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Page 211 / 382 Scroll up to view Page 206 - 210
Chapter 16 Quality of Service (QoS)
P-870HN-51b User’s Guide
211
The trTCM is based on the token bucket filter and has two token buckets
(Committed Burst Size (CBS) and Peak Burst Size (PBS)). Tokens are generated
and added into the two buckets at the CIR and PIR respectively.
All packets are evaluated against the PIR. If a packet exceeds the PIR it is marked
red. Otherwise it is evaluated against the CIR. If it exceeds the CIR then it is
marked yellow. Finally, if it is below the CIR then it is marked green.
The following shows how tokens work with incoming packets in trTCM:
•
A packet arrives. If the number of tokens in the PBS bucket is less than the size
of the packet (in bytes), the packet is marked red and may be dropped
regardless of the CBS bucket. No tokens are removed if the packet is dropped.
•
If the PBS bucket has enough tokens, the Device checks the CBS bucket. The
packet is marked green and can be transmitted if the number of tokens in the
CBS bucket is equal to or greater than the size of the packet (in bytes).
Otherwise, the packet is marked yellow.
Page 212 / 382
Chapter 16 Quality of Service (QoS)
P-870HN-51b User’s Guide
212
Page 213 / 382
P-870HN-51b User’s Guide
213
C
HAPTER
17
Dynamic DNS Setup
17.1
Overview
Dynamic DNS allows you to update your current dynamic IP address with one or
many dynamic DNS services so that anyone can contact you (in NetMeeting, CU-
SeeMe, etc.). You can also access your FTP server or Web site on your own
computer using a domain name (for instance myhost.dhs.org, where myhost is a
name of your choice) that will never change instead of using an IP address that
changes each time you reconnect. Your friends or relatives will always be able to
call you even if they don't know your IP address.
First of all, you need to have registered a dynamic DNS account with
www.dyndns.org. This is for people with a dynamic IP from their ISP or DHCP
server that would still like to have a domain name. The Dynamic DNS service
provider will give you a password or key.
17.1.1
What You Can Do in this Chapter
Use the
Dynamic DNS
screen (
Section 17.3 on page 214
) to enable DDNS and
configure the DDNS settings on the Device.
17.2
What You Need To Know
DYNDNS Wildcard
Enabling the wildcard feature for your host causes *.yourhost.dyndns.org to be
aliased to the same IP address as yourhost.dyndns.org. This feature is useful if
you want to be able to use, for example, www.yourhost.dyndns.org and still reach
your hostname.
If you have a private WAN IP address, then you cannot use Dynamic DNS.
Page 214 / 382
Chapter 17 Dynamic DNS Setup
P-870HN-51b User’s Guide
214
17.3
The Dynamic DNS Screen
To change your Device’s DDNS, click
Advanced > Dynamic DNS
. The screen
appears as shown.
Figure 107
Advanced > Dynamic DNS
The following table describes the fields in this screen.
Table 76
Advanced > Dynamic DNS
LABEL
DESCRIPTION
Active
Dynamic DNS
Select this to have the Device use DDNS.
Service
Provider
Select the name of your Dynamic DNS service provider.
Host Name
Type the domain name assigned to your Device by your Dynamic DNS
provider.
You can specify up to two host names in the field separated by a comma
(",").
Interface
Select the WAN interface to use for updating the IP address of the
domain name.
User Name
Type your user name.
Password
Type the password assigned to you.
Email
If you select
TZO
in the
Service Provider
field, enter the user name
you used to register for this service.
Key
If you select
TZO
in the
Service Provider
field, enter the password you
used to register for this service.
Active Update
Periodically
Select this to have the Device update the domain name on a regular
interval. Bear in mind that some Dynamic DNS service providers will not
appreciate the extra traffic and may block your host name.
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Chapter 17 Dynamic DNS Setup
P-870HN-51b User’s Guide
215
Update Time
If you selected
Active Update Periodically
, enter a number of days
and hours to set how often teh Device updates the domain name.
Apply
Click
Apply
to save your changes back to the Device.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Table 76
Advanced > Dynamic DNS (continued)
LABEL
DESCRIPTION

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