Cisco 10000-2P2-2DC Software Guide - Page 109
Configuring DHCP Option 82 for RBE, Step 7
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Chapter 3 Configuring Remote Access to MPLS VPN Configuration Tasks for RA to MPLS VPN Command Purpose Step 7 Router(config-router-af)# redistribute protocol Redistributes routes from one routing domain into another routing domain. The protocol argument is the source protocol from which routes are being redistributed. It can be one of the following keywords: bgp, connected, egp, igrp, isis, ospf, static [ip], or rip. The connected keyword refers to routes that are established automatically by virtue of having enabled IP on an interface. Step 8 Router(config-router-af)# exit-address-family Exits address family configuration mode. Step 9 Router(config-router)# address-family vpnv4 [unicast] Enters address family configuration mode for configuring BGP routing sessions that use standard Virtual Private Network (VPN) Version 4 address prefixes. (Optional) The unicast keyword specifies VPN Version 4 unicast address prefixes. Step 10 Step 11 Router(config-router-af)# neighbor {ip-address | peer-group-name} activate Router(config-router-af)# neighbor {ip-address | peer-group-name} send-community [both] Activates route exchanges with the global BGP neighbors. Specifies that a community attribute should be sent to a BGP neighbor. The both keyword specifies that both community attributes should be sent. Step 12 Router(config-router-af)# exit-address-family Exits address family configuration mode. Step 13 Router(config-router)# exit Exits router configuration mode. Step 14 Router(config)# interface atm slot/port.subinterface-number point-to-point Creates a point-to-point ATM subinterface. Enters subinterface configuration mode. Step 15 Router(config-subif)# atm route-bridged ip Enables RBE on the subinterface. Configuring DHCP Option 82 for RBE To configure DHCP Option 82 support for RBE connections, enter the following commands beginning in global configuration mode: Step 1 Step 2 Command Router(config)# ip dhcp relay information option Router(config)# rbe nasip source_interface Purpose Enables the system to insert the DHCP relay agent information option in VPN suboptions. Specifies the IP address of an interface on the DHCP relay agent. This is the interface address that is sent to the DHCP server in the agent remote ID suboption. Example 3-7 enables DHCP option 82 support on the DHCP relay agent by using the ip dhcp relay information option command. The rbe nasip command configures the router to forward the IP address for Loopback0 to the DHCP server. The value (in hexadecimal) of the agent remote ID suboption is 010100000B0101814058320 and the value of each field is the following: • Port Type: 0x01 • Version: 0x01 OL-2226-23 Cisco 10000 Series Router Software Configuration Guide 3-25
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