Lukol 50 tablet bottle $109.00 This tutorial is a continuation of the virtual voice lab series. Lukol 50 tablet bottle $109.00 Unfortunately, lukol 50 tablet bottle $109.00 the virtual voice lab has been a “work in progress” much longer than I had hoped it would be when I started it two years ago. Lukol 50 tablet bottle $109.00 In this tutorial, lukol 50 tablet bottle $109.00 you will add a new router to your GNS3 topology. Lukol 50 tablet bottle $109.00 It will connect it to the HQ, lukol 50 tablet bottle $109.00 BR1 and BR2 routers to simulate an Internet connection and the Public Switched Telephone Network (PSTN).

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Lukol 50 tablet bottle $109.00 There is one caveat to this PSTN simulation… GNS3/Dynamips is not capable of simulating traditional analog or digital circuits. Lukol 50 tablet bottle $109.00 We will be simulating an Internet Telephony Service provider (ITSP). Lukol 50 tablet bottle $109.00 ITSPs have become increasingly popular in the past ~5 years. Lukol 50 tablet bottle $109.00 Basically, lukol 50 tablet bottle $109.00 the PSTN router will route incoming calls to the branch routers and received outgoing calls from the branch routers over a SIP or H323 trunk.

 

Lukol 50 tablet bottle $109.00 Placing the “PSTN” router in the topology and configuring IP addressing will simulate an Internet connection for the branches but it is just the first step.  The call routing will be accomplished using the Cisco Unified Border Element (CUBE … formerly IPIPGW) feature or H323 Gatekeeper in other tutorials. Lukol 50 tablet bottle $109.00 As a side note, lukol 50 tablet bottle $109.00 VPN’s and other technologies can be tested with the simulated Internet we created.

Lukol 50 tablet bottle $109.00  

Lukol 50 tablet bottle $109.00  

Lukol 50 tablet bottle $109.00  

Lukol 50 tablet bottle $109.00

Lukol 50 tablet bottle $109.00  

Lukol 50 tablet bottle $109.00 Here are the steps:

  1. Add a router to the GNS3 topology.
    You will need an IOS image on the router that supports CUBE, lukol 50 tablet bottle $109.00 Gatekeeper or both.
  2. Change the hostname e.g. Lukol 50 tablet bottle $109.00 “pstn_internet” (optional)
  3. Add an NM-16ESW module to the new router
    1. Right-Click on the new router and configure
    2. Click the ‘Slots’ tab
    3. Add an NM-16ESW module to the router

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  4. Connect the following interfaces to the existing branch routers
    • pstn_internet f0/0 -> Port 5 on the HQ Switch
    • pstn_internet f1/0 -> f0/1 on HQ Router
    • pstn_internet f1/1 -> f0/1 on BR1 Router
    • pstn_internet f1/2 -> f0/1 on BR2 Router

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  5. “pstn_internet” router config changes interface f0/0
    no shutdown
    description *** Internet ***
    ip address 10.10.10.253 255.255.255.0

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    Lukol 50 tablet bottle $109.00 interface f1/0
    no shutdown
    description *** HQ Internet ***
    ip address 12.34.56.1 255.255.255.252

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    Lukol 50 tablet bottle $109.00 interface f1/1
    no shutdown
    description *** BR1 Internet ***
    ip address 23.45.67.1 255.255.255.252

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    Lukol 50 tablet bottle $109.00 interface f1/2
    no shutdown
    description *** BR2 Internet ***
    ip address 34.56.78.1 255.255.255.252

    Lukol 50 tablet bottle $109.00 ip route 0.0.0.0 0.0.0.0 10.10.10.254

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  6. “HQ” Router config changes interface f0/1
    no shutdown
    description *** Internet ***
    ip address 12.34.56.2 255.255.255.252

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    Lukol 50 tablet bottle $109.00 ip route 0.0.0.0 0.0.0.0 12.34.56.1

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  7. “BR1” Router config changes interface f0/1
    no shutdown
    description *** Internet ***
    ip address 23.45.67.2 255.255.255.252

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    Lukol 50 tablet bottle $109.00 ip route 0.0.0.0 0.0.0.0 23.45.67.1

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  8. “BR2” Router config changes interface f0/1
    no shutdown
    description *** Internet ***
    ip address 34.56.78.2 255.255.255.252

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    Lukol 50 tablet bottle $109.00 ip route 0.0.0.0 0.0.0.0 34.56.78.1

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