Extreme Networks BlackDiamond 12804 - Manual (Page 26)

BlackDiamond 12800 Series Modules
BlackDiamond 12800 Series Switches Hardware Installation Guide 26
Figure 10: GM-20XTR I/O Module
NOTE
Although the GM-20XT module and the GM-20XTR module are similar in appearance, they have different
functionality. The GM-20XTR is part of the R series and includes the rate limiting feature; the GM-20XT module
does not support rate limiting.
To use rate limiting, you must install the MSM-5R plus the GM-20XTR I/O module and/or the XM-2XR I/O module.
The GM-20XT module and GM-20XTR I/O module have 20 autosensing 10/100/1000BASE-T ports that
use standard RJ-45 connectors and 20 SFP ports. Each pair of ports operates as a combination port.
Either the copper port or the fiber port can be active, but not both. You can set up a redundant link by
connecting both the copper and fiber ports in the pair. The port that is connected first becomes the
active port. If that port fails, the second port automatically becomes active. For more information about
redundant ports and automatic failover, see the ExtremeXOS Concepts Guide.
The default configuration of the GM-20XT and GM-20XTR I/O module is as follows. All ports:
● Are added to the default VLAN as untagged.
● Inherit the properties of the default VLAN (for example, protocol type and VLANid).
● Operate in autonegotiation mode.
GM-20XT and GM-20XTR LEDs
The GM-20XT and GM-20XTR I/O modules have the following LEDs:
● Module status
● Module diagnostics
● Port status
XM-2X and XM-2XR I/O Modules
Figure 11 shows the XM-2X I/O module, and Figure 12 shows the XM-2XR I/O module.
EX_154h
10/100/1000BASE-T ports
Mini-GBIC
fiber ports
Module status
LEDs