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The Multicast and Unicast static MAC address support on Service Instances 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.
Static MAC configuration is not allowed at secure service instance.
Static MAC addresses are programmed only on switch processors (both active and standby).
The Static MAC address on Pseudowires is not supported on the Cisco ASR 900 Series Routers.
Static MAC address configuration is not supported on Trunk EFP.
Static MAC address configuration on service instances 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.
When a bridge domain ID is either changed or deleted for a service instance, all static MAC addresses are removed.
When a service instance is deleted, all static MAC addresses on that pseudoport are removed.
Perform this task to manually configure a static MAC address on a service instance.
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]]
6.
bridge-domain
bridge-id
[split-horizon[group
group-id]]
7.
mac
static
address
mac-addr
8.
exit
Router> enable Router# configure terminal Router(config)# interface GigabitEthernet 0/2/1 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
The sample output for the show bridge-domain command:
Router# show bridge-domain 10 mac static address Bridge-Domain ID : 10 Static MAC count : System : 1, bridge-domain : 1 Port Address Action Gi0/3/7 ServInst 10 aaa1.123c.bc32
Related Topic |
Document Title |
---|---|
Configuration guide |
Cisco IOS Carrier Ethernet Configuration Guide, Cisco IOS XE Release (ASR 903) |
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 |
Standard |
Title |
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None |
-- |
MIB |
MIBs Link |
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None |
To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL: |
RFC |
Title |
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None |
-- |
Description |
Link |
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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. |
The following table provides release information about the feature or features described in this module. This table 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.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Feature Name |
Releases |
Feature Information |
---|---|---|
Static MAC Address Support on Service Instances |
Cisco IOS XE Release 3.7S |
The Static MAC Address Support on Service Instances 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 |