27
Step Command
Remarks
4.
Set the maximum number of
active routes supported.
routing-table
limit
number
{
warn-threshold
|
simply-alert
}
By default, the maximum number
of active routes for the VPN
instance is not limited.
Setting the maximum number of
active routes for a VPN instance
can prevent the PE from storing
too many routes.
Configuring routing on an MCE
An MCE implements service isolation through route isolation. MCE routing configuration includes the
following:
•
MCE-VPN site routing configuration.
•
MCE-PE routing configuration.
On a PE in an MCE network environment, do the following:
•
Disable routing loop detection to avoid route loss during route calculation.
•
Disable route redistribution between routing protocols to save system resources.
Before you configure routing on an MCE, configure VPN instances, and bind the VPN instances to
the interfaces connected to the VPN sites and those connected to the PE.
Configuring routing between an MCE and a VPN site
You can configure static routing, RIPng, OSPFv3, IPv6 IS-IS, or EBGP between an MCE and a VPN
site.
Configuring static routing between an MCE and a VPN site
An MCE can reach a VPN site through an IPv6 static route. IPv6 static routing on a traditional CE is
globally effective and does not support address overlapping among VPNs. An MCE supports binding
an IPv6 static route with an IPv6 VPN instance, so that the IPv6 static routes of different IPv6 VPN
instances can be isolated from each other.
To configure IPv6 static routing between an MCE and a VPN site:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure an IPv6
static route for an IPv6
VPN instance.
ipv6 route-static
vpn-instance
s-vpn-instance-name
ipv6-address prefix-length
{
interface-type interface-number
[
next-hop-address
] |
nexthop-address
[
public
]
|
vpn-instance
d-vpn-instance-name
nexthop-address
} [
permanent
] [
preference
preference-value
] [
tag
tag-value
] [
description
description-text
]
By default, no IPv6 static
route is configured.
Perform this
configuration on the
MCE. On a VPN site,
configure normal IPv6
static routes.
3.
(Optional.) Configure
the default preference
for IPv6 static routes.
ipv6 route-static default-preference
default-preference-value
The default preference
for IPv6 static routes is
60.
Configuring RIPng between an MCE and a VPN site
A RIPng process belongs to the public network or a single IPv6 VPN instance. If you create a RIPng
process without binding it to an IPv6 VPN instance, the process belongs to the public network. By
