vi
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
