Configuring Carrier Supporting Carrier; Identifying The Carrier Supporting Carrier Topology - Cisco CRS Configuration Manual

Implementing MPLS Layer 3 VPNs
Example:
RP/0/RP0/CPU0:router(config-static-afi)# 10.10.10.10/32 10.9.9.9
Enters the address of the destination router (including IPv4 subnet mask).
Step 5 Use the commit or end command.
commit - Saves the configuration changes and remains within the configuration session.
end - Prompts user to take one of these actions:
• Yes - Saves configuration changes and exits the configuration session.
• No - Exits the configuration session without committing the configuration changes.
• Cancel - Remains in the configuration mode, without committing the configuration changes.

Configuring Carrier Supporting Carrier

Perform the tasks in this section to configure Carrier Supporting Carrier (CSC):

Identifying the Carrier Supporting Carrier Topology

Before you configure the MPLS VPN CSC with BGP, you must identify both the backbone and customer
carrier topology.
Note You can connect multiple CSC-CE routers to the same PE, or you can connect a single CSC-CE router
to multiple CSC-PEs using more than one CSC-CE interface to provide redundancy and multiple path
support in a CSC topology.
Perform this task to identify the carrier supporting carrier topology.
SUMMARY STEPS
1. Identify the type of customer carrier, ISP, or MPLS VPN service provider.
2. Identify the CE routers.
3. Identify the customer carrier core router configuration.
4. Identify the customer carrier edge (CSC-CE) routers.
5. Identify the backbone carrier router configuration.
DETAILED STEPS
Step 1 Identify the type of customer carrier, ISP, or MPLS VPN service provider.
Sets up requirements for configuration of carrier supporting carrier network.
Cisco IOS XR Virtual Private Network Configuration Guide for the Cisco CRS Router, Release 6.1.x
Configuring Carrier Supporting Carrier
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