11-06-2007 09:50 PM - edited 03-03-2019 05:42 AM
Our issue is a bit complicated. We are implementing a ShoreTel VoIP phone system which supports VLAN tagging to separate Voice and Data traffic. At this location, we have a Cisco Router (currently obtaining model #) which is connected through a newly configured dot1Q trunk to an HP Switch (currently obtaining model # also). Below you will find configs for both devices (scrubbed for sensitive info).
In order to achieve Voice/Data separation, 2 DHCP scopes have been defined. By using DHCP option 156 and configuring this option on both scopes, the IP phones initially boot into the native (untagged for HP) VLAN and obtain a configuration as well as this option. This option specifies tagging 'on' and a VLAN to tag Voice traffic for. After resetting, the port is now tagged for the new VLAN and the second switchport in back of the phone is assigned untagged for the native VLAN. What I have here **SHOULD** work, but the only address phones ever get is native VLAN. This is driving me insane. Can someone please review my configs to ensure I'm not making a simple mistake? Also any suggestions would help..I'll rate posts.
Cisco Config
********************
!
version 12.4
!
no aaa new-model
ip cef
!
interface FastEthernet0/0
no ip address
ip nbar protocol-discovery
ip flow ingress
ip flow egress
duplex auto
speed auto
!
interface FastEthernet0/0.1
encapsulation dot1Q 1 native
ip address **.**.216.1 255.255.255.0
!
interface FastEthernet0/0.307
encapsulation dot1Q 307
ip address **.**.20.225 255.255.255.224
ip helper-address **.**.216.254
!
router eigrp 102
network **.**.20.224 0.0.0.31
network **.**.216.1 0.0.0.0
network **.**.96.82 0.0.0.0
no auto-summary
!
router eigrp 1
network **.**.16.8 0.0.0.3
network **.**.216.0 0.0.0.255
no auto-summary
!
HP CONFIG
********************
; J4813A Configuration Editor; Created on release #F.05.60
cdp run
no web-management
no telnet-server
interface 23
no lacp
exit
trunk 23 Trk1 Trunk
ip default-gateway **.**.216.1
vlan 1
name "Data VLAN"
untagged 1-22,24-Trk1
ip address **.**.216.6 255.255.255.0
exit
vlan 307
name "Voice"
ip address **.**.20.227 255.255.255.224
tagged 1-22,24-Trk1
exit
ip ssh
no aaa port-access authenticator active
spanning-tree Trk1 priority 4
11-06-2007 10:33 PM
Your config looks fairly OK. Have you read the following: http://www.bts1981.com/net.req.htm#dhcp
Otherwise, you sould debug the dhcp negotiation process to see where this goes wrong.
regards,
Leo
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