Confining floods to the local site
By default, the VTEP floods broadcast, unknown unicast, and unknown multicast frames received from the local site to the following interfaces in the frame's VXLAN:
All site-facing interfaces except for the incoming interface.
All VXLAN tunnel interfaces.
To confine a kind of flood traffic to the site-facing interfaces, disable flooding for that kind of flood traffic on the VSI bound to the VXLAN. The VSI will not flood the corresponding frames to VXLAN tunnel interfaces.
To ensure correct traffic forwarding, do not disable flooding for VSIs if OpenFlow is used to issue Layer 3 flow entries for VXLANs.
As a best practice, do not execute both the bandwidth and selective-flooding mac-address commands on a VSI. Traffic cannot be forwarded correctly if you use these commands together.
To confine floods to site-facing interfaces for a VXLAN:
Step | Command | Remarks | |
|---|---|---|---|
1. Enter system view. | system-view | N/A | |
2. Enter VSI view. | vsi vsi-name | N/A | |
3. Disable flooding for the VSI. | flooding disable { all | { broadcast | unknown-multicast | unknown-unicast } * } | By default, flooding is enabled for a VSI. | |
4. (Optional.) Enable selective flood for a MAC address. | selective-flooding mac-address mac-address | By default, selective flood is disabled. Use this feature to exclude a remote unicast or multicast MAC address from the flood suppression done by using the flooding disable command. The VTEP will flood the frames destined for the specified MAC address to remote sites when floods are confined to the local site. | |