DHCP subnet with two different IP phones

[Bill Shirley]

On 9/28/2014 9:08 PM, Mike Diggins wrote:
> Hello,
>
> I have ISC DHCP V4 configured for my Nortel IP Phones. Soon we are adding Avaya 96xx series phones which require a 
> different DHCP configuration and I could use some assistance how to best handle that. Both types of phones will share 
> the same network and address range.
>
> My current configuration:
>
> option space Nortel;
> option Nortel.data code 128 = string;
>
> class "ipphones" {
>   match if substring(option vendor-class-identifier,0,14) = 4e:6f:72:74:65:6c:2d:69:32:30:30:34:2d:41;
> }
>
> shared-network Voice1 {
>   subnet 172.25.5.0 netmask 255.255.255.0 {
>     option routers 172.25.5.5;
>     option broadcast-address 172.25.5.255;
>     option subnet-mask 255.255.255.0;
>     allow unknown-clients;
>     default-lease-time 86400;
>     max-lease-time 86400;
>     pool {
>       vendor-option-space Nortel;
>       option Nortel.data "Nortel-i2004-A,172.25.10.203:4100,1,5;172.25.10.203:4100,1,5;172.25.47.22:5000.";
>       range 172.25.5.128 172.25.5.254;
>       allow members of "ipphones";
>     }
>   }
> }
>
> I want to add the following new class and options for the 96xx series phones but I'm not sure how best to merge the 
> two? Do I add the Avaya option statement into the subnet pool declaration above or move the Nortel option statement 
> out of the pool declaration and into the class "iphones". I want DHCP to respond with only the correct option matched 
> to the phone.
>
> option space AVAYA_PHONE;
>     option AVAYA_PHONE.242 code 242 = text; #Used by 96xx and newer hardware
>
> class "avaya-phones" {
>     match if substring (option vendor-class-identifier, 0, 13) = "ccp.avaya.com" ;
>     option AVAYA_PHONE.242 
> "MCIPADD=172.25.43.18,172.25.43.19,MCPORT=1719,TLSSRVR=172.25.43.80,HTTPSRVR=172.25.43.80,DIR=sip,TLSDIR=sip,HTTPDIR=sip"
> }
>
>
> -Mike
>
>
> _______________________________________________
> dhcp-users mailing list
> dhcp-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users

My suggestion:

option space Nortel;
option Nortel.data code 128 = string;

option space AVAYA_PHONE;
option AVAYA_PHONE.242 code 242 = text; #Used by 96xx and newer hardware

#class "ipphones" {
#  match if substring(option vendor-class-identifier,0,14) = 4e:6f:72:74:65:6c:2d:69:32:30:30:34:2d:41;
#}

# lookup Nortel phone MAC address prefix (xx:xx:xx):
# http://pbxbook.com/voip/ntmacs.html
class "nortel-phones" {
     match if substring(hardware, 1,3) = xx:xx:xx;
# if multiple MAC prefixes use:
#    match if (
#        substring(hardware, 1,3) = xx:xx:xx
#        or substring(hardware, 1,3) = yy:yy:yy
#    );
     vendor-option-space Nortel;
     option Nortel.data "Nortel-i2004-A,172.25.10.203:4100,1,5;172.25.10.203:4100,1,5;172.25.47.22:5000.";
# examples of other stuff:
     default-lease-time     7200;   # 2 hours
     ddns-domainname        "phone.example.com";
     option domain-name    "phone.example.com";
}

class "avaya-phones" {
     match if substring (option vendor-class-identifier, 0, 13) = "ccp.avaya.com" ;
     vendor-option-space AVAYA_PHONE;
     option AVAYA_PHONE.242 
"MCIPADD=172.25.43.18,172.25.43.19,MCPORT=1719,TLSSRVR=172.25.43.80,HTTPSRVR=172.25.43.80,DIR=sip,TLSDIR=sip,HTTPDIR=sip"
}


shared-network Voice1 {
   subnet 172.25.5.0 netmask 255.255.255.0 {
     option routers 172.25.5.5;
     option broadcast-address 172.25.5.255;
     option subnet-mask 255.255.255.0;
     allow unknown-clients;
     default-lease-time 86400;
     max-lease-time 86400;
     pool {
       range 172.25.5.128 172.25.5.254;
       allow members of "nortel-phones";
       allow members of "avaya-phones";
     }
   }
}


Hope this helps,
Bill

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/dhcp-users/attachments/20140929/1be471de/attachment.html>