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Troubleshooting Unicast RPF
Troubleshooting issues for unicast reverse-path forwarding (RPF) on EX Series switches
include:
1.
Legitimate Packets Are Discarded on page 1178
Legitimate Packets Are Discarded
Problem
The switch filters valid packets from legitimate sources, which results in the switch's
discarding packets that should be forwarded.
Solution
The interface or interfaces on which legitimate packets are discarded are asymmetrically
routed interfaces. An asymmetrically routed interface uses different paths to send and
receive packets between the source and the destination, so the interface that receives
a packet is not the same interface the switch uses to reply to the packet's source.
Unicast RPF works properly only on symmetrically routed interfaces. A symmetrically
routed interface is an interface that uses the same route in both directions between the
source and the destination. Unicast RPF filters packets by checking the forwarding table
for the best return path to the source of an incoming packet. If the best return path uses
the same interface as the interface that received the packet, the switch forwards the
packet. If the best return path uses a different interface than the interface that received
the packet, the switch discards the packet.
NOTE:
On EX3200 and EX4200 switches, unicast RPF works properly only
if all switch interfaces—including aggregated Ethernet interfaces (also referred
to as link aggregation groups or LAGs) and routed VLAN interfaces (RVIs)—are
symmetrically routed, because unicast RPF is enabled globally on all switch
interfaces.
Related
Documentation
Verifying Unicast RPF Status on page 1171
•
•
Understanding Unicast RPF for EX Series Switches on page 1105
Troubleshooting Uplink Module Installation or Replacement on EX3200 and EX4200
Switches
This topic provides troubleshooting information for specific problems related to uplink
module ports on EX3200 and EX4200 switches.
1.
Virtual Chassis port (VCP) connection does not work on page 1179
2.
One of the last four network ports on an EX3200 switch with an SFP or SFP+ uplink
module installed is disabled on page 1179
Copyright © 2010, Juniper Networks, Inc.
1178
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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...