Root Guard Configuration; Snmp Traps For Root Elections And Topology Changes - Dell Force10 MXL Blade 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:
•
•
•
•
To enable the root guard on an STP-enabled port or port-channel interface in instance 0, use 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, use the
in INTERFACE Configuration mode.
To verify the STP root guard configuration on a port or port-channel interface, use the
guard [interface interface]

SNMP Traps for Root Elections and Topology Changes

To enable SNMP traps for STP state changes, use the
To enable SNMP traps for RSTP, MSTP, and PVST+ collectively, use the
command.
592
| Spanning Tree Protocol (STP)
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
• Multiple Spanning Tree Protocol
• Per-VLAN Spanning Tree Plus
When enabled on a port, root guard applies to all VLANs configured on the port.
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.
command.
command in Global Configuration mode.
(STP)
(RSTP)
(MSTP)
(PVST+)
Command Syntax
spanning-tree {0 | mstp | rstp | pvst}
rootguard
snmp-server enable traps stp
Command Mode
INTERFACE
INTERFACE
PORT-CHANNEL
no spanning-tree 0 rootguard
show spanning-tree 0
command.
snmp-server enable traps xstp
command