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  • Mixed WAN network

    We have 4 sites all of which utilize different ISP Providers. i have a full mesh VPN between all the sites. At one site the local LEC is only cable and so VPN to that site is the only option. The other site has a contractual obligation for the next 2 years and so the same problem. Luckily those sites arent our call centers. The other 2 sites utilize the phones extensively and I have wrangled for a PTP between the two sites from another company in addition to our present ISP for internet

    I will need the network to be smart enough to know that when calling between Site 1 and 2 to use the PTP gateway and between Site 1 and 3,4 or Site 2 and 3,4 to use the VPN gateway.

    My thinking is this;

    Site 1 - which will include the Shoretel Servers and includes our PRI will have a Layer 3 switch so that I can setup a different VLAN for the phones/servers and they will be able to route tagged traffic to the appropriate VLAN whether it is coming from the VPN gateway or the PTP Gateway.

    Site 2 - which is the other call entensive location all the phones will be on a seperate VLAN and thru DHCP options will route to the PTP gateway to Site 1 where the servers are located.

    Site 3,4 - All phone traffic will route thru the existing VPN to Site 1 where the layer 3 switch will route to the VLAN that the Shoretel Equipment resides.
    I understand that there may quality issues over the VPN but they dont use the phones that much and we have analog backup just in case (not ideal but we play with the cards we are dealt).

    I am putting this out there for any suggestions or reccomendations

    Thanks In Advance

  • #2
    This will be driven by your routing policy (and not Shoretel site design).

    What type of routers and/or firewalls do you have between the locations? You can actually accomplish this via policy based routing and/or source based routing.

    Likewise, you can use weighting/preference on your routes to create diverse paths. The specific design will be dictated by the capability of equipment and the exact architecture of your network.

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