Extreme Networks e" series, Руководство по установке оборудования

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188 Extreme Networks Consolidated "e" and "i" Series Hardware Installation Guide
Alpine 3800 Series I/O Modules
Table 37 describes the media types and the associated maximum distances for the GM-16X 3 module.
Each of the 16 ports in the GM-16X 3 is capable of supporting up to a full gigabit of traffic with a
maximum module throughput of 4 Gigabits to the Alpine backplane. When a GM-16X 3 is operational in
an Alpine 3808, and five or more ports of ports 1 through 8 or ports 9 through 16 are simultaneously
forwarding unusually high rates of small, uniformly sized packets (for example, 64 Byte), the
bandwidth through each port can be lower than the expected minimum of 250 Mbps.
When you install and configure a GM-16X 3 module, Extreme Networks does not recommend using the
port-based load-sharing (link-aggregation) algorithm when the share has more than four ports because
traffic coming from the GM-16X
3 or GM-16T 3 modules will only load-share over the first four ports of
the share. Load-sharing using other load balancing algorithms can have up to eight links.
Mini-GBIC Ports
The GM-16X 3 module supports any of the following mini-GBICS:
• SX mini-GBIC
• LX mini-GBIC
• ZX mini-GBIC
NOTE
For more information about the supported mini-GBIC types, see “Mini-GBIC Types” on page 23.
LEDs
The GM-16X 3 module has the following LEDs:
• Module status
• Port status
For information about the LEDs and their activity on the GM-16X
3
module, see “I/O Module LEDs” on
page 202.
Software Requirements
The GM-16X
3
module requires ExtremeWare version 7.0.1b11 or later and BootROM 7.8 or later on the
switch.
Table 37: GM-16X 3 media types and distances
Mini-GBIC Type Media Type
Maximum Distance
(meters)
1000BASE-SX multimode fiber 550
1000BASE-LX single-mode fiber 10,000
1000BASE-ZX single-mode fiber 70,000