Configuring a Static MAC Address
This section describes how to configure a static MAC address on the router. For an overview of static MAC
addresses, see
Static MAC Addresses, on page 19
.
Limitations
The following limitations apply when configuring static MAC addresses:
•
Static MAC addresses are supported only on egress ports.
•
You can configure up to 1024 multicast static MAC addresses
•
You can assign up to 24 EFPs to a bridge domain configured with a multicast static MAC address.
•
MAC entries configured across different bridge-domains are represented as separate entries in the router
MAC table.
•
Multicast static MAC addresses apply only to layer 2 traffic; layer 3 multicast traffic is not affected by
a static MAC configuration and is forwarded to all EFPs in a bridge domain.
Configuring a Static MAC Address
SUMMARY STEPS
1.
configure terminal
2.
interface interface-id
3.
no ip address
4.
no negotiation auto
5.
service instance number ethernet
[
name
]
6.
encapsulation
{
default
|
dot1q
|
priority-tagged
|
untagged
}
7.
bridge-domain bridge-id
[
split-horizon group group-id
]
8.
mac static address address
9.
end
DETAILED STEPS
Purpose
Command or Action
Enter global configuration mode.
configure terminal
Example:
Router#
configure terminal
Step 1
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
43
Ethernet Virtual Connections Configuration
Configuring a Static MAC Address
