Reference Guide

RPVST+ configuration
RPVST+ mode is supported on VLT ports. Before you configure VLT on peer switches, configure RPVST+ in the network. You
can use RPVST+ for initial loop prevention during the VLT startup phase.
Configure RPVST+ on both the VLT peers. This creates an RPVST+ instance for every VLAN configured in the system. The
RPVST+ instances in the primary VLT peer control the VLT LAGs on both the primary and secondary peers.
● Enable RPVST+ on each peer node in CONFIGURATION mode.
spanning-tree mode rapid-pvst
Configure RPVST+ — peer 1
OS10(config)# spanning-tree mode rapid-pvst
Configure RPVST+ — peer 2
OS10(config)# spanning-tree mode rapid-pvst
View RPVST+ information on VLT
OS10# show spanning-tree virtual-interface
VFP(VirtualFabricPort) of vlan 100 is Designated Blocking
Edge port: No (default)
Link type: point-to-point (auto)
Boundary: No, Bpdu-filter: Disable, Bpdu-Guard: Disable, Shutdown-on-Bpdu-Guard-
violation: No
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 7, Received: 9
Interface
Designated
Name PortID Prio Cost Sts Cost
Bridge ID PortID
-----------------------------------------------------------------------------------------
--------------------------
VFP(VirtualFabricPort) 0.1 0 1 BLK 0
4196 90b1.1cf4.a602 0.1
View RPVST+ information on VLT in detail
OS10# show spanning-tree virtual-interface detail
Port 1 (VFP(VirtualFabricPort)) of vlan1 is designated Forwarding
Port path cost 1, Port priority 0, Port Identifier 0.1
Designated root priority: 4097, address: 90:b1:1c:f4:a6:02
Designated bridge priority: 4097, address: 90:b1:1c:f4:a6:02
Designated port ID: 0.1, designated path cost: 0
Number of transitions to forwarding state: 1
Edge port: No (default)
Link Type: Point-to-Point
BPDU Sent: 202, Received: 42
Port 1 (VFP(VirtualFabricPort)) of vlan100 is designated Forwarding
Port path cost 1, Port priority 0, Port Identifier 0.1
Designated root priority: 4196, address: 90:b1:1c:f4:a6:02
Designated bridge priority: 4196, address: 90:b1:1c:f4:a6:02
Designated port ID: 0.1, designated path cost: 0
Number of transitions to forwarding state: 1
Edge port: No (default)
Link Type: Point-to-Point
BPDU Sent: 101, Received: 21
Create VLT domain
A VLT domain requires an ID number. Configure the same VLT domain ID on both peers, see VLT domain. The no vlt-domain
command disables VLT.
Virtual Link Trunking
681