How to setup multiple DHCP scopes and VLANS on a 3300

[bassphone]

I need help setting up multiple DHCP scopes and VLANS on a Mitel 3300 ICP running 5.0. I have a 3300ICP that provides service to 3 buildings and the network admin wants to use a seperate VLAN for each building's voice network.
What does the network admin need to program into the cisco routers & switches to make this work?

Here is what I have programmed into the 3300.
Host Name: Admin-ip
System IP Address: 10.100.31.2
Subnet Mask: 255.255.255.0
Gateway IP Address: 10.100.31.1
Layer 2 (L2) Switch IP Address: 10.100.31.4
E2T Card IP Address: 10.100.31.14 / 255.255.255.0


DHCP Range
Admin B 10.100.31.10-10.100.31.254 Voice Network (10.100.31.0)

Admin A 10.100.32.2-10.100.32.254 Voice network A (10.100.32.0)

FRC Voice Network 10.100.33.2-10.100.33.254 Voice Network C (10.100.33.0)


DHCP Subnets
Voice Network 10.100.31.0 255.255.255.0 VLAN 131

Voice network A 10.100.32.0 255.255.255.0 VLAN 132

Voice Network C 10.100.33.0 255.255.255.0 VLAN 133


DHCP Options

3 Router 10.100.31.1 IP Address Global 3

6 DNS Server 10.1.1.11, 10.1.1.50 IP Address Global 6

67 Boot File Name /sysro/E2T8260 ASCII String Global 67

125 Mitel id:ipphone.mitel.com;sw_tftp=10.100.31.2;call_srv=10.100.31.2;dscp=46 ASCII String Global 1027 125

128 TFTP Server 10.100.31.2 IP Address Global 128

129 Call Server 10.100.31.2 IP Address Global 129

130 IP Phone Identifier MITEL IP PHONE ASCII String Global 130

134 DSCP 46 Numeric Global 134

 

[sarond]

The network admin needs to ensure all routing is in place and then use IP helpers on each VLAN to point to your 3300 (10.100.31.2)
You will then need to change your DHCP scope options accordingly.
In the above you have set all scope options to Global, you will need to change the router for each scope as it will be different for each VLAN/Network.
Other Options should work as is as long as routing is working.

This will also depend on whether CDP is enabled on the switches as that will change things.

 

[LoopyLou]

You should be able to do what you need. Have setup 3300's with 10 seperate scopes before and they work fine. As sarond as pointed out you need to specify options for each subnet. Global means everyone gets the same thing and if you have 3 VLANs at a minimum each will need a seperate gateway ( router ) to get off that VLAN. When you create the options you will see that in additional to "Global" it will show all your subnets as possible settings. The TFTP server ( 3300 ) and RTC ( 3300 ) may be global but you still need seperate Option 125's becuase you will need to set the VLAN in each.

So you should have 3 of

Option 3 ( one for each of VLANs 131-133 )
Option 125 ( one for each of VLANs 131-133 )

You might want to delete option 6 the DNS server unless you need it becuase I have seen it cause 5330/5340 sets to not boot after upgrades.

Options 126-134 can stall global if you still need them because the are common to any VLAN

On the network side the question is wherther you are using CDP or LLDP to assign the phones the correct VLAN on boot. Assuming you are then you need the DHCP requests from the phones to be directed to the subnet where the 3300 is. This involves setting up DHCP helper or DHCP forwarding ( or whatever the right terminonlogy is for your layer 2/3 switch vendor ). This has to be done in the edges and core if I am not mistaken.

I'd tell you a UDP joke but I'm afraid you won't get it. TCP jokes are the best because you always get them.

 

[bassphone]

Thanks for the Help I have a follow up question. When I program the new opt 3 and 125 do I use the subnet or Range in the scope pull down menu?

 

[LoopyLou]

You need to use the range and create one option 3 and one option 125 for each range.

I'd tell you a UDP joke but I'm afraid you won't get it. TCP jokes are the best because you always get them.

 

[bassphone]

LoopyLou Many Thanks. My VAR has not been much help.

 

[sarond]

@LoopyLou

I'm sure there should be no problem using subnet as the scope either, well I haven't had any issues using it.

 

[LoopyLou]

Its just my verbage when I say subnet. I really mean the scope which is more of a term I have heard when dealing with Microsoft by what I mean is the range of IP addresses that the DHCP server will be handing out. You are correct in it may not be the entire subnet. I should really use the terminology from the 3300 which is range. So yes when creating the options select the appropriate range rather then selecting Global. Hope that is clear ( as mud right ).

I'd tell you a UDP joke but I'm afraid you won't get it. TCP jokes are the best because you always get them.

 

[sarond]

Maybe I'm not as clear as I should be
When you choose your scope from the drop down box you have either Global/Subnet/Range.
I normally choose 'Subnet' for the associated scope as it is rare to need 'range'.
I understand what your saying I just don't want the OP thinking he/she has to choose 'range' over 'subnet' or vice versa.

From what I understand and I could be completely wrong is that you can define a range based on 'Class ID' e.g. ipphone.mitel.com (So that Mitel IP Phones are given certain IP addresses). You could then define another range within the same scope/subnet for PC's etc... hence you could assign different options depending whether or not you are a phone or computer. Option 3 (Router/Gateway) would normally be a 'subnet' scope because it is common to both phones and data but it may not be. You could assign different gateways for different devices i.e phones based on their range rather than the subnet. e.g. Maybe public internet routes through a different gateway than phone traffic.
Now I am probably as clear as mud