Gm-16X 3 Module - Extreme Networks Summit Summit1i Hardware Installation Manual

Alpine 3800 Series I/O Modules
GM-16X 3 Module
Figure 73 shows the GM-16X
3
Figure 73: GM-16X module
Port status LEDs
Module
status LED
3
The GM-16X module has 16 1000BASE-X ports using mini-GBIC (or small form factor pluggable (SFP))
slots.
3
The GM-16X ports are oversubscribed 4:1 to the Alpine backplane. The module has four groups of four
ports each. Each group multiplexes traffic into a single full duplex gigabit link to the switch fabric.
To take advantage of this architecture, use a single port in each group before using all of the ports in
any particular group. Table 47 lists the port groups for the GM-16X
3
Table 47: GM-16X port groups
Ports Group
1, 2, 3, 4 1
5, 6, 7, 8 2
9, 10, 11, 12 3
13, 14, 15, 16 4
Populate ports 1, 5, 9, and 13, then ports 2, 6, 10, and 14, followed by ports 3, 7, 11, and 15, and finally
ports 4, 8, 12, and 16.
NOTE
If congestion is detected on a port with flow control enabled, a flow control PAUSE frame is sent out
that port. The PAUSE frame is not sent out on the other ports in the group.
Table 48 lists the number of GM-16X
3
Table 48: GM-16X configurations supported
Chassis
Alpine 3802
Alpine 3804
Alpine 3808
158
3 module.
Mini-GBIC ports
3
modules that you can install in an Alpine chassis.
GM-16X 3 Modules
1 (or 1 GM-16T 3 module),
installed in slot 1 or slot 2 only
4
8
GM16X3
3 module.
Extreme Networks Consolidated "i" Series Hardware Installation Guide