Static MAC Address Support for Service Instances and Pseudowires
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Table Of Contents

Static MAC Address Support on Service Instances and Pseudowires

Finding Feature Information

Contents

Prerequisites for Static MAC Address Support on Service Instances and Pseudowires

Restrictions for Static MAC Address Support on Service Instances and Pseudowires

Information About Static MAC Address Support on Service Instances and Pseudowires

Static MAC Address Support on Service Instances and Pseudowires

Benefits of Static MAC Address Support on Service Instances and Pseudowires

How to Configure a Static MAC Address on Service Instances or Pseudowires

Configuring a Static MAC Address on a Service Instance

Configuring a Static MAC Address on a Pseudowire

Displaying Configured Static MAC Addresses

Configuration Examples for Static MAC Address Support on Service Instances and Pseudowires

Example: Configuring a Static MAC Address on a Service Instance

Example: Configuring a Static MAC Address on a Pseudowire

Additional References

Related Documents

Standards

MIBs

RFCs

Technical Assistance

Feature Information for Static MAC Address Support on Service Instances and Pseudowires


Static MAC Address Support on Service Instances and Pseudowires

First Published: November 20, 2009
Last Updated: February 5, 2011

The Static MAC Address Support on Service Instances and Pseudowires feature supports configuration of a static MAC address on a pseudoport. Use of a static MAC address for broadband network gateway (BNG) upstream traffic enables traffic forwarding while conserving MAC table resources and limiting the traffic flood by creating multicast groups.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the "Feature Information for Static MAC Address Support on Service Instances and Pseudowires" section.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Contents

•Prerequisites for Static MAC Address Support on Service Instances and Pseudowires

•Restrictions for Static MAC Address Support on Service Instances and Pseudowires

•Information About Static MAC Address Support on Service Instances and Pseudowires

•How to Configure a Static MAC Address on Service Instances or Pseudowires

•Additional References

•Feature Information for Static MAC Address Support on Service Instances and Pseudowires

Prerequisites for Static MAC Address Support on Service Instances and Pseudowires

•Knowledge of both port and bridge domain limitations.

•Knowledge of service instances.

•Layer 2 virtual forwarding instance (L2VFI) must be integrated with the bridge domain.

Restrictions for Static MAC Address Support on Service Instances and Pseudowires

•Multicast static MAC addresses are not allowed in MAC address security configurations.

•Static MAC addresses are programmed only on switch processors (both active and standby).

Information About Static MAC Address Support on Service Instances and Pseudowires

•Static MAC Address Support on Service Instances and Pseudowires

•Benefits of Static MAC Address Support on Service Instances and Pseudowires

Static MAC Address Support on Service Instances and Pseudowires

Static MAC address configuration on service instances and pseudowires eliminates the need for MAC address learning, which is required for traffic forwarding. In the upstream direction, without MAC address learning, MAC address table resources can be conserved and network resources optimized.

Static MAC address configuration requires L2VFI integration with a bridge domain, which allows a pseudoport to be created on the bridge domain for a pseudowire. After the pseudoport is created, the static MAC configuration can be associated to the bridge domain pseudoport.

Multicast static MAC addresses are allowed on multiple pseudoports in the same bridge domain.

Figure 1 shows static MAC addresses in a network configured with broadband remote access server (BRAS) redundancy.

Figure 1

Active/Active Aggregation Node and BRAS Redundancy

When a bridge domain ID is either changed or deleted for a service instance or for an L2VFI, all static MAC addresses are removed.

When a service instance or a pseudowire is deleted, all static MAC addresses on that pseudoport are removed.

Benefits of Static MAC Address Support on Service Instances and Pseudowires

•Facilitates optimization of network resources

•Conserves MAC table resources when used for upstream traffic

How to Configure a Static MAC Address on Service Instances or Pseudowires

•Configuring a Static MAC Address on a Service Instance

•Configuring a Static MAC Address on a Pseudowire

•Displaying Configured Static MAC Addresses

Configuring a Static MAC Address on a Service Instance

Perform this task to manually configure a static MAC address on a service instance.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface type number

4. service instance id ethernet [evc-id]

5. encapsulation dot1q vlan-id [,vlan-id [-vlan-id]] [native]

6. bridge-domain bridge-id [split-horizon [group group-id]]

7. mac static address mac-addr [auto-learn] [disable-snooping]

8. exit

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3 

interface type number

Example:

Router(config)# interface ethernet 1/0

Configures an interface type and enters interface configuration mode.

Step 4 

service instance id ethernet [evc-id]

Example:

Router(config-if)# service instance 1 ethernet

Configures an Ethernet service instance on an interface and enters service instance configuration mode.

Step 5 

encapsulation dot1q vlan-id [,vlan-id[-vlan-id]] [native]

Example:

Router(config-if-srv)# encapsulation dot1q 100

Enables IEEE 802.1Q encapsulation of traffic on a specified subinterface in a VLAN.

Step 6 

bridge-domain bridge-id [split-horizon [group group-id]]

Example:

Router(config-if-srv)# bridge-domain 100

Binds a service instance to a bridge domain instance.

Step 7 

mac static address mac-addr [auto-learn] [disable-snooping]

Example:

Router(config-if-srv)# mac static address 0000.bbbb.cccc

Configures a static MAC address.

Step 8 

exit

Example:

Router(config-if-srv)# exit

Returns the CLI to privileged EXEC mode.

Configuring a Static MAC Address on a Pseudowire

Perform this task to manually configure a static MAC address on a Pseudowires.

SUMMARY STEPS

1. enable

2. configure terminal

3. l2 vfi name manual

4. vpn {vrf vrf-name | id vpn-id}

5. bridge-domain bridge-id vlan vlan-name

6. neighbor remote-router-id vc-id {encapsulation encapsulation-type | pw-class pw-name} [no-split-horizon]

7. mac static address mac-addr [auto-learn] [disable-snooping]

8. exit

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3 

l2 vfi name manual

Example:

Router(config)# l2 vfi test-core manual

Creates a Layer 2 VFI and enters Layer 2 VFI manual configuration mode.

Step 4 

vpn {vrf vrf-name | id vpn-id}

Example:

Router(config-vfi)# vpn id 100

Specifies that the source and destination IP addresses of a virtual private dialup network (VPDN) group belong to a specified Virtual Private Network (VPN) routing and forwarding (VRF) instance,

Step 5 

bridge-domain bridge-id vlan vlan-name

Example:

Router(config-vfi)# bridge-domain 100 vlan vlan10

Configures a VLAN for a bridge domain.

Step 6 

neighbor remote-router-id vc-id {encapsulation encapsulation-type | pw-class pw-name} [no-split-horizon]

Example:

Router(config-vfi)# neighbor 209.165.202.129 5 pw-class TestClass

Specifies the type of tunnel signaling and encapsulation mechanism for each virtual private LAN service (VPLS) peer and enters VFI neighbor configuration mode.

Step 7 

mac static address mac-addr [auto-learn] [disable-snooping]

Example:

Router(config-vfi-neighbor)# mac static address 0000.aaaa.bbbb

Configures a static MAC address.

Step 8 

exit

Example:

Router(config-vfi-neighbor)# exit

Returns the CLI to privileged EXEC mode.

Displaying Configured Static MAC Addresses

Perform this task to display the static MAC addresses that are configured. Output of these commands may be useful for troubleshooting. The show commands can be issued in any order.

SUMMARY STEPS

1. enable

2. show bridge-domain [[bridge-id] [c-mac] [mac {security [address | last violation | statistics] | static address | table [mac-address | aging-time | count]}] | split-horizon [group {group-number | all | none}] | stats]

3. show ethernet service instance [detail | id id interface type number [detail | mac {security [address | last violation | statistics] | static address}] | platform | stats] | interface type number [detail | platform | stats | summary] | mac security [address | last violation | statistics] | platform | policy-map | stats | summary]

4. show vfi [checkpoint [summary] | mac static address | memory [detail] | name vfi-name [checkpoint | mac static address] | neighbor ip-addr vcid vcid mac static address]

5. exit

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

show bridge-domain [[bridge-id] [c-mac] [mac {security [address | last violation | statistics] | static address | table [mac-address | aging-time | count]}] | split-horizon [group {group-number | all | none}] | stats]

Example:

Router# show bridge-domain 100 mac static address

Display bridge-domain information.

Step 3 

show ethernet service instance [detail | id id interface type number [detail | mac {security [address | last violation | statistics] | static address}] | platform | stats] | interface type number [detail | platform | stats | summary] | mac security [address | last violation | statistics] | platform | policy-map | stats | summary]

Example:

Router# show ethernet service instance id 1 interface ethernet 0/0 mac static address

Displays information about Ethernet service instances.

Step 4 

show vfi [checkpoint [summary] | mac static address | memory [detail] | name vfi-name [checkpoint | mac static address] | neighbor ip-addr vcid vcid mac static address]

Example:

Router# show vfi name VFI2 mac static address

Displays information about a VFI.

Step 5 

exit

Example:

Router# exit

Returns the CLI to user EXEC mode.

Configuration Examples for Static MAC Address Support on Service Instances and Pseudowires

•Example: Configuring a Static MAC Address on a Service Instance

•Example: Configuring a Static MAC Address on a Pseudowire

Example: Configuring a Static MAC Address on a Service Instance 

Router> enable

Router# configure terminal

Router(config)# interface ethernet 1/0

Router(config-if)# service instance 1 ethernet

Router(config-if-srv)# encapsulation dot1q 100

Router(config-if-srv)# bridge-domain 100

Router(config-if-srv)# mac static address 0000.bbbb.cccc

Router(config-if-srv)# exit

Example: Configuring a Static MAC Address on a Pseudowire 

Router> enable

Router# configure terminal

Router(config)# l2 vfi test-core manual

Router(config-vfi)# vpn id 100

Router(config-vfi)# bridge-domain 100 vlan vlan10

Router(config-vfi)# neighbor 209.165.202.129 5 pw-class TestClass

Router(config-vfi-neighbor)# mac static address 0000.aaaa.bbbb

Router(config-vfi-neighbor)# exit

Additional References

Related Documents

Related Topic
Document Title

Configuration guide

Cisco IOS Carrier Ethernet Configuration Guide, Release 12.2SR

Carrier Ethernet commands: complete command syntax, command mode, command history, defaults, usage guidelines, and examples

Cisco IOS Carrier Ethernet Command Reference

Cisco IOS commands: master list of commands with complete command syntax, command mode, command history, defaults, usage guidelines, and examples

Cisco IOS Master Command List, All Releases


Standards

Standard
Title

None

—


MIBs

MIB
MIBs Link

None

To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs


RFCs

RFC
Title

None

—


Technical Assistance

Description
Link

The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password.

http://www.cisco.com/cisco/web/support/index.html


Feature Information for Static MAC Address Support on Service Instances and Pseudowires

Table 1 lists the release history for this feature.

Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Note Table 1 lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Table 1 Feature Information for Static MAC Address Support on Service Instances and Pseudowires 

Feature Name
Releases
Feature Information

Static Mac for Open (Infrastructure)

12.2(33)SRE

The Static MAC Address Support on Service Instances and Pseudowires feature supports configuration of a static MAC address on a pseudoport. Use of a static MAC address for BNG upstream traffic enables traffic forwarding while conserving MAC table resources and limiting traffic flooding by creating multicast groups.

The following commands were introduced or modified: mac static address, neighbor, show bridge domain, show ethernet service instance, show vfi.


Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1005R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

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