Advanced Configuration and Modification of the Management Ethernet Interface on Cisco IOS XR Software

This module describes the configuration of Management Ethernet interfaces on the Cisco IOS XR Software.

Before you can use Telnet to access the router through the LAN IP address, you must set up a Management Ethernet interface and enable Telnet servers, as described in the Configuring General Router Features module of the Cisco IOS XRGetting Started Guide. This module describes how to modify the default configuration of the Management Ethernet interface after it has been configured, as described in Cisco IOS XR Getting Started Guide.

Note Forwarding between physical layer interface modules (PLIM) ports and Management Ethernet interface ports is disabled by default. To enable forwarding between PLIM ports and Management Ethernet interface ports, use the rp mgmtethernet forwarding command.

Note Although the Management Ethernet interfaces on the system are present by default, the user must configure these interfaces to use them for accessing the router, using protocols and applications such as Simple Network Management Protocol (SNMP), Common Object Request Broker Architecture (CORBA), HTTP, extensible markup language (XML), TFTP, Telnet, and command-line interface (CLI).

Feature History for Configuring Management Ethernet Interfaces

Release
Modification

Release 3.2

This feature was first supported on the Cisco XR 12000 Series Router.

Release 3.3.0

Manual configuration of the Management Ethernet interface is the only option. The initial prompts that originally walked the user through Management Ethernet interface configuration upon software installation were removed.


Contents

•Prerequisites for Configuring Management Ethernet Interfaces

•Information About Configuring Management Ethernet Interfaces

•How to Perform Advanced Management Ethernet Interface Configuration

•Configuration Examples for Management Ethernet Interfaces

•Additional References

Prerequisites for Configuring Management Ethernet Interfaces

You must be in a user group associated with a task group that includes the proper task IDs. The command reference guides include the task IDs required for each command. If you suspect user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Before performing the Management Ethernet interface configuration procedures that are described in this module, be sure that the following tasks and conditions are met:

•You have performed the initial configuration of the Management Ethernet interface, as described in the Configuring General Router Features module of Cisco IOS XR Getting Started Guide.

•To use the show running-config command, you must be in a user group associated with a task group that includes the proper task IDs for configuration management commands. The Task ID for the show running-config command is listed in Cisco IOS XR System Management Command Reference.

•You know how to apply the generalized interface name specification rack/slot/module/port.

For further information on interface naming conventions, refer to Cisco IOS XR Getting Started Guide.

Note Note that, for transparent switchover, both active and standby Management Ethernet interfaces are expected to be physically connected to the same LAN or switch.

Information About Configuring Management Ethernet Interfaces

To configure Management Ethernet interfaces, you must understand the following concept:

•Default Interface Settings

Default Interface Settings

Table 1 describes the default Management Ethernet interface settings that can be changed by manual configuration. Default settings are not displayed in the show running-config command output.

Table 1 Management Ethernet Interface Default Settings

Parameter
Default Value
Configuration File Entry

Speed in Mbps

Speed is autonegotiated.

speed [10 | 100 | 1000]

To return the system to autonegotiate speed, use the no speed [10 | 100 | 1000] command.

Duplex mode

Duplex mode is autonegotiated.

duplex {full | half}

To return the system to autonegotiated duplex operation, use the no duplex {full | half} command, as appropriate.

MAC address

MAC address is read from the hardware burned-in address (BIA).

mac-address address

To return the device to its default MAC address, use the no mac-address address command.


How to Perform Advanced Management Ethernet Interface Configuration

This section contains the following procedures:

•Configuring a Management Ethernet Interface (required)

•Configuring the Duplex Mode for a Management Ethernet Interface (optional)

•Configuring the Speed for a Management Ethernet Interface (optional)

•Modifying the MAC Address for a Management Ethernet Interface (optional)

•Verifying Management Ethernet Interface Configuration (optional)

Configuring a Management Ethernet Interface

Perform this task to configure a Management Ethernet interface. This procedure provides the minimal configuration required for the Management Ethernet interface.

Note You do not need to perform this task if you have already set up the Management Ethernet interface to enable telnet servers, as described in the Configuring General Router Features module of the Getting Started Guide.

SUMMARY STEPS

1. configure

2. interface MgmtEth interface-path-id

3. ipv4 address ip-address mask

4. mtu bytes

5. no shutdown

6. end
or
commit

7. show interfaces MgmtEth interface-path-id

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

configure

Example:

RP/0/RP0/CPU0:router# configure terminal

Enters global configuration mode.

Step 2 

interface MgmtEth interface-path-id

Example:

RP/0/RP0/CPU0:router(config)# interface MgmtEth 0/RP0/CPU0/0

Enters interface configuration mode and specifies the Ethernet interface name and notation rack/slot/module/port.

The example indicates port 0 on the RP card that is installed in slot 0.

Step 3 

ipv4 address ip-address mask

Example:

RP/0/RP0/CPU0:router(config-if)# ipv4 address 172.18.189.38 255.255.255.224

Assigns an IP address and subnet mask to the interface.

•Replace ip-address with the primary IPv4 address for the interface.

•Replace mask with the mask for the associated IP subnet. The network mask can be specified in either of two ways:

–The network mask can be a four-part dotted decimal address. For example, 255.0.0.0 indicates that each bit equal to 1 means that the corresponding address bit belongs to the network address.

–The network mask can be indicated as a slash (/) and number. For example, /8 indicates that the first 8 bits of the mask are ones, and the corresponding bits of the address are network address.

Step 4 

mtu bytes

Example:

RP/0/RP0/CPU0:router(config-if# mtu 1448

(Optional) Sets the maximum transmission unit (MTU) byte value for the interface. The default is 1514.

•The default is 1514 bytes.

•The range for the Management Ethernet interface Interface mtu values is 64 to 1514 bytes.

Step 5 

no shutdown

Example:

RP/0/RP0/CPU0:router(config-if)# no shutdown

Removes the shutdown configuration, which removes the forced administrative down on the interface, enabling it to move to an up or down state.

Step 6 

end

or

commit

Example:

RP/0/RP0/CPU0:router(config-if)# end

or

RP/0/RP0/CPU0:router(config-if)# commit

Saves configuration changes.

•When you issue the end command, the system prompts you to commit changes: 

Uncommitted changes found, commit them before 
exiting(yes/no/cancel)? 

[cancel]:

 
        
 –Entering yes saves configuration changes to the running configuration file, exits the configuration session, and returns the router to EXEC mode. 
 
 –Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes. 
 
 –Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes. 
 
 •Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session. 
 		 
      
 
      
 
       
 Step 7  
 		 
       
show interfaces MgmtEth interface-path-id 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router# show interfaces MgmtEth 0/RP0/CPU0/0 
 
       
 (Optional) Displays statistics for interfaces on the router. 
 		 
      
 
      
    
 
   
 
   
 
 
     
    
    
   
 Configuring the Duplex Mode for a Management Ethernet Interface 
 
    
   
 Perform this task to configure the duplex mode of the Management Ethernet interfaces for the RPs. 
 
     
    
   
 SUMMARY STEPS 
 
    
   
  1. configure  
 
    
   
  2. interface MgmtEth interface-path-id 
 
    
   
  3. duplex [full | half] 
 
    
   
  4. end
or
commit 
 
     
    
   
 DETAILED STEPS
 
   
 
    
 
      
      
      
 
         
        
        

          Command or Action 
        
 		 
        
        

          Purpose 
        
 		 
      
 
      
 
       
 Step 1  
 		 
       
configure 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router# configure 
 
       
 Enters global configuration mode. 
 		 
      
 
      
 
       
 Step 2  
 		 
       
interface MgmtEth interface-path-id 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config)# interface MgmtEth 0/RP0/CPU0/0 
 
       
 Enters interface configuration mode and specifies the Management Ethernet interface name and instance. 
 		 
      
 
      
 
       
 Step 3  
 		 
       
duplex [full | half] 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config-if)# duplex full 
 
       
 Configures the interface duplex mode. Valid options are full or half. 
 
 Note To return the system to autonegotiated duplex operation, use the no duplex command. 
 		 
      
 
      
 
       
 Step 4  
 		 
       
end 
 or 
 
commit 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config-if)# end 
 or 
 
RP/0/RP0/CPU0:router(config-if)# commit 
 
       
 Saves configuration changes. 
 
 •When you issue the end command, the system prompts you to commit changes: 
  
        
 
         
Uncommitted changes found, commit them before 
exiting(yes/no/cancel)? 

 
        
 
        
 
         
[cancel]:

 
        
 
        
 
         
 
        
 –Entering yes saves configuration changes to the running configuration file, exits the configuration session, and returns the router to EXEC mode. 
 
 –Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes. 
 
 –Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes. 
 
 •Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session. 
 		 
      
 
      
    
 
   
 
   
  
 
     
    
    
   
 Configuring the Speed for a Management Ethernet Interface 
 
    
   
 Perform this task to configure the speed of the Management Ethernet interfaces for the RPs. 
 
     
    
   
 SUMMARY STEPS 
 
    
   
  1. configure  
 
    
   
  2. interface MgmtEth interface-path-id 
 
    
   
  3. speed {10 | 100 | 1000} 
 
    
   
  4. end
or
commit 
 
     
    
   
 DETAILED STEPS 
 
    
   
 
 
   
 
    
 
      
      
      
 
         
        
        

          Command or Action 
        
 		 
        
        

          Purpose 
        
 		 
      
 
      
 
       
 Step 1  
 		 
       
configure 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router# configure 
 
       
 Enters global configuration mode. 
 		 
      
 
      
 
       
 Step 2  
 		 
       
interface MgmtEth interface-path-id 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config)# interface MgmtEth 0/RP0/CPU0/0 
 
       
 Enters interface configuration mode and specifies the Management Ethernet interface name and instance. 
 		 
      
 
      
 
       
 Step 3  
 		 
       
speed {10 | 100 | 1000} 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config-if)# speed 100 
 
       
 Configures the interface speed parameter. 
 
 Valid speed options are 10, 100 or 1000 Mbps. 
 
 Note The default Management Ethernet interface speed is autonegotiated. 
 
 Note To return the system to the default autonegotiated speed, use the no speed command. 
 		 
      
 
      
 
       
 Step 4  
 		 
       
end 
 or 
 
commit 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config-if)# end 
 or 
 
RP/0/RP0/CPU0:router(config-if)# commit 
 
       
 Saves configuration changes. 
 
 •When you issue the end command, the system prompts you to commit changes: 
  
        
 
         
Uncommitted changes found, commit them before 
exiting(yes/no/cancel)? 

 
        
 
        
 
         
[cancel]:

 
        
 
        
 
         
 
        
 –Entering yes saves configuration changes to the running configuration file, exits the configuration session, and returns the router to EXEC mode. 
 
 –Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes. 
 
 –Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes. 
 
 •Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session. 
 		 
      
 
      
    
 
   
 
   
 
 
     
    
    
   
 Modifying the MAC Address for a Management Ethernet Interface 
 
    
   
 Perform this task to configure the MAC layer address of the Management Ethernet interfaces for the RPs. 
 
     
    
   
 SUMMARY STEPS 
 
    
   
  1. configure  
 
    
   
  2. interface MgmtEth interface-path-id 
 
    
   
  3. mac-address address 
 
    
   
  4. end
or
commit 
 
     
    
   
 DETAILED STEPS 
 
    
   
 
 
   
 
    
 
      
      
      
 
         
        
        

          Command or Action 
        
 		 
        
        

          Purpose 
        
 		 
      
 
      
 
       
 Step 1  
 		 
       
configure 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router# configure 
 
       
 Enters global configuration mode. 
 		 
      
 
      
 
       
 Step 2  
 		 
       
interface MgmtEth interface-path-id 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config)# interface MgmtEth 0/RP0/CPU0/0 
 
       
 Enters interface configuration mode and specifies the Management Ethernet interface name and instance. 
 		 
      
 
      
 
       
 Step 3  
 		 
       
mac-address address 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config-if)# mac-address 0001.2468.ABCD 
 
       
 Configures the MAC layer address of the Management Ethernet interface. 
 
 Note To return the device to its default MAC address, use the no mac-address address command. 
 		 
      
 
      
 
       
 Step 4  
 		 
       
end 
 or 
 
commit 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router(config-if)# end 
 or 
 
RP/0/RP0/CPU0:router(config-if)# commit 
 
       
 Saves configuration changes. 
 
 •When you issue the end command, the system prompts you to commit changes: 
  
        
 
         
Uncommitted changes found, commit them before 
exiting(yes/no/cancel)? 

 
        
 
        
 
         
[cancel]:

 
        
 
        
 
         
 
        
 –Entering yes saves configuration changes to the running configuration file, exits the configuration session, and returns the router to EXEC mode. 
 
 –Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes. 
 
 –Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes. 
 
 •Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session. 
 		 
      
 
      
    
 
   
 
   
 
 
     
    
    
   
 Verifying Management Ethernet Interface Configuration 
 
    
   
 Perform this task to verify configuration modifications on the Management Ethernet interfaces for the RPs. 
 
     
    
   
 SUMMARY STEPS 
 
    
   
  1. show interfaces MgmtEth interface-path-id 
 
    
   
  2. show running-config 
 
    
   
 
 
   
 
    
 
      
      
      
 
       
 Step 1  
 		 
       
show interfaces MgmtEth interface-path-id 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router# show interfaces MgmtEth 0/RP0/CPU0/0 
 
       
 Displays the Management Ethernet interface configuration. 
 		 
      
 
      
 
       
 Step 2  
 		 
       
show running-config interface MgmtEth interface-path-id 
 
        

          Example: 
        
 
RP/0/RP0/CPU0:router# show running-config interface MgmtEth 0/RP0/CPU0/0 
 
       
 Displays the running configuration. 
 		 
      
 
      
    
 
   
 
   
 
 
     
    
    
   
 Configuration Examples for Management Ethernet Interfaces 
 
    
   
 This section provides the following configuration examples: 
 
    
   
 •Configuring a Management Ethernet Interface: Example 
 
     
    
    
   
 Configuring a Management Ethernet Interface: Example 
 
    
   
 This example displays advanced configuration and verification of the Management Ethernet interface on the RP: 
 
    
   
 
    
RP/0/RP0/CPU0:router# configure

 
   
 
    
   
 
    
RP/0/RP0/CPU0:router(config)# interface MgmtEth 0/RP0/CPU0/0 

 
   
 
    
   
 
    
RP/0/RP0/CPU0:router(config)# ipv4 address 172.29.52.70 255.255.255.0

 
   
 
    
   
 
    
RP/0/RP0/CPU0:router(config-if)# speed 100

 
   
 
    
   
 
    
RP/0/RP0/CPU0:router(config-if)# duplex full

 
   
 
    
   
 
    
RP/0/RP0/CPU0:router(config-if)# no shutdown

 
   
 
    
   
 
    
RP/0/RP0/CPU0:router(config-if)# commit 

 
   
 
    
   
 
    
RP/0/RP0/CPU0:Mar 26 01:09:28.685 :ifmgr[190]:%LINK-3-UPDOWN :Interface 
MgmtEth0/RP0/CPU0/0, changed state to Up 

 
   
 
    
   
 
    
RP/0/RP0/CPU0:router(config-if)# end

 
   
 
    
   
 
    
 
   
 
    
   
 
    
RP/0/RP0/CPU0:router# show interfaces MgmtEth 0/RP0/CPU0/0 

 
   
 
    
   
 
    
 
   
 
    
   
 
    
MMgmtEth0/RP0/CPU0/0 is up, line protocol is up

 
   
 
    
   
 
    
  Hardware is Management Ethernet, address is 0011.93ef.e8ea (bia 0011.93ef.e8ea

 
   
 
    
   
 
    
)

 
   
 
    
   
 
    
  Description: Connected to Lab LAN

 
   
 
    
   
 
    
  Internet address is 172.29.52.70/24

 
   
 
    
   
 
    
  MTU 1514 bytes, BW 100000 Kbit

 
   
 
    
   
 
    
     reliability 255/255, txload 1/255, rxload 1/255

 
   
 
    
   
 
    
  Encapsulation ARPA,  loopback not set,

 
   
 
    
   
 
    
  ARP type ARPA, ARP timeout 04:00:00

 
   
 
    
   
 
    
  Last clearing of "show interface" counters never

 
   
 
    
   
 
    
  5 minute input rate 3000 bits/sec, 7 packets/sec

 
   
 
    
   
 
    
  5 minute output rate 0 bits/sec, 1 packets/sec

 
   
 
    
   
 
    
     30445 packets input, 1839328 bytes, 64 total input drops

 
   
 
    
   
 
    
     0 drops for unrecognized upper-level protocol

 
   
 
    
   
 
    
     Received 23564 broadcast packets, 0 multicast packets

 
   
 
    
   
 
    
              0 runts, 0 giants, 0 throttles, 0 parity

 
   
 
    
   
 
    
     57 input errors, 40 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

 
   
 
    
   
 
    
     171672 packets output, 8029024 bytes, 0 total output drops

 
   
 
    
   
 
    
     Output 16 broadcast packets, 0 multicast packets

 
   
 
    
   
 
    
     0 output errors, 0 underruns, 0 applique, 0 resets

 
   
 
    
   
 
    
     0 output buffer failures, 0 output buffers swapped out

 
   
 
    
   
 
    
     1 carrier transitions

 
   
 
    
   
 
    
 
   
 
    
   
 
    
RP/0/RP0/CPU0:router# show running-config interface MgmtEth 0/RP0/CPU0/0

 
   
 
    
   
 
    
 
   
 
    
   
 
    
interface MgmtEth0/RP0/CPU0/0

 
   
 
    
   
 
    
 description Connected to Lab LAN

 
   
 
    
   
 
    
 ipv4 address 172.29.52.70 255.255.255.0

 
   
 
    
   
 
    
!

 
   
 
     
    
    
    
   
 Additional References 
 
    
   
 These sections provide references related to Management Ethernet interface configuration. 
 
     
    
    
   
 Related Documents
 
   
 
    
 
      
      
      
 
        
        

          Related Topic 
        
 		 
        
        

          Document Title 
        
 		 
      
 
      
 
       
 Cisco IOS XR master command reference 
 		 
       
 Cisco IOS XR Master Commands List 
 		 
      
 
      
 
       
 Cisco IOS XR interface configuration commands 
 		 
       
 Cisco IOS XR Interface and Hardware Component Command Reference 
 		 
      
 
      
 
       
 Initial system bootup and configuration information for a router using the Cisco IOS XR software. 
 		 
       
 Cisco IOS XR Getting Started Guide 
 		 
      
 
      
 
       
 Information about user groups and task IDs 
 		 
       
 Cisco IOS XR Interface and Hardware Component Command Reference 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
     
    
    
   
 Standards
 
   
 
    
 
      
      
      
 
        
        

          Standards 
        
 		 
        
        

          Title 
        
 		 
      
 
      
 
       
 No new or modified standards are supported by this feature, and support for existing standards has not been modified by the feature. 
 		 
       
 — 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
     
    
   
 MIBs
 
   
 
    
 
      
      
      
 
        
        

          MIBs 
        
 		 
        
        

          MIBs Link 
        
 		 
      
 
      
 
       
 There are no applicable MIBs for this module. 
 		 
       
 To locate and download MIBs for selected platforms using 
Cisco IOS XR Software, use the Cisco MIB Locator found at the following URL: 
 
 http://www.cisco.com/go/mibs 
 		 
      
 
      
    
 
   
 
   
 
   
  
 
     
    
    
   
 RFCs
 
   
 
    
 
      
      
      
 
        
        

          RFCs 
        
 		 
        
        

          Title 
        
 		 
      
 
      
 
       
 No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature. 
 		 
       
 — 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
     
    
   
 Technical Assistance
 
   
 
    
 
      
      
      
 
        
        

          Description 
        
 		 
        
        

          Link 
        
 		 
      
 
      
 
       
 The Cisco Technical Support website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content. 
 		 
       
 http://www.cisco.com/support