Product Overview
September 2007 © 2007 Foundry Networks, Inc. 2 - 3
• 100/1000 ports with mini-GBIC slots for SFP MSA-compliant fiber transceivers
• Optional 10-Gigabit uplink modules
For information about the type of fiber optic modules supported on the FastIron LS, see “Fiber Optic Modules” on
page 2-7.
FastIron LS 10/100/1000BASE-T Ports
The switches contain 24/48 RJ-45 ports that operate at 10 Mbps or 100 Mbps, half or full duplex, or at 1000 Mbps,
full duplex. Because all ports on these switches support automatic MDI/MDI-X operation, you can use straight-
through cables for all network connections to PCs or servers, or to other switches or hubs. (See “1000BASE-T Pin
Assignments” on page B-3.) In addition, it is ideal and preferred to use MDIX cable for switch-to-switch
connections.
Each of these ports support auto-negotiation, so the optimum transmission mode (half or full duplex), and data
rate (10, 100, or 1000 Mbps) can be selected automatically. If a device connected to one of these ports does not
support auto-negotiation, the communication mode of that port can be configured manually.
Network Interfaces
Table 2.2 describes the network interfaces supported on the FastIron LS. For network interface specifications, see
the table “Cable length summary table” on page 2-7.
Table 2.2: Network Interfaces
Interface Show Media
Description
1000Base-BX-D M-GBXD
1000Base-BX-U M-GBXU
1000Base-LHA M-LHA
1000Base-LHB M-LHB
1000Base-LX M-LX
1000Base-SX M-SX
1000Base-SX2 M-SX2
1000Base-T C
100Base-BX M-FBX
100Base-FX M-FX
10GBase-CX4 XG-ER
10GBase-CX4 (XFP) XG-ER
10GBase-ER XG-ER
10GBase-LR XG-LR
10GBase-LRM XG-LRM
10GBase-SR XG-SR
10GBase-ZR XG-ZR
10GBase-ZRD XG-ZRD
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