Configuring The As_Path Attribute - HPE 5800 Series Configuration Manual

Step
Enter IPv6 address family
3.
view or IPv6 BGP-VPN
instance view.
Configure a default MED
4.
value.
Enable the comparison of
5.
MED for routes from different
EBGP peers.
Enable the comparison of
6.
MED for routes from each
AS.
Enable the comparison of
7.
MED for routes from
confederation peers.

Configuring the AS_PATH attribute

Step
Enter system view.
1.
Enter BGP view.
2.
Enter IPv6 address family
3.
view.
Allow the local AS number to
4.
appear in AS_PATH of
routes from a peer or peer
group and specify the repeat
times.
Specify a fake AS number
5.
for an IPv6 peer or peer
group.
Disable IPv6 BGP from
6.
considering the AS_PATH
during best route selection.
Configure to carry only the
7.
public AS number in updates
sent to a peer or peer group.
Substitute the local AS
8.
number for the AS number of
an IPv6 peer or peer group
identified in the AS_PATH
attribute.
Command
ipv6-family [ vpn-instance
vpn-instance-name ]
default med med-value
compare-different-as-med
bestroute compare-med
bestroute med-confederation
Command
system-view
bgp as-number
ipv6-family
peer { ipv6-group-name |
ipv6-address } allow-as-loop
[ number ]
peer { ipv6-group-name |
ipv6-address } fake-as
as-number
bestroute as-path-neglect
peer { ipv6-group-name |
ipv6-address } public-as-only
peer { ipv6-group-name |
ipv6-address } substitute-as
326
Remarks
N/A
Optional.
Defaults to 0.
Optional.
Not enabled by default.
The IPv6 BGP-VPN instance view
does not support this command.
Optional.
Disabled by default.
The IPv6 BGP-VPN instance view
does not support this command.
Optional.
Disabled by default.
The IPv6 BGP-VPN instance view
does not support this command.
Remarks
N/A
N/A
N/A
Optional.
Not allowed by default.
Optional.
Not specified by default.
Optional.
Enabled by default.
Optional.
By default, IPv6 BGP updates
carry private AS number.
Optional.
Not substituted by default.