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Configuration Menu 146
Table 113 Bridge Spanning Tree Configuration Menu options
Command Description
fwd <4-30>
Configures the bridge forward delay parameter. The forward delay parameter
specifies the amount of time that a bridge port has to wait before it changes from the
listening state to the learning state and from the learning state to the forwarding state.
The range is 4 to 30 seconds, and the default is 15 seconds.
This command does not apply to MSTP. See the “Common Internal Spanning Tree
configuration” section for more information.
cur
Displays the current bridge STP parameters.
When configuring STP bridge parameters, the following formulas must be used:
• 2*(fwd-1) ≥ mxage
• 2*(hello+1) ≤ mxage
Spanning Tree port configuration
Command: /cfg/l2/stp <1-128>/port <port number>
[Spanning Tree Port 1 Menu]
prior - Set port Priority (0-255)
cost - Set port Path Cost (1-65535 (802.1d) /
1-200000000 (MSTP/RSTP)/0 for auto)
link - Set port link type (auto, p2p, or shared; default: auto)
edge - Enables or disables this port as an edge port
fastfwd - Enable/disable Port Fast Forwarding mode
on - Turn port's Spanning Tree ON
off - Turn port's Spanning Tree OFF
cur - Display current port Spanning Tree parameters
The default configuration for STP/PVST+ is off for downlink ports (1-16) and the management port
(17), and on for uplink ports (18-21). The default configuration for RSTP/MSTP is Spanning Tree off
for all downlink ports (1-16) and the management port (17), and on for all uplink ports (18-21), with
downlink ports configured as edge ports.
Spanning tree port parameters are used to modify STP operation on an individual port basis. STP port
parameters include:
• Port priority
• Port path cost