VLAN splitted IT and Telephone configuration

Dear Community,

I'm currently setting up a configuration and this point the problem is that the telephones do not send their DHCP Request to the Router behind the Switch. I assume this might be a VLAN issue. I will be at the site tommorow and will do some fine tinkeling but I just wanted to get some feedback.

Okay now to our Setup:

The switches ports are devided into 2 seperate segments via VLANs.

Segment for IT Stuff:

 - Ports 1 to 36 are untagged VLAN 1

 - on the Port 1 there is the Router for Public Internet Connection.

 - all PCs work fine in this segment.

Segment for Telephones:

  - Ports 37 to 46 are untagged VLAN 3

  - on the Port 45 there is an other Router to the private Voice network from a Carrier

  - all the Telephones in this segment dont request IPs towards the Router on Port 45

as I said I assume it is a VLAN configuration issue

but now a diagram of the setup for those how didn't unterstand the text:

Okay okay. I know your guys are interested in my config.

I Upload the Entire Config and took out some sensitive data but all relevant information is untouched.

!Current Configuration:
!
!System Description "M4100-50G-POE+ ProSafe 48-port Gigabit L2+ Intelligent Edge PoE Managed Switch, 10.0.2.20, B1.0.1.1"
!System Software Version "10.0.2.20"
!System Up Time          "29 days 3 hrs 16 mins 52 secs"
!Additional Packages     QOS,IPv6 Management,Routing
!Current SNTP Synchronized Time: SNTP Last Attempt Status Is Not Successful
! 
vlan database
vlan 2-3
vlan name 2 "Auto VoIP" 
vlan name 3 "Static VoIP" 
vlan routing 1 1 
exit 
configure
sntp server "xxx.xxx.xxx.xxx"  
clock timezone 2 minutes 0 
time-range
ip domain name "SW-01"
no ip routing
username "admin" password grertw45t5we4ez35zzfhwetghwegrzerseghegsetghsetghseth level 15 encrypted
username "guest" password sdfgsdfgsdfg078sdg90d8g90d8f909ghydf9080ß8g0ßdf8g8dfg level 1 encrypted
voice vlan
line console
exit 
line telnet
exit 
line ssh
exit 
interface 0/47
addport lag 1
exit 
interface 0/48
addport lag 1
exit 
interface 0/49
addport lag 2
exit 
interface 0/50
addport lag 2
exit 
snmp-server sysname "SW-01"
snmp-server location "EDV-1 Podest"
snmp-server contact "xxx@xxx.de"
! 
auto-voip vlan 2
interface 0/1
exit 
interface 0/2
exit 
interface 0/3
exit 
interface 0/4
exit 
interface 0/5
exit 
interface 0/6
exit 
interface 0/7
exit 
interface 0/8
exit 
interface 0/9
exit 
interface 0/10
exit 
interface 0/11
exit 
interface 0/12
exit 
interface 0/13
exit 
interface 0/14
exit 
interface 0/15
exit 
interface 0/16
exit 
interface 0/17
exit 
interface 0/18
no auto-negotiate
speed 100 full-duplex
exit 
interface 0/19
no auto-negotiate
speed 10 half-duplex
exit 
interface 0/20
no auto-negotiate
speed 100 full-duplex
exit 
interface 0/21
exit 
interface 0/22
exit 
interface 0/23
exit 
interface 0/24
exit 
interface 0/25
no auto-negotiate
speed 100 full-duplex
no spanning-tree port mode
exit 
interface 0/26
no auto-negotiate
speed 100 full-duplex
no spanning-tree port mode
exit 
interface 0/27
no auto-negotiate
speed 100 full-duplex
no spanning-tree port mode
exit 
interface 0/28
exit 
interface 0/29
exit 
interface 0/30
exit 
interface 0/31
exit 
interface 0/32
exit 
interface 0/33
exit 
interface 0/34
exit 
interface 0/35
exit 
interface 0/36
exit 
interface 0/37
vlan participation auto 1
vlan participation include 3
exit 
interface 0/38
vlan participation auto 1
vlan participation include 3
exit 
interface 0/39
vlan participation auto 1
vlan participation include 3
exit 
interface 0/40
vlan participation auto 1
vlan participation include 3
exit 
interface 0/41
vlan participation auto 1
vlan participation include 3
exit 
interface 0/42
vlan participation auto 1
vlan participation include 3
exit 
interface 0/43
vlan participation auto 1
vlan participation include 3
exit 
interface 0/44
vlan participation auto 1
vlan participation include 3
exit 
interface 0/45
vlan participation auto 1
vlan participation include 3
exit 
interface 0/46
vlan participation auto 1
vlan participation include 3
exit 
interface 0/47
vlan participation auto 1
exit 
interface 0/48
vlan participation auto 1
exit 
interface 0/49
vlan participation auto 1
exit 
interface 0/50
vlan participation auto 1
exit 
interface lag 1 
auto-voip oui-based
description 'SW-01 mit SW-02'
vlan participation include 3
vlan tagging 1-3
exit 
interface lag 2 
auto-voip oui-based
description 'SW-01 mit SW-03'
vlan participation include 3
vlan tagging 1-3
exit 
interface lag 3 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 4 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 5 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 6 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 7 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 8 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 9 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 10 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 11 
vlan participation auto 1
vlan tagging 2
exit 
interface lag 12 
vlan participation auto 1
vlan tagging 2
exit 
interface vlan 1 
routing
ip address dhcp
exit 
exit 

I have to mention that I left the Auto-Voice Stuff with VLAN ID 2 enabled (maybe for later use) but currently I want to use VLAN3 with my own static and manually configured VLAN configuration, since I like to have things static and know what ports are in which VLAN

Ok I'm gonne press the Post-Button now and see what happens :-)

Thanks alot

Michael

AOS-Stahl (IT-Service)