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By default, the system compares the MED attribute on different paths from within the same AS (the bgp
always-compare-med command is not enabled).
NOTE:
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 in the Dell Networking OS.
Table 9. BGP Default Values
Item
BGP Neighbor Adjacency changes
Fast External Fallover feature
Graceful Restart feature
Local preference
MED
Route Flap Damping Parameters
Distance
Timers
Add-path
Enabling BGP
By default, BGP is not enabled on the system. The Dell Networking OS supports one autonomous system (AS)
and assigns the AS number (ASN).
To establish BGP sessions and route traffic, configure at least one BGP neighbor or peer.
In BGP, routers with an established TCP connection are called neighbors or peers. After a connection is
established, the neighbors exchange full BGP routing tables with incremental updates afterward. In addition,
neighbors exchange KEEPALIVE messages to maintain the connection.
In BGP, neighbor routers or peers can be classified as internal or external. External BGP peers must be
connected physically to one another (unless you enable the EBGP multihop feature), while internal BGP peers
do not need to be directly connected. The IP address of an EBGP neighbor is usually the IP address of the
Default
All BGP neighbor changes are logged.
Disabled
Disabled
100
0
half-life = 15 minutes
reuse = 750
suppress = 2000
max-suppress-time = 60 minutes
external distance = 20
internal distance = 200
local distance = 200
keepalive = 60 seconds
holdtime = 180 seconds
Disabled
Border Gateway Protocol IPv4 (BGPv4)
210
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Troubleshooting
