Spanning tree is enabled by default
and recommended to prevent loops in VLT domain. RPVST+ (default) and RSTP modes
are supported on VLT ports.
OS10# configure
terminal
OS10(config)# spanning-tree mode rstp [or] rapid-pvst
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.
|
The "VLT time interval" optional is not
covered in this article. Changing the VLT time interval is based on design
requirements. In certain environments, the timer may need to be increased to ensure
routing protocols come up before VLT converges to prevent possible outages.
|
OS10# configure terminal
|
Enter configuration mode.
|
|
OS10(config)# vlt-domain 1
|
Enter VLT domain configuration
mode.
|
|
|
|
|
|
|
|
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. |
Each VLT domain in the network must use a separate
unique mac address.
The following example uses ethernet 1/1/10 on both VLT peers, in a LACP Port-Channel, to connect to one end device.
|
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.
|
Verify the port channel is Up:
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:f4:99:93
VLT MAC address : 00:11:22:33:44:55
IP address : fda5:74c8:b79e: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:bc:0a up fda5:74c8:b79e: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
Delete startup configuration on first switch
Dell>enable
Dell#delete startup-config
Proceed to delete startup-config [confirm yes/no]yes
Dell#reload
System configuration has been modified. Save? [yes/no]no
Proceed with reload [confirm yes/no]yes
Configure stack on the first switch
Dell>enable
After the startup configuration is deleted, the factory default Enable
mode password is calvin.
Dell#configure
Dell(conf)#stack-unit 1 priority 1
Dell(conf)#stack-unit 1 stack-group 12
Dell(conf)#stack-unit 1 stack-group 13
Dell(conf)#exit
Dell#copy running-config startup-config
Dell#reload
Configure stack on the second switch
Dell>enable
Dell#stack-unit
1 renumber 2
Note: After confiming configuration change, the switch will need
to reboot.
Dell#configure
Dell(conf)#stack-unit
2 priority 1
Dell(conf)#stack-unit
2 stack-group 12
Dell(conf)#stack-unit
2 stack-group 13
Dell(conf)#exit
Dell#copy
running-config startup-config
Dell#reload
Verify stack configuration
From the first switch (Master) CLI, confirm that the stack has formed:
Dell#show redundancy
Dell#show boot system stack-unit all
