Checking Whether a Stack Has Been Established Through Stack Card Connections
After you complete stack configurations, review indicators to check whether the stack has been established successfully. If the stack has been successfully established, log in to the stack and run commands to confirm that the stack topology matches the hardware connections. If a stack has not been established, log in to the stack (multiple independent switches) and run commands to locate and resolve the issues.
Reviewing Indicators to Check Whether a Stack Has Been Established
Context
After you complete configurations for establishing a stack, you can review indicators on the switch panels to check whether the stack has been established successfully.
Procedure
Press the mode switching button on any member switch to set the mode status indicator to work in stack mode. A switch has a STCK indicator, which indicates the stack mode status. After you press the MODE button, the indicator is steady green or blinking and off in 45 seconds, indicating that the switch has entered the stack mode.
- If the mode status indicators on all the member switches change to the stack mode, the stack has been established successfully. You can determine the stack IDs of the master switch and member switches by viewing the mode status indicators and service port indicators. For details, see Table 3-38.
- If the mode status indicators on some member switches do not change to the stack mode, the stack has not been established.
Color |
Status and Meaning |
|---|---|
Off |
This indicator does not indicate the stack ID of a stack member. |
Green |
|
Logging In to the Stack to Check Whether a Stack Has Been Established
Context
After checking whether a stack has been established based on indicators, you can log in to the stack and run commands to check whether the stack topology is the same as the hardware connections or to locate and rectify faults.
Procedure
Log in to the stack. For details, see Stack Login.
Check whether the stack has been established successfully.
Run the display device command to check whether the number of member switches in the stack is the same as the number of switches in the networking.<HUAWEI> display device S5720-32X-EI-AC's Device status: Slot Sub Type Online Power Register Status Role ------------------------------------------------------------------------------- 0 - S5720-32X-EI Present PowerOn Registered Normal Master 1 - S5720-32X-EI Present PowerOn Registered Normal Standby
- If they are the same, go to step 3.
- If they are different, see Rectifying Common Stack Faults.
Check whether the stack topology is the same as the actual hardware connections.
# Run the display stack command to check whether the stack topology is the same as the actual hardware connections.<HUAWEI> display stack Stack mode: Service-port Stack topology type: Link Stack system MAC: 0200-0000-01ab MAC switch delay time: 10 min Stack reserved vlan: 4093 Slot of the active management port: 0 Slot Role Mac address Priority Device type ------------------------------------------------------------- 0 Master 0200-0000-01ab 255 S5720-32X-EI-AC 1 Standby 0200-0000-0000 200 S5720-32X-EI-AC
# Run the display stack peers command to check whether neighboring information about the stack is the same as the actual hardware connections.<HUAWEI> display stack peers Slot Port1 Peer1 Port2 Peer2 --------------------------------------------------------------------------- 0 STACK 1 1 STACK 2 None 1 STACK 1 None STACK 2 0- If they are the same, the stack has been established successfully.
- If they are different, reconnect the member switches.
- If the fault persists, rectify the fault according to Rectifying Common Stack Faults.
Rectifying Common Stack Faults
Common Causes
- Switches of different models cannot set up a stack.
- A switch has no electronic label or an incorrect electronic label.
- A stack card has no electronic label or an incorrect electronic label.
- Stack ports are incorrectly connected.
- Some stack cables or stack cards are faulty.
- The stack reserved VLAN is occupied.
- The MAC addresses of member switches conflict with each other.
Procedure
Check the switch model.
Run the display device command to check the device model.
<HUAWEI> display device S5720-32X-EI-AC's Device status: Slot Sub Type Online Power Register Status Role ------------------------------------------------------------------------------- 0 - S5720-32X-EI Present PowerOn Registered Normal Master
- If switches of different models cannot set up a stack or a switch does not support the stacking function, replace the switch.
- If the switches support stacking, proceed to the next step.
Check that a correct electronic label has been loaded to the switch.
Run the display elabel command to view the electronic label.
<HUAWEI> display elabel Warning: It may take a long time to excute this command. Continue? [Y/N]:y Info: It is executing, please wait... /$[System Integration Version] /$SystemIntegrationVersion=3.0 [Slot_0] /$[Board Integration Version] /$BoardIntegrationVersion=3.0 [Main_Board] /$[ArchivesInfo Version] /$ArchivesInfoVersion=3.0 [Board Properties] BoardType=S5720-EI BarCode=210235958601xxxxxxxx Item=02359586 Description=S5720-32X-EI-AC(24 Ethernet 10/100/1000 ports,4 100/1000 SFP,4 10 Gig SFP+,AC 110/220V) Manufactured=2014-05-15 VendorName=Huawei IssueNumber=00 CLEICode= BOM=02359586
If all fields under [Board Properties] are empty, no electronic label has been loaded to the switch. Replace the switch.
If fields under [Board Properties] are not empty, an electronic label has been loaded to the switch. Proceed to the next step.
Check the electronic label of the stack card. This step is not required on a switch that uses stack card stacking with stack ports fixed on the rear panel.
Run the display elabel slot slot-id subcard-id command to check the electronic label of the stack card. slot-id indicates the stack ID and you can obtain it from the output of the display stack command. subcard-id indicates the subcard ID which is 1 in a stack. For example, to view the stack card electronic label on a switch with stack ID 0, run the display elabel slot 0 1 command.
<HUAWEI> display elabel slot 0 1 Warning: It may take a long time to excute this command. Continue? [Y/N]:y Info: It is executing, please wait... /$[System Integration Version] /$SystemIntegrationVersion=3.0 [Slot_0] /$[Board Integration Version] /$BoardIntegrationVersion=3.0 [Main_Board] /$[ArchivesInfo Version] /$ArchivesInfoVersion=3.0 [Board Properties] BoardType=S5720-EI BarCode=0302MDW Item= Description=Dedicated stack card with 2*QSFP+ interface(Including one PCS of 1M QSFP+ cable ,Used in S5720-EI series) Manufactured=2014-07-07 VendorName=Huawei IssueNumber=00 CLEICode= BOM=
If all fields under [Board Properties] are empty, the stack card is not functioning properly. Replace the stack card.
If fields under [Board Properties] are not empty, an electronic label has been loaded to the switch. Proceed to the next step.
Check the stack cables.
Run the display stack port [ brief | slot slot-id ] command to check whether stack cables are correctly connected.
<HUAWEI> display stack port slot 0 stack-port0/1: --------------------------------------------- Current state : UP Speed : 21000 Input: 231394 packets, 45889632 bytes Unicast: 231025, Multicast: 0 Broadcast: 0, Jumbo: 369 Discard: 0, Frames: 0 Total Error: 0 CRC: 0, Giants: 0 Jabbers: 0, Fragments: 0 Runts: 0, DropEvents: 0 Alignments: 0, Symbols: 0 Ignoreds: 0 Output: 247387 packets, 42114410 bytes Unicast: 246108, Multicast: 989 Broadcast: 0, Jumbo: 290 Discard: 0 Total Error: 0 Collisions: 0, ExcessiveCollisions: 0 Late Collisions: 0, Deferreds: 0 Buffers Purged: 0If the Current state of a stack port on the switch is UP, proceed to the next step.
If a stack port status is DOWN, check whether the switch connected to the port has been powered off or is restarting. If so, check whether the stack port status is Up after the connected switch restarts. If not, replace the stack cable.
If the fault persists, proceed to the next step.
Check whether the stack reserved VLAN is occupied.
Run the display stack command to check the reserved VLAN of a member switch. By default, the reserved VLAN is 4093.
Run the display vlan vlan-id command. If the reserved VLAN is not occupied, proceed to the next step.
<HUAWEI> display vlan 4093 Error: The VLAN does not exist.If the reserved VLAN is occupied, run either of the following commands to rectify the fault:
- Run the stack reserved-vlan vlan-id command in the system view to modify the reserved VLAN.
- Delete services in the reserved VLAN and run the undo vlan vlan-id command in the system view to delete the VLAN.
If the fault persists, proceed to the next step.
Check whether MAC addresses of member switches conflict with each other.
Run the display stack command to check whether the MAC address of the switch to be added to the stack conflicts with the MAC address of an existing member switch. If not, proceed to the next step.
<HUAWEI> display stack Stack mode: Service-port Stack topology type: Link Stack system MAC: 0200-0000-01ab MAC switch delay time: 10 min Stack reserved vlan: 4093 Slot of the active management port: 0 Slot Role Mac address Priority Device type ------------------------------------------------------------- 0 Master 0200-0000-01ab 255 S5720-32X-EI-AC 1 Standby 0200-0000-0000 200 S5720-32X-EI-AC
- Collect the following information and contact technical support personnel.
- Results of the preceding troubleshooting procedure
- Configuration file, logs, and alarms of switches
- A stack port goes Up: FSP_1.3.6.1.4.1.2011.5.25.183.1.22.1 hwStackLinkUp
- A stack port goes Down: FSP_1.3.6.1.4.1.2011.5.25.183.1.22.2 hwStackLinkDown
- A switch has joined the stack: FSP_1.3.6.1.4.1.2011.5.25.183.1.22.6 hwStackStackMemberAdd
- A switch has left the stack: FSP_1.3.6.1.4.1.2011.5.25.183.1.22.7 hwStackStackMemberLeave