stacking issue

[wajid dabir]

my switch of  5 stack  has start behaving like this?

what is a problem?

Switch#  Port 1     Port 2           Port 1   Port 2

--------------------------------------------------------

  1        Ok         Ok              None     None

  2        Ok         Ok                1        3

  3        Ok         Ok                2        4

  4        Ok         Ok              None     None

  5        Ok         Ok                4      None

10ADCHUBSW1#show switch detail

Switch/Stack Mac Address : 5478.1ad4.0a80

                                           H/W   Current

Switch#  Role   Mac Address     Priority Version  State

----------------------------------------------------------

*1       Master 5478.1ad4.0a80     15     0       Ready

2       Member 5478.1a57.f900     13     0       Ready

3       Member 5478.1a57.f180     11     0       Ready

4       Member 5478.1a95.b780     9      0       Ready

5       Member 5478.1a95.b880     1      0       Ready

         Stack Port Status             Neighbors

Switch#  Port 1     Port 2           Port 1   Port 2

--------------------------------------------------------

  1        Ok         Ok                5        2

  2        Ok         Ok              None     None

  3       Down        Ok              None       4

  4        Ok         Ok              None     None

  5        Ok         Ok              None     None

10ADCHUBSW1#show switch detail

Switch/Stack Mac Address : 5478.1ad4.0a80

                                           H/W   Current

Switch#  Role   Mac Address     Priority Version  State

----------------------------------------------------------

*1       Master 5478.1ad4.0a80     15     0       Ready

2       Member 5478.1a57.f900     13     0       Ready

3       Member 5478.1a57.f180     11     0       Ready

4       Member 5478.1a95.b780     9      0       Ready

5       Member 5478.1a95.b880     1      0       Ready

         Stack Port Status             Neighbors

Switch#  Port 1     Port 2           Port 1   Port 2

--------------------------------------------------------

  1        Ok         Ok                5        2

  2        Ok         Ok              None     None

  3        Ok         Ok                2        4

  4        Ok         Ok              None     None

  5        Ok         Ok              None     None

#

IOS:

flash:/c3750-ipbasek9-mz.122-55.SE5

model:

WS-C3750V2-48PS-S

Kindly help me to sort out this,because my end host is affecting.

[Leo Laohoo]

Your stacking cables are either faulty or not s_crewed in properly.

If they are s_crewed in properly then start replacing them one by one with new ones.

Are all the switches in the stack "V2" models?  You don't have those 1.5RU models?

[Reza Sharifi]

Hi,

I agree with Leo.  Your stacking cables are most likely loose and that causes intermediate connection.

Some times, you even have to tighten them with screwdriver, if not they become loose and connectivity is lost.

HTH