Cisco 10000-2P2-2DC Software Configuration Manual page 110

Configuration Tasks for RA to MPLS VPN
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Example 3-7
ip dhcp-server 172.16.1.2
!
ip dhcp relay information option
!
interface Loopback0
ip address 11.1.1.129 255.255.255.192
!
interface ATM4/0
no ip address
!
interface ATM4/0.1 point-to-point
ip unnumbered Loopback0
ip helper-address 172.16.1.2
atm route-bridged ip
pvc 88/800
!
interface Ethernet 5/1
ip address 172.16.1.1 255.255.0.0
!
router eigrp 100
network 10.0.0.0
network 172.16.0.0
!
rbe nasip Loopback0
Configuring DHCP Relay Support for MPLS VPN Suboptions
To configure DHCP relay support for MPLS VPN suboptions, enter the following commands beginning
in global configuration mode:
Command
Step 1
Router(config)# ip dhcp relay information
option vpn
Cisco 10000 Series Router Software Configuration Guide
3-26
Reserved: undefined
NAS IP address: 0x0B010181 (hexadecimal value of 11.1.1.129)
NAS Port
Interface (slot/module/port): 0x40 (The slot/module/port values are 01 00/0/000.)
–
VPI: 0x58 (hexadecimal value of 88)
–
VCI: 0x320 (hexadecimal value of 800)
–
Configuring Option 82 for RBE
encapsulation aal5snap
Chapter 3
Purpose
Enables the system to insert VPN suboptions into the DHCP relay
agent information option in forwarded BOOTREQUEST
messages to a DHCP server. Sets the gateway address to the
outgoing interface toward the DHCP server. The VPN suboptions
are also added to the BOOTP broadcast packets when the
command is configured.
Configuring Remote Access to MPLS VPN
OL-2226-23