Cisco IOS XE Gibraltar 16.12.1

EVPN VXLAN Overlay Network for IPv4 Bridged Traffic

EVPN VXLAN overlay network for IPv4 bridged traffic is a Layer 2 overlay network that allows host devices within the same subnet to send IPv4 bridged traffic to each other using a Layer 2 virtual network instance (VNI).

EVPN VXLAN Overlay Network for IPv4 Routed Traffic

EVPN VXLAN overlay network for IPv4 routed traffic is a Layer 3 overlay network that allows host devices in different Layer 2 networks to send IPv4 routed traffic to each other using a Layer 3 VNI and an IP VRF.

Layer 2 Broadcast, Unknown Unicast, and Multicast (BUM) Traffic Forwarding using Underlay Multicast

Multi-destination Layer 2 broadcast, unknown unicast, and multicast (BUM) traffic in an EVPN VXLAN network is replicated through a multicast group in the underlay network and forwarded to all the endpoints of the network.

Leaf Functionality

A leaf switch sits on the edge of a BGP EVPN VXLAN fabric and is connected to the host or access devices. It functions as a virtual tunnel end point (VTEP) and performs encapsulation and decapsulation.

EVPN VXLAN Integrated and Bridging

EVPN VXLAN integrated and bridging (IRB) allows the VTEPs in a VXLAN network to forward both Layer 2 or bridged traffic and Layer 3 or routed traffic. It is implemented as symmetric and asymmetric IRB.

EVPN VXLAN Distributed Anycast Gateway

EVPN VXLAN distributed anycast gateway is a default gateway addressing mechanism that enables the use of the same gateway IP address across all the leaf switches that are part of a VXLAN network.

Support was introduced with manual MAC address configuration on the Layer 2 VNI VLAN’s switch virtual interface (SVI) on all VTEPs as the only method to enable the feature.

DHCP Relay for IPv4 Traffic in BGP EVPN VXLAN Fabric

The VTEP in a BGP EVPN VXLAN fabric is configured as a DHCP relay agent to provide DHCP relay services for IPv4 traffic in a multi-tenant VXLAN environment.

EVPN VXLAN Overlay Network for IPv6 Bridged Traffic

EVPN VXLAN overlay network for IPv6 bridged traffic is a Layer 2 overlay network that allows host devices within the same subnet to send IPv6 bridged traffic to each other using a Layer 2 VNI.

EVPN VXLAN Overlay Network for IPv6 Routed Traffic

EVPN VXLAN overlay network for IPv6 routed traffic is a Layer 3 overlay network that allows host devices in different Layer 2 networks to send IPv6 routed traffic to each other using a Layer 3 VNI and an IP VRF.

Layer 2 Broadcast, Unknown Unicast, and Multicast (BUM) Traffic Forwarding using Ingress Replication

Ingress replication is a unicast approach to handle multi-destination Layer 2 BUM traffic in an EVPN VXLAN network. It involves an ingress device replicating every incoming BUM packet and sending them as a separate unicast to the remote egress devices.

MAC Aliasing for EVPN VXLAN Distributed Anycast Gateway

MAC aliasing allows the leaf switches in an EVPN VXLAN network to advertise the MAC addresses of their Layer 2 VLAN’s SVI as the gateway MAC address to all the other leaf switches in the network.

MAC aliasing removes the need to explicitly configure the same MAC address on the Layer 2 VNI VLAN’s SVI on all VTEPs in order to enable distributed anycast gateway.

Border Leaf Functionality

A border leaf switch is a leaf switch in a BGP EVPN VXLAN fabric that enables external connectivity with other Layer 2 and Layer 3 networks by acting as the connecting node between the two networks.

Autonomous System Number Rewrite

The rewrite-evpn-rt-asn command was introduced to enable the rewrite of the autonomous system number (ASN) portion of the EVPN route target that originates from the current autonomous system with the ASN of the target eBGP EVPN peer.

VRF-Lite Border Leaf Handoff

VRF-Lite border leaf handoff in a BGP EVPN VXLAN fabric allows Layer 3 external connectivity with a VRF-Lite network through a border leaf switch.

MPLS Layer 3 VPN Border Leaf Handoff

MPLS Layer 3 VPN border leaf handoff in a BGP EVPN VXLAN fabric allows Layer 3 external connectivity with an MPLS Layer 3 VPN network through a border leaf switch.

IEEE 802.1Q Border Leaf Handoff

IEEE 802.1Q border leaf handoff in a BGP EVPN VXLAN fabric allows Layer 2 external connectivity with an IEEE 802.1Q network through a border leaf switch.

Access Border Leaf Handoff

Access border leaf handoff in a BGP EVPN VXLAN fabric allows Layer 2 external connectivity with an Access network through a border leaf switch.

VPLS over MPLS Border Leaf Handoff

VPLS over MPLS border leaf handoff in a BGP EVPN VXLAN fabric allows Layer 2 external connectivity with a VPLS over MPLS network through a border leaf switch.

Cisco IOS XE Amsterdam 17.1.1

Spine Functionality

A spine switch acts as the connecting node between all the leaf switches in a BGP EVPN VXLAN fabric, forwards the traffic between the leaf switches and provides redundancy to the network.

Border Spine Functionality

A border spine switch in a BGP EVPN VXLAN fabric enables external connectivity with other Layer 2 and Layer 3 networks by acting as the connecting node between the two networks.

ARP and IPv6 Neighbor Discovery Flooding Suppression

Flooding suppression avoids the flooding of ARP and IPv6 neighbor discovery packets over the VXLAN network to the local and remote host or access devices.

Layer 3 Tenant Routed Multicast for IPv4 Traffic

Layer 3 tenant routed multicast (TRM) for IPv4 traffic enables multicast forwarding for IPv4 traffic in a BGP EVPN VXLAN fabric. It provides multi-tenancy-aware multicast forwarding between senders and receivers within the same subnet or different subnets, locally or across VTEPs.

You can configure TRM with PIM sparse mode (PIM-SM) using anycast RP mode and TRM with PIM source specific mode (PIM-SSM).

VRF-Lite Border Spine Handoff

VRF-Lite border spine handoff in a BGP EVPN VXLAN fabric allows Layer 3 external connectivity with a VRF-Lite network through a border spine switch.

MPLS Layer 3 VPN Border Spine Handoff

MPLS Layer 3 VPN border spine handoff in a BGP EVPN VXLAN fabric allows Layer 3 external connectivity with an MPLS Layer 3 VPN network through a border spine switch.

IEEE 802.1Q Border Spine Handoff

IEEE 802.1Q border spine handoff in a BGP EVPN VXLAN fabric allows Layer 2 external connectivity with an IEEE 802.1Q network through a border spine switch.

Access Network Border Spine Handoff

Access border spine handoff in a BGP EVPN VXLAN fabric allows Layer 2 external connectivity with an Access network through a border spine switch.

VPLS over MPLS Border Spine Handoff

VPLS over MPLS border spine handoff in a BGP EVPN VXLAN fabric allows Layer 2 external connectivity with a VPLS over MPLS network through a border spine switch.

Configuring VXLAN-Aware Flexible Netflow

VXLAN-aware Flexible Netflow captures the VXLAN flow information for both bridged and routed traffic.

BGP EVPN VXLAN MIB support

Support was introduced for the MIB.

Cisco IOS XE Amsterdam 17.2.1

EVPN VXLAN Centralized Default Gateway

EVPN VXLAN Centralized Default Gateway allows a single VTEP in the EVPN VXLAN network to act as the Layer 3 gateway for all the Layer 2 VNIs in the network.

Cisco IOS XE Amsterdam 17.3.1

Layer 3 Tenant Routed Multicast for IPv6 Traffic

Layer 3 TRM for IPv6 traffic enables multicast forwarding for IPv6 traffic in a BGP EVPN VXLAN fabric. It provides multi-tenancy-aware multicast forwarding between senders and receivers within the same subnet or different subnets, locally or across VTEPs.

Support was introduced to configure TRM with PIM-SSM and TRM with PIM-SM.

Enhanced RP Functionality for Layer 3 TRM for IPv4 and IPv6 traffic

Enhancement was introduced for the configuration of an RP in the overlay network for TRM with PIM-SM. The enhancement allows you to configure an RP on a single or multiple VTEPs inside the BGP EVPN VXLAN fabric or on a device outside the fabric.

Interworking of Layer 3 TRM with MVPN Networks for IPv4 Traffic

Interworking of Layer 3 TRM with MVPN Networks allows you to forward IPv4 Layer 3 multicast traffic between sources and receivers of an EVPN VXLAN network and an MVPN network.

Broadcast, Unknown Unicast, and Multicast Traffic Rate Limiting

BUM Traffic Rate Limiting allows you to use a policer and set the flood rate limit of the BUM traffic in the network to a predefined value.

Cisco IOS XE Amsterdam 17.3.2a

VNI Support Enhancement

Support for up to 512 VNIs (Layer 2 and Layer 3 VNIs combined) per VTEP was introduced.

Route Type 2 (RT 2) to Route Type 5 (RT 5) Host Route Reorigination for Overlay Networks with a Centralized Gateway (Asymmetric IRB)

RT 2 to RT 5 reorigination allows a Layer 2 and Layer 3 VXLAN network to import IP addresses from another Layer 2-only VXLAN network. A centralized gateway VTEP can reoriginate any RT 2 host routes, that it learns from the Layer 2 EVPN segment (or MAC VRF), as RT 5 routes in the Layer 3 EVPN segment (or IP VRF).

Cisco IOS XE Bengaluru 17.6.1

Private VLANs (PVLANs) in a BGP EVPN VXLAN Fabric

BGP EVPN VXLAN allows you to extend a PVLAN across the VTEPs in an EVPN fabric overlay. The extension uses isolated and community VLANs to provide features like subnet management and sub segmentation of a broadcast domain in the fabric.

Route Leaking between EVPN and Global Routing Table

The route leaking feature provides the import and export of routes between an EVPN-enabled VRF and the Global Routing Table (GRT). By enabling the import and export of the EVPN learned routes into the GRT, the border node provides access to services such as DNS or DHCP to the hosts in the fabric.

EVPN VXLAN Multi-homing in Single-active Redundancy Mode

Multi-homing provides redundancy in the connection between a customer edge (CE) device and a VTEP by connecting the customer network with multiple VTEPs in an EVPN VXLAN network.

In single-active redundancy mode, only one VTEP, among a group of VTEPs that are attached to the particular ethernet segment, is allowed to forward traffic to and from that ethernet segment.

Multi-homing in single-active redundancy mode was introduced only in the form of dual-homing, allowing a CE device to be connected to two VTEPs.

Cisco IOS XE Bengaluru 17.6.2

Data MDT Support for L3 TRM

Data MDTs are purpose built underlay MDTs to provide optimized forwarding in the MVPN and EVPN core.