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ATM Switch Router Software Configuration Guide
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Chapter16 Configuring Tag Switching and MPLS
MPLS VPNs
Note The enhanced ATM router module provides efficient MPLS processing for four Fast Ethernet int erfaces.
Network Configuration Example
Figure 16-8 is an example of an MPLS VPN using ATM switch routers.
Figure16-8 MPLS VPN Example Network
Figure 16-8 shows a VPN using the following routers and ATM switch routers:
75k-CE1 and 75k-CE2 are the customer edge devices.
8540-ATM-PE1 and 8540-ATM-PE2 are the provider edge devices connecting the customer devices.
8540-ATM-P is the provider backbone device.
The autonomous system numbers are configured as follows:
75k-CE1 is in autonomous system number 104
75k-CE2 is in autonomous system number 105
8540-ATM-PE1 and 8540-ATM-PE2 are configured in autonomous system number 100
Note For this example LDP and IP CEF are running.

75k-CE1 Configuration

The configuration of router 75k-CE1, follows:
!
interface FastEthernet2/0
ip address 12.0.0.1 255.0.0.0
full-duplex
end
!
VPN 1
75k-CE1
VPN 1
75k-CE2
8540-ATM-PE1
lo0 - 22.0.0.1
ATM 1 1/0/1
8540-ATM-P
lo0 - 23.0.0.1
Fast 2/0
12.0.0.1
Fast 4/0
7.0.0.2
Fast 0/0/0
12.0.0.2
Fast 9/0/1
7.0.0.1
ATM 12/0/0
ATM 12/0/2
8540-ATM-PE2
lo0 - 24.0.0.1
ATM 12/0/2
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