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DHCP Server Probing
4036168 Rev B
239
4
Click
DHCP Server Probing
. The DHCP Server Probing screen opens.
5
Select
Enable
to enable DHCP server probing.
6
Enter the
Probing Interval
in seconds, or accept the default value if appropriate.
Note:
This parameter defines how often the residential gateway communicates
with the default gateway to see if it is still active. The default value is 60 seconds
(1 minute).
7
Enter the
Probing Reset Trigger
, or accept the default value if appropriate.
Note:
This parameter defines the consecutive number of times the default
gateway must fail to respond to probing before a new DHCP lease is requested.
the default value is 15.
8
Click
Save/Apply
to save your settings.
Page 262 / 272
Chapter 7
Advanced Configuration
240
4036168 Rev B
Internet Group Management Protocol
The IGMP screen allows you to configure the Internet Group Management Protocol
(IGMP) parameters. IGMP is a communications protocol that is used to manage the
membership of Internet Protocol multicast groups. Routers use IGMP to manage
multicasting. The IGMP messages are used to determine which host is part of which
multicast group.
Path
:
Advanced > IP Networking > IGMP
Enabling IGMP Snooping
To enable IGMP snooping, complete the following steps.
1
Check the
Enable IGMP snooping
check box.
2
Select
Standard mode
to flood unknown multicast traffic. Select
Blocking
to
discard unknown multicast traffic.
3
In the Query Interval field, enter the interval in seconds. The Query Interval is
the amount of time in seconds between IGMP Host Query messages sent by the
router.
4
In the Query Response Interval field, enter the interval in seconds. The Query
Response Interval is the maximum amount of time in seconds that the IGMP
router waits to receive a response to an IGMP Query message.
5
In the Query Version field, choose the version from the drop-down list.
Page 263 / 272
Internet Group Management Protocol
4036168 Rev B
241
6
In the Last member Query Interval field, enter the interval in seconds. It is the
amount of time in seconds that the IGMP router waits to receive a response to a
Group-Specific Query message.
7
In the Last member Query Count field, enter the value in numbers. It is the
number of Group-Specific Query messages sent upon receipt of a message
indicating a leave. (The default is 2.)
8
Click
Save/Reboot
to save your changes and reboot the system.
Page 264 / 272
Chapter 7
Advanced Configuration
242
4036168 Rev B
IPSec Settings
The IPSec Settings screen allows you to configure IP security settings for the
residential gateway.
Path
:
Advanced > IP Networking > IPSec
Adding an IPSec Connection
To add an IPSec connection, complete the following steps.
1
Click
Advanced
on the main screen.
2
Click
IP Networking.
The NAT screen opens.
3
Click
IPSec
.
The IPSec Settings screen opens.
Page 265 / 272
IPSec Settings
4036168 Rev B
243
4
Click
Add New Connection
. The IPSec Settings screen opens.
5
In the IPSec Connection Name field, enter the name of the connection.
6
In the Remote IPSec Gateway Address field, enter the gateway address for the
remote IPSec gateway.
7
In the Tunnel access from local IP addresses field, select Subnet or Single
Address.
8
In the IP Address for VPN, enter the IP address for the VPN connection.
9
In the IP Subnetmask field, enter the subnet mask for the VPN IP address.
10
In the Tunnel access from remote IP addresses field, select Subnet or Single
Address.
11
In the IP Address for VPN, enter the IP address for the VPN connection.
12
In the IP Subnetmask field, enter the subnet mask for the VPN IP address.
13
In the Key Exchange Method field, select Auto(IKE) or manual.
14
In the Authentication Method field, select Pre-Shared Key or Certificate (X.509).
15
Depending upon the authentication method that you selected, do one of the
following:
If you selected Pre-Shared Key, enter the name of the key in the Pre-Shared
Key field.
OR
If you selected Certificate (X.509), select a certificate from the drop-down list
of certificates in the Certificate field.

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