Configure VLT between two Dell S4128T-on or S4128F-on switches
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Configure VLT between two Dell S4128T-on or S4128F-on switches
To configure VLT between two Dell S4128T-on switches use following steps:
- Connect to switch using console
- Configure management IP on OOBE management interfaces (eg 1.1.1.1 and 1.1.1.2) in below example
- Configure management IP on first switch
- interface mgmt1/1/1
- no shutdown
- no ip address dhcp
- ip address 1.1.1.1/30
- ipv6 address autoconfig
- Configure management IP on second switch
- interface mgmt1/1/1
- no shutdown
- no ip address dhcp
- ip address 1.1.1.2/30
- ipv6 address autoconfig
- Configure management IP on first switch
- Ensure back to back management connectivity between two switches. After that if you are connected to console of first switch, you can get access to second switch via:
- system bash
- ssh admin@10.1.1.2
- Assuming we will use interfaces 25 and 26 on both switches for VLT. Configure all the four interfaces (25,26 on switch1 and 25,26 on switch 2) as:
- interface ethernet1/1/25
- description VLTi
- no shutdown
- no switchport
- flowcontrol receive on
- Configure VLT on first switch using interfaces 25 and 26 using:
- vlt-domain 1
- backup destination 1.1.1.2
- discovery-interface ethernet1/1/25-1/1/26
- peer-routing
- primary-priority 1
- Configure VLT on second switch using interfaces 25 and 26 using:
- vlt-domain 1
- backup destination 1.1.1.1
- discovery-interface ethernet1/1/25-1/1/26
- peer-routing
- primary-priority 2
- After this the VLT status should be up which can be validated with
- show vlt 1
- Example output
- Domain ID : 1
- Unit ID : 1
- Role : primary
- Version : 3.1
- Local System MAC address : f0:d4:e2:5f:f4:0f
- Role priority : 1
- VLT MAC address : f0:d4:e2:5f:f4:0f
- IP address : fda5:74c8:b79e:1::1
- Delay-Restore timer : 90 seconds
- Peer-Routing : Enabled
- Peer-Routing-Timeout timer : 0 seconds
- Multicast peer-routing timer : 300 seconds
- VLTi Link Status
- port-channel1000 : up
- VLT Peer Unit ID System MAC Address Status IP Address Version
- ----------------------------------------------------------------------------------
- 2 f0:d4:e2:5f:da:0f up fda5:74c8:b79e:1::2 3.1
- You can check whether back-to-back management connectivity is working properly or not using:
- show vlt 1 backup-link
- Example output
- VLT Backup Link
- ------------------------
- Destination : 1.1.1.2
- Peer Heartbeat status : Up
- Heartbeat interval : 30
- Heartbeat timeout : 90
- Destination VRF : default
- Finally you can check VLT configuration is done properly or not using:
- show vlt 1 mismatch
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