Displaying Information on Stack Connections

You can check the data connections between stack units with the show stack connection command.

When the show stack connection command output includes the message *** error: one-way, this may indicate a stack port to non-stack-port connection. When this occurs, the side of the connection that is incorrectly configured as a stack port must be converted to a data port.

In the following example, the show stack connection command output indicates that CPU-to-CPU connections are working properly between all members of the stack.

ICX7850-48FS Router# show stack connection
Probing the topology. Please wait ...

    active       standby
     +---+        +---+        +---+        +---+
 -2/5| 1 |2/1==2/5| 2 |2/1--2/1| 3 |2/5--2/1| 4 |2/5-
 |   +---+        +---+        +---+        +---+   |
 |                                                  |
 |--------------------------------------------------|

probe results: 4 links, P0/1: stk-port dir 0/1, T0/1: stack-trunk dir 0/1

Link 1: u1 -- u2, num=4
  1: 1/2/1 (T0) <---> 2/2/5 (T1)
  2: 1/2/2 (T0) <---> 2/2/6 (T1)
  3: 1/2/3 (T0) <---> 2/2/7 (T1)
  4: 1/2/4 (T0) <---> 2/2/8 (T1)
Link 2: u1 -- u4, num=1
  1: 1/2/5 (P1) <---> 4/2/5 (P1)
Link 3: u2 -- u3, num=1
  1: 2/2/1 (P0) <---> 3/2/1 (P0)
Link 4: u3 -- u4, num=1
  1: 3/2/5 (P1) <---> 4/2/1 (P0)
CPU to CPU packets are fine between 4 units.