Software User's Guide Version 3.3

Configuring and Monitoring the Ethernet Network Interface

This chapter describes Ethernet interface configuration and operational commands. It includes the following sections:

"Accessing the Ethernet Interface Operating Process"
"Ethernet Interface Monitoring Commands"

Accessing the Ethernet Interface Configuration Process

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

At the OPCON prompt, enter talk 6. (For more detail on this command, refer to "What is the OPCON Process?".) For example:
```
* talk 6
Config>
```
The CONFIG prompt (Config>) displays on the console. If the prompt does not appear when you first enter configuration, press Return again.

At the CONFIG prompt, enter the list devices command to display the network interface numbers for which the router is currently configured. For example:

Config> list devices

Ifc 0 Ethernet                        CSR  81600, CSR2  80C00, vector 94
Ifc 1 WAN X.25                        CSR  81620, CSR2  80D00, vector 93
Ifc 2 WAN X.25                        CSR  81640, CSR2  80E00, vector 92
Ifc 3 WAN PPP                         CSR 381620, CSR2 380D00, vector 125
Ifc 4 WAN Frame Relay                 CSR 381640, CSR2 380E00, vector 124
Ifc 5 Token Ring                      CSR 600000, vector 95

Record the interface numbers.
Enter the network command and the number of the Ethernet interface you want to configure. For example:
```
Config> network 0
ETH Config>
```
The Ethernet configuration prompt (ETH Config>), is displayed.

Ethernet Configuration Commands

This section summarizes and then explains the Ethernet configuration commands. Enter the commands at the ETH config> prompt.

Table 33. 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".
Connector-Type Sets the connector type.
IP-Encapsulation Sets the IP encapsulation as Ethernet (type X'0800') or IEEE (802.3 with SNAP).
List Displays the current connector-type, NetWare IPX encapsulation, and IP encapsulation.
Physical-Address Sets the physical MAC address.
Exit Returns you to the previous command level. See "Exiting a Lower Level Environment".

Command	Function
? (Help)	Displays all the commands available for this command level or lists the options for specific commands (if available). See "Getting Help".
Connector-Type	Sets the connector type.
IP-Encapsulation	Sets the IP encapsulation as Ethernet (type X'0800') or IEEE (802.3 with SNAP).
List	Displays the current connector-type, NetWare IPX encapsulation, and IP encapsulation.
Physical-Address	Sets the physical MAC address.
Exit	Returns you to the previous command level. See "Exiting a Lower Level Environment".

Connector-Type

Use the connector-type command to set the connector type. 2210s support AUI (10BASE5) and RJ-45 (10BASE-T) connectors, and auto-config options.

Syntax:

connector-type: name

IP-Encapsulation

Use the IP-encapsulation command to select Ethernet (Ethernet type X'0800') or IEEE 802.3 (Ethernet 802.3 with SNAP). Enter e or i.

Syntax:

ip-encapsulation: type

List

Use the list command to display the current configuration for the Ethernet interface including the connector-type, IPX encapsulation type, and IP encapsulation type.

Syntax:

list: all

Example:

list all

Connector type:            AUI (10BASE5)
MAC Address:               12:15:00:FA:00:FE

Physical-Address

Use the physical-address command to set the physical (MAC) 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 router 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:

set physical-address

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

Accessing the Ethernet Interface Operating Process

To monitor information related to the Ethernet Network Interface, access the interface monitoring process by doing the following:

At the OPCON prompt, enter talk 5. For example:
```
* talk 5
```
The GWCON prompt (+) is displayed on the console. If the prompt does not appear when you first enter GWCON, press Return again.
At the GWCON prompt, enter the configuration command to see the protocols and networks for which the router is configured. For example:
```
+ configuration
```
See page "Configuration" for sample output of the configuration command.
Enter the network command and the number of the Ethernet interface. In this example:
```
+ network 0
ETH>
```
The Ethernet monitoring prompt is displayed. You can now view information about the Ethernet interface by entering monitoring commands.

Ethernet Interface Monitoring Commands

This section summarizes and explains the Ethernet monitoring commands. Enter commands at the ETH> prompt. Table 34 lists the monitoring commands.

Table 34. 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".

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 shows the counts of transmissions for packets that incurred collisions before successful transmission. Counters are given for packets sent after the collision XXXXx packets sent after 15 collisions. Increasing numbers of packets transmitting with collisions and higher numbers of collision 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

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