Cisco 7246VXR - uBR Router User Manual

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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-05
Chapter 1 Overview of Cisco uBR7200 Series Software
Supported Software Features for the Cisco uBR7200 Series
Syntax Description
Defaults Disabled. When the dhcp option is specified, the leasetimer option is set by default to 60 minutes.
Command Modes Global configuration, Cable interface configuration or subinterface configuration
Note Configuring the cable source-verify command on the master interface of a bundle will
configure it for all of the slave interfaces in the bundle as well.
Command History
dhcp (Optional) Specifies that queries will be sent to verify unknown source IP
addresses in upstream data packets.
Note Do not enable the local DHCP server on the Cisco CMTS and
configure local DHCP address pools, using the ip dhcp pool
command, when using this option, because this prevents DHCP
address validation.
leasetimer value (Optional) Specifies the time, in minutes, for how often the router should
check its internal CPE database for IP addresses whose lease times have
expired. The valid range for value is 1 to 240 minutes, with a default of
60
minutes.
Note The leasetimer option takes effect only when the dhcp option is
also used on an interface. Also, this option is supported only on the
master interface and cannot be configured on subinterfaces.
Configuring it for a master interface automatically applies it to all
subinterfaces.
leasequery-filter
upstream query-num
interval
(Optional) Enables upstream lease queries to be defined on a per-SID basis
to reduce the chance of Denial of Service attacks.
• query-num— Number of leased queries per SID.
• interval—Size of timer window in seconds.
leasequery-filter
downstream
query-num interval
(Optional) Enables downstream lease queries to be defined on a per-SID
basis to reduce the chance of Denial of Service attacks.
• query-num— Number of leased queries for an unknown SID.
• interval—Size of timer window in seconds.
Release Modification
11.3 XA This command was introduced.
12.0(7)T The dhcp keyword was added.
12.0(10)SC, 12.1(2)EC Support was added for these trains.
12.1(3a)EC Subinterface support was added.
12.1(13)EC,
12.2(11)BC1
The leasetimer keyword was added.
12.2(15)BC1 The verification of CPE devices was changed when using the dhcp keyword.

Cisco 7246VXR - uBR Router Specifications

General

Brand	Cisco
Model	7246VXR - uBR Router
Category	Network Router
Language	English