3Com S7906E - Switch, Руководство по настройке

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Configuration Procedures
Configuring traffic forwarding involves these tasks:
z
Forwarding traffic along MPLS TE tunnels using static routes
z
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… Use the command... Remarks
Enter system view
system-view
––
Create a static route for
forwarding traffic along an
MPLS TE tunnel
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
]
Required
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The
interface-type
argument in the
ip route-static
command must be tunnel. In addition, the
preference value must be set.
z
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