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Configuring 3G Wireless WAN on Modular and Fixed ISRs (HWIC-3G-GSM, HWIC-3G-HSPA, PCEX-3G-HSPA-x)

3gCisco Integrated Services Routers are branch routers which support the new paradigms of network traffic delivery in the cloud and on the move. They provide Internet connectivity to teleworkers, and minor sites supporting less than 20 users. They also support bridging and routing between the LAN and the WAN whilst providing many advanced features such as antivirus protection.


The Third Generation (3G) Wireless High-Speed WAN Interface Card (HWIC) is a multiband, multiservice WAN card for use over WCDMA Radio Access Networks (RAN).


Both the fixed and the modular 3G routers can be used as the primary WAN connectivity and as a backup for critical applications which require a fallback service. 3G WAN is supported on the following modular Cisco ISRs: 800, 1841, 1861, 2800 series, 3800 series, 1900, 2900 and 3900.


One of the first actions required will be to configure a new 3G HWIC data profile.


To configure your 3G HWIC data profile, you will need the following information from your service provider:


Username (if required by your carrier)


Password (if required by your carrier)


Access Point Name (APN)


Once obtained, we can begin to set up the 3G features on the equipment itself by following these procedures:




  1. Data Account Provisioning

  2. Data Call Setup

  3. Voice Initiated Data Callback or Remote Dial-in (Optional)


In order to provision our data account we must have first obtained the key information from the service provider. The next priority is to ensure that we have the necessary service availability and signal strength in order for the connection to work. We need to use the following commands to examine the services available on the 3G network at the location in question.

  1. show cellular network - This displays info about the carrier network.

  2. show cellular radio - This shows the signal strength. We are looking for RSSI of -90dBm for a steady and reliable connection.

  3. show cellular security - This shows SIM lock status and modem lock status.


Once we have determined that the conditions are favourable we can go ahead and set up a modem data profile. To examine the existing data profiles configured on the equipment use the command show cellular profile. 

Assuming the profile we need is not already created we will need to go ahead and create it. In order to do this we use the command cellular gsm profile create . The syntax required is as follows:

cellular <slot/wic/port> gsm profile create <profile number> <apn> <authentication> <username> <password>

for example

cellular 0/0/0 gsm profile create 1 vodafone.apn chap 3guser 3guserpass

The data profile parameters are as follows:

  • apn - Access Point Name - This must be obtained from the service provider

  • authentication - Usually chap or pap

  • username - provided by service provider

  • password - provided by service provider


Once the data profile is properly set we then look to set up the parameters for the correct operation of the data call.

Firstly it is necessary to configure the cellular interface. The steps in summary are as follows:

1. configure terminal


2. interface cellular <slot/wic/port>


3. encapsulation ppp


4. ppp chap hostname <host>


5. ppp chap password 0 <password>


6. asynchronous mode interactive


7. ip address negotiated


The authentication parameters used here must be the same as those configured under the earlier GSM profile.


Once this is configured we need only configure the dialer and the steps for doing this in summary are as follows:



1. configure terminal


2. interface cellular <slot/wic/port>


3. dialer in-band


4. dialer idle-timeout <seconds>


5. dialer string <string>


6. dialer group <number>


7. exit


8. dialer-list <dialer-group> protocol <protocol-name> {permit | deny | list <access-list-number> | access-group}>


9. ip access-list<access list number>permit <ip source address>


10. line <slot/wic/port>


11. script dialer <regexp>


12. exit


13. chat-script <script name> "" "ATDT*98*<profile number>#" TIMEOUT <timeout value> CONNECT


14. interface cellular <slot/wic/port>


So that should be it. Assuming the router is properly configured elsewhere, the traffic should begin to flow using the 3G interface and everything should be working just fine. Of course sometimes things dont work out quite so smoothly and I will publish a post soon detailing the steps needed to troubleshoot these types of connections when they dont work as planned.


I hope this summary is useful and would appreciate your comments using the form provided below.

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Evening Slant

20131121-163715.jpg

A beautiful late November evening in the hills of East Ayrshire
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The North wind doth blow

The North wind doth blow and we shall have snow,
And what will poor robin do then, poor thing?
He'll sit in a barn and keep himself warm
and hide his head under his wing, poor thing.

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Economies of scale

We all know what's supposed to happen in the global economy: we get more of everything: more stuff manufactured, more coal dug up and burned, more "aggregate demand" i.e. insatiable desire for more of everything, more innovation, more wealth, more money printed, more debt taken on to buy more stuff and more education, more tourists occupying more beaches sipping more drinks, more shopping malls built, more airports expanded, more jobs created, more taxes collected-- more "growth" of everything, in every way and every day.

Beneath this expansive more-of-everything splendour, the power structure is supposed to remain unchanged: a small political-financial Elite holds all the reigns of power, a manufacturing-consent propaganda machine (a.k.a. mainstream media) persuades the masses all is well, wealth continues to accumulate in the top 1/10th of 1%, money is printed/created and distributed to the State-financial partnership's thiefdoms and cartels, moderate inflation eats away at the value of wages but makes debt cheaper to service, and the Upper Caste of technocrats continue their well-paid enabling of the Aristocracy's dominance.

The dream of tens of millions of young people is to join the Upper Caste of lackeys, factotums, toadies and apparatchiks serving the Aristocracy's cartels and thiefdoms.

In sum, the pie of wealth is supposed to expand so fast that the 10% left for the bottom 90% will be enough to satisfy their high expectations of endlessly rising prosperity.

That is Baseline Scenario #1: the Status Quo remains as it is, unchanged. This is what's supposed to happen as a result of central bank money-printing and central government borrowing and spending: the Status Quo of endless growth ruled by an Elite will continue on the same trendline it has traced since 1946: more growth, more financialisation, more concentration of wealth and political power, more technological innovation, and so on.

Baseline Scenario #2 is the centre cannot hold, and the Status Quo devolves.Those living through Scenario #2 will not notice any sudden changes; financial, political and geopolitical crises become the background noise to daily life.

The changes will be gradual and incremental: things will stop working as well, the homeless population will increase, shops will close, government offices will shorten their hours of operation, streets will remain unrepaired, hours will be cut, benefits will be trimmed, stadiums will no longer be filled during sporting events or musical extravaganzas.

There will be less of everything, not more, and a gradual but steady erosion of all "growth" baselines: fewer jobs, lower wages, fewer taxes collected, less profits, fewer retail outlets.

Faced with a shrinking pie to plunder and skim, the Aristocracy and its Upper Caste of technocrats will be forced to increase their share of the dwindling national surplus. Taxes and junk fees will rise, squeezing legitimate small enterprises into the informal economy, and the gulf between the Aristocracy/technocrat Upper Caste and the bottom 90% will widen: this can be characterized as the "third-worldization" of developed economies.

The disposable income of the top 10% will continue to rise, enabling them to retreat to the security of gated communities and luxury urban highrises, just like in Third-World megalopolises, while the gradual impoverishment of the bottom 90% erodes life outside the protected circles of the Elites and their well-paid worker-bees.

Anger and frustration rise, but food stamps, unemployment and transfer payments privatize the social mood: people are paid to stay home and watch TV or otherwise amuse themselves in political isolation. Nothing is sharp enough or drastic enough to spark a politically meaningful response. As long as the bread and circuses are ample, the masses are content to "get the best of what's still around" and go about their business without threatening the top 10%'s dominance of the national surplus.

Baseline Scenario #3 is something breaks: perhaps the trigger is a global credit event or a war, or perhaps it is the price of oil spiking on some disruption. The basic dynamic is this: increasingly fragile systems are increasingly vulnerable to sudden disruption and breakdown. On the surface, everything looks secure, until some event unleashes a cascade of unintended consequences.

The ultimate driver of Baseline Scenario #3 is diminishing returns: the political-financial Elite will respond as it did in 2008, by printing money to bail out banks and private cartels, by reassuring the masses via the propaganda mills, and so on, but these responses will have lost their initial effectiveness: the saturation of debt and propaganda will have reached 100%.

Printing more money and spewing more reassuring propaganda will no longer damp down the crisis. Rather, the failure of these Status Quo responses will unleash an even more destabilizing crisis.
Baseline Scenario #3 will result when one of a network of highly interconnected systems breaks down, and all the other systems fall in a domino-like cascade of instability.

The key dynamic in Baseline Scenario #3 is the standard-issue official responses (print more money and issue more reassuring propaganda) will fail to stem the destabilisation, and this failure will unleash an even larger wave of instability and breakdown.

Order will eventually be restored, but at a much lower level of wealth and prosperity. Baseline Scenario #3 will be replaced by Baseline Scenario #2--another period of erosion--until structural changes are allowed to reshape the political and financial landscape of power and wealth.
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Time

That part of your psyche,of your very soul, that stares at you inches from your face and yet you can never ever touch again, is your own past.
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