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Cisco Stack Diagram

Posted on 2012-03-12
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Is there any way I can map using the CLI and some mental math how a stack is physically connected?
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Question by:fluk3d
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by:Nayyar HH (CCIE RS)
ID: 37711472
The "show switch detail" user EXEC command show how the stack ports are connected between stack members

also "show switch stack-ports summary" is a good one

Switch# show switch stack-ports summary
Switch#/  Stack   Neighbor   Cable    Link   Link   Sync      #         In  
 Port#     Port              Length    OK   Active   OK    Changes   Loopback
          Status                                          To LinkOK          
--------  ------  --------  --------  ----  ------  ----  ---------  --------
  1/1     OK         3      50 cm     Yes    Yes    Yes        1        No
  1/2     OK         2      3 m       Yes    Yes    Yes        1        No
  2/1     OK         1      3 m       Yes    Yes    Yes        1        No
  2/2     OK         3      50 cm     Yes    Yes    Yes        1        No
  3/1     OK         2      50 cm     Yes    Yes    Yes        1        No
  3/2     OK         1      50 cm     Yes    Yes    Yes        1        No
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by:fluk3d
ID: 37712245
I found that command but how do I make the mental connection which cable goes to which switch? Can you give me a brief explanation?
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Nayyar HH (CCIE RS) earned 500 total points
ID: 37712291
Sure, the key is the bold items below- as you already know each stack member has two stack ports - Port 1 and Port 2

Consider the output below;

we have 2 switch in the stack 1 & 6

The first line is interpreted as:
     switch1:port1  connected to switch6
     switch1:port2  connected to none

The second line is interpreted as:
     switch6:port1  connected to none
     switch6:port2  connected to switch1





Switch> show switch detail
.
output suppressed
.
.
         Stack Port Status             Neighbors    
Switch#  Port 1     Port 2           Port 1   Port 2
--------------------------------------------------------
  1       Ok        Down             6        None
  6       Down      Ok               None       1
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