Developers Guide

Microsoft Network Load Balancing
Network load balancing (NLB) is a clustering functionality that is implemented by Microsoft on Windows 2000 Server and
Windows Server 2003 operating systems. Microsoft NLB clustering allows multiple servers running Microsoft Windows to be
represented by one MAC and one IP address to provide transparent failover and load-balancing. The Dell EMC Networking OS
does not recognize server clusters by default; you must configure NLB functionality on a switch to support server clusters. The
maximum NLB entry limit from 8 to 11 is increased and support for more CAM-ACL to increase.
Topics:
• mac-address-table static (for Multicast MAC Address)
• ip vlan-flooding
mac-address-table static (for Multicast MAC
Address)
For multicast mode of network load balancing (NLB), configure a static multicast MAC address, associate the multicast MAC
address with the VLAN used to switch Layer 2 multicast traffic, and add output ports that will receive multicast streams on
the VLAN. To delete a configured static multicast MAC address from the MAC address table on the router, enter the no
mac-address-table static multicast-mac-address command.
Syntax
mac-address-table static multicast-mac-address multicast vlan vlan-id
range-output {single-interface | interface-list | interface-range}
To remove a MAC address, use the no mac-address-table static multicast-mac-address
output interface vlan vlan-id command.
Parameters
multicast-mac-
address
Enter the 48-bit hexadecimal address in nn:nn:nn:nn:nn:nn format.
multicast Enter a vlan port to where L2 multicast MAC traffic is forwarded.
NOTE: Use this option if you want multicast functionality in an L2 VLAN
without IGMP protocols.
output interface For a multicast MAC address, enter the keyword output then one of the following
interfaces for which traffic is forwarded:
● For a Port Channel interface, enter the keywords port-channel then a
number.
● For a 1-GigabitEthernet interface, enter the keyword GigabitEthernet then
the slot/port information.
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
output-range
interface
For a multicast MAC address, enter the keyword output-range then one of the
following interfaces to indicate a range of ports for which traffic is forwarded:
● For a 1-GigabitEthernet interface, enter the keyword GigabitEthernet then
the slot/port information.
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
● For a Management interface, enter the keyword managementethernet followed
by slot/port numbers.
● For a Port Channel interface, enter the keywords port-channel followed by a
number.
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