Evpn Software Mac Learning - Cisco ASR 9000 Series Configuration Manuallines

EVPN Software MAC Learning

RP/0/RSP0/CPU0:router(config-evpn)# interface GigabitEthernet 0/0/0/1.2
Enters interface configuration mode.
Step 11
evi ethernet vpn id
Example:
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd-ac)# evi 1
Creates the ethernet VPN ID.
Step 12 Use the commit or end command.
commit - Saves the configuration changes and remains within the configuration session.
end - Prompts user to take one of these actions:
• Yes - Saves configuration changes and exits the configuration session.
• No - Exits the configuration session without committing the configuration changes.
• Cancel - Remains in the configuration mode, without committing the configuration changes.
EVPN Software MAC Learning
MAC learning is the method of learning the MAC addresses of all devices available in a VLAN.
The MAC addresses learned on one device needs to be learned or distributed on the other devices in a VLAN.
EVPN Native with software MAC Learning feature enables the distribution of the MAC addresses learned
on one device to the other devices connected to a network. The MAC addresses are learnt from the remote
devices using BGP.
Figure 71: EVPN Native with Software MAC Learning
The above figure illustrates the process of Software MAC Learning. The following are the steps involved in
the process:
1. Traffic comes in on one port in the bridge domain.
2. The source MAC address (AA) is learnt on DCI1 and is stored as a dynamic MAC entry.
3. The MAC address (AA) is converted into a type-2 BGP route and is sent over BGP to all the remote PEs
in the same EVI.
L2VPN and Ethernet Services Configuration Guide for Cisco ASR 9000 Series Routers, IOS XR Release 6.3.x
490
EVPN Features