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Software User's Guide Version 3.4

Configuring and Monitoring the 10/100-Mbps Ethernet Network Interface

This chapter describes the 10/100-Mbps Ethernet interface configuration and operational commands. It includes the following sections:

Accessing the Interface Configuration Process

Use the following procedure to access the configuration process. This process gives you access to an Ethernet interface's configuration process.

  1. At the OPCON prompt, enter configuration. (For more detail on this command, refer to "What is the OPCON Process?".) For example: 
    * configuration
Config>

    The CONFIG prompt (Config>) displays on the console. If the prompt does not appear when you first enter configuration, press enter again.

  2. At the CONFIG prompt, enter the list devices command to display the network interface numbers for which the device is currently configured.
  3. Record the interface numbers.
  4. Enter the network command and the number of the Ethernet interface you want to configure. For example: 
    Config> network 0
Ethernet interface configuration
ETH Config>

    The Ethernet configuration prompt (ETH Config>), is displayed.

10/100-Mbps Ethernet Configuration Commands

This section describes the 10/100-Mbps Ethernet configuration commands. Enter the commands at the ETH config> prompt.

Table 37. Ethernet Configuration Command Summary
Command Function
? (Help) Displays all the commands available for this command level or lists the options for specific commands (if available). See "Getting Help".
Duplex Sets the duplex mode. (For 10/100-Mbps Ethernet only.)
IP-Encapsulation Sets the IP encapsulation as Ethernet (type X'0800'), IEEE (802.3 with SNAP), or both.
List Displays the current connector-type, and IP encapsulation.
Physical-Address Sets the physical MAC address.
Speed Sets the link speed.
Exit Returns you to the previous command level. See "Exiting a Lower Level Environment".

Duplex

Use the duplex command to set the duplex mode. This command is for 10/100-Mbps Ethernet only.
Note:The default value of auto is recommended. The value half-duplex or full-duplex should be specified only if auto-negotiation does not result in successful activation of the interface or desired duplex mode. Note when you see the command syntax that the command for half-duplex or full-duplex is written with an underline between the words, for example, half_duplex.

If a value other than auto is specified, ensure that the same value is configured on the switch port. After configuring the switch port to match the duplex specified on the 10/100-Mbps Ethernet interface, disable and test the interface.

Verify that the actual duplex mode shown on the interface status panel matches the operational value on the switch port.

The interface may enter the Up state with mismatched duplex mode. Operating with mismatched duplex modes on the interface and switch port can cause severe performance degradation.

See "Configuring Values Other than Auto for Duplex" for information about duplex mode.

Syntax:

duplex
half_duplex

full_duplex

auto

Half_duplex
The interface will not transmit while receiving or receive while transmitting.

Full_duplex
The interface will transmit and receive simultaneously.

Auto
The interface will automatically select half duplex or full duplex depending on the link partner's capability.

IP-Encapsulation

Use the IP-encapsulation command to select Ethernet (Ethernet type X'0800'), IEEE 802.3 (Ethernet 802.3 with SNAP), or both. The default is Ethernet.

The option both enables the 2216 to use Ethernet encapsulation to transmit to hosts that have Ethernet encapsulation and to use IEEE 802.3 encapsulation to transmit to hosts that have IEEE 802.3 encapsulation. If your Ethernet LAN includes some hosts that use one type of encapsulation and some that use the other, entering both enables all of them to communicate.

The option both applies only to unicast frames. If you enter both, you are prompted to enter either ethernet or ieee-802.3 for broadcast and multicast frames.

Syntax:

IP-encapsulation

Example: 

Eth Config [1]>ip-encapsulation both
How would you like IP broadcast/multicast frames to be sent (ETHER/IEEE-802.3) [ETHER]?

List

Use the list command to display the current configuration for the 10/100-Mbps Ethernet interface.

Syntax:

list
all

Example:
list all 
Eth Config [2]>list all
Connector type:            RJ45 (10BASET)
IP Encapsulation:          ETHER
 
MAC Address:               023456789A56

Physical-Address

Use the physical-address command to set the physical (MAC) address.

Syntax:

physical-address
address

physical-address
This command lets you indicate whether you want to define a locally administered address for the Ethernet interface's MAC sublayer address, or use the default burned-in address (indicated by all zeros). The MAC sublayer address is the address that the Ethernet interface uses to receive and transmit frames.
Note:Pressing Enter leaves the value the same. Entering 0 causes the device to use the burned-in address. The default is to use the burned-in address.

Valid Values: Any 12-digit hexadecimal address.

Default Value: burned-in address (indicated by all zeros).

Example: 

physical-address
MAC address in 00:00:00:00:00:00 form []? 12:15:00:FA:00:FE

Speed

Use the speed command to set the speed used by this interface.
Note:For 10/100-Mbps Ethernet, the default value of auto is recommended. The values of ten and hundred should be specified only if auto-negotiation does not result in successful activation of the interface or desired speed.

If a value other than auto is specified, ensure that the same value is configured on the switch port. After configuring the switch port to match the speed specified on the 10/100-Mbps Ethernet interface, disable and test the interface.

If the interface and switch (or hub) port are not configured for identical speed, the interface will not attain the Up state.

See "Auto-negotiation on the 10/100-Mbps Ethernet Interface" for information about auto-negotiation.

Syntax:

speed
ten

hundred

auto

Ten
The 10/100 Mbps interface will operate at 10 Mbps.

Hundred
The 10/100 Mbps interface will operate at 100 Mbps

Auto
The 10/100 Mbps interface will automatically select the speed (10 Mbps or 100 Mbps) depending on the link partner's capability.

Accessing the Ethernet Interface Monitoring Process

To monitor information related to the 10/100-Mbps Ethernet Network Interface, access the interface monitoring process by doing the following:

  1. At the OPCON prompt, enter console. For example: 
    * console

    The GWCON prompt (+) is displayed on the console. If the prompt does not appear when you first enter GWCON, press enter again.

  2. At the GWCON prompt, enter the configuration command to see the protocols and networks for which the device is configured. For example: 
    + configuration

    See "Configuration" for sample output of the configuration command.

  3. Enter the network command and the number of the Ethernet interface as shown in the following example: 
    + network 0
ETH>

    The Ethernet monitoring prompt is displayed. You can now view information about the Ethernet interface by entering monitoring commands.

10/100-Mbps Ethernet Interface Monitoring Commands

This section summarizes the 10/100-Mbps Ethernet monitoring commands. Enter commands at the ETH> prompt.

Table 38. Ethernet Monitoring Command Summary
Command Function
? (Help) Displays all the commands available for this command level or lists the options for specific commands (if available). See "Getting Help".
 Collisions   Displays collision statistics for the specified Ethernet interface. 
Exit Returns you to the previous command level. See "Exiting a Lower Level Environment".

Collisions

This command displays the counts of transmissions for packets that incurred collisions before successful transmission. Counters are displayed for packets sent after 15 collisions. An increased number of packets transmitted with collisions and higher numbers of collisions per packet are signs of transmitting onto a busy Ethernet.

These counters are cleared by the OPCON CLEAR command. This data is exported via SNMP as the dot3CollTable counter.

Syntax:

collisions
 

Example:
Eth> coll 
Transmitted with  1 collisions:0
Transmitted with  2 collisions:0
Transmitted with  3 collisions:0
Transmitted with  4 collisions:0
Transmitted with  5 collisions:0
Transmitted with  6 collisions:0
Transmitted with  7 collisions:0
Transmitted with  8 collisions:0
Transmitted with  9 collisions:0
Transmitted with 10 collisions:0
Transmitted with 11 collisions:0
Transmitted with 12 collisions:0
Transmitted with 13 collisions:0
Transmitted with 14 collisions:0
Transmitted with 15 collisions:0

Ethernet Dynamic Reconfiguration Support

This section describes dynamic reconfiguration (DR) as it affects Talk 6 and Talk 5 commands.

CONFIG (Talk 6) Delete Interface

Ethernet supports the CONFIG (Talk 6) delete interface command with no restrictions.

GWCON (Talk 5) Activate Interface

Ethernet supports the GWCON (Talk 5) activate interface command with no restrictions.

All Ethernet interface-specific commands are supported by the GWCON (Talk 5) activate interface command.

GWCON (Talk 5) Reset Interface

Ethernet supports the GWCON (Talk 5) reset interface command with no restrictions.

All Ethernet interface-specific commands are supported by the GWCON (Talk 5) reset interface command.

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