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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 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.
arp (for Multicast MAC Address)
To associate an IP address of a server cluster with a multicast MAC address in the switch for the multicast
mode of network load balancing (NLB), use the address resolution protocol (ARP).
Syntax
arp ip-address multicast-mac-address interface
To remove an ARP address, use the no arp ip-address command.
Parameters
ip-address Enter an IP address in dotted decimal format.
multicast-mac-
address
Enter a 48-bit hexadecimal address in nn:nn:nn:nn:nn:nn
format for the static MAC address to be used to switch
multicast traffic.
interface Enter any of the following keywords and slot/port or number
information:
• For a Port Channel interface, enter the keywords port-
channel then a number. The range is from 1 to 128.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
• For a 40-Gigabit Ethernet interface, enter the keyword
fortyGigE then the slot/port information.
• The specified interface must be configured using the
{output-range | output} interface option with
the
mac-address-table static command.
Defaults Not configured.
Command
Modes
CONFIGURATION
Microsoft Network Load Balancing
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