Dell C9010 Modular Chassis Switch EMC Networking Command-Line Reference Guide - Page 1284
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guard (OPTIONAL) Enter the keyword guard to display the type of guard enabled on a PVST interface and the current port state. Defaults none Command Modes ● EXEC ● EXEC Privilege Command History This guide is platform-specific. For command information about other platforms, refer to the relevant Dell Networking OS Command Line Reference Guide. The following is a list of the Dell Networking OS version history for this command. Version Description 9.13.0.1P1 9.9(0.0) 9.2(1.0) 8.3.19.0 8.3.11.1 8.3.7.0 8.5.1.0 8.4.2.1 7.6.1.0 7.5.1.0 6.4.1.0 6.2.1.1 Introduced peTenGigE interface support on the C9010. Introduced on the C9010. Introduced on the Z9500. Introduced on the S4820T. Introduced on the Z9000. Introduced on the S4810. Added support for 4-port 40G line cards on ExaScale. Support for the optional guard keyword was added on the C-Series, S-Series, and E-Series TeraScale. Introduced on the S-Series. Introduced on the C-Series. Expanded to display port error disable state (EDS) caused by loopback BPDU inconsistency and Port VLAN ID inconsistency. Introduced. Usage Information Example (Brief) The following describes the show spanning-tree pvst command shown in the following examples. Field Description Interface Name Instance Sts Guard Type PVST interface. PVST instance. Port state: root-inconsistent (INCON Root), forwarding (FWD), listening (LIS), blocking (BLK), or shut down (EDS Shut). Type of STP guard configured (Root, Loop, or BPDU guard). The peGigE ports and VP-LAG ports information is displayed as part of theshow spanning-tree 0 command output, only when the guard option is entered. Dell#show spanning-tree pvst vlan 3 brief VLAN 3 Executing IEEE compatible Spanning Tree Protocol Root ID Priority 4096, Address 0001.e801.6aa8 Root Bridge hello time 2, max age 20, forward delay 15 Bridge ID Priority 16384, Address 0001.e805.e306 Configured hello time 2, max age 20, forward delay 15 Interface Designated Name PortID Prio Cost Sts Cost Bridge ID PortID Te 1/0 128.130 128 20000 FWD 20000 4096 0001.e801.6aa8 128.426 Te 1/1 128.131 128 20000 BLK 20000 4096 0001.e801.6aa8 128.427 Te 1/16 128.146 128 20000 FWD 20000 16384 0001.e805.e306 128.146 Te 1/17 128.147 128 20000 FWD 20000 16384 0001.e805.e306 128.147 1284 Per-VLAN Spanning Tree Plus (PVST+)
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