IP500 some phones boot, some do not

[havel3]

@zakabog, sorry I missed that but isn't is easier to look in System Status, it holds all the info on one screen.
MAC addresses are registered and distributed like IP Addresses so you can do a MAC lookup on the internet, the first three bytes represents the vendor part: http://www.adminsub.net/mac-address-finder/avaya

You also can do a search on 001b only, then you get the full list of vendors, Avaya owns 001B4Fxxxxxx

[claud4]

If there is no VLAN , and there is a firewall ( specially Sonicwall ) , we have faced various DHCP problems . In such situation you better you try with static IPs on phones , or create VLANs .

[havel3]

We aquired a company were all installs are like this problem one and I am in the process in migrating them to use VLANs&QoS with a single DHCP server.
Although they seem to work well with a dual DHCP it is just against my IT knowledge.
If you have two presentations at the same time you use separate rooms for them and you don't put them together in a single room.

[thiel2]

When you create a VLAN for voice, you put the option 176 and 242 strings into the DHCP server for the Data network. The phones request an address from the DATA network, which tells them which VLAN to switch to, and the address of the Call Server (IP Office) and the File Server (PC running Manager/IP Office/custom file server). The phone reboots, knows which VLAN to switch to, and again asks for an IP address, but this time the IP Office (which is connected to a port with its PVID set to the Voice network) responds with an address. The phone then requests its setting files, and boots up.