H3C Technologies H3C S7500E Series Switches - Manual (Page 99)

3-17
z
The tunnel-name argument specifies the name of the MPLS TE tunnel carried over the static
CR-LSP.
z
The tunnel-name argument in the static-cr-lsp ingress command is case sensitive. Suppose you
create a tunnel interface with the interface tunnel 2 command. To specify it for the tunnel-name
in the static-cr-lsp ingress command, you must input its name in the form of Tunnel2. Otherwise,
your tunnel establishment attempt will fail. This restriction however does not apply to transit and
egress nodes.
z
The next hop address cannot be a local public address when configuring the static CR-LSP on
the ingress or a transit node.
Configuring MPLS TE Tunnel with Dynamic Signaling Protocol
Dynamic signaling protocol can adapt the path of a TE tunnel to network changes and implement
redundancy, FRR, and other advanced features.
The following describes how to create an MPLS TE tunnel with a dynamic signaling protocol:
z
Configure MPLS TE properties for links and advertise them through IGP TE extension to form a
TEDB.
z
Configure tunnel constraints.
z
Use the CSPF algorithm to calculate a preferred path based on the TEDB and tunnel constraints.
z
Establish the path by using the signaling protocol RSVP-TE or CR-LDP.
To form a TEDB, you must configure the IGP TE extension for the nodes on the network to send TE
LSAs. If the IGP TE extension is not configured, the CR-LSP is created based on IGP routing rather
than computed by CSPF.
Configuration Prerequisites
Before making the configuration, do the following:
z
Configure static routing or an IGP protocol to make sure that all LSRs are reachable.
z
Configure MPLS basic capabilities.
z
Configure MPLS TE basic capabilities.
Configuration Procedure
Complete the following tasks to configure an MPLS TE tunnel using a dynamic signaling protocol: