The network ingress QoS policy can be applied either to the network interface over which the VXLAN traffic arrives or under vxlan/network/ingress within the EVPN service.
Regardless of where the network QoS policy is applied, the ingress network QoS policy is used to classify the VXLAN packets based on the outer dot1p (if present), then the outer DSCP, to yield an FC/profile.
If the ingress network QoS policy is applied to the network interface over which the VXLAN traffic arrives then the VXLAN unicast traffic uses the network ingress queues configured on FP where the network interface resides. QoS control of BUM traffic received on the VXLAN tunnels is possible by separately redirecting these traffic types to policers within an FP ingress network queue group. This QoS control uses the per forwarding class fp-redirect-group parameter together with broadcast-policer, unknown-policer, and mcast-policer within the ingress section of a network QoS policy. This QoS control applies to all BUM traffic received for that forwarding class on the network IP interface on which the network QoS policy is applied.
The ingress network QoS policy can also be applied within the EVPN service by referencing an FP queue group instance, as follows:
configure
service
vpls <service-id>
vxlan vni <vni-id>
network
ingress
qos <network-policy-id>
fp-redirect-group <queue-group-name>
instance <instance-id>
In this case, the redirection to a specific ingress FP queue group applies as a single entity (per forwarding class) to all VXLAN traffic received only by this service. This overrides the QoS applied to the related network interfaces for traffic arriving on VXLAN tunnels in that service but does not affect traffic received on a spoke SDP in the same service. It is possible to also redirect unicast traffic to a policer using the per forwarding class fp-redirect-group policer parameter, as well as the BUM traffic as above, within the ingress section of a network QoS policy. The use of ler-use-dscp, ip-criteria and ipv6-criteria statements are ignored if configured in the ingress section of the referenced network QoS policy. If the instance of the named queue group template referenced in the qos command is not configured on an FP receiving the VXLAN traffic, then the traffic uses the ingress network queues or queue group related to the network interface.