Bgp Fast-External-Fallover - Dell S6000 Reference Manual

Version 7.8.1.0
Version 7.7.1.0
Version 7.4.1.0
Usage
This command is enabled by default, that is for all updates received from EBGP
Information
peers, BGP ensures that the first AS of the first AS segment is always the AS of the
peer. If not, the update is dropped and a counter is increments. Use the show ip
bgp neighbors command to view the "failed enforce-first-as check" counter.
If you disable the enforce-first-as command, it can be viewed using the show
ip protocols command.
In the event of an enfore-first-as check failure, the existing BGP session is flapped.
Related
show ip bgp neighbors
Commands
show ip protocols

bgp fast-external-fallover

Enable the fast external fallover feature, which immediately resets the BGP session if a link to a directly
connected external peer fails.
S6000
Syntax
bgp fast-external-fallover
To disable fast external fallover, use the no bgp fast-external-fallover
command.
Defaults Enabled
Command ROUTER BGP
Modes
Command
This guide is platform-specific. For command information about other platforms,
History
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version 9.0.2.0
Version
8.3.19.0
Version 8.3.11.1
Version 8.3.7.0
Version 7.8.1.0
Border Gateway Protocol
Introduced on the S-Series.
Introduced on the C-Series.
Introduced.
— views the information the BGP neighbors exchange.
— views information on routing protocols.
Introduced on the S6000.
Introduced on the S4820T.
Introduced on the Z9000.
Introduced on the S4810.
Introduced on the S-Series.
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