Root Guard Configuration; Snmp Traps For Root Elections And Topology Changes - Dell Force10 S4810P Configuration Manual

Root Guard Configuration

You enable STP root guard on a per-port or per-port-channel basis.
FTOS Behavior: The following conditions apply to a port enabled with STP root guard:
• Root guard is supported on any STP-enabled port or port-channel interface except when used as a stacking port.
• Root guard is supported on a port in any Spanning Tree mode:
• Spanning Tree Protocol (STP)
• Rapid Spanning Tree Protocol (RSTP)
• Multiple Spanning Tree Protocol (MSTP)
• Per-VLAN Spanning Tree Plus (PVST+)
• When enabled on a port, root guard applies to all VLANs configured on the port.
• Root guard and loop guard cannot be enabled at the same time on an STP port. For example, if you configure root guard on
a port on which loop guard is already configured, the following error message is displayed:
• % Error: LoopGuard is configured. Cannot configure RootGuard.
• When used in an MSTP network, if root guard blocks a boundary port in the CIST , the port is also blocked in all other MST
instances.
To enable the root guard on an STP-enabled port or port-channel interface in instance 0, enter the
spanning-tree 0 rootguard
Task
Enable root guard on a port or port-channel interface.
0 Enables root guard on an STP-enabled port assigned to
:
instance 0.
mstp Enables root guard on an MSTP-enabled port.
:
rstp Enables root guard on an RSTP-enabled port.
:
pvst Enables root guard on a PVST-enabled port.
:
To disable STP root guard on a port or port-channel interface, enter the
command in an interface configuration mode.
To verify the STP root guard configuration on a port or port-channel interface, enter the
spanning-tree 0 guard

SNMP Traps for Root Elections and Topology Changes

• Enable SNMP traps for Spanning Tree state changes using the command
• Enable SNMP traps for RSTP, MSTP, and PVST+ collectively using the command
traps xstp
1016
| Spanning Tree Protocol (STP)
command:
[ interface
interface]
.
Command Syntax
{
spanning-tree 0
}
pvst rootguard
command in global configuration mode.
Command Mode
| | | INTERFACE
mstp rstp
INTERFACE
PORT-CHANNEL
no spanning-tree 0 rootguard
show
snmp-server enable traps stp
snmp-server enable
.