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Enhancements in Release F.02.11
Fast-Uplink Spanning Tree Protocol (STP)
In figure 75:
• Port 1 and Trk1 (trunk 1; formed from ports 2 and 3) are redundant fast-uplink STP links,
with trunk 1 forwarding (the active link) and port 1 blocking (the backup link). (To view
the configuration for port 1 and Trk1, see figure 73 on page 155.)
• If the link provided by trunk 1 fails (on both ports), then port 1 begins forwarding in fast-
uplink STP mode.
• Ports 5, 6, and 12 are connected to end nodes and do not form redundant links.
CLI: Viewing and Configuring Fast-Uplink STP
Using the CLI to View Fast-Uplink STP. You can view fast-uplink STP using the same show
commands that you would use for standard STP operation:
Syntax: show spanning-tree Lists STP status.
show spanning-tree config Lists STP configuration for the switch and for individual
ports.
For example, figures 76 and 77 illustrate a possible topology, STP status listing, and STP configuration
for a Series 2500 switch with:
■ STP enabled and the switch operating as an Edge switch
■ Port 1 and trunk 1 (Trk1) configured for fast-uplink STP operation
■ Several other ports connected to PC or workstation end nodes
Figure 76. Example Topology for the Listing Shown in Figure 77
HP 2512
Operating
as an Edge
Switch
Interior
Switch with
STP Enabled
STP Root
Device
Port
Trunk
STP
Block
LAN