Again, Nortel IP phone and the DHCP auto config challenge.

[Hebegb]

OK, I have reviewed the previous threads and have gotten a few good tips that I will try however I have not seen the set up that we have so thought I would try this as well. Newbie here so bear with me and I hope I give all pertinent info.

HW:
Nortel CS1k w rls 5.5 s/w
Cisco 45XX series switch, POE blades w/12.X s/w
Nortel i2004 phones w/0604DCN f/w
INFOBLOX DHCP server ( this is the area that I cant seem to find any real info on, all the threads here and elsewhere seem to mention Windows 2003 or NT or other DHCP servers, no threads on INFOBLOX)

SW:
On the Cisco ports
All the basics plus
VLAN XX native
VLAN XXX VOIP

On the DHCP scope
Option 128 w Nortel-i2004-A and the IP string necessary. I have triple check the syntax and pretty sure it's good
Option 191 with VLAN-A:XXX.
We also added Options 144 but understand this is the same as 191. Some Nortel doc's suggest adding 251 and 43, but my research does not show this as mandated for this to work. I also do not see these mentioned here anywhere.

We have the phones set up for:
DHCP = FULL
LLDP = No
802.1 = Y
VOICE VLAN = Y
VLAN CONFIG = auto
All else is default values.

Everytime we boot the phone it comes up on the native vlan. A PC will work behind the phone but the phone will not boot up on the voice vlan. I have tried every phone config I can so feel it is the scope or the Cisco switch config somewhere.
Does anyone have an INFOBLOX scope config that works with a 2004 phone? Can anyone advise on what to check next. I know I am close but just cant seem to nail this thing down.

Thanks in advance

[Michael McNamara]

You Cisco switch configuration and IP phone configuration look good to me.

In your data VLAN DHCP scope try only having DHCP Option 191 defined.
In your voice VLAN DHCP scope try only having DHCP Option 128 defined.

This is how I use to do it when I used DHCP to assign the voice VLAN. I now use LLDP-MED/802.1ab in stead of DHCP.

Please let us know how you make out.

[tbigby]

Only note I have is that our 1110, 1120E, and 1140E phones need to have an option set to use the VLAN from DHCP before they will look at option 191. We're running an old firmware version though (version C4D).

On the 1110 phones, it looks like:

- DHCP: 0 - Full
...
- Voice 802.1Q: 1 - Yes
- Voice VLAN: 1 - Yes
- VLAN Cfg: 0 - Auto
     - LLDP MED: 0 - No
     - LLDP VLAN: 0 - No
     - DHCP: 1 - Yes
...
- Data 802.1Q: 0 - No
- PC Untag All: 1 - Yes
...

I'm sure this will have changed in the new firmware, but this is what works for us. As soon as 'VLAN Cfg' is set to Auto, the 3 sub-options show up and that DHCP needs to be on.

Hope this helps!

[Hebegb]

Mike, Thanks a bunch. It was the native VALN needing the 191 option on it. Once we set that the set rejects the native as a nomral boot function and then the Native offers the voice VLAN and VIOLA!!!! An actual working IP phone.

Note to all: I also installed some 1140e's and found that if you boot the pnone right out of the box, you do not need to set anything......except of course the TN and Node ID. pretty cool huh.....

[Michael McNamara]

Happy to hear that you were successful.

Cheers!

[fizal]

Hi,

Can you please share the dhcp string to configure nortel 1120 ip phones, my mail newbielink:mailto:fizal.f@rediffmail.com [nonactive]

Only note I have is that our 1110, 1120E, and 1140E phones need to have an option set to use the VLAN from DHCP before they will look at option 191. We're running an old firmware version though (version C4D).

On the 1110 phones, it looks like:

- DHCP: 0 - Full
...
- Voice 802.1Q: 1 - Yes
- Voice VLAN: 1 - Yes
- VLAN Cfg: 0 - Auto
     - LLDP MED: 0 - No
     - LLDP VLAN: 0 - No
     - DHCP: 1 - Yes
...
- Data 802.1Q: 0 - No
- PC Untag All: 1 - Yes
...

I'm sure this will have changed in the new firmware, but this is what works for us. As soon as 'VLAN Cfg' is set to Auto, the 3 sub-options show up and that DHCP needs to be on.

Hope this helps!

[fizal]

Can you please share the dhcp string to configure nortel 1120 ip phones, my mail newbielink:mailto:fizal.f@rediffmail.com [nonactive]

[tbigby]

Sure, our data VLAN has the following option to tell the phone which voice VLANs to try (we have up to 6 different voice VLANs that it could be, so it tries each one in order):

Option 191: "VLAN-A:2131+2132+2133+2134+2135+2136."

And for each voice VLAN, the following options tell the phone which server to connect to:

Option 128: "Nortel-i2004-A,10.1.1.1:4100,1,5;10.1.1.1:4100,1,5."
Option 191: "VLAN-A:2133."

Where 10.1.1.1 is the signalling server TLAN IP address. I use it twice, for both the primary and secondary addresses, as we only have the one signalling server. I also include option 191 with the appropriate VLAN number again, although I don't think that actually will do anything once the phone is already on the voice VLAN.

Also, it is important that all of the strings end in a dot.

Hope this is what you're after!

[Michael McNamara]

@tbitby - Please spread the love before giving it to this user again.

Thanks!

[tbigby]

Hi Michael, not sure I understand what you mean by that... is there a problem in posting this info?

[Michael McNamara]

I should have explained a little clearer... this site has a reputation mod that allows users to recognize people when they provide helpful answers. It's the little heart shaped symbol below your username on the left hand side of the site (you can also see it in my tagline). I clicked on the icon to add to your reputation and thank you for helping @fizal. Unfortunately I had already previously added to your reputation and the system won't let me add to it again until I recognize someone else. So I received the error, "Please spread the love before giving it to this user again."

So in short I was just thanking you for helping @fizal and acknowledging that we need more people to step up and help out.

Cheers!

[tbigby]

Ah, OK, thanks (thought I was being told off!)

[roelof53]

Hi Michael

On the LLDP/MED802.1ab. It works 100% on the ERS 4500 but what do you do on the 470. Not to use the DHCP server to asign the Voice VLan. I have the problem that I need to use the Internet Provider that we have on site DHCP Server to assign the Voice-VL and i want to scrap that. I have Ip 2002 1120 and 1110 IP phones on site.