[f-nsp] Brocade FCX Stack Issue

[salman sadiq]

Dear Team,
         We have around 300 FCX HPOE switches in a campus network. All of
them are stacks. After upgrading to 7.4f we have seen a lot of stack sync
issues. The standby unit in all the cases seems to be the source of the
problem. Rebooting the stack causes the standby unit to go unresponsive
unless the unit is hard rebooted. The show stack connection command shows
the following.

sh stack connection

Probing the topology. Please wait ...

telnet at SW1-XXX#

    active       standby

     +---+        +---+

 -2/1| 1 |2/2--2/1| 2 |2/2-

 |   +---+        +---+   |

 |                        |

 |------------------------|





**** Error! there should be 2 links, but 0.*

**** Error! no CPU to CPU:  u1 -x- u2,*

>From another switch

    active                    standby
     +---+        +---+        +---+        +---+        +---+        +---+
 -2/1| 1 |2/2--2/1| 2 |2/2--2/1| 3 |2/2--2/1| 4 |2/2--2/1| 5 |2/2--2/1| 6
|2/2-
 |   +---+        +---+        +---+        +---+        +---+
+---+   |
 |
|
 |
|
 |
+---+   |
 ------------------------------------------------------------------2/2| 7
|2/1-
                                                                      +---+

*** Error! should have 7 links, but 5: missing u2-u3, u3-u4, .
Link 1: u7 -- u1, num=1
  1: 1/2/1 (P0) <---> 7/2/2 (P1)
Link 2: u2 -- u1, num=1
  1: 1/2/2 (P1) <---> 2/2/1 (P0)
Link 3: u5 -- u4, num=1
  1: 4/2/2 (P1) <---> 5/2/1 (P0)
Link 4: u6 -- u5, num=1
  1: 5/2/2 (P1) <---> 6/2/1 (P0)
Link 5: u7 -- u6, num=1
  1: 6/2/2 (P1) <---> 7/2/1 (P0)
*** Error! no CPU to CPU:  u1 -x- u3,
*** Error! no CPU to CPU:  u2 -x- u3,
*** Error! no CPU to CPU:  u3 -x- u4,
*** Error! no CPU to CPU:  u3 -x- u5,
*** Error! no CPU to CPU:  u3 -x- u6,
*** Error! no CPU to CPU:  u3 -x- u7,


Anyone has seen this before? I'm working with the TAC but they seem to be
clueless as of now.

BR
Salman
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/foundry-nsp/attachments/20140605/ada94b6a/attachment-0001.html>