H3C Technologies H3C Intelligent Management Center - Manual (Page 209)

To configure CR-LSP backup:
1. Click Service > MPLS TE Manager > Protection Mng from the tabular navigation system on the top
of the IMC main page.
2. In the Tunnel Query section of the page, select MPLS TE Tunnel name, Tunnel State, or Protocol
from the Query Type list, specify the corresponding value in the Value field, and then click Query.
Tunnels matching this description appear in the Protected Tunnel List section of the page.
3. Find the tunnel that you want to configure CR-LSP backup for, and then click the CR-LSP Backup
Operation icon .
Usage scenario 4
A company has four offices, office A through office D, which are connected with one another through
networks. It is required to protect the link between office B and office C, so that data packets can be
switched to another path quickly when the link fails, and switched back to the original link after the
original link resumes.
Assume that the routers are reachable to each other after being configured with IS-IS or OSPF and are
properly configured with basic MPLS and MPLS TE capabilities, as shown in
Figure 79 :
Figure 79 Usage scenario 4
In this scenario, you should create the primary tunnel through a dynamic signaling protocol. The tunnel
path is Router A —> Router B —> Router C. In this tunnel, the link between Router B and Router C is to
transmit important service data, therefore required to be protected. You should also create the bypass
tunnel through a dynamic signaling protocol. The bypass tunnel path is Router B —> Router D —> Router
C. Once the link between Router B and Router C fails, the primary tunnel’s path will change to Router A
—> Router B —> Router D —> Router C.
• Router A—Device name is H3C-1; Device IP is 172.10.0.70; LSR ID address is 3.3.3.70; address of
VLAN 34 (VLAN-interface 34) is 2.2.4.167.
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