New and Changed Information

Table 1 New and Changed Features

Feature

Description

ASR 903 RSP1 Module

ASR 903 RSP2 Module ASR 902

Where Documented

DHCP Option 82

When the DHCP option-82 feature is enabled, a subscriber device is identified by the port through which it connects to the network in addition to its MAC address.

Cisco IOS XE Release 3.7S

Cisco IOS XE Release 3.13S

Cisco IOS XE Release 3.12S

Option-82 Data Insertion

Enabling DHCP Snooping and Option 82

DHCP Snooping

This feature provides network security by filtering untrusted DHCP messages and by building and maintaining a DHCP snooping binding database.

Cisco IOS XE Release 3.7S

Cisco IOS XE Release 3.13S

Cisco IOS XE Release 3.12S

DHCP Snooping

Enabling DHCP Snooping and Option 82

Dynamic ARP Inspection (DAI)

Dynamic ARP inspection determines the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a trusted database, the DHCP snooping binding database.

Cisco IOS XE Release 3.7S

Cisco IOS XE Release 3.13S

Cisco IOS XE Release 3.12S

Dynamic ARP Inspection

Configuring Dynamic ARP Inspection

DHCPv6 Relay Agent notification for Prefix Delegation

DHCPv6 Relay chaining for Prefix Delegation

A Dynamic Host Configuration Protocol for IPv6 (DHCPv6) relay agent, which may reside on the client's link, is used to relay messages between the client and the server.

Cisco IOS XE Release 3.7S

Cisco IOS XE Release 3.13S

Cisco IOS XE Release 3.12S

DHCP Relay Agent

Configuring the DHCP Relay Agent

DHCP v6 Server

DHCP v6 Client

Support for DHCP Server and Client on IPv6

NA

Cisco IOS XE Release 3.15S

NA

How to Implement DHCP for IPv6