display item | Explanation | Maximum value
  --- | --- | ---
  packets (*1) | Number of received packets | 4,294,967,295
  octets | Number of octets received | 18,446,744,073,709,551,615
  total-good-packets (*2) | Number of packets received successfully | 4,294,967,295
  total-error-packets (*2) | Number of reception error packets (CRC error, alignment error, frame size error) | 4,294,967,295
  drops (*2) | Number of packets discarded during reception due to a filter function or other reasons | 4,294,967,295
  broadcast-and-multicast-packets | Broadcast and multicast packets received | 4,294,967,295
  64octet packets | Number of 64-octet packets received | 4,294,967,295
  65-127octet packets | Number of 65 to 127-octet packets received | 4,294,967,295
  128-255octet packets | Number of 128 to 255-octet packets received | 4,294,967,295
  256-511octet packets | Number of 256 to 511-octet packets received | 4,294,967,295
  512-1023octet packets | Number of 512 to 1,023-octet packets received | 4,294,967,295
  1024-MAXoctet packets | Number of 1,024 to maximum-octet packets received (*3) | 4,294,967,295

  (*1) : The packet value is the total of the (*2) packets.
  (*3) : The value will change, depending on the specified MRU value.

- Transmitted frame counter display items

  Display item | Explanation | Maximum value
  --- | --- | ---
  packets (*1) | Number of packets transmitted | 4,294,967,295
  octets | Number of octets transmitted | 18,446,744,073,709,551,615
  total-good-packets (*2) | Number of packets transmitted successfully | 4,294,967,295
  total-error-packets (*2) | Number of transmission error packets (Frame size error) | 4,294,967,295
  drops (*2) | Number of packets discarded during transmission (Since no discarding occurs on the sending side, the counter value is always 0.) | -
  broadcast-and-multicast-packets | Broadcast and multicast packets transmitted | 4,294,967,295
  64octet packets | Number of 64-octet packets transmitted | 4,294,967,295
  65-127octet packets | Number of 65 to 127-octet packets transmitted | 4,294,967,295
  128-255octet packets | Number of 128 to 255-octet packets transmitted | 4,294,967,295
  256-511octet packets | Number of 256 to 511-octet packets transmitted | 4,294,967,295
  512-1023octet packets | Number of 512 to 1,023-octet packets transmitted | 4,294,967,295
  1024-MAXoctet packets | Number of 1,024 to maximum-octet (*3) packets transmitted | 4,294,967,295

  (*1) : The packet value is the total of the (*2) packets.
  (*3) : The value will change, depending on the specified MRU value.

The frame counter can also be cleared by using the clear counters command.

When you execute the show interface command to display the LAN port status, the frame counter value to be displayed will be
the same frame counter value as the show frame-counter command.

### 4. Related Commands

Related commands are indicated below.
For command details, refer to the command reference.

- Basic interface functions: list of related commands

  Operations | Operating commands
  --- | ---
  Set description | description
  Shutdown | shutdown
  Set communication speed and communication mode | speed-duplex
  Set cross/straight automatic detection | mdix auto
  Set EEE | eee
  Show EEE status information | show eee status
  Set MRU | mru
  Set BPDU pass through | pass-through bpdu
  Set EAP pass through | eap-through bpdu
  Set port mirroring | mirror
  Show mirroring port status | show mirror
  Show interface status | show interface
  Show simplified interface status | show interface brief
  Show frame counter | show frame-counter
  Clear frame counters | clear counters

### 5. Examples of Command Execution

#### 5.1. Basic LAN port settings

Some examples of basic LAN port settings are shown below.
For details on how to make the settings, refer to the Command Reference.

- Set the description text for LAN port #1 (port1.1).

      Yamaha(config)#interface port1.1
      Yamaha(config-if)#description Connected to rtx1210-router

- Disable LAN port #1 (port1.1).

      Yamaha(config)#interface port1.1
      Yamaha(config-if)#shutdown

- Enable LAN port #1 (port1.1).

      Yamaha(config)#interface port1.1
      Yamaha(config-if)#no shutdown

- Set the communication speed and communication mode for LAN port #1 (port1.1) to 100Mbps/Full.

      Yamaha(config)#interface port1.1
      Yamaha(config-if)#speed-duplex 100-full

#### 5.2. Mirroring settings

In this example, we will set LAN port #1 to monitor the frames transmitted by LAN port #4 and the frames transmitted by LAN port #5.
The roles of the ports are shown below.

- Mirror port: LAN port #1 (port1.1)

- Monitor port: LAN port #4 (port1.4), LAN port #5 (port1.5)

  1. Set the monitor port for mirror port LAN port #1 (port1.1).

         Yamaha(config)#interface port1.1
         Yamaha(config-if)#mirror interface port1.4 direction both (1)
         Yamaha(config-if)#mirror interface port1.5 direction transmit (2)

     1 | Monitor transmitted and received frames
     2 | Monitor transmitted frames

  2. Confirm the mirroring settings.

         Yamaha#show mirror
         Monitor Port  Mirror Port  Direction
         ============= ============ ==========
         port1.1       port1.4      both
                       port1.5      transmit

#### 5.3. Show LAN port information

- Confirm the status of LAN port #1 (port1.1).

      Yamaha#show interface port 1.1
      Interface port1.1
        Link is UP
        Hardware is Ethernet
        HW addr: 00a0.deae.b89f
        MRU 1522
        BPDU pass-through: Enabled
        EAP pass-through: Enabled
        Description: Connected to router
        ifIndex 5001
        Speed-Duplex: auto(configured), 1000-full(current)
        Auto MDI/MDIX: on
        Vlan info :
          Switchport mode        : access
          Ingress filter         : enable
          Acceptable frame types : all
          Default Vlan           :    1
          Configured Vlans       :    1
        Interface counter:
          input  packets                        : 34753
                 bytes                          : 7806026
                 drops                          : 12535
                 broadcast-and-multicast-packets: 21176
          output packets                        : 10351
                 bytes                          : 864389
                 drops                          : 0
                 broadcast-and-multicast-packets: 7039

### 6. Points of Caution

None

### 7. Related Documentation

None

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