3Com Switches, The Hub 1000 SX does not support bandwidth aggregation trunking, Aggregating

Aggregating Switches 3-3

SuperStack II

Switch 9300

Single-mode fiber-optic cable	SuperStack II
Maximum distance: 3 km	Hub 1000 SX

62.5/125 ∝ fiber-optic cable

Maximum distance: 260 m

Servers with 3C985-SX

Gigabit EtherLink Server NICs

High-end

workstations

Figure 3-2Power Workgroup Connection

Aggregating	You can use the Hub 1000 SX downlinks to aggregate 10/100 Mbps
Switches	switches such as the 3Com SuperStack II Switch 1000, Switch 3000,
	or Switch 3900. The Switch 1000 and Switch 3000 units must be
	equipped with Gigabit Ethernet uplink devices (SuperStack II Switch
	Gigabit Ethernet SX Module, part number 3C16925). The Switch 3900
	has one built-in Gigabit Ethernet port, which can be used to connect with
	the Hub 1000 SX.

First, install 3C16925 uplink devices in the SuperStack II Switch 1000 or SuperStack II Switch 3000 switches. Then connect up to eight switches to the Hub 1000 SX through the eight downlinks. The hub’s optional GBIC uplink can connect to a 3Com SuperStack II Switch 9300 Gigabit Ethernet switch, thereby connecting to the network backbone. See Figure 3-3.

The Hub 1000 SX does not support bandwidth aggregation (trunking).