Cisco Catalyst 3560-X Command Reference Manual page 792

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Catalyst 3750-X and 3560-X Switch Command Reference
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Table 2-49 show switch stack-ports summary Command Output
Field
Switch#/Port#
Stack Port Status
Neighbor
Cable Length
Link OK
Link Active
Sync OK
# Changes to LinkOK
In Loopback
This example shows how to display detailed stack-ring activity information for a switch stack:
Switch> show switch stack-ring activity detail
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Chapter 2 Catalyst 3750-X and 3560-X Cisco IOS Commands
Description
Member number and its stack port number.
• Absent—No cable is detected on the stack
port.
• Down—A cable is detected, but either no
connected neighbor is up, or the stack port is
disabled.
OK—A cable is detected, and the connected
•
neighbor is up.
Switch number of the active member at the other
end of the stack cable.
Valid lengths are 50 cm, 1 m, or 3 m.
If the switch cannot detect the cable length, the
value is no cable. The cable might not be
connected, or the link might be unreliable.
This shows if the link is stable.
The link partner is a stack port on a neighbor
switch.
No—The link partner receives invalid
•
protocol messages from the port.
Yes—The link partner receives valid protocol
•
messages from the port.
This shows if the stack port is in the same state as
its link partner.
• No—The port cannot send traffic to the link
partner.
• Yes—The port can send traffic to the link
partner.
No—The link partner does not send valid
•
protocol messages to the stack port.
Yes—The link partner sends valid protocol
•
messages to the port.
This shows the relative stability of the link.
If a large number of changes occur in a short
period of time, link flapping can occur.
No— At least one stack port on the member
•
has an attached stack cable.
Yes—None of the stack ports on the member
•
has an attached stack cable.
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