Reference Guide

Layer 2 | 417
When NIC teaming is employed, consider that the server MAC address is originally learned on Port 0/1 of
the switch (Figure 20-3). When the NIC fails, the same MAC address is learned on Port 0/5 of the switch.
The MAC address must be disassociated with the one port and re-associated with another in the ARP table;
in other words, the ARP entry must be “moved”. To ensure that this happens, you must configure the
command
mac-address-table station-move refresh-arp on the Dell Networking switch at the time that
NIC teaming is being configured on the server.
Figure 20-3. Configuring mac-address-table station-move refresh-arp Command
MAC Move Optimization
MAC Move Optimization is supported only on platform: e
Station-move detection takes 5000ms because this is the interval at which the detection algorithm runs. On
the E-Series, you can reduce detection time to as little as 500ms using the command
mac-address-table
station-move threshold time-interval (though at the expense of CPU resources).
threshold is the number of times a station move must be detected in a single interval in order to trigger a
system log message. For example, if you configure
mac-address-table station-move threshold 2
time-interval 5000, and 4 station moves occur in 5000ms, then two log messages are generated.
Microsoft Clustering
Microsoft Clustering is supported on the E, S55, and S60 platforms: e
Note: If this command is not configured, traffic continues to be forwarded to the failed NIC until the ARP
entry on the switch times out.
MAC: A:B
A:B:C:D
IP: 1.1.1.1
fnC0026m
p
X
Port 0/1
Port 0/5
Move MAC
address
Active Link
m
ac-address-table station-move refresh-arp
configured at time of NIC teaming