Reference Guide

Border Gateway Protocol IPv4 (BGPv4) | 199
BGP Configuration
To enable the BGP process and begin exchanging information, you must assign an AS number and use
commands in the ROUTER BGP mode to configure a BGP neighbor.
Defaults
By default, BGP is disabled.
By default, FTOS compares the MED attribute on different paths from within the same AS (the
bgp
always-compare-med
command is not enabled).
Table 9-3, "FTOS BGP Defaults," in Border Gateway Protocol IPv4 (BGPv4) displays the default values
for BGP on FTOS.
Configuration Task List for BGP
The following list includes the configuration tasks for BGP:
• Enable BGP
• Configure AS4 Number Representations
• Configure Peer Groups
Note: In FTOS, all newly configured neighbors and peer groups are disabled. You must enter the
neighbor {ip-address | peer-group-name} no shutdown command to enable a neighbor or peer
group.
Table 9-3. FTOS BGP Defaults
Item Default
BGP Neighbor Adjacency changes All BGP neighbor changes are logged.
Fast External Fallover feature Enabled
graceful restart feature Disabled
Local preference 100
MED 0
Route Flap Damping Parameters half-life = 15 minutes
reuse = 750
suppress = 2000
max-suppress-time = 60 minutes
Distance external distance = 20
internal distance = 200
local distance = 200
Timers keepalive = 60 seconds
holdtime = 180 seconds