beautypg.com

Configuring the med attribute, Configuring the as_path attribute – H3C Technologies H3C SecPath F1000-E User Manual

Page 819

background image

794

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter BGP view.

bgp as-number

N/A

3.

Enter IPv6 address family view

or IPv6 BGP-VPN instance
view.

ipv6-family [ vpn-instance
vpn-instance-name ]

N/A

4.

Configure preference values
for IPv6 BGP external,

internal, local routes.

preference { external-preference
internal-preference

local-preference | route-policy
route-policy-name }

Optional.
The default preference values of
external, internal and local routes are

255, 255, and 130, respectively.

5.

Configure the default local

preference.

default local-preference value

Optional.
The value defaults to 100.

6.

Advertise routes to an IPv6
peer/peer group with the

local router as the next hop.

peer { ipv6-group-name |
ipv6-address
} next-hop-local

By default, IPv6 BGP specifies the
local router as the next hop for routes
sent to an IPv6 EBGP peer/peer

group, but does not change the next

hop for routes sent to an IPv6 IBGP
peer/peer group.

Configuring the MED attribute

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter BGP view.

bgp as-number

N/A

3.

Enter IPv6 address family view
or IPv6 BGP-VPN instance

view.

ipv6-family [ vpn-instance
vpn-instance-name ]

N/A

4.

Configure a default MED
value.

default med med-value

Optional.
0 by default.

5.

Enable the comparison of

MED for routes from different

EBGP peers.

compare-different-as-med

Optional.
Not enabled by default.

6.

Enable the comparison of
MED for routes from each AS. bestroute compare-med

Optional.
Disabled by default.

7.

Enable the comparison of
MED for routes from

confederation peers.

bestroute med-confederation

Optional.
Disabled by default.

Configuring the AS_PATH attribute

Step Command

Remarks

1.

Enter system view.

system-view

N/A