DHCP on vlan & Ipphone

[karlzre]

Hi everybody,

I have configured our BD8806 with 4 vlan.
here is the history:

en inline-power port all
conf default delete port all
cre vlan itp
con itp t 10
con itp add port 1:1-1:48
con itp add port 2:1-16
con itp add port 2:25-40
con itp ipad 10.9.8.3/24
cr vlan S3
con S3 t 20
con S3 add port 2:16-24
con S3 add port 2:17-24
con S3 add port 2:40-48
con S3 add port 2:41-48
con s3 ipad 192.168.5.3/24
cr vlan voice
con voice tag 100
con voice add port all t
con voice ipad 10.10.10.3/24
en ipf
en bootprelay
con bootprelay add 10.9.8.130
con iproute add default 10.9.8.5
con iproute add default 192.168.5.1
con inline-power budget 100 slot 1
con inline-power budget 100 slot 2

everyting working fine exepted in the vlan voice.
the dhcp server is in the vlan itp
In the vlan itp and the vlan s3 i get the correct DHCP address.

in the vlan voice i didn't get any dhcp address.
I use wireshark on the dhcp server and i saw that the server has send dhcp offert but the ipphone didn't get any ipadress.

( i have the same problem with a computer on a wireless access point which support multissid an vlan).

What did i missed in my config ?

Thx in advance


ACA IPTelephony
ACA IPOffice implement
ACS IPOffice implement

 

[rn4it]

Hi
I use the udp forwarding and have no problem with dhcp. There are some limitations to using UDPprofiles, so give them a read.

BD2:4 # sh udp-profile Wake
Name: Wake
Number of datagrams forwarded: 3
destination udp port: 67 Forward to IP: <IP of DHCP>
Applied to incoming traffic on vlans:
<user VLANs>

create udp-profile DHCP
configure udp-profile Wake add 67 ipaddress <ip of DHCP server>
configure vlan "VLAN to access DHCP server" udp-profile Wake

 

[karlzre]

Hi,

Thank you for your answer but this command is not recognise by the switch:

BD-8806.1 # cr udp-profile
^
%% Invalid input detected at '^' marker.

:s

ACA IPTelephony
ACA IPOffice implement
ACS IPOffice implement

 

[rn4it]

Sorry I think you need to enable udp-forwarding first,
en udp-forward

 

[karlzre]

Sorry, but thsi command is not recognise by the system.

I'm running Xos i think these commands are Xtremeware isn't it?

Thx

ACA IPTelephony
ACA IPOffice implement
ACS IPOffice implement

 

[rn4it]

Oh, sorry, here's a sample of our from an xos device. You need to create a policy. This is covered in the Xos guides.

entry one {
if match all {
destination-port 67 ;
} then {
destination-ipaddress <ip of dhcp server> ;
}
}
entry two {
if match all {
destination-port 67 ;
} then {
vlan "<vlan1>" ;
vlan "<vlan2>" ;
}
}
~

hope this helps

 

[OldZoomy]

If you only have one DHCP server you don't need to use a udp profile.

I believe your problem is that you added all your VoIP ports tagged.

Remove them and re-add them untagged and see if that helps.

 

[w33mhz]

On your DHCP server did you add the correct VLAN Tag? What I mean is the 176 option in the DHCP scope. I realize that it shouldn't be nessasary anymore but try it and see. You also need to be able to forward between the itp and voice vlan.

configure ipforwarding originated-packets dont-require-ipforwarding

 

[ExtremeTek]

Before I even make any suggestions. What software version are you running on your BD?

My recommendation, run 12.0.2.25 or 12.0.3.16

Both very stable for this type of environment. If you are running sub 11.6 it's time to seriously consider upgrading. Just a suggestion.

Also, you really need to remove the Voice VLAN tagged on the port connecting to the DHCP server. You are simply "asking for trouble" here. The only VLAN that should reside on the DHCP server switch port is the untagged data VLAN that it resides in (a.k.a. itp in you case). You can get into race conditions when you add the voice VLAN tagged on the port going to you DHCP servers.

Example, if DHCP is on port 1:1

config vlan voice delete port 1:1

See my post all about this problem up on the Avaya Users forum for technical details:

http://www.aucommunity.com/showthread.php?t=3251&highlight=dhcp+nak

Hope this helps.

Also, do your phones require any special DHCP option strings to boot up?