Configuring traffic forwarding, Configuring igp shortcut, Required.) – H3C Technologies H3C S6800 Series Switches User Manual
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Configuring traffic forwarding
Perform the tasks in this section on the ingress node of the MPLS TE tunnel.
Configuring static routing to direct traffic to an MPLS TE tunnel
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure a static route to
direct traffic to an MPLS TE
tunnel.
For information about static routing
commands, see Layer 3—IP
Routing Command Reference.
By default, no static route exists on
the device.
The interface specified in this
command must be an MPLS TE
tunnel interface in load sharing
mode.
Configuring automatic route advertisement to direct traffic to an
MPLS TE tunnel
You can use either IGP shortcut or forwarding adjacency to implement automatic route advertisement.
When you use IGP shortcut, you can specify a metric for the TE tunnel. If you assign an absolute metric,
the metric is directly used as the MPLS TE tunnel's metric. If you assign a relative metric, the MPLS TE
tunnel's metric is the assigned metric plus the IGP link metric.
Before configuring automatic route advertisement, perform the following tasks:
•
Enable OSPF or IS-IS on the tunnel interface to advertise the tunnel interface address to OSPF or
IS-IS.
•
Enable MPLS TE for an OSPF area or an IS-IS process by executing the mpls te enable command in
OSPF area view or IS-IS view.
Follow these restrictions and guidelines when you configure automatic route advertisement:
•
The destination address of the MPLS TE tunnel can be the LSR ID of the egress node or the primary
IP address of an interface on the egress node. H3C recommends configuring the destination
address of the MPLS TE tunnel as the LSR ID of the egress node.
•
If you configure the tunnel destination address as the primary IP address of an interface on the
egress node, you must enable MPLS TE, and configure OSPF or IS-IS on that interface. This makes
sure the primary IP address of the interface can be advertised to its peer.
•
The route to the tunnel interface address and the route to the tunnel destination must be in the same
OSPF area or at the same IS-IS level.
Configuring IGP shortcut
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter MPLS TE tunnel
interface view.
interface tunnel tunnel-number [ mode
mpls-te ]
N/A