Basic Interface Functions
Basic Interface Functions
1. Function Overview
Here we explain the basic interface functions of this product.
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. |
VLAN interface |
vlan |
This is a User-defined VLAN. |
Static logical interface |
sa |
This is the User-defined link aggregation. |
3.2. Interface control
The interface on this product can be controlled as shown in the table below.
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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 duplexCross/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.
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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.
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All LAN ports function as access ports (ports that handle untagged frames), and belong to the default VLAN (VLAN #1).
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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.
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A single monitor port cannot be mirrored to multiple mirror ports.
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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.
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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.
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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.
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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.
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Mirror port: LAN port #1 (port1.1)
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Monitor port: LAN port #4 (port1.4), LAN port #5 (port1.5)
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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 -
Confirm the mirroring settings.
Yamaha#show mirror Monitor Port Mirror Port Direction ============= ============ ========== port1.1 port1.4 both port1.5 transmit
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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