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Network Planning for Shoretel Integration

Posted on 2013-06-21
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Last Modified: 2013-07-24
We are installing a Voip solution and i'm confused what exactly is required in terms of getting the voice traffic to work reliably.

Concerns are around the type of switches used firstly.  Can someone confirm if layer 2 or 3 is required for the voice only?  Then i need to know details in order to connect the 2x sites together, taking into account that we do not have a dhcp server (microsoft one) @ our remote site.

Attached is our current network, along with additional components (not yet installed & configured)
They are:
SIP
10 links
VLAN 10 switches
ISDN2 on the v90 BRI's

We will dedicate switches for voice and data for redundancy.
I have been told we can prioritize the traffic on the firewall/router.  But reading in more detail this is also managed by the switch. COrrect?

Thanks
diagram1.bmp
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Question by:CHI-LTD
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getzjd earned 500 total points
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If you are going to run your shoretel phones on a separate vlan, then you will need at least 1 layer 3 switch and/or a router to handle the vlan routing.  You will also want to  use PoE switches.  We utilize Adtran and the phones just have a passthrough port so both phone and PC run off the same port set as trunk.

You can run DHCP on the Adtran switches, a router or similar, but regardless of your dhcp server you will need to add a dhcp option to the scope such as  option 156 ascii "ftpservers=xx.xxx.x.xxx country=1, language=1, layer2tagging=1, vlanid=xx.  If you do not want to implement a dhcp server at the remote site, you can always statically assign the phones, though I recommend against it as it can be a pain to manage all those static ip's

Is your connection between the two sites just a vpn over a broadband solution such as fiber/cable/dsl?  If so, you can prioritize traffic on the VPN, but you cannot guarantee the traffic because you are at the mercy of the internet.  Optimally, you would have a MPLS private network between the two sites.

While configuring QoS on your local switches is a best practice, most will not notice if you choose not to implement it.  It all depends on your network utilization.  For a standard small office environment where bandwidth is not highly utilized such as in an office that does video editing.  However, though you do enable, there is nothing guaranteeing your quality between sites.
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by:CHI-LTD
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Hi
Thanks for your input.
vlan'ing and routing is something i am lacking in knowledge and how to plan & deploy...

We will have 10mb LL between the 2x sites, same cisco router & firewall and with the same ISP.  THey have said they can prioritise the traffic.  I assume this is on the router?
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by:CHI-LTD
ID: 39270734
OK, i have done some reading....

So, for our 2x LANs, we have the following:

HQ:
172.19.10.4 is our data switch (currently no vlans, do we need a vlan for data if we deploy a vlan for voice)
172.19.10.5 is our voice switch (new switch, with new vlan 10 say with a vlan interface of 172.19.10.6, untag the ports directly connected for voice)
Configure DHCP boot options 156 or 157...

Remote Site:
192.168.1.10 is an unmanaged switch
192.168.1.11 is our new voice switch, again with vlan id 10, with a logical IP)
No DHCP server..

Will the above work and how then do we get the phones to boot @ remote site?  How do we get the 2x voice vlans to become part of the LAN?
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by:CHI-LTD
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Which model adtran switches are you using?
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by:getzjd
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We have several of each SG120/24, SG220t1a, SG50,  and SG90
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by:CHI-LTD
ID: 39317702
adtran not shoretel.?
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by:getzjd
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Adtran 1335p, 1534p are our most common models though we do have a few 1234P as well
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by:CHI-LTD
ID: 39329316
Going for the HP 2910 or 2920 poe switches, i think.  There are L3 lite not fully L3..

These ok?
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by:CHI-LTD
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getzd?
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by:getzjd
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Please have patience.  Remember, we are not compensated for the time we spend answering questions.   Only 1 day had gone by since you asked your initial question on 7/16.  

Typically Layer 3 lite switches offer all the same functions as layer 2 switches and layer 3 switches except they do not support routing protocols. In other words if you wanted to use OSPF or EIGRP to dynamically route, then you would not be able to use the layer 3 lite switches.   With a small network and only a few sites, there really should not be a problem managing a few static routes.
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by:CHI-LTD
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Do you know if OSPF or EIGRP is required for shoretel?
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by:getzjd
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No, you only need routing protocols if you wish to dynamically adjust your routes.  For example, if you had two sites with two separate connections to each site and your primary connection went down.  Routing protocols would automatically detect this, adjust the routes and adjust traffic to use the other connection.
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