H3C Technologies H3C S10500 Series Switches - Manual (Page 68)

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Enabling the MPLS function
Enable MPLS on all routers before you can configure other MPLS features.
Configuration prerequisites
Before you enable MPLS, complete the following tasks:
• Configure link layer protocols to ensure the connectivity at the link layer.
• Assign IP addresses to interfaces so that all neighboring nodes can reach each other at the network
layer.
• Configure static routes or an IGP protocol for the LSRs to communicate with each other.
Configuration procedure
Follow these steps to enable MPLS:
To do… Use the command… Remarks
Enter system view system-view —
Configure the MPLS LSR ID mpls lsr-id lsr-id
Required
Not configured by default
Enable MPLS globally and enter
MPLS view
mpls
Required
Not enabled by default
Return to system view quit —
Enter interface view
interface interface-type
interface-number
—
Enable MPLS for the interface mpls
Required
Not enabled by default
NOTE:
An MPLS LSR ID is in the format of an IP address and must be unique within an MPLS domain. H3C
recommends using the IP address of a loopback interface on an LSR as the MPLS LSR ID.
Configuring a static LSP
The principle of establishing a static LSP is that the outgoing label of an upstream LSR is the incoming
label of its downstream LSR.
Configuration prerequisites
Before you configure a static LSP, complete the following tasks:
• Determine the ingress LSR, transit LSRs, and egress LSR for the static LSP.
• Enable MPLS on all these LSRs.
• Ensure that the ingress LSR has a route to the FEC destination. This is not required on the transit LSRs
and egress LSR.