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CHAPTER 12: ADVANCED BGP (Path Selection (Local Originated (Network…
CHAPTER 12:
ADVANCED BGP
BGP Multihoming
Enterprise Transit Routing :forbidden:
Branch Transit Routing :forbidden:
Conditional Matching
Access-Control List
Sources identifies the networks
Destination matches network masks
Prefix Matching
High-order bit pattern
High-order bit count
Matching length parameter
ge
le
Prefix Lists
Regular Expressions
Route Maps
Sequence Number
Conditional Matching Criteria
match as-path
match ip adress
Processing action
Optional action
set as-path prepend
set local-preference
continue option
Route Filtering
Distribute List (ACL)
Prefix List
AS path ACL/filtering
Route maps
Clear BGP connections
clear ip bgp
ip-address
[soft]
BGP Communities
Private Communities
Well-Known Communities (RFC1997)
Internet
No_Advertise
No_Export
Configuration
ip bgp-community new-format
ip community-list
1-99: Standard
100-500: Extended
Optional Transitive
Path Selection
Weight
Local Preference
Local Originated
Network statement
Aggregate statement
Accumulated IGP
Shortest AS_Path
Origin
IGP > EGP > Incomplete
MED
eBGP vs iBGP
Lowest IGP Metric
Oldest eBGP Path
Router ID
Minimum Cluster
Lowest Neighbor Address