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H3C Technologies H3C S7500E Series Switches User Manual

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Controlling Route Distribution and Reception ·······················································································6-22

Prerequisites··································································································································6-22

Configuring BGP Route Summarization························································································6-22

Advertising a Default Route to a Peer or Peer Group ···································································6-23

Configuring BGP Route Distribution/Reception Filtering Policies ·················································6-23

Enabling BGP and IGP Route Synchronization ············································································6-25

Limiting Prefixes Received from a Peer/Peer Group ····································································6-25

Configuring BGP Route Dampening ·····························································································6-26

Configuring a Shortcut Route ········································································································6-27

Configuring BGP Route Attributes ········································································································6-27

Prerequisites··································································································································6-27

Specifying a Preferred Value for Routes Received·······································································6-27

Configuring Preferences for BGP Routes ·····················································································6-27

Configure the Default Local Preference ························································································6-28

Configuring the MED Attribute·······································································································6-28

Configuring the Next Hop Attribute································································································6-30

Configuring the AS-PATH Attribute ·······························································································6-32

Tuning and Optimizing BGP Networks ·································································································6-34

Prerequisites··································································································································6-34

Configuring BGP Keepalive Interval and Holdtime ·······································································6-34

Configuring the Interval for Sending the Same Update·································································6-35

Configuring BGP Soft-Reset ·········································································································6-35

Enabling the BGP ORF Capability ································································································6-36

Enabling Quick eBGP Session Reestablishment··········································································6-37

Enabling MD5 Authentication for TCP Connections ·····································································6-38

Configuring BGP Load Balancing··································································································6-38

Forbiding Session Establishment with a Peer or Peer Group ·······················································6-39

Configuring a Large Scale BGP Network······························································································6-39

Configuration Prerequisites ···········································································································6-39

Configuring BGP Peer Groups ······································································································6-39

Configuring BGP Community ········································································································6-42

Configuring a BGP Route Reflector ······························································································6-42

Configuring a BGP Confederation·································································································6-43

Configuring BGP GR·····························································································································6-44

Enabling Trap········································································································································6-45

Enabling Logging of Peer State Changes·····························································································6-45

Configuring BFD for BGP······················································································································6-46

Displaying and Maintaining BGP ··········································································································6-46

Displaying BGP ·····························································································································6-46

Resetting BGP Connections··········································································································6-48

Clearing BGP Information ·············································································································6-48

BGP Configuration Examples ···············································································································6-48

BGP Basic Configuration···············································································································6-48

BGP and IGP Synchronization Configuration ···············································································6-52

BGP Load Balancing Configuration·······························································································6-54

BGP Community Configuration ·····································································································6-57