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Connectivity Guide

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Table Of Contents
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 387, Received: 16
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID
PortID
--------------------------------------------------------------------------------------------------
-VFP(VirtualFabricPort) 0.1 0 1 FWD 0 32768
3417.ebf2.a8c4 0.1
VLT-LAG -1(vlt-portid-1) of MSTI 0 is in Designated Forwarding
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: 1234, Received: 123
Virtual
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID
PortID
--------------------------------------------------------------------------------------------------
-
VLT-LAG -1(vlt-portid1) 128.2001 128 2000000 FWD 0 32768
90b1.1cf4.a523 128.2001
The following example shows MSTP information on VLT in detail:
OS10# show spanning-tree virtual-interface detail
Port 1 (VFP(VirtualFabricPort)) of MSTI 0 is designated Forwarding
Port path cost 0, Port priority 128, Port Identifier 128.1
Designated root priority: 32768, address: 34:17:44:55:66:7f
Designated bridge priority: 32768, address: 90:b1:1c:f4:a5:23
Designated port ID: 128.1, designated path cost: 0
Number of transitions to forwarding state: 1
Edge port: No (default)
Link Type: Point-to-Point
BPDU Sent: 2714, Received: 1234
Port 2001 (VLT-LAG -1(vlt-portid-1)) of MSTI 0 is designated Forwarding
Port path cost 200000, Port priority 128, Port Identifier 128.2001
Designated root priority: 32768, address: 34:17:44:55:66:7f
Designated bridge priority: 32768, address: 90:b1:1c:f4:a5:23
Designated port ID: 128.2001, designated path cost: 0
Number of transitions to forwarding state: 1
Edge port: No (default)
Link Type: Point-to-Point
BPDU Sent: 2714, Received: 1234
RSTP configuration
RSTP prevents loops during the VLT startup phase. If required, configure RSTP in the network, before you configure VLT on
peer switches.
● Enable RSTP on each peer node in CONFIGURATION mode.
spanning-tree mode rstp
Configure RSTP — peer 1
OS10(config)# spanning-tree mode rstp
Configure RSTP — peer 2
OS10(config)# spanning-tree mode rstp
View VLT-specific STP information
OS10# show spanning-tree virtual-interface
VFP(VirtualFabricPort) of RSTP 1 is Designated Forwarding
Virtual Link Trunking
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