BGP EVPN VXLAN

In this section:

  1. BGP EVPN
    Border Gateway Protocol (BGP) Ethernet Virtual Private Network (EVPN) provides an efficient control plane protocol for a Virtual eXtensible LAN (VXLAN).
  2. BGP EVPN Considerations and Limitations
    Consider the following when configuring BGP EVPN.
  3. BGP EVPN Configuration
    A VXLAN network is composed of two primary components: the underlay and the overlay networks. Virtual Tunnel Endpoints (VTEPs) are positioned at the boundaries of the underlay network, enabling Layer 2 and Layer 3 connectivity between customer edge devices, or tenant systems, within the overlay network. The underlay network serves as a logical switching fabric, supporting the tenant systems in the overlay network.
  4. BGP Commands Supported for BGP EVPN
  5. BGP L2VPN EVPN Address Family
  6. Configuring BGP EVPN Route Filters
    An Ethernet Virtual Private Network (EVPN) prefix list can be configured, permitting or denying specific routes. By default, routes that do not match a prefix list are learned or advertised. To prevent a route from being learned or advertised, you must configure and apply a prefix list to deny the route.
  7. Configuring BGP EVPN Route Maps
    Route maps can be used in the inbound or outbound direction for BGP peers for EVPN routes. When a route map is applied to a BGP peer, a ROUTE REFRESH message is sent. This results in the remote peer resending all the EVPN routes. If a route is already learned from a peer, the route map is applied. This results in the route being denied or the matching condition not being found. The learned route is then removed.
  8. Creating an EVPN Instance
    A Layer 2 Ethernet Virtual Private Network (EVPN) instance can be created so that a device enters EVPN EVI configuration mode. After the device enters EVPN EVI configuration mode, you can configure a variety of EVPN options. Perform the following steps to enter EVPN EVI configuration mode.
  9. Configuring an EVPN Instance
    After a Layer 2 Ethernet Virtual Private Network (EVPN) instance is created, the device enters EVPN EVI configuration mode, allowing a variety of EVPN options can be configured in EVPN EVI configuration mode.
  10. Creating a Range of EVPN Instances
    A range of Layer 2 Ethernet Virtual Private Network (EVPN) instances can be created. Perform the following steps to create a range of EVPN instances.
  11. ARP Suppression for BGP EVPN Overview
    Address Resolution Protocol (ARP) suppression reduces the flooding of ARP messages in the EVPN network, leading to a more efficient use of core bandwidth.
  12. Displaying BGP EVPN Information
    You can use various show commands to view information about BGP EVPN.