Controlling route generation ··························································································································· 203

Configuration prerequisites ···················································································································· 203

Injecting a local network ························································································································· 203

Redistributing IGP routes ······················································································································· 204

Controlling route distribution and reception ··································································································· 204

Configuring BGP route summarization ··································································································· 204

Advertising a default route to a peer or peer group ················································································ 205

Configuring BGP route distribution/reception filtering policies ······························································· 206

Enabling BGP and IGP route synchronization ······················································································· 208

Limiting prefixes received from a peer or peer group ············································································· 209

Configuring BGP route dampening ········································································································ 210

Controlling BGP path selection ······················································································································ 210

Specifying a preferred value for routes received ···················································································· 210

Configuring preferences for BGP routes ································································································ 211

Configure the default local preference ··································································································· 212

Configuring the MED attribute ················································································································ 212

Configuring the NEXT_HOP attribute ···································································································· 215

Configuring the AS_PATH attribute ······································································································· 216

Tuning and optimizing BGP networks ············································································································ 219

Configuring the BGP keepalive interval and holdtime ············································································ 219

Configuring the interval for sending the same update ············································································ 220

Enabling the BGP ORF capability ·········································································································· 220

Enabling 4-byte AS number suppression ······························································································· 221

Enabling quick reestablishment of direct EBGP session ······································································· 222

Enabling MD5 authentication for BGP peers ························································································· 222

Configuring BGP load balancing ············································································································ 223

Forbidding session establishment with a peer or peer group ································································· 223

Configuring GTSM for BGP ···················································································································· 224

Disabling BGP route advertisement to a peer or peer group ································································· 225

Configuring BGP soft-reset ···················································································································· 225

Disabling BGP routing policies from automatically taking effect ···································································· 226

Configuring a large scale BGP network ········································································································· 227

Configuration prerequisites ···················································································································· 227

Configuring BGP community ·················································································································· 227

Configuring a BGP route reflector ·········································································································· 228

Configuring a BGP confederation ·········································································································· 229

Configuring BGP GR ······································································································································ 230

Configuring BGP NSR ··································································································································· 231

Enabling trap ·················································································································································· 232

Enabling logging of session state changes ···································································································· 232

Configuring BFD for BGP ······························································································································· 232

Displaying and maintaining BGP ··················································································································· 233

Displaying BGP ······································································································································ 233

Resetting BGP session ·························································································································· 235

Clearing BGP information ······················································································································ 235

BGP configuration examples ························································································································· 235

BGP basic configuration ························································································································· 235

BGP and IGP synchronization configuration ·························································································· 239

BGP load balancing configuration ·········································································································· 242

BGP route summarization configuration ································································································ 244

BGP community configuration ················································································································ 247

BGP route reflector configuration ··········································································································· 250

BGP confederation configuration ··········································································································· 251

BGP path selection configuration ··········································································································· 255

BGP GR configuration ···························································································································· 258

BFD for BGP configuration ····················································································································· 259

BGP dynamic peer configuration ··········································································································· 263

Troubleshooting BGP ····································································································································· 265

BGP peer relationship not established ··································································································· 265

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