scapeskybird.blogg.se - Control plane for mac

#CONTROL PLANE FOR MAC UPDATE#
#CONTROL PLANE FOR MAC MAC#

In this way, routes of different tenants are stored in different VRF routing tables. To isolate tenants on a VXLAN network, different VRFs (元VPNs) are used to isolate routing tables of different tenants. Mask length of the host IP address carried in the route.

#CONTROL PLANE FOR MAC MAC#

Length of the host MAC address carried in the route. Unique identifier of the connection between local and peer devices. A Layer 2 BD corresponds to an EVPN instance. It is similar to the RD of an 元VPN instance, and is used to distinguish different EVPN instances. Route distinguisher (RD) of an EVPN instance.

Flooding traffic is reduced on the network.

EVPN can advertise both Layer 2 MAC address information and Layer 3 routing information.

VTEPs can be automatically discovered and VXLAN tunnels can be automatically established, simplifying network deployment and expansion.

Using EVPN as the control plane of VXLAN has the following advantages: In this way, learning of host IP address and MAC address information can be implemented on the control plane, suppressing traffic flooding on the data plane. After a VTEP learns the IP address and MAC address of a connected host, the VTEP can send the information to other VTEPs through MP-BGP routes. EVPN NLRI defines several types of BGP EVPN routes, which can carry information such as the host IP address, MAC address, VNI, and VRF. In the EVPN address family, a new type of NLRI is added, that is, EVPN NLRI. Similarly, EVPN uses the MP-BGP mechanism and defines a new sub-address family, EVPN address family, in the L2VPN address family.

After extension, the description of the address family is added to NLRI to differentiate network layer protocols, such as the IPv6 unicast address family and VPN instance address family. BGP-4 can manage only IPv4 unicast routing information, so MP-BGP was developed to support multiple network layer protocols, such as IPv6 and multicast. These routes are carried in the Network Layer Reachability Information (NLRI) field.

#CONTROL PLANE FOR MAC UPDATE#

An Update message can advertise reachable routes with the same path attribute. Traditional BGP-4 peers use Update messages to exchange routing information. Before understanding fundamentals of EVPN, let's review MP-BGP. Figure 1-1 EVPN functioning as the control plane of VXLANĮVPN uses the MP-BGP mechanism.