H3C Technologies H3C S12500-X Series Switches - Manual (Page 58)

47
• Associated mode—In this mode, you establish a bidirectional MPLS TE tunnel by binding two
unidirectional CRLSPs in opposite directions. The two CRLSPs can be established in different modes
and use different paths. For example, one CRLSP is established statically and the other CRLSP is
established dynamically by RSVP-TE.
For more information about establishing MPLS TE tunnel through RSVP-TE, the Path message, and the Resv
message, see "Configuring RSVP."
Protocols and standards
• RFC 2702, Requirements for Traffic Engineering Over MPLS
• RFC 3564, Requirements for Support of Differentiated Service-aware MPLS Traffic Engineering
• RFC 4124, Protocol Extensions for Support of Diffserv-aware MPLS Traffic Engineering
• RFC 4125, Maximum Allocation Bandwidth Constraints Model for Diffserv-aware MPLS Traffic
Engineering
• RFC 4127, Russian Dolls Bandwidth Constraints Model for Diffserv-aware MPLS Traffic Engineering
• ITU-T Recommendation Y.1720, Protection switching for MPLS networks
MPLS TE configuration task list
To configure an MPLS TE tunnel to use a static CRLSP, complete the following tasks:
1. Enable MPLS TE on each node and interface that the MPLS TE tunnel traverses.
2. Create a tunnel interface on the ingress node of the MPLS TE tunnel, and specify the tunnel
destination address—the address of the egress node.
3. Create a static CRLSP on each node that the MPLS TE tunnel traverses.
For information about creating a static CRLSP, see "Configuring a static CRLSP."
4. On the ingress node of the MPLS TE tunnel, configure the tunnel interface to reference the created
static CRLSP.
5. On the ingress node of the MPLS TE tunnel, configure static routing or PBR to direct traffic to the
MPLS TE tunnel.
To configure an MPLS TE tunnel to use a CRLSP dynamically established by RSVP-TE, complete the
following tasks:
1. Enable MPLS TE and RSVP on each node and interface that the MPLS TE tunnel traverses.
For information about enabling RSVP, see "Configuring RSVP."
2. Create a tunnel interface on the ingress node of the MPLS TE tunnel, and specify the address of the
egress node as the tunnel destination address.
3. Configure an IGP on each node that the MPLS TE tunnel traverses.
4. On the ingress node of the MPLS TE tunnel, configure RSVP-TE to establish a CRLSP based on the
path calculated by IGP.
5. On the ingress node of the MPLS TE tunnel, configure static routing or PBR to direct traffic to the
MPLS TE tunnel.
You can also configure other MPLS TE functions such as bidirectional MPLS TE tunnel as needed.
To configure MPLS TE, perform the following tasks: