10
Step Command
Remarks
4.
(Optional.) Redistribute
remote site routes advertised
by the PE.
import-route
{
isis
[
process-id
]
|
ospf
[
process-id
] |
rip
[
process-id
]
|
bgp
[
allow-ibgp
] |
direct
|
static
} [
cost
cost
|
cost-type
{
external
|
internal
} |
[
level-1
|
level-1-2
|
level-2
] |
route-policy
route-policy-name
|
tag
tag
] *
By default, IS-IS does not
redistribute routes of any other
routing protocol.
If you do not specify the route level
in the command, the command
redistributes routes to the level-2
routing table by default.
5.
Return to system view.
quit
N/A
6.
Enter interface view.
interface
interface-type
interface-number
N/A
7.
Enable the IS-IS process on
the interface.
isis enable
[
process-id
]
By default, IS-IS is disabled.
For more information about IS-IS, see
Layer 3—IP Routing Configuration Guide
.
Configuring EBGP between an MCE and a VPN site
To use EBGP for exchanging routing information between an MCE and VPN sites, you must configure a
BGP peer for each VPN instance on the MCE, and redistribute the IGP routes of each VPN instance on
the VPN sites.
1.
Configure the MCE:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view.
bgp
as-number
N/A
3.
Enter BGP-VPN instance
view.
ip vpn-instance
vpn-instance-name
N/A
4.
Specify an EBGP peer or
peer group.
peer
{
group-name
|
ip-address
}
[
as-number
as-number
]
By default, no BGP peer or peer
group is specified.
5.
Create and enter BGP-VPN
IPv4 unicast instance view.
ipv4-family
[
unicast
]
N/A
6.
Enable exchange of IPv4
unicast routes with the
specified peer or peer
group.
peer
{
group-name
|
ip-address
}
enable
BGP cannot exchange IPv4
unicast routes with any peer or
peer group.
7.
Allow routing loops: allow
the local AS number to
appear in the AS_PATH
attribute of routes received
from the peer or peer group
and specify the maximum
appearance times.
peer
{
group-name
|
ip-address
}
allow-as-loop
[
number
]
By default, the local AS number
is not allowed to appear in the
AS_PATH attribute of routes from
a peer or peer group.
8.
Redistribute remote site
routes advertised by the PE.
import-route
protocol
[
process-id
|
all-processes
]
By default, BGP does not
redistribute routes from any other
routing protocol.