Cisco 300 Series User Manual

IPv6 First Hop Security
OL-32830-01 Command Line Interface Reference Guide 568
25
switchxxxxxx(config-dhcp-guard)# preference minimum 10
switchxxxxxx(config-dhcp-guard)# exit
25.62 router-preference
To enable verification of advertised Default Router Preference value in RA
messages within an IPv6 RA Guard policy, use the router-preference command in
RA Guard Policy Configuration mode. To return to the default, use the no form of
this command.
Syntax
router-preference [maximum {
value | disable}] [minimum { value | disable}]
no router-preference [maximum] [minimum]
Parameters
• maximum value —Specifies the maximum allowed Advertised Default
Router Preference value. The following values are acceptable: low, medium
and high (see RFC4191). A value of the high boundary must be equal to or
greater than a value of the low boundary.
• maximum disable—Disables verification of the high boundary of Advertised
Default Router Preference.
• minimum value —Specifies the minimum allowed Advertised Default Router
Preference value. The following values are acceptable: low, medium and
high (see RFC4191).
• minimum disable—Disables verification of the low boundary of Advertised
Default Router Preference.
Default Configuration
Policy attached to port or port channel: the value configured in the policy attached
to the VLAN.
Policy attached to VLAN: global configuration.
Command Mode
RA Guard Policy Configuration mode

Cisco 300 Series Specifications

General

Model	Cisco 300 Series
Category	Switch
Dimensions	Varies by model
Weight	Varies by model
Power over Ethernet (PoE)	Available on select models
Management	Web-based GUI, SNMP, CLI
VLANs	Up to 256
Security Features	ACLs, 802.1X, Port Security
Humidity	10% to 90% non-condensing
Ports	8, 16, 24, 48