Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 1003
Reconfiguring Stacked Switches as VLT
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Description Unit ID mismatch Version ID mismatch VLT LAG ID is not configured on one VLT peer VLT LAG ID mismatch Behavior at Peer Up Behavior During Run Time Action to Take that the MAC address is the same on both units. The VLT peer does not boot up. The VLTi is forced to a down state. A syslog error message is generated. The VLT peer does not boot up. The VLTi is forced to a down state. A syslog error message is generated. Verify the unit ID is correct on both VLT peers. Unit ID numbers must be sequential on peer units; for example, if Peer 1 is unit ID "0", Peer 2 unit ID must be "1'. A syslog error message and an SNMP trap are generated. A syslog error message and an SNMP trap are generated. Verify the Dell Networking OS software versions on the VLT peers is compatible. For more information, refer to the Release Notes for this release. A syslog error message is generated. The peer with the VLT configured remains active. A syslog error message is generated. The peer with the VLT configured remains active. Verify the VLT LAG ID is configured correctly on both VLT peers. The VLT port channel is brought down. A syslog error message is generated. The VLT port channel is brought down. A syslog error message is generated. Perform a mismatch check after the VLT peer is established. Reconfiguring Stacked Switches as VLT To convert switches that have been stacked to VLT peers, use the following procedure. 1. Remove the current configuration from the switches. You will need to split the configuration up for each switch. 2. Copy the files to the flash memory of the appropriate switch. 3. Copy the files on the flash drive to the startup-config. 4. Reset the stacking ports to user ports for both switches. 5. Reload the stack and confirm the new configurations have been applied. 6. On the Secondary switch (stack-unit1), enter the command stack-unit1 renumber 0. 7. Confirm the reload query. 8. After reloading, confirm that VLT is enabled. 9. Confirm that the management ports are interconnected or connected to a switch that can transfer Heartbeat information. Virtual Link Trunking (VLT) 1003
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