API Guide

Name PortID Prio Cost Sts Cost Bridge ID
PortID
-----------------------------------------------------------------------------------------
----
ethernet1/1/7 128.56 128 500 FWD 500 32769 90b1.1cf4.a625
128.56
Recover from BPDU guard violations
1. When there is BPDU guard violation on a port, OS10 either shuts down the port or moves it to BLOCKED state. Use the
following command in CONFIGURATION mode to shutdown the port. The no version of the command moves the port to
BLOCKED state.
errdisable detect cause bpduguard
2. In CONFIGURATION mode, use the following command to recover the ports from shutting down due to the detection of a
BPDU Guard violation. When the recovery option is enabled, the port is brought up after the recovery timer expires. The
default recovery timer value is 300 seconds. When the recovery option is disabled, the port remains shut down indefinitely.
You must manually bring up the port using the shutdown and no shutdown commands.
errdisable recovery cause bpduguard
The no version of the command disables the recovery option.
3. To change the recover timer value, use the following command in CONFIGURATION mode. This recovery timer value is
applicable only for shutdown case. For Blocking case, the default value of 300 seconds is used.
errdisable recovery interval interval-value
Example configuration
OS10(config)# errdisable detect cause bpduguard
OS10(config)# errdisable recovery interval 45
OS10(config)# errdisable recovery cause bpduguard
View detect and recovery details
OS10# show errdisable detect
Error-Disable Cause Detect Status
-----------------------------------------------
bpduguard Enabled
OS10# show errdisable recovery
Error-Disable Recovery Timer Interval: 300 seconds
Error-Disable Reason Recovery Status
---------------------------------------------------
bpduguard Enabled
Recovery Time left
Interface Errdisable Cause (seconds)
---------------------------------------------------------------------
ethernet 1/1/1:1 bpduguard 273
ethernet 1/1/2 bpduguard 4
port-channel 12 bpduguard 45
MAC flush optimization
OS10 offers a MAC address clearing technique that optimizes the number of MAC flush calls sent by the Spanning Tree Protocol
(STP) module.
If the number of calls sent to the hardware is too high, traffic is dropped or flooded impacting system performance. To prevent
traffic drops and flooding, you can use the MAC flush optimization feature.
Layer 2
469