12000 Series Switches
True Scale Fabric Switches 12000 Series Hardware
Installation Guide
July 2015
58
Order Number: G91928004US
However, if the user wishes to connect two externally-managed 12200s together, but
does not want to have 8x links, cable the ports such that 8x DUOs are not formed. For
example, connect port 1 of the first externally-managed 12200 to port 1 of the second
externally-managed switch, then connect port 19 of the first externally-managed
switch to a port
other than
port 19 of the second externally-managed switch.
Note:
If an externally-managed 12200 switch is connected to a port on another 12000-series
switch that has 1x/4x/8x enabled (for example, another externally-managed 12200),
but the cabling does not form an 8x DUO, the link will come up as a 4x link. Since both
sides of the link have 8x enabled (and are capable of being an 8x connection), but the
link is up at 4x, certain tools (for example, the Intel
®
FastFabric
iba_report -o
slowlinks
command) may flag this connection as not being linked up at its optimum
capability.
2.9.5.3
Creating an 8x Port: 12800-180
For the 12800-180, 8x DUOs are configured on the leaf modules as follows:
Ultra-high Performance (UHP) Leaf (18 4x QDR ports)
: combine the 4X port on
the bottom row with the 4X port directly above it (for example, port 1 with port 10, port
2 with 11, port 3 with port 12, etc.).
Ultra-high Density (UHD) Leaf (24 4x QDR ports)
: for ports 1 through 18,
combine the 4X port on the bottom row with the 4X port directly above it (for example,
port 1 with port 10, port 2 with 11, port 3 with port 12, etc.). For ports 19 through 24
DUOs are made by combing the ports sequentially (that is, port 19 and port 20, port 21
and port 22, and port 23 and port 24).
For example, to combine ports 8 and 17 on UHP leaf 111 in a 12800-180 switch:
1. Log into the switch CLI with the login
admin
and password
adminpass
.
Figure 53.
12800-180 Leaf Module 8x DUOs
