H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Table of Contents
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5.5.1 Prerequisites ......................................................................................................... 5-27
5.5.2 Configuration Procedure ....................................................................................... 5-27
5.6 Tuning and Optimizing BGP Networks ............................................................................ 5-30
5.6.1 Prerequisites ......................................................................................................... 5-31
5.6.2 Configuration Procedure ....................................................................................... 5-31
5.7 Configuring a Large Scale BGP Network ........................................................................ 5-33
5.7.1 Configuration Prerequisites................................................................................... 5-33
5.7.2 Configuring BGP Peer Groups.............................................................................. 5-33
5.7.3 Configuring BGP Community ................................................................................ 5-34
5.7.4 Configuring a BGP Route Reflector ...................................................................... 5-35
5.7.5 Configuring a BGP Confederation......................................................................... 5-36
5.8 Displaying and Maintaining BGP ..................................................................................... 5-37
5.8.1 Displaying BGP ..................................................................................................... 5-37
5.8.2 Resetting BGP Connections ................................................................................. 5-38
5.8.3 Clearing BGP Information ..................................................................................... 5-39
5.9 BGP Configuration Examples .......................................................................................... 5-39
5.9.1 BGP Basic Configuration ...................................................................................... 5-39
5.9.2 BGP and IGP Synchronization Configuration ....................................................... 5-43
5.9.3 BGP Load Balancing and MED Attribute Configuration........................................ 5-46
5.9.4 BGP Community Configuration............................................................................. 5-48
5.9.5 BGP Route Reflector Configuration ...................................................................... 5-51
5.9.6 BGP Confederation Configuration......................................................................... 5-53
5.9.7 BGP Path Selection Configuration........................................................................ 5-57
5.10 Troubleshooting BGP .................................................................................................... 5-61
5.10.1 No BGP Peer Relationship Established.............................................................. 5-61
Chapter 6 Routing Policy Configuration..................................................................................... 6-1
6.1 Introduction to Routing Policy ............................................................................................ 6-1
6.1.1 Routing Policy and Policy Routing .......................................................................... 6-1
6.1.2 Filters....................................................................................................................... 6-2
6.1.3 Routing Policy Application....................................................................................... 6-3
6.2 Routing Policy Configuration Task List.............................................................................. 6-3
6.3 Defining Filtering Lists ....................................................................................................... 6-4
6.3.1 Prerequisites ........................................................................................................... 6-4
6.3.2 Defining an IPv4 prefix List ..................................................................................... 6-4
6.3.3 Defining an AS Path List ......................................................................................... 6-5
6.3.4 Defining a Community List ...................................................................................... 6-5
6.3.5 Defining an Extended Community List.................................................................... 6-6
6.4 Configuring a Routing Policy ............................................................................................. 6-6
6.4.1 Prerequisites ........................................................................................................... 6-6
6.4.2 Creating a Routing Policy........................................................................................ 6-6
6.4.3 Defining if-match Clauses for the Routing Policy.................................................... 6-7
6.4.4 Defining apply Clauses for the Routing Policy........................................................ 6-9