H3C Technologies H3C S6800 Series Switches - Manual (Page 34)

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Step Command Remarks
2. Enter VPN instance view or
IPv6 VPN view.
• Enter VPN instance view:
ip vpn-instance
vpn-instance-name
• Enter IPv6 VPN view:
address-family ipv6
Configurations made in VPN
instance view apply to both IPv4
VPN and IPv6 VPN.
IPv6 VPN prefers the
configurations in IPv6 VPN view
over the configurations in VPN
instance view.
3. Configure route targets.
vpn-target vpn-target&<1-8>
[ both | export-extcommunity |
import-extcommunity ]
By default, no route targets are
configured.
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.
5. Apply an import routing
policy.
import route-policy route-policy
By default, all routes matching the
import target attribute are
accepted.
Make sure the routing policy
already exists. Otherwise, the
device does not filter received
routes.
For information about routing
policies, see Layer 3—IP Routing
Configuration Guide.
6. Apply an export routing
policy.
export route-policy route-policy
By default, routes to be advertised
are not filtered.
Make sure the routing policy
already exists. Otherwise, the
device does not filter routes to be
advertised.
For information about routing
policies, see Layer 3—IP Routing
Configuration Guide.
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, disable routing loop detection to avoid route loss during route
calculation, and disable route redistribution between routing protocols to save system resources.
Before you configure routing on an MCE, complete the following tasks: