Dell S3100 Command Line Reference Guide for the Series 9.100.1 - Page 1379

Example NOTE: A port configured as an edge port, on an RSTP switch, immediately transitions to the Forwarding state. Only configure ports connected to end-hosts as edge ports. Consider an edge port similar to a port with a spanning-tree portfast enabled. If you do not enable shutdown-on-violation, BPDUs are still sent to the RPM CPU. You cannot enable STP root guard and loop guard at the same time on a port. For example, if you configure loop guard on a port on which root guard is already configured, the following error message displays: % Error: RootGuard is configured. Cannot configure LoopGuard. Enabling Portfast BPDU guard and loop guard at the same time on a port results in a port that remains in a Blocking state and prevents traffic from flowing through it. For example, when Portfast BPDU guard and loop guard are both configured: • If a BPDU is received from a remote device, BPDU guard places the port in an Err-Disabled Blocking state and no traffic is forwarded on the port. • If no BPDU is received from a remote device, loop guard places the port in a Loop-Inconsistent Blocking state and no traffic is forwarded on the port. Dell(conf)# interface gigabitethernet 4/1 Dell(conf-if-gi-4/0)# spanning-tree rstp edge-port Dell(conf-if-gi-4/0)# show config ! interface GigabitEthernet 4/1 no ip address switchport spanning-tree rstp edge-port no shutdown Dell# tc-flush-standard Enable the MAC address flushing after receiving every topology change notification. Syntax tc-flush-standard To disable, use the no tc-flush-standard command. Defaults Disabled Command Modes CONFIGURATION (conf-rstp) Command History This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide. Version 9.10(0.0) 9.8(2.0) 9.8(1.0) 9.8(0.0P5) 9.8(0.0P2) 9.7(0.0) 9.2(1.0) 9.0.2.0 Description Introduced on the S3148. Introduced on the S3100 series. Introduced on the Z9100-ON. Introduced on the S4048-ON. Introduced on the S3048-ON. Introduced on the S6000-ON. Introduced on the Z9500. Introduced on the S6000. Rapid Spanning Tree Protocol (RSTP) 1379