Service Manual

Conguring a Switch for NLB
To enable a switch for Unicast NLB mode, perform the following steps:
Enter the ip vlan-flooding command to specify that all Layer 3 unicast routed data trac going through a VLAN member
port oods across all the member ports of that VLAN.
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.
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 Global conguration
mode to associate an IP address with a multicast MAC address in the switch.
INTERFACE 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.
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
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