User's Manual

Configuration Guide of XGS-5240-Series
58-1
Chapter 58 SAVI Configuration
58.1 Introduction to SAVI
SAVI (Source Address Validation Improvement) is a security authentication method t
hat provides the granularity level of the node source address. It gets the trust node inf
ormation (such as port, MAC address information), namely, anchor information by monit
oring the interaction process of the relative protocol packets (such as ND protocol, DH
CPv6 protocol) and using CPS (Control Packet Snooping) mechanism. After that, it bind
s the anchor information with the node source address and sends the corresponding filt
er rules, allow the packets which match the filter rules to pass only, so as to reach the
aim that check the validity of node source address.
SAVI function includes ND Snooping function, DHCPv6 Snooping function and RA
Snooping according to the protocol packet type. ND Snooping function is used to detec
t ND protocol packet, it sets IPv6 address binding obtained by nodes with the stateless
address configuration. DHCPv6 Snooping function is used to detect DHCPv6 protocol
packet, it sets IPv6 address binding obtained by nodes with the stateful address config
uration. RA Snooping function is used to avoid the lawless node sending the spurious
RA packet.
58.2 SAVI Configuration
SAVI configuration task list:
1. Enable or disable SAVI function
2. Enable or disable application scene function for SAVI
3. Configure SAVI binding function
4. Configure the global max-dad-delay for SAVI
5. Configure the global max-dad-prepare-delay for SAVI
6. Configure the global max-slaac-life for SAVI
7. Configure the lifetime period for SAVI bind-protect
8. Enable or disable SAVI prefix check function
9. Configure IPv6 address prefix for a link
10. Configure the filter entry number of IPv6 address
11. Configure the check mode for SAVI conflict binding
12. Enable or disable user authentication
13. Enable or disable DHCPv6 trust of port