Technical data

BLADE OS 5.0 Command Reference
BMD00142, November 2009 Chapter 6: The Configuration Menu
 231
When configuring STG bridge parameters, the following formulas must be used:
 2*(fwd-1) >
mxage
 2*(hello+1) <
mxage
/cfg/l2/stp <STP Group Index>/port <port alias or number>
Spanning Tree Port Configuration
By default, Spanning Tree is turned off for management ports, and turned on for data ports.
STG port parameters include:
 Port priority
 Port path cost
fwd <new bridge Forward Delay (4-30 secs)>
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 CIST on page 224).
cur
Displays the current bridge STG parameters.
Table 126 Spanning Tree Bridge Options
Command Syntax and Usage
[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)
(for RSTP only)
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