Port Trunking - Buffalo TeraStation 5200DS User Manual

Network attached storage
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Notes:
• If the TeraStation is connected directly to a UPS, select "Sync with UPS connected to this TeraStation". If a different
TeraStation is connected to the UPS, select "Sync with UPS connected to another LinkStation or TeraStation on
the same network". After making this selection, enter the IP address of the TeraStation that will be the sync source
into "Other LinkStation or TeraStation's IP Address".
• When the TeraStation is restarted after an automatic shutdown such as from a power outage or power supply
problem, verify that the power supply has been restored and a minute has passed since the power supply has
been restored. If the TeraStation is turned on while it is still running on the UPS and without the power supply
restored, automatic shutdown will not be performed, even after the specified time elapses.
• If the power supply from the UPS to the TeraStation is stopped and restarted when UPS recovery is enabled, the
TeraStation is automatically restarted.

Port Trunking

Two Ethernet cables can be used to establish two separate communication routes, providing LAN port redundancy
and improving communication reliability. The use of two Ethernet cables enables access to the TeraStation even if
one of the cables is disconnected.
The port trunking modes that can be set in the TeraStation are shown below.
Trunking Mode
Round-robin
*
Active-backup
XOR
*
Broadcast
Dynamic link aggregation
TLB
* A separate intelligent switch that supports EtherChannel or other port trunking is required. Configure two LAN
ports on the switch for port trunking first.
Note: If the TeraStation is being used as an iSCSI hard drive, disable iSCSI before changing network settings such as
port trunking. Navigate to Drives - iSCSI in Settings and move the iSCSI switch to the off position temporarily.
1
Use an Ethernet cable to connect the hub LAN port and TeraStation LAN port 1.
Notes:
• Do not connect the second Ethernet cable to the TeraStation yet.
• If using an intelligent switch, configure the LAN ports on the switch first, before connecting to the
TeraStation.
2
In Settings, click Network.
Characteristics
Network packets are transmitted in sequential order from the first
available NIC slave through the last.
Only one NIC slave in the bond is active. A different slave becomes
active if and only if the active slave fails.
Transmits network packets based on [(source MAC address XOR'd
with destination MAC address) modulo NIC slave count]. This selects
the same NIC slave for each destination MAC address.
Transmits network packets on all slave network interfaces.
Creates aggregation groups that share the network speed and duplex
settings. Utilizes all slave network interfaces in the active aggregator
group according to the 802.3ad specification.
Note: To use this mode, a separate intelligent switch that supports
IEEE 802.3ad is required. Configure LACP on the switch first.
The outgoing network packet traffic is distributed according to the
current load (relative to the speed) on each network interface slave.
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