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Traps (notifications) specified in the BGP4 MIB draft <draft-ietf-idr-bgp4–mibv2–05.txt> are not supported. Such
traps (bgpM2Established and bgpM2BackwardTransition) are supported as part of RFC 1657.
Configuration Information
The software supports BGPv4 as well as the following:
● deterministic multi-exit discriminator (MED) (default)
● a path with a missing MED is treated as worst path and assigned an MED value of (0xffffffff)
● the community format follows RFC 1998
● delayed configuration (the software at system boot reads the entire configuration file prior to sending messages to start
BGP peer sessions)
The following are not yet supported:
● auto-summarization (the default is no auto-summary)
● synchronization (the default is no synchronization)
BGP Configuration
To enable the BGP process and begin exchanging information, assign an AS number and use commands in ROUTER BGP mode
to configure a BGP neighbor.
By default, BGP is disabled.
By default, Dell Networking OS compares the MED attribute on different paths from within the same AS (the bgp always-
compare-med command is not enabled).
NOTE:
In Dell Networking OS, all newly configured neighbors and peer groups are disabled. To enable a neighbor or peer
group, enter the neighbor {ip-address | peer-group-name} no shutdown command.
The following table displays the default values for BGP on Dell Networking OS.
Table 10. BGP Default Values
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
Border Gateway Protocol IPv4 (BGPv4) 169