H3C S5500-EI series Operation Manual page 453

Operation Manual – IPv4 Routing
H3C S5500-EI Series Ethernet Switches
Configure
the
AS_PATH
attribute
To do...
Configure
repeating times
of local AS
number in
routes from a
peer/peer
group
Disable the
router from
taking
AS_PATH as a
factor for best
route selection
Specify a fake
AS number for
a peer/peer
group
Substitute local
AS number for
the AS number
of a peer/peer
group in the
AS_PATH
attribute
Configure BGP
to not keep
private AS
number in
AS_PATH of
updates to a
peer/peer
group
Use the
command...
peer { group-name |
ip-address }
allow-as-loop
[ number ]
bestroute
as-path-neglect
peer { group-name |
ip-address } fake-as
as-number
peer { group-name |
ip-address }
substitute-as
peer { group-name |
ip-address }
public-as-only
5-29
Chapter 5 BGP Configuration
Remarks
Optional
The local AS number can
not be repeated in routes
from the peer/peer group.
Optional
By default, the router takes
AS_PATH as a factor for
best route selection.
Optional
Not specified by default
This command is only
applicable to an EBGP peer
or peer group.
Optional
The substitution is not
configured by default.
Optional
By default, BGP updates
carry private AS numbers.