217
forwarding
—Pops the label and forwards the packet out of the output interface
corresponding to the label.
•
POP
forwarding
—Pops the label and forwards the packet through the FIB table.
To specify the VPN label processing mode on an egress PE:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP instance view.
bgp
as-number
[
instance
instance-name
]
[
multi-session-thread
]
N/A
3.
Specify the VPN label
processing mode as POPGO
forwarding.
vpn popgo
The default is POP forwarding.
97B
Configuring BGP AS number substitution and
SoO attribute
When CEs at different sites have the same AS number, configure the BGP AS number substitution
feature to avoid route loss.
When a PE uses different interfaces to connect different CEs in a site, the BGP AS number
substitution feature introduces a routing loop. To remove the routing loop, configure the SoO attribute
on the PE.
For more information about the BGP AS number substitution feature and the SoO attribute, see
"
806H
BGP AS number substitution and SoO attribute
."
To configure BGP AS number substitution and SoO attribute:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP instance view.
bgp
as-number
[
instance
instance-name
]
[
multi-session-thread
]
N/A
3.
Enter BGP-VPN instance
view.
ip vpn-instance
vpn-instance-name
N/A
4.
Enable the BGP AS number
substitution feature.
peer
{
ipv4-address
[
mask-length
] |
group-name
}
substitute-as
By default, BGP AS number
substitution is disabled.
5.
Enter BGP-VPN IPv4 unicast
address family view.
address-family ipv4
[
unicast
]
N/A
6.
(Optional.) Configure the
SoO attribute for a BGP peer
or peer group.
peer
{
group-name
|
ipv4-address
[
mask-length
] }
soo
site-of-origin
By default, the SoO attribute is not
configured.
For more information about the commands in this section, see
Layer 3—IP Routing Command
Reference
.
98B
Configuring MPLS L3VPN FRR
You can use the following methods to configure MPLS L3VPN FRR:
