H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 5 BGP Configuration
5-29
To do…
Use the
command…
Remarks
Configure repeating
times of local AS
number in routes
from a peer/peer
group
peer
{ group-name |
ip-address }
allow-as-loop
[ number ]
Optional
The local AS number can
not be repeated in routes
from the peer/peer group.
Disable the router
from taking
AS_PATH as a
factor for best route
selection
bestroute
as-path-neglect
Optional
By default, the router
takes AS_PATH as a
factor for best route
selection.
Specify a fake AS
number for a
peer/peer group
peer
{ group-name |
ip-address }
fake-as as-nmber
Optional
Not specified by default
This command is only
applicable to an EBGP
peer or peer group.
Substitute local AS
number for the AS
number of a
peer/peer group in
the AS_PATH
attribute
peer
{ group-name |
ip-address }
substitute-as
Optional
The substitution is not
configured by default.
Configure
the
AS_PATH
attribute
Configure to not
keep private AS
number in
AS_PATH of
updates to a
peer/peer group
peer
{ group-name |
ip-address }
public-as-only
Optional
By default, BGP updates
carry private AS
numbers.