2–48
edge switch 2/24 service manual
Diagnostics
10
Verify the hubs are correctly daisy-chained (
Figure 2–11
.)
Figure 2–11: Ethernet Hubs, daisy-chained
To check two hubs, use
step a
and
step b
(top and middle hub instructions only).
a. At the first (top) Ethernet hub, ensure an RJ-45 Ethernet patch cable connects to
port 24 and the medium-dependent interface (MDI) switch is set to MDIX (in).
b. At the middle Ethernet hub, ensure the patch cable from the top hub connects to
port 12x, the patch cable from the bottom hub connects to port 23x, and the MDI
switch is set to MDI (out).
c. At the bottom Ethernet hub, ensure the patch cable from the middle hub connects
to port 24 and the MDI switch is set to MDIX (in).
Was a corrective action performed?
NO
YES
↓
Go to
step 1
.
MDIX
MDI
MDIX
MDI
MDIX
MDI
Switch set to
MDI (out)
Switch set to
MDIX (in)
Switch set to
MDIX (in)
12x
24
12x
24
12x
24