Juniper JUNOSE, Руководство по настройке

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Configuring BGP Routing Policy .....................................................................70
Types of BGP Route Maps .......................................................................71
Applying Table Maps ...............................................................................81
Access Lists .............................................................................................83
Filtering Prefixes ..............................................................................83
Filtering AS Paths with a Filter List ...................................................87
Filtering AS Paths with a Route Map .................................................90
Configuring the Community Attribute .....................................................92
Community Lists .....................................................................................95
Resetting a BGP Connection ....................................................................98
Changing Policies Without Disruption .....................................................99
Soft Reconfiguration .........................................................................99
Route-Refresh Capability ................................................................100
Cooperative Route Filtering ............................................................100
Configuring Route Flap Dampening ......................................................102
Global Route Flap Dampening ........................................................102
Policy-Based Route Flap Dampening ..............................................104
Policy Testing .......................................................................................105
Selecting the Best Path ................................................................................106
BGP Path Decision Algorithm ................................................................107
Configuring Next-Hop Processing .........................................................107
Next Hops ......................................................................................108
Next-Hop-Self .................................................................................110
Assigning a Weight to a Route ..............................................................112
Using the neighbor weight Command ............................................112
Using a Route Map .........................................................................113
Using an AS-Path Access List ..........................................................113
Configuring the Local-Pref Attribute ......................................................115
Using the bgp default local-preference Command ..........................116
Using a Route Map to Set the Local Preference ...............................117
Understanding the Origin Attribute .......................................................117
Understanding the AS-Path Attribute ....................................................120
Configuring a Local AS ..........................................................................121
Configuring the MED Attribute ..............................................................122
Missing MED Values .......................................................................125
Comparing MED Values Within a Confederation ............................125
Capability Negotiation ...........................................................................126
Cooperative Route Filtering ............................................................127
Dynamic Capability Negotiation .....................................................127
Four-Octet AS Numbers ..................................................................128
Graceful Restarts ............................................................................128
Route Refresh .................................................................................132
Interactions Between BGP and IGPs ............................................................133
Synchronizing BGP with IGPs ................................................................133
Disabling Synchronization ..............................................................134
Setting the Administrative Distance for a Route ....................................136
Configuring Backdoor Routes ................................................................139
Setting the Maximum Number of Equal-Cost Multipaths .......................140
Detecting Peer Reachability with BFD .........................................................141
BFD and BGP Graceful Restart ..............................................................143
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Table of Contents