Setup Guide

CONFIGURATION mode
ip vlan-flooding
There might be some ARP table entries that are resolved through ARP packets, which had the Ethernet MAC SA dierent from the
MAC information inside the ARP packet. This unicast data trac ooding occurs only for those packets that use these ARP entries.
Enabling a Switch for Multicast NLB
To enable a switch for Multicast NLB mode, perform the following steps:
1 Add a static ARP entry by entering the arp ip-address multicast-mac-address command in the Global conguration
mode to associate an IP address with a multicast MAC address in the switch.
CONFIGURATION mode
arp ip-address multicast-mac-address interface
This setting causes the multicast MAC address to be mapped to the Cluster IP address for the NLB mode of operation of the switch.
NOTE: While conguring static ARP for the Cluster IP, provide any one of the interfaces that is used in the static
multicast MAC conguration, where the Cluster host is connected. As the switch does not accept only one ARP-
interface pair, if you congure static ARP with each egress interface, the switch overwrites the previous egress-
interface conguration.
2 Associate specic MAC or hardware addresses to VLANs.
CONFIGURATION mode
mac-address-table static multicast-mac-address vlan vlan-id output-range interface
NOTE
: When you use the mac-address-table static multicast-mac-address command in a VLT setup, Dell
EMC Networking OS recommends to add VLTi as one of the egress interfaces along with other cluster facing interfaces.
Microsoft Network Load Balancing 521