The steps in this article are applicable to switches running OS10 that support Virtual Link Trunking. This article does not contain the requirements for VLT, such as running the same software version. It is recommended to verify the requirements for VLT before implementing these steps.
For OS9 configuration, see How to set up Virtual Link Trunking (VLT) on Dell Networking OS9 Force10 Switches.
Spanning tree is enabled by default and recommended to prevent loops in the VLT domain. Rapid per-vlan spanning-tree (RPVST) (default) and rapid spanning-tree protocol (RSTP) modes are supported on VLT ports.
OS10# configure terminal OS10(config)# spanning-tree mode rstp [or] rapid-pvst
OS10# configure terminal |
Enter configuration mode. |
OS10(config)# interface range ethernet 1/1/1-1/1/2 |
Enter interface configuration mode |
OS10(conf-range-eth1/1/1-1/1/2)# no switchport |
Remove switchport from the VLTi ports. |
OS10(config)# vlt-domain 1 |
Create a VLT domain by configuring the same domain ID on each peer. |
OS10(conf-vlt-1)# discovery-interface ethernet 1/1/1 |
Set the VLTi interfaces. |
OS10(conf-vlt-1)# discovery-interface ethernet 1/1/2 |
Set the VLTi interfaces. |
OS10# configure terminal |
Enter configuration mode. |
OS10(config)# vlt-domain 1 |
Enter VLT domain configuration mode. |
OS10(conf-vlt-1)# primary-priority 4096 (primary peer) OS10(conf-vlt-1)# primary-priority 8192 (secondary peer) |
Specify the VLT priority for each peer switch. |
OS10(conf-vlt-1)# vlt-mac 00:11:22:33:44:55 |
Specify the VLT MAC address with a unique MAC address. |
OS10(conf-vlt-1)# backup destination 1.1.1.2 (primary peer) OS10(conf-vlt-1)# backup destination 1.1.1.1 (secondary peer) |
Specify the management IP address of the peer switch. This sets up the Heartbeat that monitors system up. |
OS10# configure terminal |
Enter configuration mode. |
OS10(config)# interface port-channel 5 |
Specify the LAG to the end device. Use the same LAG number on both peers. |
OS10(conf-if-po-5)# vlt-port-channel 5 |
Specify the LAG as VLT. |
OS10(conf-if-po-5)# exit |
Exit |
OS10(config)# interface ethernet 1/1/10 |
Enter interface configuration mode. |
OS10(conf-if-eth1/1/10)# channel-group 5 mode active |
Specify the LAG on the port. |
OS10# show vlt 1 vlt-port-detail VLT port channel ID : 5 VLT Unit ID Port-Channel Status Configured ports Active ports ---------------------------------------------------------------------------------- *1 port-channel5 up 1 1 2 port-channel5 up 1 1
OS10# show vlt 1 Domain ID : 1 Unit ID : 1 Role : primary Version : 1.0 Local System MAC address : 90:b1:1c:f4:xx:xx VLT MAC address : 00:11:22:33:44:55 IP address : fda5:74c8:xxxx:1::1 Delay-Restore timer : 1000 seconds Peer-Routing : Disabled Peer-Routing-Timeout timer : 0 seconds VLTi Link Status port-channel1000 : up VLT Peer Unit ID System MAC Address Status IP Address Version -------------------------------------------------------------------------- 2 90:b1:1c:f4:xx:xx up fda5:74c8:xxxx:1::2 1.0 OS10# show vlt 1 mismatch Peer-routing mismatch: No mismatch VLAN mismatch: No mismatch VLT VLAN mismatch: No mismatch OS10# show running-configuration vlt ! vlt domain 1 discovery-interface ethernet 1/1/1 discovery-interface ethernet 1/1/2 primary-priority 4096 vlt-mac 00:11:22:33:44:55 backup destination 1.1.1.2 ! interface port-channel 5 vlt-port-channel 5