Software Loopback Example: No Connected Stack Cable; Software Loopback Examples: Connected Stack Cables - Cisco Catalyst 2975 Software Configuration Manual
Ios release 12.2(55)se
Hide thumbs
Also See for Catalyst 2975:
- Hardware installation manual (62 pages) ,
- Brochure (19 pages) ,
- Getting started manual (17 pages)
Table of Contents
Advertisement
Troubleshooting Stacks
If you disconnect the stack cable from Port 2 on Switch 1, the stack splits.
Switch 2 and Switch 3 are now in a two-member stack connected through stack cables.
Switch# show sw stack-ports summary
Switch#/
Port#
--------
2/1
2/2
3/1
3/2
Switch 1 is a standalone switch.
Switch# show switch stack-ports summary
Switch#/
Port#
--------
1/1
1/2
Software Loopback Example: No Connected Stack Cable
Catalyst 2975 switch port status:
Switch# show switch stack-ports summary
Switch#/
Port#
--------
1/1
1/2
Software Loopback Examples: Connected Stack Cables
•
•
Catalyst 2975 Switch Software Configuration Guide
6-26
Stack
Neighbor
Port
Status
------
--------
Down
None
OK
3
OK
2
Down
None
Stack
Neighbor
Port
Status
------
--------
Absent
None
Absent
None
Stack
Neighbor
Port
Status
------
--------
Absent
None
Absent
None
On Port 1 on Switch 1, the port status is Down, and a cable is connected.
On Port 2 on Switch 1, the port status is Absent, and no cable is connected.
Switch# show switch stack-ports summary
Switch#/
Stack
Neighbor
Port#
Port
Status
--------
------
--------
1/1
Down
None
1/2
Absent
None
In a physical loopback, a cable connects both stack ports on a switch. You can use this configuration
to test
Cables on a switch that is running properly
–
Stack ports with a cable that works properly
–
Switch# show switch stack-ports summary
Switch#/
Stack
Neighbor
Port#
Port
Status
--------
------
--------
2/1
OK
2
2/2
OK
2
Cable
Link
Link
Length
OK
Active
--------
----
------
3 m
No
No
50 cm
Yes
Yes
50 cm
Yes
Yes
50 cm
No
No
Cable
Link
Link
Length
OK
Active
--------
----
------
No cable
No
No
No cable
No
No
Cable
Link
Link
Length
OK
Active
--------
----
------
No cable
Yes
No
No cable
Yes
No
Cable
Link
Link
Length
OK
Active
--------
---- ------
50 Cm
No
No
No cable
No
No
Cable
Link
Link
Length
OK
Active
--------
----
------
50 cm
Yes
Yes
50 cm
Yes
Yes
Chapter 6
Managing Switch Stacks
Sync
#
In
OK
Changes
Loopback
To LinkOK
----
---------
--------
No
1
No
Yes
1
No
Yes
1
No
No
1
No
Sync
#
In
OK
Changes
Loopback
To LinkOK
----
---------
--------
No
1
Yes
No
1
Yes
Sync
#
In
OK
Changes
Loopback
To LinkOK
----
---------
--------
Yes
1
Yes
Yes
1
Yes
Sync
#
OK
Changes
Loopback
To LinkOK
----
---------
--------
No
1
No
1
Sync
#
OK
Changes
Loopback
To LinkOK
----
---------
--------
Yes
1
Yes
1
In
No
No
In
No
No
OL-19720-02
- Quick Links:
- Management Options
Hide quick links:
Advertisement
Chapters
Table of Contents
Troubleshooting
