Chapter 25 IP Source Guard
GS3700/XGS3700 Series User’s Guide
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25.14 IPv6 Snooping Policy Setup
Use this screen to dynamically create an IPv6 source guard binding table using a DHCPv6 snooping
policy. A DHCPv6 snooping policy lets the Switch sniff DHCPv6 packets sent from a DHCPv6 server
to a DHCPv6 client when it is assigning an IPv6 address. When a DHCPv6 client successfully gets a
valid IPv6 address, DHCPv6 snooping builds the binding table dynamically. To open this screen,
click Advanced Application > I P Source Guard > I Pv6 Snooping Policy Setup.
Note: If you do not select Protocol and Prefix Glean, then the Switch cannot perform
DHCPv6 snooping.
Figure 203 Advanced Application > IP Source Guard > IPv6 Snooping Policy Setup (Standalone
mode)
The following table describes the labels in this screen.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses
these changes if it is turned off or loses power, so use the Save link on the top navigation
panel to save your changes to the non-volatile m emory when you are done configuring.
Cancel Click this to reset the values in this screen to their last-saved values.
Table 138 Advanced Application > IP Source Guard > IPv6 Source Guard Port Setup (Standalone
mode)
LABEL DESCRIPTION
Table 139 Advanced Application > IP Source Guard > IPv6 Snooping Policy Setup (Standalone
mode)
LABEL DESCRIPTION
Name Enter a descriptive name for identification purposes for this IPv6 snooping policy.
Protocol Select DHCP to let the Switch sniff DHCPv6 packets sent from a DHCPv6 server to a
DHCPv6 client.
Prefix Glean Select this to learn the IPv6 prefix and length from DHCPv6 sniffed packets.
Limit Address
Count
This is the num ber of I Pv6 addresses and prefixes learned using the IPv6 snooping policy.
Note: The maximum limit address count is the maximum size of the IPv6 source guard
binding table. At the time of writing, it is 50 for the GS2210 Switch series. See the
product datasheet for the latest specifications.
Add Click this to create the IPv6 source guard policy or to update an existing one.
Cancel Click this to reset the values above or if not applicable, to clear the fields above.
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