3Com S7906E Configuration Manual page 1679

Configuration Procedures
Configuring traffic forwarding involves these tasks:
Forwarding traffic along MPLS TE tunnels using static routes
Forwarding traffic along MPLS TE tunnels through automatic route advertisement
Forwarding traffic along MPLS TE tunnels using static routes
Follow these steps to create static routes for routing traffic along an MPLS TE tunnel:
To do...
Enter system view
Create a static route for
forwarding traffic along an
MPLS TE tunnel
The interface-type argument in the ip route-static command must be tunnel. In addition, the
preference value must be set.
For more information about static routing, refer to Static Routing Commands in the IP Routing
Volume.
Forwarding traffic along MPLS TE tunnels through automatic route advertisement
Two approaches, IGP shortcut and forwarding adjacency, are available to automatic route
advertisement to advertise MPLS TE tunnel interface routes to IGPs, allowing traffic to be routed down
MPLS TE tunnels.
In either approach, TE tunnels are considered point-to-point links and TE tunnel interfaces can be set
as outgoing interfaces.
IGP shortcut and forwarding adjacency are different in that in the forwarding adjacency approach,
routes with TE tunnel interfaces as outgoing interfaces are advertised to neighboring devices but not in
the IGP shortcut approach. Therefore, TE tunnels are visible to other devices in the forwarding
adjacency approach but not in the IGP shortcut approach.
You may assign a metric, either absolute or relative, to TE tunnels for the purpose of path calculation in
either approach. If it is absolute, the metric is directly used for path calculation. If it is relative, the cost of
the corresponding IGP path must be added to the metric before it can be used for path calculation.
Note that you need to enable OSPF or IS-IS on the tunnel interface of the MPLS TE tunnel before
configuring automatic route advertisement.
1) Configure IGP shortcut
Use the command...
system-view
ip route-static dest-address
{ mask | mask-length }
interface-type interface-number
[ gateway-address ] |
vpn-instance
d-vpn-instance-name
gateway-address }
[ preference preference-value ]
[ tag tag-value ] [ description
description-text ]
1-30
Remarks
––
Required