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ge-0/0/6.0 128:519 128:519 32768.0019e2503f00 20000 FWD DESG
[output truncated]
Meaning
The output from the operational mode command
show spanning-tree interface
shows
that
ge-0/0/5.0
and interface
ge-0/0/6.0
are designated ports in a forwarding state.
Verifying That BPDU Protection is Working Correctly
Purpose
In this example, the PCs connected to Switch 2 start sending BPDUs to interface
ge-0/0/5.0
and interface
ge-0/0/6.0
. Verify that BPDU protection is configured on the
interfaces.
Action
Use the operational mode command:
user@switch>
show spanning-tree interface
Spanning tree interface parameters for instance 0
Interface Port ID Designated Designated Port State Role
port ID bridge ID Cost
ge-0/0/0.0 128:513 128:513 32768.0019e2503f00 20000 BLK DIS
ge-0/0/1.0 128:514 128:514 32768.0019e2503f00 20000 BLK DIS
ge-0/0/2.0 128:515 128:515 32768.0019e2503f00 20000 BLK DIS
ge-0/0/3.0 128:516 128:516 32768.0019e2503f00 20000 FWD DESG
ge-0/0/4.0 128:517 128:517 32768.0019e2503f00 20000 FWD DESG
ge-0/0/5.0 128:518 128:518 32768.0019e2503f00 20000 BLK DIS
(Bpdu—Incon)
ge-0/0/6.0 128:519 128:519 32768.0019e2503f00 20000 BLK DIS
(Bpdu—Incon)
ge-0/0/7.0 128:520 128:1 16384.00aabbcc0348 20000 FWD ROOT
ge-0/0/8.0 128:521 128:521 32768.0019e2503f00 20000 FWD DESG
[output truncated]
Meaning
When BPDUs are sent from the PCs to interface
ge-0/0/5.0
and interface
ge-0/0/6.0
on Switch 2, the output from the operational mode command
show spanning-tree
interface
shows that the interfaces have transitioned to a BPDU inconsistent state. The
BPDU inconsistent state makes the interfaces block and prevents them from forwarding
traffic.
Disabling the BPDU protection configuration on an interface does not unblock the
interface. If the disable-timeout statement has been included in the BPDU configuration,
the interface automatically returns to service after the timer expires. Otherwise, use the
operational mode command clear ethernet-switching bpdu-error to unblock the interface.
If the PCs connected to Switch 2 send BPDUs to the interfaces again, BPDU protection
is triggered once more and the interfaces transition back to the BPDU inconsistent state.
In such cases, you need to find and repair the misconfiguration on the PCs that is triggering
BPDUs being sent to Switch 2.
Related
Documentation
Example: Configuring Faster Convergence and Improving Network Stability with RSTP
on EX Series Switches on page 1527
•
•
Example: Configuring BPDU Protection on non-STP Interfaces to Prevent STP
Miscalculations on EX Series Switches on page 1565
Copyright © 2010, Juniper Networks, Inc.
1564
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3
Содержание JUNOS OS 10.3 - SOFTWARE
Страница 201: ...CHAPTER 10 Operational Mode Commands for Software Installation 105 Copyright 2010 Juniper Networks Inc ...
Страница 249: ...CHAPTER 13 Operational Mode Commands for User Interfaces 153 Copyright 2010 Juniper Networks Inc ...
Страница 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Страница 369: ... Temperature OK 273 Copyright 2010 Juniper Networks Inc Chapter 17 Operational Mode Commands for System Setup ...
Страница 483: ...CHAPTER 21 Configuration Statements for Power Management 387 Copyright 2010 Juniper Networks Inc ...
Страница 487: ...CHAPTER 22 Operational Mode Commands for Power Management 391 Copyright 2010 Juniper Networks Inc ...
Страница 543: ...CHAPTER 27 Operational Mode Commands for Configuration Management 447 Copyright 2010 Juniper Networks Inc ...
Страница 631: ...CHAPTER 33 Operational Mode Commands for User and Access Management 535 Copyright 2010 Juniper Networks Inc ...
Страница 709: ...CHAPTER 38 Operational Mode Commands for System Services 613 Copyright 2010 Juniper Networks Inc ...
Страница 763: ...CHAPTER 41 Configuration Statements for System Monitoring 667 Copyright 2010 Juniper Networks Inc ...
Страница 817: ...CHAPTER 42 Operational Mode Commands for System Monitoring 721 Copyright 2010 Juniper Networks Inc ...
Страница 1014: ...Copyright 2010 Juniper Networks Inc 918 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1016: ...Copyright 2010 Juniper Networks Inc 920 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1042: ...Copyright 2010 Juniper Networks Inc 946 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1106: ...Copyright 2010 Juniper Networks Inc 1010 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1130: ...Copyright 2010 Juniper Networks Inc 1034 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1142: ...Copyright 2010 Juniper Networks Inc 1046 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1163: ...CHAPTER 49 Operational Mode Commands for Virtual Chassis 1067 Copyright 2010 Juniper Networks Inc ...
Страница 1188: ...Copyright 2010 Juniper Networks Inc 1092 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1190: ...Copyright 2010 Juniper Networks Inc 1094 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1210: ...Copyright 2010 Juniper Networks Inc 1114 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1238: ...Copyright 2010 Juniper Networks Inc 1142 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1270: ...Copyright 2010 Juniper Networks Inc 1174 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1276: ...Copyright 2010 Juniper Networks Inc 1180 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Страница 1378: ...Copyright 2010 Juniper Networks Inc 1282 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1400: ...Copyright 2010 Juniper Networks Inc 1304 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1470: ...Copyright 2010 Juniper Networks Inc 1374 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1492: ...Copyright 2010 Juniper Networks Inc 1396 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1565: ...CHAPTER 63 Operational Mode Commands for Bridging and VLANs 1469 Copyright 2010 Juniper Networks Inc ...
Страница 1612: ...Copyright 2010 Juniper Networks Inc 1516 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1614: ...Copyright 2010 Juniper Networks Inc 1518 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1622: ...Copyright 2010 Juniper Networks Inc 1526 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1682: ...Copyright 2010 Juniper Networks Inc 1586 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1686: ...Copyright 2010 Juniper Networks Inc 1590 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1730: ...Copyright 2010 Juniper Networks Inc 1634 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1731: ...CHAPTER 69 Operational Mode Commands for Spanning Tree Protocols 1635 Copyright 2010 Juniper Networks Inc ...
Страница 1760: ...Copyright 2010 Juniper Networks Inc 1664 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1762: ...Copyright 2010 Juniper Networks Inc 1666 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1806: ...Copyright 2010 Juniper Networks Inc 1710 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2106: ...Copyright 2010 Juniper Networks Inc 2010 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2107: ...CHAPTER 74 Operational Commands for Layer 3 Protocols 2011 Copyright 2010 Juniper Networks Inc ...
Страница 2408: ...Copyright 2010 Juniper Networks Inc 2312 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2410: ...Copyright 2010 Juniper Networks Inc 2314 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2418: ...Copyright 2010 Juniper Networks Inc 2322 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2434: ...Copyright 2010 Juniper Networks Inc 2338 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2438: ...Copyright 2010 Juniper Networks Inc 2342 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2517: ...CHAPTER 80 Operational Mode Commands for IGMP Snooping and Multicast 2421 Copyright 2010 Juniper Networks Inc ...
Страница 2618: ...Copyright 2010 Juniper Networks Inc 2522 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2643: ...Figure 51 Topology for Configuration 2547 Copyright 2010 Juniper Networks Inc Chapter 82 Examples Access Control Configuration ...
Страница 2732: ...Copyright 2010 Juniper Networks Inc 2636 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Страница 2886: ...Copyright 2010 Juniper Networks Inc 2790 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2911: ...CHAPTER 92 Operational Mode Commands for Rate Limiting 2815 Copyright 2010 Juniper Networks Inc ...
Страница 2920: ...Copyright 2010 Juniper Networks Inc 2824 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2944: ...Copyright 2010 Juniper Networks Inc 2848 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3081: ...CHAPTER 99 Operational Mode Commands for Port Security 2985 Copyright 2010 Juniper Networks Inc ...
Страница 3093: ...ge 0 0 13 0 100 voice 2997 Copyright 2010 Juniper Networks Inc Chapter 99 Operational Mode Commands for Port Security ...
Страница 3096: ...Copyright 2010 Juniper Networks Inc 3000 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3134: ...Copyright 2010 Juniper Networks Inc 3038 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3158: ...Copyright 2010 Juniper Networks Inc 3062 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3178: ...Copyright 2010 Juniper Networks Inc 3082 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3216: ...Copyright 2010 Juniper Networks Inc 3120 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3217: ...CHAPTER 106 Operational Mode Commands for Firewall Filters 3121 Copyright 2010 Juniper Networks Inc ...
Страница 3240: ...Copyright 2010 Juniper Networks Inc 3144 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3268: ...Copyright 2010 Juniper Networks Inc 3172 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3296: ...Copyright 2010 Juniper Networks Inc 3200 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Страница 3398: ...Copyright 2010 Juniper Networks Inc 3302 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3410: ...Copyright 2010 Juniper Networks Inc 3314 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3422: ...Copyright 2010 Juniper Networks Inc 3326 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Страница 3444: ...Copyright 2010 Juniper Networks Inc 3348 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3446: ...Copyright 2010 Juniper Networks Inc 3350 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...
Страница 3632: ...Copyright 2010 Juniper Networks Inc 3536 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3634: ...Copyright 2010 Juniper Networks Inc 3538 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3672: ...Copyright 2010 Juniper Networks Inc 3576 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3820: ...Copyright 2010 Juniper Networks Inc 3724 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3858: ...Copyright 2010 Juniper Networks Inc 3762 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3928: ...Copyright 2010 Juniper Networks Inc 3832 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3929: ...CHAPTER 135 Operational Mode Commands for General Network Management and Monitoring 3833 Copyright 2010 Juniper Networks Inc ...
Страница 3946: ...Copyright 2010 Juniper Networks Inc 3850 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...