Verifying a traditional stack configuration

Log in to the active controller and verify the stack information by entering the show running-config and show stack or show stack detail commands. If your stack is configured properly, you should see the following:

• One active controller, one standby controller, and stack members
• All stack members with a status of Ready

The following output shows a sample configuration of a traditional stack.

ICX7750-48C Router# show stack
T=11m47.4: alone: standalone, D: dynamic cfg, S: static
ID Type Role Mac Address Pri State Comment
1 S ICX7750-48XGC active cc4e.2439.1680 0 local Ready
2 D ICX7750-48XGC standby cc4e.2439.1a00 0 remote Ready
  active       standby
   +---+        +---+
2/1| 1 |2/4==2/4| 2 |2/1
   +---+        +---+
Standby u2 - protocols ready, can failover or manually switch over
Current stack management MAC is cc4e.2439.1680
ICX7750-48C Router#
ICX7750-48C Router# show run
Current configuration:
!
ver 08.0.30aT203
!
stack unit 1
module 1 icx7750-48-xgc-port-management-module
module 2 icx7750-qsfp-6port-qsfp-240g-module
stack-trunk 1/2/4 to 1/2/6
stack-port 1/2/1 1/2/4
stack unit 2
module 1 icx7750-48-xgc-port-management-module
module 2 icx7750-qsfp-6port-qsfp-240g-module
stack-trunk 2/2/4 to 2/2/6
stack-port 2/2/1 2/2/4
stack enable
stack mac cc4e.2439.1680
!!
ip dns domain-list englab.brocade.com
ip dns server-address 10.31.2.10
!!
hitless-failover enable
!!
interface management 1
ip address 10.21.242.124 255.255.255.128 dynamic
!!
end
ICX7750-48C Router#

The output from the show stack command contains a visual diagram of the stack. In the following example, the dashed line between ports 1/2/1 and 2/2/4 indicates that this stack is configured in a ring topology. The double dashed lines (equal signs) between all units indicate stack trunk connections. If a single dashed line were present, it would indicate a connection through a single stacking port.

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

If the link between ports 1/2/1 and 2/2/4 is lost, the stack topology changes to linear, and the diagram changes to resemble the following diagram.

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

For more detailed information, you can enter the show stack detail command. The following example shows detailed information for a three-unit stack connected in a ring topology. Two of the units are connected by stack trunks.

ICX7750-26Q Router# show stack detail
T=18m33.4: alone: standalone, D: dynamic cfg, S: static
ID   Type          Role    Mac Address    Pri State   Comment
1  S ICX7750-20QXG active  748e.f8f9.6300   0 local   Ready
2  D ICX7750-20QXG member  cc4e.2438.7280   0 remote  Ready
3  D ICX7750-20QXG standby cc4e.2438.7500   0 remote  Ready

    active       standby
     +---+        +---+        +---+
=2/1| 1 |2/4==2/1| 3 |2/4--2/1| 2 |2/4=
|   +---+        +---+        +---+   |
|                                     |
|-------------------------------------|
Will assign standby in 11 sec due to all ready

Standby u3 - protocols ready, can failover
Current stack management MAC is 748e.f8f9.6300

Image-Auto-Copy is Enabled.

      Stack Port Status                        Neighbors                        
Unit# Stack-port1         Stack-port2          Stack-port1         Stack-port2  
1     up (1/2/1-1/2/2)    up (1/2/4-1/2/6)     U2 (2/2/4-2/2/5)    U3 (3/2/1-3/2/3)
2     up (2/2/1)          up (2/2/4-2/2/5)     U3 (3/2/4)          U1 (1/2/1-1/2/2)
3     up (3/2/1-3/2/3)    up (3/2/4)           U1 (1/2/4-1/2/6)    U2 (2/2/1)   

Unit# System uptime
1     18 minute(s) 33 second(s)
2     17 minute(s) 30 second(s)
3     18 minute(s) 46 second(s)

To check the software version installed on each stack unit, enter the show version command. The software versions should match. If they do not match, refer to "Stack mismatches."

ICX7750-26Q Router# show version
  Copyright (c) 1996-2015 Brocade Communications Systems, Inc. All rights reserved.
    UNIT 1: compiled on Jul 31 2015 at 18:37:27 labeled as SWR08040b1
      (20197181 bytes) from Primary SWR08040b1.bin
        SW: Version 08.0.40b1T203
    UNIT 2: compiled on Jul 31 2015 at 18:37:27 labeled as SWR08040b1
      (20197181 bytes) from Primary SWR08040b1.bin
        SW: Version 08.0.40b1T203
    UNIT 3: compiled on Jul 31 2015 at 18:37:27 labeled as SWR08040b1
      (20197181 bytes) from Primary SWR08040b1.bin
        SW: Version 08.0.40b1T203
      Compressed Boot-Monitor Image size = 1835008, Version:10.1.01T205 (swz10101)
       Compiled on Fri Jun 27 22:01:35 2014