Web Management Guide-R04

Table Of Contents
Chapter 12
| Security Measures
IPv6 Source Guard
– 394 –
traffic on that port, except for ND packets and DHCPv6 packets allowed by
DHCPv6 snooping.
Only IPv6 global unicast addresses are accepted for static bindings.
Parameters
These parameters are displayed:
Port – Port identifier (Range: 1-28)
Filter Type – Configures the switch to filter inbound traffic based on the
following options. (Default: Disabled)
Disabled – Disables IPv6 source guard filtering on the port.
SIP – Enables traffic filtering based on IPv6 global unicast source IPv6
addresses stored in the binding table.
SDP – Enables traffic filtering based on IPv6 source address prefixes stored
in the binding table.
Max Binding Entry – The maximum number of entries that can be bound to an
interface. (ACL Table: 1-16, default: 5; MAC Table: 1-1024, default: 1024)
This parameter sets the maximum number of IPv6 global unicast source
IPv6 address entries that can be mapped to an interface in the binding
table, including both dynamic entries discovered by ND snooping, DHCPv6
snooping (refer to the DHCPv6 Snooping commands in the CLI Reference
Guide), and static entries set by IPv6 Source Guard (see Configuring Static
Bindings for IPv6 Source Guard” on page 395).
IPv6 source guard maximum bindings must be set to a value higher than
DHCPv6 snooping maximum bindings and ND snooping maximum
bindings.
If IPv6 source guard, ND snooping, and DHCPv6 snooping are enabled on a
port, the dynamic bindings used by ND snooping, DHCPv6 snooping, and
IPv6 source guard static bindings cannot exceed the maximum allowed
bindings set by this parameter. In other words, no new entries will be
added to the IPv6 source guard binding table.
If IPv6 source guard is enabled on a port, and the maximum number of
allowed bindings is changed to a lower value, precedence is given to
deleting entries learned through DHCPv6 snooping, ND snooping, and
then manually configured IPv6 source guard static bindings, until the
number of entries in the binding table reaches the newly configured
maximum number of allowed bindings.
Web Interface
To set the IPv6 Source Guard filter for ports:
1. Click Security, IPv6 Source Guard, Port Configuration.