Tag Archives: prevent loop

Configuring PVST+ on Cisco Switches

Posted on February 1, 2012 by Humair

Per VLAN Spanning Tree Plus (PVST+) is a flavor of Spanning Tree Protocol (see prior blog, Default STP Behavior on Cisco Switches) which maintains a spanning tree instance for each VLAN in the network. This means certain VLAN trunks (using … Continue reading →

Posted in Cisco, Labs, Networking, Protocols, Technology | Tagged avoid loop, Cisco, Cisco 3560, Cisco 3560 switch, Cisco switch, dot1q, loop, Per VLAN Spanning Tree Plus, prevent loop, PVST+, Spanning Tree Protocol, STP, switch, vlan | 6 Comments

Default STP Behavior on Cisco Switches

Posted on January 31, 2012 by Humair

In a prior blog, Functionality of Layer 2 Switches/Bridges, I discussed the core functionality of layer 2 switches. In this blog, I hit upon the Spanning Tree Protocol (STP) used on layer 2 switches to prevent loops. As mentioned before, … Continue reading →

Posted in Cisco, Labs, Networking, Protocols, Technology | Tagged Blocking, BPDUs, bridge ID, Bridge Protocol Data Units, broadcast storm, change root bridge, Cisco, Cisco 3560, designated port, device priority, Disabled, Forwarding, layer 2, layer 2 loop, Learning, Listening, loop, MAC address, prevent layer 2 loop, prevent loop, redundancy, root bridge, root port, Spanning Tree Protocol, STP | 1 Comment

Tag Archives: prevent loop

Configuring PVST+ on Cisco Switches

Default STP Behavior on Cisco Switches

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