
Implementing MPLS VPNs over IP Tunnels on Cisco IOS XR Software
How to Configure MPLS VPNs over IP Tunnels
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 | Command or Action | Purpose | 
| Step 3 | 
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| maximum path ipv4  | Enters the maximum number of static ipv4 paths that can be | |
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 | configured. | 
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 | Example: | 
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 | RP/0/RP0/CPU0:router  | 
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 | path ipv4  | 
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| Step 4 | 
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| maximum path ipv6  | Enters the maximum number of static ipv6 paths that can be | |
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 | configured. | 
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 | Example: | 
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 | path ipv6  | 
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| Step 5 | 
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| end | Saves configuration changes. | |
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 | or | • When you issue the end command, the system prompts | 
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 | commit | you to commit changes: | 
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 | Uncommitted changes found, commit them before | 
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 | Example: | exiting(yes/no/cancel)? | 
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 | [cancel]: | |
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 | or | – Entering yes saves configuration changes to the | 
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 | running configuration file, exits the configuration | |
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 | session, and returns the router to EXEC mode. | 
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 | – Entering no exits the configuration session and | 
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 | returns the router to EXEC mode without | 
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 | committing the configuration changes. | 
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 | – Entering cancel leaves the router in the current | 
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 | configuration session without exiting or | 
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 | committing the configuration changes. | 
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 | • Use the commit command to save the configuration | 
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 | changes to the running configuration file and remain | 
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 | within the configuration session. | 
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Configuring an IPv4 Loopback Interface
The following task describes how to configure an IPv4 Loopback interface.
SUMMARY STEPS
1.configure
2.interface type 
3.ipv4 address 
4.end or commit
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 | Cisco IOS XR MPLS Configuration Guide | 
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