Nortel Networks Nortel Business Services Gateway BSGX4e User Manual

Page 25

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3 Wizard pages

Configuration process


The numbers in the previous table are bps (bits per second). You may have seen

large numbers abbreviated as Kbps (1,000 bps) or Mbps (1,000,000 bps).

The BSGX4e likely requires a change of values, given that this model is commonly used with DSL
and cable modems. Bandwidth for DSL and cable can vary widely with various location and
network factors. And, service providers may offer different bandwidth rates for different prices.

Compare the upstream and downstream default rates on this page to the bandwidth rates your
service provider quoted to you. If there are significant differences, use the quoted rates. If you use
the quoted rates, you may want to calculate a new value in the QoS Groups section, as explained

Fill in the page fields as follows.


Upstream QoS

Compare the Upstream QoS default value on the page to the upstream rate your service
provider quoted to you. If there is a significant differences, enter the quoted rate in the




QoS performs best with the most accurate upstream link rate value, so you may want to run
bandwidth speed tests to determine your actual rate. For the best results, perform the test
several times over different days and average the results. You can use the following popular
test sites.


Downstream QoS

Link Rate

– As with the upstream rate, compare the default value on the page to the

downstream rate quoted by your service provider. If there are significant differences, use the
quoted rates. The accuracy of the downstream link rate is not as critical as for the upstream


– Encapsulation is the network process of adding header information to data

packets for transporting and routing across the Internet. Encapsulation makes the packets
larger thereby consuming more bandwidth. The BSGX4e needs to know the encapsulation
type for its internal calculations involving bandwidth.
The encapsulation field does not have a default value. You must select the value that
matches the WAN selection from

Step 4



If you chose



Step 4

, select PPPoE from the drop-down list here.


If you chose

DHCP Client


Static IP


Step 4

, select ethernet here.