Protocols And Standards; Spanning Tree Configuration Task Lists; Configuration Prerequisites; Configuration Restrictions And Guidelines - HP 6600 Configuration Manual

Root bridge hold
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• Root bridge backup
Root guard
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BPDU guard
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• Loop guard
TC-BPDU guard
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Support for hot swapping of interface cards and active/standby changeover
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Protocols and standards

IEEE 802.1d, Media Access Control (MAC) Bridges
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IEEE 802.1w, Part 3: Media Access Control (MAC) Bridges—Amendment 2: Rapid Reconfiguration
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• IEEE 802.1s, Virtual Bridged Local Area Networks—Amendment 3: Multiple Spanning Trees

Spanning tree configuration task lists

Configuration prerequisites

Before configuring a spanning tree, you must determine the spanning tree protocol to be used (STP, RSTP,
or MSTP) and plan device roles (the root bridge or leaf node).

Configuration restrictions and guidelines

• If GVRP and a spanning tree protocol are enabled on a device at the same time, GVRP packets are
forwarded along the CIST. To advertise a certain VLAN within the network through GVRP, make
sure that this VLAN is mapped to the CIST when you configure the VLAN-to-instance mapping table.
For more information about GVRP, see "Configuring GVRP."
The spanning tree configurations are mutually exclusive with any of the following functions on a port:
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service loopback, RRPP, Smart Link, and BPDU tunneling.
The spanning tree configurations made in system view take effect globally. Configurations made in
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Ethernet interface view take effect on the interface only. Configurations made in port group view
take effect on all member ports in the port group. Configurations made in Layer 2 aggregate
interface view take effect only on the aggregate interface. Configurations made on an aggregation
member port can take effect only after the port is removed from the aggregation group.
After you enable a spanning tree protocol on a Layer 2 aggregate interface, the system performs
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spanning tree calculation on the Layer 2 aggregate interface but not on the aggregation member
ports. The spanning tree protocol enable state and forwarding state of each selected member port
is consistent with those of the corresponding Layer 2 aggregate interface.
Though the member ports of an aggregation group do not participate in spanning tree calculation,
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the ports still reserve their spanning tree configurations for participating in spanning tree
calculation after leaving the aggregation group.
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